undefined behavior - Page 338

How to move child element from one parent to another using jQuery

- by Kapslok

I am using the jQuery DataTables plugin. I would like to move the search box (.dataTables_filter) and number of records to display dropdown (.dataTables_length) from their parent element (.dataTables_wrapper) to another div on my page without losing any registered javascript behavior. For instance the search box has a function attached to the 'keyup' event and I want to keep that intact. The DOM looks like this: <body> <div id="parent1"> <div class="dataTables_wrapper" id="table1_wrapper"> <div class="dataTables_length" id="table1_length"> <select size="1" name="table1_length"> <option value="10">10</option> <option value="25">25</option> <option value="50">50</option> <option value="100">100</option> </select> </div> <div class="dataTables_filter" id="table1_filter"> <input type="text" class="search"> </div> <table id="table1"> ... </table> </div> </div> <div id="parent2"> <ul> <li><a href="#">Link A</a></li> <li><a href="#">Link B</a></li> <li><a href="#">Link C</a></li> </ul> </div> </body> This is what I would like the DOM to look like after the move: <body> <div id="parent1"> <div class="dataTables_wrapper" id="table1_wrapper"> <table id="table1"> ... </table> </div> </div> <div id="parent2"> <div class="dataTables_filter" id="table1_filter"> <input type="text" class="search"> </div> <div class="dataTables_length" id="table1_length"> <select size="1" name="table1_length"> <option value="10">10</option> <option value="25">25</option> <option value="50">50</option> <option value="100">100</option> </select> </div> <ul> <li><a href="#">Link A</a></li> <li><a href="#">Link B</a></li> <li><a href="#">Link C</a></li> </ul> </div> </body> I've been looking at the .append(), .appendTo(), .prepend() and .prependTo() functions but haven't had any luck with these in practice. I've also looked at the .parent() and .parents() functions, but can't seem to code a workable solution. I have also considered changing the CSS so that the elements are absolutely positioned - but to be frank the page is setup with fluid elements all over, and I really want these elements to be floated in their new parents. Any help with this is much appreciated.

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jQuery Toggle with Cookie

- by Cameron

I have the following toggle system, but I want it to remember what was open/closed using the jQuery cookie plugin. So for example if I open a toggle and then navigate away from the page, when I come back it should be still open. This is code I have so far, but it's becoming rather confusing, some help would be much appreciated thanks. jQuery.cookie = function (name, value, options) { if (typeof value != 'undefined') { options = options || {}; if (value === null) { value = ''; options = $.extend({}, options); options.expires = -1; } var expires = ''; if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) { var date; if (typeof options.expires == 'number') { date = new Date(); date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000)); } else { date = options.expires; } expires = '; expires=' + date.toUTCString(); } var path = options.path ? '; path=' + (options.path) : ''; var domain = options.domain ? '; domain=' + (options.domain) : ''; var secure = options.secure ? '; secure' : ''; document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join(''); } else { var cookieValue = null; if (document.cookie && document.cookie != '') { var cookies = document.cookie.split(';'); for (var i = 0; i < cookies.length; i++) { var cookie = jQuery.trim(cookies[i]); if (cookie.substring(0, name.length + 1) == (name + '=')) { cookieValue = decodeURIComponent(cookie.substring(name.length + 1)); break; } } } return cookieValue; } }; // var showTop = $.cookie('showTop'); if ($.cookie('showTop') == 'collapsed') { $(".toggle_container").hide(); $(".trigger").toggle(function () { $(this).addClass("active"); }, function () { $(this).removeClass("active"); }); $(".trigger").click(function () { $(this).next(".toggle_container").slideToggle("slow,"); }); } else { $(".toggle_container").show(); $(".trigger").toggle(function () { $(this).addClass("active"); }, function () { $(this).removeClass("active"); }); $(".trigger").click(function () { $(this).next(".toggle_container").slideToggle("slow,"); }); }; $(".trigger").click(function () { if ($(".toggle_container").is(":hidden")) { $(this).next(".toggle_container").slideToggle("slow,"); $.cookie('showTop', 'expanded'); } else { $(this).next(".toggle_container").slideToggle("slow,"); $.cookie('showTop', 'collapsed'); } return false; }); and this is a snippet of the HTML it works with: <li> <label for="small"><input type="checkbox" id="small" /> Small</label> <a class="trigger" href="#">Toggle</a> <div class="toggle_container"> <p class="funding"><strong>Funding</strong></p> <ul class="childs"> <li class="child"> <label for="fully-funded1"><input type="checkbox" id="fully-funded1" /> Fully Funded</label> <a class="trigger" href="#">Toggle</a> <div class="toggle_container"> <p class="days"><strong>Days</strong></p> <ul class="days clearfix"> <li><label for="1pre16">Pre 16</label> <input type="text" id="1pre16" /></li> <li><label for="2post16">Post 16</label> <input type="text" id="2post16" /></li> <li><label for="3teacher">Teacher</label> <input type="text" id="3teacher" /></li> </ul> </div> </li>

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Quartz Thread Execution Parallel or Sequential?

- by vikas

We have a quartz based scheduler application which runs about 1000 jobs per minute which are evenly distributed across seconds of each minute i.e. about 16-17 jobs per second. Ideally, these 16-17 jobs should fire at same time, however our first statement, which simply logs the time of execution, of execute method of the job is being called very late. e.g. let us assume we have 1000 jobs scheduled per minute from 05:00 to 05:04. So, ideally the job which is scheduled at 05:03:50 should have logged the first statement of the execute method at 05:03:50, however, it is doing it at about 05:06:38. I have tracked down the time taken by the scheduled job which comes around 15-20 milliseconds. This scheduled job is fast enough because we just send a message on an ActiveMQ queue. We have specified the number of threads of quartz to be 100 and even tried with increasing it to 200 and more, but no gain. One more thing we noticed is that logs from scheduler are coming sequential after first 1 minute i.e. [Quartz_Worker_28] <Some log statement> .. .. [Quartz_Worker_29] <Some log statement> .. .. [Quartz_Worker_30] <Some log statement> .. .. So it suggesting that after some time quartz is running threads almost sequential. May be this is happening due to the time taken in notifying the job completion to persistence store (which is a separate postgres database in this case) and/or context switching. What can be the reason behind this strange behavior? EDIT: More detailed Log [06/07/12 10:08:37:192][QuartzScheduler_Worker-34][INFO] org.quartz.plugins.history.LoggingTriggerHistoryPlugin - Trigger [<trigger_name>] fired job [<job_name>] scheduled at: 06-07-2012 10:08:33.458, next scheduled at: 06-07-2012 10:34:53.000 [06/07/12 10:08:37:192][QuartzScheduler_Worker-34][INFO] <my_package>.scheduler.quartz.ScheduledLocateJob - execute begin--------- ScheduledLocateJob with key: <job_name> started at Fri Jul 06 10:08:37 EDT 2012 [06/07/12 10:08:37:192][QuartzScheduler_Worker-34][INFO] <my_package>.scheduler.quartz.ScheduledLocateJob <some log statement> [06/07/12 10:08:37:192][QuartzScheduler_Worker-34][INFO] <my_package>.scheduler.quartz.ScheduledLocateJob <some log statement> [06/07/12 10:08:37:192][QuartzScheduler_Worker-34][INFO] <my_package>.scheduler.quartz.ScheduledLocateJob <some log statement> [06/07/12 10:08:37:220][QuartzScheduler_Worker-34][INFO] <my_package>.scheduler.quartz.ScheduledLocateJob - execute end--------- ScheduledLocateJob with key: <job_name> ended at Fri Jul 06 10:08:37 EDT 2012 [06/07/12 10:08:37:220][QuartzScheduler_Worker-34][INFO] org.quartz.plugins.history.LoggingTriggerHistoryPlugin - Trigger [<trigger_name>] completed firing job [<job_name>] with resulting trigger instruction code: DO NOTHING. Next scheduled at: 06-07-2012 10:34:53.000 I am doubting on this section of the above log scheduled at: 06-07-2012 10:08:33.458, next scheduled at: 06-07-2012 10:34:53.000 because this job was scheduled for 10:04:53, but it fired at 10:08:33 and still quartz didn't consider it as misfire. Shouldn't it be a misfire?

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Python/numpy tricky slicing problem

- by daver

Hi stack overflow, I have a problem with some numpy stuff. I need a numpy array to behave in an unusual manner by returning a slice as a view of the data I have sliced, not a copy. So heres an example of what I want to do: Say we have a simple array like this: a = array([1, 0, 0, 0]) I would like to update consecutive entries in the array (moving left to right) with the previous entry from the array, using syntax like this: a[1:] = a[0:3] This would get the following result: a = array([1, 1, 1, 1]) Or something like this: a[1:] = 2*a[:3] # a = [1,2,4,8] To illustrate further I want the following kind of behaviour: for i in range(len(a)): if i == 0 or i+1 == len(a): continue a[i+1] = a[i] Except I want the speed of numpy. The default behavior of numpy is to take a copy of the slice, so what I actually get is this: a = array([1, 1, 0, 0]) I already have this array as a subclass of the ndarray, so I can make further changes to it if need be, I just need the slice on the right hand side to be continually updated as it updates the slice on the left hand side. Am I dreaming or is this magic possible? Update: This is all because I am trying to use Gauss-Seidel iteration to solve a linear algebra problem, more or less. It is a special case involving harmonic functions, I was trying to avoid going into this because its really not necessary and likely to confuse things further, but here goes. The algorithm is this: while not converged: for i in range(len(u[:,0])): for j in range(len(u[0,:])): # skip over boundary entries, i,j == 0 or len(u) u[i,j] = 0.25*(u[i-1,j] + u[i+1,j] + u[i, j-1] + u[i,j+1]) Right? But you can do this two ways, Jacobi involves updating each element with its neighbours without considering updates you have already made until the while loop cycles, to do it in loops you would copy the array then update one array from the copied array. However Gauss-Seidel uses information you have already updated for each of the i-1 and j-1 entries, thus no need for a copy, the loop should essentially 'know' since the array has been re-evaluated after each single element update. That is to say, every time we call up an entry like u[i-1,j] or u[i,j-1] the information calculated in the previous loop will be there. I want to replace this slow and ugly nested loop situation with one nice clean line of code using numpy slicing: u[1:-1,1:-1] = 0.25(u[:-2,1:-1] + u[2:,1:-1] + u[1:-1,:-2] + u[1:-1,2:]) But the result is Jacobi iteration because when you take a slice: u[:,-2,1:-1] you copy the data, thus the slice is not aware of any updates made. Now numpy still loops right? Its not parallel its just a faster way to loop that looks like a parallel operation in python. I want to exploit this behaviour by sort of hacking numpy to return a pointer instead of a copy when I take a slice. Right? Then every time numpy loops, that slice will 'update' or really just replicate whatever happened in the update. To do this I need slices on both sides of the array to be pointers. Anyway if there is some really really clever person out there that awesome, but I've pretty much resigned myself to believing the only answer is to loop in C.

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how to link with static mySQL C library with Visual Studio 2008?

- by Jean-Denis Muys

Hi, My project is running fine, but its requirement for some DLLs means it cannot be simply dragged and dropped by the end user. The DLLs are not loaded when put side by side with my executable, because my executable is not an application, and its location is not in the few locations where Windows looks for DLL. I already asked a question about how to make their loading happen. None of the suggestions worked (see the question at http://stackoverflow.com/questions/2637499/how-can-a-win32-app-plugin-load-its-dll-in-its-own-directory) So I am now exploring another way: get rid of the DLLs altogether, and link with static versions of them. This is failing for the last of those DLLs. So I am at this point where all but one of the libraries are statically linked, and everything is fine. The last library is the standard C library for mySQL, aka Connector/C. The problem I have may or may not be related with that origin. Whenever I switched to the static library in the linker additional dependency, I get the following errors (log at the end): 1- about 40 duplicate symbols (e.g. _toupper) mutually between LIBCMT.lib and MSVCRT.lib. Interestingly, I can't control the inclusion of these two libraries: they are from Visual Studio and automatically included. So why are these symbol duplicate when I include mySQL's static lib, but not its DLL? Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\MSVCRT.lib: Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\OLDNAMES.lib: Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\msvcprt.lib: Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\LIBCMT.lib: LIBCMT.lib(setlocal.obj) : error LNK2005: _setlocale already defined in MSVCRT.lib(MSVCR90.dll) Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\MSVCRT.lib: MSVCRT.lib(MSVCR90.dll) : error LNK2005: _toupper already defined in LIBCMT.lib(toupper.obj) 2- two warnings that MSVCRT and LIBCMT conflicts with use of other libs, with a suggestion to use /NODEFAULTLIB:library:. I don't understand that suggestion: what am I supposed to do and how? LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library LINK : warning LNK4098: defaultlib 'LIBCMT' conflicts with use of other libs; use /NODEFAULTLIB:library 3- an external symbol is undefined: _main. So does that mean that the static mySQL lib (but not the DLL) references a _main symbol? For the sake of it, I tried to define an empty function named _main() in my code, with no difference. LIBCMT.lib(crt0.obj) : error LNK2001: unresolved external symbol _main As mentioned in my first question, my code is a port of a fully working Mac version of the code. Its a plugin for a host application that I don't control. The port currently works, albeit with installation issues due to that lone remaining DLL. As a Mac programmer I am rather disoriented with Visual Studio and Windows which I find confusing, poorly designed and documented, with error messages that are very difficult to grasp and act upon. So I will be very grateful for any help. Here is the full set of errors: 1 Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\MSVCRT.lib: 1 Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\OLDNAMES.lib: 1 Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\msvcprt.lib: 1 Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\LIBCMT.lib: 1LIBCMT.lib(setlocal.obj) : error LNK2005: _setlocale already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(tidtable.obj) : error LNK2005: __encode_pointer already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(tidtable.obj) : error LNK2005: __encoded_null already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(tidtable.obj) : error LNK2005: __decode_pointer already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(tolower.obj) : error LNK2005: _tolower already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(invarg.obj) : error LNK2005: __set_invalid_parameter_handler already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(invarg.obj) : error LNK2005: __invalid_parameter_noinfo already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(crt0dat.obj) : error LNK2005: __amsg_exit already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(crt0dat.obj) : error LNK2005: __initterm_e already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(crt0dat.obj) : error LNK2005: _exit already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(crtheap.obj) : error LNK2005: __malloc_crt already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(dosmap.obj) : error LNK2005: __errno already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(file.obj) : error LNK2005: __iob_func already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(mlock.obj) : error LNK2005: __unlock already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(mlock.obj) : error LNK2005: _lock already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(winxfltr.obj) : error LNK2005: __CppXcptFilter already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(crt0init.obj) : error LNK2005: ___xi_a already defined in MSVCRT.lib(cinitexe.obj) 1LIBCMT.lib(crt0init.obj) : error LNK2005: ___xi_z already defined in MSVCRT.lib(cinitexe.obj) 1LIBCMT.lib(crt0init.obj) : error LNK2005: ___xc_a already defined in MSVCRT.lib(cinitexe.obj) 1LIBCMT.lib(crt0init.obj) : error LNK2005: ___xc_z already defined in MSVCRT.lib(cinitexe.obj) 1LIBCMT.lib(hooks.obj) : error LNK2005: "void __cdecl terminate(void)" (?terminate@@YAXXZ) already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(winsig.obj) : error LNK2005: _signal already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(fflush.obj) : error LNK2005: _fflush already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(tzset.obj) : error LNK2005: __tzset already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(_ctype.obj) : error LNK2005: _isspace already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(_ctype.obj) : error LNK2005: _iscntrl already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(getenv.obj) : error LNK2005: _getenv already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(strnicmp.obj) : error LNK2005: __strnicmp already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(osfinfo.obj) : error LNK2005: __get_osfhandle already defined in MSVCRT.lib(MSVCR90.dll) 1LIBCMT.lib(osfinfo.obj) : error LNK2005: __open_osfhandle already defined in MSVCRT.lib(MSVCR90.dll) [...] 1 Searching C:\Program Files\Microsoft Visual Studio 9.0\VC\lib\MSVCRT.lib: 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _toupper already defined in LIBCMT.lib(toupper.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _isalpha already defined in LIBCMT.lib(_ctype.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _wcschr already defined in LIBCMT.lib(wcschr.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _isdigit already defined in LIBCMT.lib(_ctype.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _islower already defined in LIBCMT.lib(ctype.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: __doserrno already defined in LIBCMT.lib(dosmap.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _strftime already defined in LIBCMT.lib(strftime.obj) 1MSVCRT.lib(MSVCR90.dll) : error LNK2005: _isupper already defined in LIBCMT.lib(_ctype.obj) [...] 1Finished searching libraries 1 Creating library z:\PCdev\Test\RK_Demo_2004\plugins\Test.bundle\contents\windows\Test.lib and object z:\PCdev\Test\RK_Demo_2004\plugins\Test.bundle\contents\windows\Test.exp 1Searching libraries [...] 1Finished searching libraries 1LINK : warning LNK4098: defaultlib 'MSVCRT' conflicts with use of other libs; use /NODEFAULTLIB:library 1LINK : warning LNK4098: defaultlib 'LIBCMT' conflicts with use of other libs; use /NODEFAULTLIB:library 1LIBCMT.lib(crt0.obj) : error LNK2001: unresolved external symbol _main

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"Local transaction already has 1 non-XA Resource: cannot add more resources" error

- by jthg

After reading previous questions about this error, it seems like all of them conclude that you need to enable XA on all of the data sources. But: What if I don't want a distributed transaction? What would I do if I want to start transactions on two different databases at the same time, but commit the transaction on one database and roll back the transaction on the other? I'm wondering how my code actually initiated a distributed transaction. It looks to me like I'm starting completely separate transactions on each of the databases. Info about the application: The application is an EJB running on a Sun Java Application Server 9.1 I use something like the following spring context to set up the hibernate session factories: <bean id="dbADatasource" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="jdbc/dbA"/> </bean> <bean id="dbASessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource" ref="dbADatasource" /> <property name="hibernateProperties"> [hibernate properties...] </property> <property name="mappingResources"> [mapping resources...] </property> </bean> <bean id="dbBDatasource" class="org.springframework.jndi.JndiObjectFactoryBean"> <property name="jndiName" value="jdbc/dbB"/> </bean> <bean id="dbBSessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource" ref="dbBDatasource" /> <property name="hibernateProperties"> [hibernate properties...] </property> <property name="mappingResources"> [mapping resources...] </property> </bean> Both of the JNDI resources are javax.sql.ConnectionPoolDatasoure's. They actually both point to the same connection pool, but we have two different JNDI resources because there's the possibility that the two groups of tables will move to different databases in the future. Then in code, I do: sessionA = dbASessionFactory.openSession(); sessionB = dbBSessionFactory.openSession(); sessionA.beginTransaction(); sessionB.beginTransaction(); The sessionB.beginTransaction() line produces the error in the title of this post - sometimes. I ran the app on two different sun application servers. On one runs it fine, the other throws the error. I don't see any difference in how the two servers are configured although they do connect to different, but equivalent databases. So the question is Why doesn't the above code start completely independent transactions? How can I force it to start independent transactions rather than a distributed transaction? What configuration could cause the difference in behavior between the two application servers? Thanks.

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jQuery Validation hiding or tearing down jquery Modal Dialog on submit

- by Programmin Tool

Basically when clicking the modal created submit button, and calling jQuery('#FormName').submit(), it will run the validation and then call the method assigned in the submitHandler. After that it is either creating a new modal div or hiding the form, and I don't get why. I have debugged it and noticed that after the method call in the submitHandler, the form .is(':hidden') = true and this is true for the modal div also. I'm positive I've done this before but can't seem to figure out what I've done wrong this time. The odd this is a modal div is showing up on the screen, but it's completely devoid of content. (Even after putting in random text outside of the form. It's like it's a whole new modal div) Here are the set up methods: function setUpdateTaskDiv() { jQuery("#UpdateTaskForm").validate({ errorLabelContainer: "#ErrorDiv", wrapper: "div", rules: { TaskSubject: { required: true } }, messages: { TaskSubject: { required: 'Subject is required.' } }, onfocusout: false, onkeyup: false, submitHandler: function(label) { updateTaskSubject(null); } } ); jQuery('#UpdateDiv').dialog({ autoOpen: false, bgiframe: true, height: 400, width: 500, modal: true, beforeclose: function() { }, buttons: { Submit: function() { jQuery('#UpdateTaskForm').submit(); }, Cancel: function() { ... } } }); where: function updateTaskSubject(task) { //does nothing, it's just a shell right now } Doesn't really do anything right now. Here's the html: <div id="UpdateDiv"> <div id="ErrorDiv"> </div> <form method="post" id="UpdateTaskForm" action="Calendar.html"> <div> <div class="floatLeft"> Date: </div> <div class="floatLeft"> </div> <div class="clear"> </div> </div> <div> <div class="floatLeft"> Start Time: </div> <div class="floatLeft"> <select id="TaskStartDate" name="TaskStartDate"> </select> </div> <div class="clear"> </div> </div> <div> <div class="floatLeft"> End Time: </div> <div class="floatLeft"> <select id="TaskEndDate" name="TaskEndDate"> </select> </div> <div class="clear"> </div> </div> <div> <div class="floatLeft"> Subject: </div> <div class="floatLeft"> <textarea id="TaskSubject" name="TaskSubject" cols="30" rows="10"></textarea> </div> <div class="clear"> </div> </div> <div> <input type="hidden" id="TaskId" value="" /> </div> <div class="clear"></div> </form> </div> Odd Discovery Turns out that the examples that I got this to work all had the focus being put back on the modal itself. For example, using the validator to add messages to the error div. (Success or not) Without doing this, the modal dialog apparently thinks that it's done with what it needs to do and just hides everything. Not sure exactly why, but to stop this behavior some kind of focus has to be assigned to something within the div itself.

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Web service occasionally slows down significantly

- by Swoop

My company is running into a problem with a web service that is written in C#/ASP.Net. The service receives an identity key for data in SQL Server and a path to generate and save a PDF report for this data. In most cases, this web service returns results to the calling web pages very quickly, usually within a few seconds max. However, it seems to occasionally hit a significant slowdown. The web application calling the web service will generate a timeout error when this slowdown occurs. We have checked and the PDF does get created and saved to the server, so it looks like the web service eventually finishes executing. It seems to take about 1 to 2 minutes for processing to have completed. The PDF is generated using ActiveReports from Data Dynamics. Wwhen this problem occurs, making a small change to the web service's config file (ie, adding a blank space to a connection string line) seems to restart the web service and everything is perfectly ok for a period of time afterwards. Other web applications that are running on the same web server do not seem to experience this type of behavior, only this particular web service. I have added the code for the web service below. It is basic calls to 3rd party libraries. We are not able to recreate this problem in test. I am wondering what might be causing this issue? [WebMethod] public string Publish(int identity, string transactionType, string directory, string filename) { try { AdpConnection Conn = new AdpConnection(ConfigurationManager.AppSettings["myDBConnString"]); AdpCommand Cmd = new AdpCommand("storedproc_GetData", oConn); AdpParameter Param; Cmd.CommandType = CommandType.StoredProcedure; Param = Cmd.CreateParameter("@Identity", DbType.Int32); Param.Value = identity; Cmd.Parameters.Add(oParam); Conn.Open(); string aResponse = Cmd.ExecuteScalar().ToString(); Conn.Close(); if (transactionType == "typeA") { //Parse response DataSet dsResponse = ParseDataResponse(aResponse); //dsResponse.WriteXml(@ConfigurationManager.AppSettings["DocsDir"] + identity.ToString() + ".xml"); DataDynamics.ActiveReports.ActiveReport3 rpt = new DataDynamics.ActiveReports.ActiveReport3(); rpt.LoadLayout(@ConfigurationManager.AppSettings["myReportPath"] + "TypeA.rpx"); rpt.AddNamedItem("ReportPath", @ConfigurationManager.AppSettings["myReportPath"]); rpt.AddNamedItem("XMLSTRING", FormatXML(dsResponse.GetXml())); DataDynamics.ActiveReports.DataSources.XMLDataSource xmlds = new DataDynamics.ActiveReports.DataSources.XMLDataSource(); xmlds.FileURL = null; xmlds.RecordsetPattern = "//DataPatternA"; xmlds.LoadXML(FormatXML(dsResponse.GetXml())); if (!System.IO.Directory.Exists(@ConfigurationManager.AppSettings["DocsDir"] + directory + @"\")) { System.IO.Directory.CreateDirectory(@ConfigurationManager.AppSettings["DocsDir"] + directory + @"\"); } string sXML = FormatXML(dsResponse.GetXml()); StreamWriter sw = new StreamWriter(@ConfigurationManager.AppSettings["DocsDir"] + directory + @"\" + filename + ".xml", false); sw.Write(sXML); sw.Close(); rpt.DataSource = xmlds; rpt.Run(true); DataDynamics.ActiveReports.Export.Pdf.PdfExport xPdf = new DataDynamics.ActiveReports.Export.Pdf.PdfExport(); xPdf.Export(rpt.Document, @ConfigurationManager.AppSettings["DocsDir"] + directory + @"\" + filename + ".pdf"); } } catch(Exception ex) { return "Error: " + ex.ToString(); } return @ConfigurationManager.AppSettings["DocsDir"] + directory + @"\" + filename + ".pdf"; }

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powermock : ProcessBuilder redirectErrorStream giving nullPointerException

- by kaustubh9

I am using powermock to mock some native command invocation using process builder. the strange thing is these test pass sometimes and fail sometimes giving a NPE. Is this a powermock issue or some gotcha in the program. the snippet of the class under test is.. public void method1(String jsonString, String filename) { try { JSONObject jObj = new JSONObject(jsonString); JSONArray jArr = jObj.getJSONArray("something"); String cmd = "/home/y/bin/perl <perlscript>.pl<someConstant>" + " -k " + <someConstant> + " -t " + <someConstant>; cmd += vmArr.getJSONObject(i).getString("jsonKey"); ProcessBuilder pb = new ProcessBuilder("bash", "-c", cmd); pb.redirectErrorStream(false); Process shell = pb.start(); shell.waitFor(); if (shell.exitValue() != 0) { throw new RuntimeException("Error in Collecting the logs. cmd="+cmd); } StringBuilder error = new StringBuilder(); InputStream iError = shell.getErrorStream(); BufferedReader bfr = new BufferedReader( new InputStreamReader(iError)); String line = null; while ((line = bfr.readLine()) != null) { error.append(line + "\n"); } if (!error.toString().isEmpty()) { LOGGER.error(error`enter code here`); } iError.close(); bfr.close(); } catch (Exception e) { throw new RuntimeException(e); } and the unit test case is .. @PrepareForTest( {.class, ProcessBuilder.class,Process.class, InputStream.class,InputStreamReader.class, BufferedReader.class} ) @Test(sequential=true) public class TestClass { @Test(groups = {"unit"}) public void testMethod() { try { ProcessBuilder prBuilderMock = createMock(ProcessBuilder.class); Process processMock = createMock(Process.class); InputStream iStreamMock = createMock(InputStream.class); InputStreamReader iStrRdrMock = createMock(InputStreamReader.class); BufferedReader bRdrMock = createMock(BufferedReader.class); String errorStr =" Error occured"; String json = <jsonStringInput>; String cmd = "/home/y/bin/perl <perlscript>.pl -k "+<someConstant>+" -t "+<someConstant>+" "+<jsonValue>; expectNew(ProcessBuilder.class, "bash", "-c", cmd).andReturn(prBuilderMock); expect(prBuilderMock.redirectErrorStream(false)).andReturn(prBuilderMock); expect(prBuilderMock.start()).andReturn(processMock); expect(processMock.waitFor()).andReturn(0); expect(processMock.exitValue()).andReturn(0); expect(processMock.getErrorStream()).andReturn(iStreamMock); expectNew(InputStreamReader.class, iStreamMock) .andReturn(iStrRdrMock); expectNew(BufferedReader.class, iStrRdrMock) .andReturn(bRdrMock); expect(bRdrMock.readLine()).andReturn(errorStr); expect(bRdrMock.readLine()).andReturn(null); iStreamMock.close(); bRdrMock.close(); expectLastCall().once(); replayAll(); <ClassToBeTested> instance = new <ClassToBeTested>(); instance.method1(json, fileName); verifyAll(); } catch (Exception e) { Assert.fail("failed while collecting log.", e); } } I get an error on execution an the test case fails.. Caused by: java.lang.NullPointerException at java.lang.ProcessBuilder.start(ProcessBuilder.java:438) Note : I do not get this error on all executions. Sometimes it passes and sometimes it fails. I am not able to understand this behavior.

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Using RJS to replace innerHTML with a real live instance variable.

- by Steve Cotner

I can't for the life of me get RJS to replace an element's innerHTML with an instance variable's attribute, i.e. something like @thing.name I'll show all the code (simplified from the actual project, but still complete), and I hope the solution will be forehead-slap obvious to someone... In RoR, I've made a simple page displaying a random Chinese character. This is a Word object with attributes chinese and english. Clicking on a link titled "What is this?" reveals the english attribute using RJS. Currently, it also hides the "What is this?" link and reveals a "Try Another?" link that just reloads the page, effectively starting over with a new random character. This is fine, but there are other elements on the page that make their own database queries, so I would like to load a new random character by an AJAX call, leaving the rest of the page alone. This has turned out to be harder than I expected: I have no trouble replacing the html using link_remote_to and page.replace_html, but I can't get it to display anything that includes an instance variable. I have a Word resource and a Page resource, which has a home page, where all this fun takes place. In the PagesController, I've made a couple ways to get random words. Either one works fine... Here's the code: class PagesController < ApplicationController def home all_words = Word.find(:all) @random_word = all_words.rand @random_words = Word.find(:all, :limit => 100, :order => 'rand()') @random_first = @random_words[1] end end As an aside, the SQL call with :limit => 100 is just in case I think of some way to cycle through those random words. Right now it's not useful. Also, the 'rand()' is MySQL specific, as far as I know. In the home page view (it's HAML), I have this: #character_box = render(:partial => "character", :object => @random_word) if @random_word #whatisthis = link_to_remote "? what is this?", :url => { :controller => 'words', :action => 'reveal_character' }, :html => { :title => "Click for the translation." } #tryanother.{:style => "display:none"} = link_to "try another?", root_path Note that the #'s in this case represent divs (with the given ids), not comments, because this is HAML. The "character" partial looks like this (it's erb, for no real reason): <div id="character"> <%= "#{@random_word.chinese}" } %> </div> <div id="revealed" style="display:none"> <ul> <li><span id="english"><%= "#{@random_word.english_name}" %></span></li> </ul> </div> The reveal_character.rjs file looks like this: page[:revealed].visual_effect :slide_down, :duration => '.2' page[:english].visual_effect :highlight, :startcolor => "#ffff00", :endcolor => "#ffffff", :duration => '2.5' page.delay(0.8) do page[:whatisthis].visual_effect :fade, :duration => '.3' page[:tryanother].visual_effect :appear end That all works perfectly fine. But if I try to turn link_to "try another?" into link_to_remote, and point it to an RJS template that replaces the "character" element with something new, it only works when I replace the innerHTML with static text. If I try to pass an instance variable in there, it never works. For instance, let's say I've defined a second random word under Pages#home... I'll add @random_second = @random_words[2] there. Then, in the home page view, I'll replace the "try another?" link (previously pointing to the root_path), with this: = link_to_remote "try another?", :url => { :controller => 'words', :action => 'second_character' }, :html => { :title => "Click for a new character." } I'll make that new RJS template, at app/views/words/second_character.rjs, and a simple test like this shows that it's working: page.replace_html("character", "hi") But if I change it to this: page.replace_html("character", "#{@random_second.english}") I get an error saying I fed it a nil object: ActionView::TemplateError (undefined method `english_name' for nil:NilClass) on line #1 of app/views/words/second_character.rjs: 1: page.replace_html("character", "#{@random_second.english}") Of course, actually instantiating @random_second, @random_third and so on ad infinitum would be ridiculous in a real app (I would eventually figure out some better way to keep grabbing a new random record without reloading the page), but the point is that I don't know how to get any instance variable to work here. This is not even approaching my ideal solution of rendering a partial that includes the object I specify, like this: page.replace_html 'character', :partial => 'new_character', :object => @random_second As I can't get an instance variable to work directly, I obviously cannot get it to work via a partial. I have tried various things like: :object => @random_second or :locals => { :random_second => @random_second } I've tried adding these all over the place -- in the link_to_remote options most obviously -- and studying what gets passed in the parameters, but to no avail. It's at this point that I realize I don't know what I'm doing. This is my first question here. I erred on the side of providing all necessary code, rather than being brief. Any help would be greatly appreciated.

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Blend Interaction Behaviour gives "points to immutable instance" error

- by kennethkryger

I have a UserControl that is a base class for other user controls, that are shown in "modal view". I want to have all user controls fading in, when shown and fading out when closed. I also want a behavior, so that the user can move the controls around.My contructor looks like this: var tg = new TransformGroup(); tg.Children.Add(new ScaleTransform()); RenderTransform = tg; var behaviors = Interaction.GetBehaviors(this); behaviors.Add(new TranslateZoomRotateBehavior()); Loaded += ModalDialogBase_Loaded; And the ModalDialogBase_Loaded method looks like this: private void ModalDialogBase_Loaded(object sender, RoutedEventArgs e) { var fadeInStoryboard = (Storyboard)TryFindResource("modalDialogFadeIn"); fadeInStoryboard.Begin(this); } When I press a Close-button on the control this method is called: protected virtual void Close() { var fadeOutStoryboard = (Storyboard)TryFindResource("modalDialogFadeOut"); fadeOutStoryboard = fadeOutStoryboard.Clone(); fadeOutStoryboard.Completed += delegate { RaiseEvent(new RoutedEventArgs(ClosedEvent)); }; fadeOutStoryboard.Begin(this); } The storyboard for fading out look like this: <Storyboard x:Key="modalDialogFadeOut"> <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)" Storyboard.TargetName="{x:Null}"> <EasingDoubleKeyFrame KeyTime="0" Value="1"> <EasingDoubleKeyFrame.EasingFunction> <BackEase EasingMode="EaseIn" Amplitude="0.3" /> </EasingDoubleKeyFrame.EasingFunction> </EasingDoubleKeyFrame> <EasingDoubleKeyFrame KeyTime="0:0:0.4" Value="0"> <EasingDoubleKeyFrame.EasingFunction> <BackEase EasingMode="EaseIn" Amplitude="0.3" /> </EasingDoubleKeyFrame.EasingFunction> </EasingDoubleKeyFrame> </DoubleAnimationUsingKeyFrames> <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)" Storyboard.TargetName="{x:Null}"> <EasingDoubleKeyFrame KeyTime="0" Value="1"> <EasingDoubleKeyFrame.EasingFunction> <BackEase EasingMode="EaseIn" Amplitude="0.3" /> </EasingDoubleKeyFrame.EasingFunction> </EasingDoubleKeyFrame> <EasingDoubleKeyFrame KeyTime="0:0:0.4" Value="0"> <EasingDoubleKeyFrame.EasingFunction> <BackEase EasingMode="EaseIn" Amplitude="0.3" /> </EasingDoubleKeyFrame.EasingFunction> </EasingDoubleKeyFrame> </DoubleAnimationUsingKeyFrames> <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="{x:Null}"> <EasingDoubleKeyFrame KeyTime="0" Value="1" /> <EasingDoubleKeyFrame KeyTime="0:0:0.3" Value="0" /> <EasingDoubleKeyFrame KeyTime="0:0:0.4" Value="0" /> </DoubleAnimationUsingKeyFrames> </Storyboard> If the user control is show, and the user does NOT move it around on the screen, everything works fine. However, if the user DOES move the control around, I get the following error when the modalDialogFadeOut storyboard is started: 'Children' property value in the path '(0).(1)[0].(2)' points to immutable instance of 'System.Windows.Media.TransformCollection'. How can fix this?

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NHibernate Mapping and Querying Where Tables are Related But No Foreign Key Constraint

- by IanT8

I'm fairly new to NHibernate, and I need to ask a couple of questions relating to a very frequent scenario. The following simplified example illustrates the problem. I have two tables named Equipment and Users. Users is a set of system administrators. Equipment is a set of machinery. Tables: Users table has UserId int and LoginName nvarchar(64). Equipment table has EquipId int, EquipType nvarchar(64), UpdatedBy int. Behavior: System administrators can make changes to Equipment, and when they do, the UpdatedBy field of Equipment is "normally" set to their User Id. Users can be deleted at any time. New Equipment items have an UpdatedBy value of null. There's no foreign key constraint on Equipment.UpdatedBy which means: Equipment.UpdatedBy can be null. Equipment.UpdatedBy value can be = existing User.UserId value Equipment.UpdatedBy value can be = non-existent User.UserId value To find Equipment and who last updated the Equipment, I might query like this: select E.EquipId, E.EquipName, U.UserId, U.LoginName from Equipment E left outer join Users U on. E.UpdatedBy = U.UserId Simple enough. So how to do that in NHibernate? My mappings might be as follows: <?xml version="1.0" encoding="utf-8"?> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="Data" assembly="Data"> <class name="User" table="Users"> <id name="Id" column="UserId" unsaved-value="0"> <generator class="native" /> </id> <property name="LoginName" unique="true" not-null="true" /> </class> <class name="Equipment" table="Equipment"> <id name="Id" column="EquipId" type="int" unsaved-value="0"> <generator class="native" /> </id> <property name="EquipType" /> <many-to-one name="UpdatedBy" class="User" column="UpdatedBy" /> </class> </hibernate-mapping> So how do I get all items of equipment and who updated them? using (ISession session = sessionManager.OpenSession()) { List<Data.Equipment> equipList = session .CreateCriteria<Data.Equipment>() // Do I need to SetFetchmode or specify that I // want to join onto User here? If so how? .List<Data.Equipment>(); foreach (Data.Equipment item in equipList) { Debug.WriteLine("\nEquip Id: " + item.Id); Debug.WriteLine("Equip Type: " + item.EquipType); if (item.UpdatedBy.Country != null) Debug.WriteLine("Updated By: " + item.UpdatedBy.LoginName); else Debug.WriteLine("Updated by: Nobody"); } } When Equipment.UpdatedBy = 3 and there is no Users.UserId = 3, the above fail I also have a feeling that the generated SQL is a select all from Equipment followed by many select columns from Users where UserId = n whereas I'd expected NHibernate to left join as per my plain ordinary SQL and do one hit. If I can tell NHibernate to do the query in one hit, how do I do that? Time is of the essence on my project, so any help you could provide is gratefully received. If you're speculating about how NHibernate might work in this scenario, please say you're not absolutely sure. Many thanks.

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NSFetchedResultsController: using of NSManagedObjectContext during update brings to crash

- by Kentzo

Here is the interface of my controller class: @interface ProjectListViewController : UITableViewController <NSFetchedResultsControllerDelegate> { NSFetchedResultsController *fetchedResultsController; NSManagedObjectContext *managedObjectContext; } @end I use following code to init fetchedResultsController: if (fetchedResultsController != nil) { return fetchedResultsController; } // Create and configure a fetch request with the Project entity. NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; NSEntityDescription *entity = [NSEntityDescription entityForName:@"Project" inManagedObjectContext:managedObjectContext]; [fetchRequest setEntity:entity]; // Create the sort descriptors array. NSSortDescriptor *projectIdDescriptor = [[NSSortDescriptor alloc] initWithKey:@"projectId" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:projectIdDescriptor, nil]; [fetchRequest setSortDescriptors:sortDescriptors]; // Create and initialize the fetch results controller. NSFetchedResultsController *aFetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:managedObjectContext sectionNameKeyPath:nil cacheName:nil]; self.fetchedResultsController = aFetchedResultsController; fetchedResultsController.delegate = self; As you can see, I am using the same managedObjectContext as defined in my controller class Here is an adoption of the NSFetchedResultsControllerDelegate protocol: - (void)controllerWillChangeContent:(NSFetchedResultsController *)controller { // The fetch controller is about to start sending change notifications, so prepare the table view for updates. [self.tableView beginUpdates]; } - (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type newIndexPath:(NSIndexPath *)newIndexPath { UITableView *tableView = self.tableView; switch(type) { case NSFetchedResultsChangeInsert: [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationFade]; break; case NSFetchedResultsChangeDelete: [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; break; case NSFetchedResultsChangeUpdate: [self _configureCell:(TDBadgedCell *)[tableView cellForRowAtIndexPath:indexPath] atIndexPath:indexPath]; break; case NSFetchedResultsChangeMove: if (newIndexPath != nil) { [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade]; [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath] withRowAnimation:UITableViewRowAnimationFade]; } else { [tableView reloadSections:[NSIndexSet indexSetWithIndex:indexPath.section] withRowAnimation:UITableViewRowAnimationFade]; } break; } } - (void)controller:(NSFetchedResultsController *)controller didChangeSection:(id <NSFetchedResultsSectionInfo>)sectionInfo atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type { switch(type) { case NSFetchedResultsChangeInsert: [self.tableView insertSections:[NSIndexSet indexSetWithIndex:sectionIndex] withRowAnimation:UITableViewRowAnimationFade]; break; case NSFetchedResultsChangeDelete: [self.tableView deleteSections:[NSIndexSet indexSetWithIndex:sectionIndex] withRowAnimation:UITableViewRowAnimationFade]; break; } } - (void)controllerDidChangeContent:(NSFetchedResultsController *)controller { [self.tableView endUpdates]; } Inside of the _configureCell:atIndexPath: method I have following code: NSFetchRequest *issuesNumberRequest = [NSFetchRequest new]; NSEntityDescription *issueEntity = [NSEntityDescription entityForName:@"Issue" inManagedObjectContext:managedObjectContext]; [issuesNumberRequest setEntity:issueEntity]; NSPredicate *predicate = [NSPredicate predicateWithFormat:@"projectId == %@", project.projectId]; [issuesNumberRequest setPredicate:predicate]; NSUInteger issuesNumber = [managedObjectContext countForFetchRequest:issuesNumberRequest error:nil]; [issuesNumberRequest release]; I am using the managedObjectContext again. But when I am trying to insert new Project, app crashes with following exception: Assertion failure in -[UITableView _endCellAnimationsWithContext:], /SourceCache/UIKit_Sim/UIKit-984.38/UITableView.m:774 Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (4) must be equal to the number of rows contained in that section before the update (4), plus or minus the number of rows inserted or deleted from that section (1 inserted, 0 deleted).' Fortunately, I've found a workaround: if I create and use separate NSManagedObjectContext inside of the _configureCell:atIndexPath: method app won't crash! I only want to know, is this behavior correct or not?

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Application Event Log keeps getting corrupted

- by yakatz

I recently asked about repairing a corrupt event log, because it seemed to be a one-off event. The event log has since exhibited the same behavior 3 times. We have been trying to find patterns, but so far we have found nothing. The server runs several ASP.NET applications and three scheduled tasks written in .NET. The last modified date of the event log once happened to be the same time as one of the scheduled tasks, but the others have not been. Any suggestions of where to look next or a way we can get any information out of a corrupt evtx file? The server is running critical e-commerce applications, so we want to keep the number of restarts required to a minimum. Edit: I ran DUMPEL and got very strange results. 1/9/2012 4:14:05 PM 1 100 1000 Application Error N/A SERVERNAME Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7a5f8 Faulting module name: ntdll.dll, version: 6.1.7601.17514, time stamp: 0x4ce7ba58 Exception code: 0xc0000374 Fault offset: 0x000ce653 Faulting process id: 0x1070 Faulting application start time: 0x01cccf1386d30991 Faulting application path: C:\Windows\SysWOW64\inetsrv\w3wp.exe Faulting module path: C:\Windows\SysWOW64\ntdll.dll Report Id: dbf4f691-3b06-11e1-9025-005056a602e6 1/9/2012 4:14:07 PM 4 0 1001 Windows Error Reporting N/A SERVERNAME Fault bucket , type 0 Event Name: APPCRASH Response: Not available Cab Id: 0 Problem signature: P1: w3wp.exe P2: 7.5.7601.17514 P3: 4ce7a5f8 P4: StackHash_79d9 P5: 6.1.7601.17514 P6: 4ce7ba58 P7: c0000374 P8: 000ce653 P9: P10: Attached files: C:\Windows\Temp\WER975.tmp.appcompat.txt C:\Windows\Temp\WERA03.tmp.WERInternalMetadata.xml C:\Windows\Temp\WERA13.tmp.hdmp C:\Windows\Temp\WERD21.tmp.mdmp These files may be available here: C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_w3wp.exe_cd7d09dfc84119d82a2ac6a789038bd5661acfb_cab_128f0e67 Analysis symbol: Rechecking for solution: 0 Report Id: dbf4f691-3b06-11e1-9025-005056a602e6 Report Status: 4 1/9/2012 4:14:07 PM 4 0 1001 Windows Error Reporting N/A SERVERNAME Fault bucket , type 0 Event Name: APPCRASH Response: Not available Cab Id: 0 Problem signature: P1: w3wp.exe P2: 7.5.7601.17514 P3: 4ce7a5f8 P4: StackHash_79d9 P5: 6.1.7601.17514 P6: 4ce7ba58 P7: c0000374 P8: 000ce653 P9: P10: Attached files: C:\Windows\Temp\WER975.tmp.appcompat.txt C:\Windows\Temp\WERA03.tmp.WERInternalMetadata.xml C:\Windows\Temp\WERA13.tmp.hdmp C:\Windows\Temp\WERD21.tmp.mdmp These files may be available here: C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_w3wp.exe_cd7d09dfc84119d82a2ac6a789038bd5661acfb_cab_128f0e67 Analysis symbol: Rechecking for solution: 0 Report Id: dbf4f691-3b06-11e1-9025-005056a602e6 Report Status: 0 1/9/2012 4:14:12 PM 1 100 1000 Application Error N/A SERVERNAME Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7a5f8 Faulting module name: ntdll.dll, version: 6.1.7601.17514, time stamp: 0x4ce7ba58 Exception code: 0xc0000374 Fault offset: 0x000ce653 Faulting process id: 0x16ac Faulting application start time: 0x01cccf139f475c0c Faulting application path: C:\Windows\SysWOW64\inetsrv\w3wp.exe Faulting module path: C:\Windows\SysWOW64\ntdll.dll Report Id: e03bae70-3b06-11e1-9025-005056a602e6 1/9/2012 4:14:16 PM 4 0 1001 Windows Error Reporting N/A SERVERNAME Fault bucket , type 0 Event Name: APPCRASH Response: Not available Cab Id: 0 Problem signature: P1: w3wp.exe P2: 7.5.7601.17514 P3: 4ce7a5f8 P4: StackHash_9c6c P5: 6.1.7601.17514 P6: 4ce7ba58 P7: c0000374 P8: 000ce653 P9: P10: Attached files: C:\Windows\Temp\WER2579.tmp.appcompat.txt C:\Windows\Temp\WER25F7.tmp.WERInternalMetadata.xml C:\Windows\Temp\WER25F8.tmp.hdmp C:\Windows\Temp\WER28F6.tmp.mdmp These files may be available here: C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_w3wp.exe_c49a67649524ad11b64bbf809211bc5ba742a3d6_cab_0b63321b Analysis symbol: Rechecking for solution: 0 Report Id: e03bae70-3b06-11e1-9025-005056a602e6 Report Status: 4 1/9/2012 4:14:16 PM 4 0 1001 Windows Error Reporting N/A SERVERNAME Fault bucket , type 0 Event Name: APPCRASH Response: Not available Cab Id: 0 Problem signature: P1: w3wp.exe P2: 7.5.7601.17514 P3: 4ce7a5f8 P4: StackHash_9c6c P5: 6.1.7601.17514 P6: 4ce7ba58 P7: c0000374 P8: 000ce653 P9: P10: Attached files: C:\Windows\Temp\WER2579.tmp.appcompat.txt C:\Windows\Temp\WER25F7.tmp.WERInternalMetadata.xml C:\Windows\Temp\WER25F8.tmp.hdmp C:\Windows\Temp\WER28F6.tmp.mdmp These files may be available here: C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_w3wp.exe_c49a67649524ad11b64bbf809211bc5ba742a3d6_cab_0b63321b Analysis symbol: Rechecking for solution: 0 Report Id: e03bae70-3b06-11e1-9025-005056a602e6 Report Status: 0 1/9/2012 4:14:21 PM 1 100 1000 Application Error N/A SERVERNAME Faulting application name: w3wp.exe, version: 7.5.7601.17514, time stamp: 0x4ce7a5f8 Faulting module name: ntdll.dll, version: 6.1.7601.17514, time stamp: 0x4ce7ba58 Exception code: 0xc0000374 Fault offset: 0x000ce653 Faulting process id: 0x17f8 Faulting application start time: 0x01cccf13a4ba5126 Faulting application path: C:\Windows\SysWOW64\inetsrv\w3wp.exe Faulting module path: C:\Windows\SysWOW64\ntdll.dll Report Id: e57a0a85-3b06-11e1-9025-005056a602e6 1/9/2012 4:14:21 PM 4 0 1001 Windows Error Reporting N/A SERVERNAME Fault bucket , type 0 Event Name: APPCRASH Response: Not available Cab Id: 0 Problem signature: P1: w3wp.exe P2: 7.5.7601.17514 P3: 4ce7a5f8 P4: StackHash_9c6c P5: 6.1.7601.17514 P6: 4ce7ba58 P7: c0000374 P8: 000ce653 P9: P10: Attached files: These files may be available here: C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_w3wp.exe_c49a67649524ad11b64bbf809211bc5ba742a3d6_1cfb4872 Analysis symbol: Rechecking for solution: 0 Report Id: e57a0a85-3b06-11e1-9025-005056a602e6 Report Status: 4 1/9/2012 4:14:21 PM 4 0 1001 Windows Error Reporting N/A SERVERNAME Fault bucket , type 0 Event Name: APPCRASH Response: Not available Cab Id: 0 Problem signature: P1: w3wp.exe P2: 7.5.7601.17514 P3: 4ce7a5f8 P4: StackHash_9c6c P5: 6.1.7601.17514 P6: 4ce7ba58 P7: c0000374 P8: 000ce653 P9: P10: Attached files: These files may be available here: C:\ProgramData\Microsoft\Windows\WER\ReportQueue\AppCrash_w3wp.exe_c49a67649524ad11b64bbf809211bc5ba742a3d6_1cfb4872 Analysis symbol: Rechecking for solution: 0 Report Id: e57a0a85-3b06-11e1-9025-005056a602e6 Report Status: 0 None of the files referenced actually exist (not even in WER ReportArchive). These should not be the only events mentioned. The log file has been cleared twice since January 9, so those events should not even be listed at all.

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UIPageControl bug: showing one bullet first and then showing everything

- by user313551

I have some strange behavior using a UIPageControl: First it appears showing only one bullet, then when I move the scroll view all the bullets appear correctly. Is there something I'm missing before I add it as a subview? Here is my code imageScrollView.h : @interface ImageScrollView : UIView <UIScrollViewDelegate> { NSMutableDictionary *photos; BOOL *pageControlIsChangingPage; UIPageControl *pageControl; } @property (nonatomic, copy) NSMutableDictionary *photos; @property (nonatomic, copy) UIPageControl *pageControl; @end Here is the code for imageScrollView.m: #import "ImageScrollView.h" @implementation ImageScrollView @synthesize photos, pageControl; - (id)initWithFrame:(CGRect)frame { if ((self = [super initWithFrame:frame])) { // Initialization code NSLog(@"%@",pageControl); } return self; } - (void) drawRect:(CGRect)rect { [self removeAllSubviews]; UIScrollView *scroller = [[UIScrollView alloc] initWithFrame:CGRectMake(0,0,self.frame.size.width,self.frame.size.height)]; [scroller setDelegate:self]; [scroller setBackgroundColor:[UIColor grayColor]]; [scroller setShowsHorizontalScrollIndicator:NO]; [scroller setPagingEnabled:YES]; NSUInteger nimages = 0; CGFloat cx= 0; for (NSDictionary *myDictionaryObject in photos) { if (![myDictionaryObject isKindOfClass:[NSNull class]]) { NSString *photo =[NSString stringWithFormat:@"http://www.techbase.com.mx/blog/%@", [myDictionaryObject objectForKey:@"filepath"]]; NSDictionary *data = [myDictionaryObject objectForKey:@"data"]; UIView *imageContainer = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height - 30)]; TTImageView *imageView = [[TTImageView alloc] initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height - 30)]; imageView.urlPath=photo; [imageContainer addSubview:imageView]; UILabel *caption = [[UILabel alloc] initWithFrame:CGRectMake(0,imageView.frame.size.height,imageView.frame.size.width,10)]; [caption setText:[NSString stringWithFormat:@"%@",[data objectForKey:@"description"]]]; [caption setBackgroundColor:[UIColor grayColor]]; [caption setTextColor:[UIColor whiteColor]]; [caption setLineBreakMode:UILineBreakModeWordWrap]; [caption setNumberOfLines:0]; [caption sizeToFit]; [caption setFont:[UIFont fontWithName:@"Georgia" size:10.0]]; [imageContainer addSubview:caption]; CGRect rect = imageContainer.frame; rect.size.height = imageContainer.size.height; rect.size.width = imageContainer.size.width; rect.origin.x = ((scroller.frame.size.width - scroller.size.width) / 2) + cx; rect.origin.y = ((scroller.frame.size.height - scroller.size.height) / 2); imageContainer.frame=rect; [scroller addSubview:imageContainer]; [imageView release]; [imageContainer release]; [caption release]; nimages++; cx +=scroller.frame.size.width; } } [scroller setContentSize:CGSizeMake(nimages * self.frame.size.width, self.frame.size.height)]; [self addSubview:scroller]; pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(self.frame.size.width/2, self.frame.size.height -20, (self.frame.size.width/nimages)/2, 20)]; pageControl.numberOfPages=nimages; [self addSubview:pageControl]; [scroller release]; } -(void)dealloc { [pageControl release]; [super dealloc]; } -(void)scrollViewDidScroll:(UIScrollView *)_scrollView{ if(pageControlIsChangingPage){ return; } CGFloat pageWidth = _scrollView.frame.size.width; int page = floor((_scrollView.contentOffset.x - pageWidth /2) / pageWidth) + 1; pageControl.currentPage = page; } -(void)scrollViewDidEndDecelerating:(UIScrollView *)_scrollView{ pageControlIsChangingPage = NO; } @end

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Writing a code example

- by Stefano Borini

I would like to have your feedback regarding code examples. One of the most frustrating experiences I sometimes have when learning a new technology is finding useless examples. I think an example as the most precious thing that comes with a new library, language, or technology. It must be a starting point, a wise and unadulterated explanation on how to achieve a given result. A perfect example must have the following characteristics: Self contained: it should be small enough to be compiled or executed as a single program, without dependencies or complex makefiles. An example is also a strong functional test if you correctly installed the new technology. The more issues could arise, the more likely is that something goes wrong, and the more difficult is to debug and solve the situation. Pertinent: it should demonstrate one, and only one, specific feature of your software/library, involving the minimal additional behavior from external libraries. Helpful: the code should bring you forward, step by step, using comments or self-documenting code. Extensible: the example code should be a small “framework” or blueprint for additional tinkering. A learner can start by adding features to this blueprint. Recyclable: it should be possible to extract parts of the example to use in your own code Easy: An example code is not the place to show your code-fu skillz. Keep it easy. helpful acronym: SPHERE. Prototypical examples of violations of those rules are the following: Violation of self-containedness: an example spanning multiple files without any real need for it. If your example is a python program, keep everything into a single module file. Don’t sub-modularize it. In Java, try to keep everything into a single class, unless you really must partition some entity into a meaningful object you need to pass around (and java mandates one class per file, if I remember correctly). Violation of Pertinency: When showing how many different shapes you can draw, adding radio buttons and complex controls with all the possible choices for point shapes is a bad idea. You de-focalize your example code, introducing code for event handling, controls initialization etc., and this is not part the feature you want to demonstrate, they are unnecessary noise in the understanding of the crucial mechanisms providing the feature. Violation of Helpfulness: code containing dubious naming, wrong comments, hacks, and functions longer than one page of code. Violation of Extensibility: badly factored code that have everything into a single function, with potentially swappable entities embedded within the code. Example: if an example reads data from a file and displays it, create a method getData() returning a useful entity, instead of opening the file raw and plotting the stuff. This way, if the user of the library needs to read data from a HTTP server instead, he just has to modify the getData() module and use the example almost as-is. Another violation of Extensibility comes if the example code is not under a fully liberal (e.g. MIT or BSD) license. Violation of Recyclability: when the code layout is so intermingled that is difficult to easily copy and paste parts of it and recycle them into another program. Again, licensing is also a factor. Violation of Easiness: Yes, you are a functional-programming nerd and want to show how cool you are by doing everything on a single line of map, filter and so on, but that could not be helpful to someone else, who is already under pressure to understand your library, and now has to understand your code as well. And in general, the final rule: if it takes more than 10 minutes to do the following: compile the code, run it, read the source, and understand it fully, it means that the example is not a good one. Please let me know your opinion, either positive or negative, or experience on this regard.

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Approaches for generic, compile-time safe lazy-load methods

- by Aaronaught

Suppose I have created a wrapper class like the following: public class Foo : IFoo { private readonly IFoo innerFoo; public Foo(IFoo innerFoo) { this.innerFoo = innerFoo; } public int? Bar { get; set; } public int? Baz { get; set; } } The idea here is that the innerFoo might wrap data-access methods or something similarly expensive, and I only want its GetBar and GetBaz methods to be invoked once. So I want to create another wrapper around it, which will save the values obtained on the first run. It's simple enough to do this, of course: int IFoo.GetBar() { if ((Bar == null) && (innerFoo != null)) Bar = innerFoo.GetBar(); return Bar ?? 0; } int IFoo.GetBaz() { if ((Baz == null) && (innerFoo != null)) Baz = innerFoo.GetBaz(); return Baz ?? 0; } But it gets pretty repetitive if I'm doing this with 10 different properties and 30 different wrappers. So I figured, hey, let's make this generic: T LazyLoad<T>(ref T prop, Func<IFoo, T> loader) { if ((prop == null) && (innerFoo != null)) prop = loader(innerFoo); return prop; } Which almost gets me where I want, but not quite, because you can't ref an auto-property (or any property at all). In other words, I can't write this: int IFoo.GetBar() { return LazyLoad(ref Bar, f => f.GetBar()); // <--- Won't compile } Instead, I'd have to change Bar to have an explicit backing field and write explicit getters and setters. Which is fine, except for the fact that I end up writing even more redundant code than I was writing in the first place. Then I considered the possibility of using expression trees: T LazyLoad<T>(Expression<Func<T>> propExpr, Func<IFoo, T> loader) { var memberExpression = propExpr.Body as MemberExpression; if (memberExpression != null) { // Use Reflection to inspect/set the property } } This plays nice with refactoring - it'll work great if I do this: return LazyLoad(f => f.Bar, f => f.GetBar()); But it's not actually safe, because someone less clever (i.e. myself in 3 days from now when I inevitably forget how this is implemented internally) could decide to write this instead: return LazyLoad(f => 3, f => f.GetBar()); Which is either going to crash or result in unexpected/undefined behaviour, depending on how defensively I write the LazyLoad method. So I don't really like this approach either, because it leads to the possibility of runtime errors which would have been prevented in the first attempt. It also relies on Reflection, which feels a little dirty here, even though this code is admittedly not performance-sensitive. Now I could also decide to go all-out and use DynamicProxy to do method interception and not have to write any code, and in fact I already do this in some applications. But this code is residing in a core library which many other assemblies depend on, and it seems horribly wrong to be introducing this kind of complexity at such a low level. Separating the interceptor-based implementation from the IFoo interface by putting it into its own assembly doesn't really help; the fact is that this very class is still going to be used all over the place, must be used, so this isn't one of those problems that could be trivially solved with a little DI magic. The last option I've already thought of would be to have a method like: T LazyLoad<T>(Func<T> getter, Action<T> setter, Func<IFoo, T> loader) { ... } This option is very "meh" as well - it avoids Reflection but is still error-prone, and it doesn't really reduce the repetition that much. It's almost as bad as having to write explicit getters and setters for each property. Maybe I'm just being incredibly nit-picky, but this application is still in its early stages, and it's going to grow substantially over time, and I really want to keep the code squeaky-clean. Bottom line: I'm at an impasse, looking for other ideas. Question: Is there any way to clean up the lazy-loading code at the top, such that the implementation will: Guarantee compile-time safety, like the ref version; Actually reduce the amount of code repetition, like the Expression version; and Not take on any significant additional dependencies? In other words, is there a way to do this just using regular C# language features and possibly a few small helper classes? Or am I just going to have to accept that there's a trade-off here and strike one of the above requirements from the list?

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Soft keyboard "del" key fails in EditText on Gallery widget

- by droidful

Hi, I am developing an application in Eclipse build ID 20090920-1017 using android SDK 2.2 and testing on a Google Nexus One. For the purposes of the tests below I am using the IME "Android keyboard" on a non-rooted phone. I have an EditText widget which exhibits some very strange behavior. I can type text, and then press the "del" key to delete that text; but after I enter a 'space' character, the "del" key will no longer remove characters before that space character. An example speaks a thousand words, so consider the following two incredibly simple applications... Example 1: An EditText in a LinearLayout widget: package com.example.linear.edit; import android.app.Activity; import android.os.Bundle; import android.view.ViewGroup.LayoutParams; import android.widget.EditText; import android.widget.Gallery; import android.widget.LinearLayout; public class LinearEdit extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); LinearLayout layout = new LinearLayout(getApplicationContext()); layout.setLayoutParams(new Gallery.LayoutParams(Gallery.LayoutParams.MATCH_PARENT, Gallery.LayoutParams.MATCH_PARENT)); EditText edit = new EditText(getApplicationContext()); layout.addView(edit, new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)); setContentView(layout); } } Run the above application, enter text "edit example", then press the "del" key several times until the entire sentence is deleted. Everything Works fine. Now consider example 2: An EditText in a Gallery widget: package com.example.gallery.edit; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.ViewGroup; import android.view.ViewGroup.LayoutParams; import android.widget.ArrayAdapter; import android.widget.EditText; import android.widget.Gallery; import android.widget.LinearLayout; public class GalleryEdit extends Activity { private final String[] galleryData = {"string1", "string2", "string3"}; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); Gallery gallery = new Gallery(getApplicationContext()); gallery.setAdapter(new ArrayAdapter(getApplicationContext(), android.R.layout.simple_list_item_1, galleryData) { @Override public View getView(int position, View convertView, ViewGroup parent) { LinearLayout layout = new LinearLayout(getApplicationContext()); layout.setLayoutParams(new Gallery.LayoutParams(Gallery.LayoutParams.MATCH_PARENT, Gallery.LayoutParams.MATCH_PARENT)); EditText edit = new EditText(getApplicationContext()); layout.addView(edit, new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT)); return layout; } }); setContentView(gallery); } } Run the above application, enter text "edit example", then press the "del" key several times. If you are getting the same problem as me then you will find that you can't deleted past the 'space' character. All is not well. If anyone could shed some light on this issue I would be most appreciative. Regards

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Why do jQuery fadeIn() and fadeOut() seem quirky in this example?

- by Ben McCormack

I've been playing with jQuery in an ASP.NET project and am finding some odd behavior with the .fadeIn() and fadeOut() functions. In the below example, a click on the button (ID Button1) is supposed to cause both the span of text with ID Label1 and the the button with the ID TextBox1 to do the following things: Fade Out Change the text of both the text box and the span of text to be You clicked the button Fade In Based on the browser I'm using, I get 3 different scenarios, and each element functions differently in each situation. Here's what happens when I actually click the button: TextBox1: In IE8, the text box fades out, changes text, then fades back in In IE8 Compatibility View, the text box fades out, changes text, then fades back in. However, the text in the box looks a little different than before the button was clicked. In FireFox 3.5.8, the text box doesn't fade out (but it does "pause" for the amount of time the fade would take), does change the text, then seems to "pause" again where it would be fading in. Label1: In IE8, the label doesn't fade out (but it does "pause" for the amount of time the fade would take), does change the text, then seems to "pause" again where it would be fading in. In IE8 Compatibility View, the label does fade out, change text, and fades back in, but the text looks a little different than before the button was clicked. In FireFox 3.5.8, the label doesn't fade out (but it does "pause" for the amount of time the fade would take), does change the text, then seems to "pause" again where it would be fading in. Two questions: What's going in to make each element to behave differently in different browsers? Is there a better way to get the functionality I'm looking for across multiple platforms? Here's the source code of the file: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head><title> </title> <script src="http://ajax.microsoft.com/ajax/jQuery/jquery-1.4.1-vsdoc.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function() { $("#Button1").click(function(event) { $("#Label1").fadeOut("slow", function() { $(this).text("You clicked the button"); $(this).fadeIn("slow"); }); $("#TextBox1").fadeOut("slow", function() { $(this).val("You clicked the button").fadeIn("slow"); $(this).fadeIn("slow"); }); event.preventDefault(); }); $("a").click(function(event) { $("#Label1").text("You clicked the link"); $("#TextBox1").val("You clicked the link"); event.preventDefault(); }); }); </script> </head> <body> <form name="form1" method="post" action="Default.aspx" id="form1"> <div> <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUJNTQwMjM5ODcyZGT6OfedWuFhLrSUyp+gwkCEueddvg==" /> </div> <div> <input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWAwK56uWtBwLs0bLrBgKM54rGBotkyyA5RRsPBGNaPTPCe7F5ARwv" /> </div> <div> <span id="Label1" style="color:#009900;">Type Something Here:</span>   <a href="http://www.google.com">This is a test Link</a> <input name="TextBox1" type="text" value="test" id="TextBox1" style="width:258px;" /> <br /> <br /> <input type="submit" name="Button1" value="Button" id="Button1" /> </div> </form> </body> </html>

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HTML + javascript mouse over, mouseout, onclick not working in firefox.

- by help_inmssql

Hello Everyone, My question is to get onMouseover,onMouseout,onMousedown,onClick on a table row. For which i am calling javascript userdefined functions. onMouseover --- Background color should change. onMouseout --- Reset to original color onClick --- First column checkbox/radio button should be set and background color should change onMousedown --- background color should change. My code in html is:- <tr onMouseOver="hover(this)" onMouseOut="hover_out(this)" onMouseDown="get_first_state(this)" onClick="checkit(this)" > and the methods in javascripts are:- var first_state = false; var oldcol = '#ffffff'; var oldcol_cellarray = new Array(); function hover(element) { if (! element) element = this; while (element.tagName != 'TR') { element = element.parentNode; } if (element.style.fontWeight != 'bold') { for (var i = 0; i<element.cells.length; i++) { if (element.cells[i].className != "no_hover") { oldcol_cellarray[i] = element.cells[i].style.backgroundColor; element.cells[i].style.backgroundColor='#e6f6f6'; } } } } // ----------------------------------------------------------------------------------------------- function hover_out(element) { if (! element) element = this; while (element.tagName != 'TR') { element = element.parentNode; } if (element.style.fontWeight != 'bold') { for (var i = 0; i<element.cells.length; i++) { if (element.cells[i].className != "no_hover") { if (typeof oldcol_cellarray != undefined) { element.cells[i].style.backgroundColor=oldcol_cellarray[i]; } else { element.cells[i].style.backgroundColor='#ffffff'; } //var oldcol_cellarray = new Array(); } } } } // ----------------------------------------------------------------------------------------------- function get_first_state(element) { while (element.tagName != 'TR') { element = element.parentNode; } first_state = element.cells[0].firstChild.checked; } // ----------------------------------------------------------------------------------------------- function checkit (element) { while (element.tagName != 'TR') { element = element.parentNode; } if (element.cells[0].firstChild.type == 'radio') { var typ = 0; } else if (element.cells[0].firstChild.type == 'checkbox') { typ = 1; } if (element.cells[0].firstChild.checked == true && typ == 1) { if (element.cells[0].firstChild.checked == first_state) { element.cells[0].firstChild.checked = false; } set_rowstyle(element, element.cells[0].firstChild.checked); } else { if (typ == 0 || element.cells[0].firstChild.checked == first_state) { element.cells[0].firstChild.checked = true; } set_rowstyle(element, element.cells[0].firstChild.checked); } if (typ == 0) { var table = element.parentNode; if (table.tagName != "TABLE") { table = table.parentNode; } if (table.tagName == "TABLE") { table=table.tBodies[0].rows; //var table = document.getElementById("js_tb").tBodies[0].rows; for (var i = 1; i< table.length; i++) { if (table[i].cells[0].firstChild.checked == true && table[i] != element) { table[i].cells[0].firstChild.checked = false; } if (table[i].cells[0].firstChild.checked == false) { set_rowstyle(table[i], false); } } } } } function set_rowstyle(r, on) { if (on == true) { for (var i =0; i < r.cells.length; i++) { r.style.fontWeight = 'bold'; r.cells[i].style.backgroundColor = '#f2f2c2'; } } else { for ( i =0; i < r.cells.length; i++) { r.style.fontWeight = 'normal'; r.cells[i].style.backgroundColor = '#ffffff'; } } } It is working as expected in IE. But coming to firefox i am surprised on seeing the output after so much of coding. In Firefox:-- onMouseOver is working as expected. color change of that particular row. onClick -- Setting the background color permenantly..eventhough i do onmouseover on different rows. the clicked row color is not reset to white. -- not as expected onclick on 2 rows..the background of both the rows is set...not as expected i.e if i click on all the rows..background color of everything is changed... Eventhough i click on the row. First column i.e radio button or checkbox is not set.. Please help me to solve this issue in firefox. Do let me know where my code needs to be changed... Thanks in advance!!

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VFS: file-max limit 1231582 reached

- by Rick Koshi

I'm running a Linux 2.6.36 kernel, and I'm seeing some random errors. Things like ls: error while loading shared libraries: libpthread.so.0: cannot open shared object file: Error 23 Yes, my system can't consistently run an 'ls' command. :( I note several errors in my dmesg output: # dmesg | tail [2808967.543203] EXT4-fs (sda3): re-mounted. Opts: (null) [2837776.220605] xv[14450] general protection ip:7f20c20c6ac6 sp:7fff3641b368 error:0 in libpng14.so.14.4.0[7f20c20a9000+29000] [4931344.685302] EXT4-fs (md16): re-mounted. Opts: (null) [4982666.631444] VFS: file-max limit 1231582 reached [4982666.764240] VFS: file-max limit 1231582 reached [4982767.360574] VFS: file-max limit 1231582 reached [4982901.904628] VFS: file-max limit 1231582 reached [4982964.930556] VFS: file-max limit 1231582 reached [4982966.352170] VFS: file-max limit 1231582 reached [4982966.649195] top[31095]: segfault at 14 ip 00007fd6ace42700 sp 00007fff20746530 error 6 in libproc-3.2.8.so[7fd6ace3b000+e000] Obviously, the file-max errors look suspicious, being clustered together and recent. # cat /proc/sys/fs/file-max 1231582 # cat /proc/sys/fs/file-nr 1231712 0 1231582 That also looks a bit odd to me, but the thing is, there's no way I have 1.2 million files open on this system. I'm the only one using it, and it's not visible to anyone outside the local network. # lsof | wc 16046 148253 1882901 # ps -ef | wc 574 6104 44260 I saw some documentation saying: file-max & file-nr: The kernel allocates file handles dynamically, but as yet it doesn't free them again. The value in file-max denotes the maximum number of file- handles that the Linux kernel will allocate. When you get lots of error messages about running out of file handles, you might want to increase this limit. Historically, the three values in file-nr denoted the number of allocated file handles, the number of allocated but unused file handles, and the maximum number of file handles. Linux 2.6 always reports 0 as the number of free file handles -- this is not an error, it just means that the number of allocated file handles exactly matches the number of used file handles. Attempts to allocate more file descriptors than file-max are reported with printk, look for "VFS: file-max limit reached". My first reading of this is that the kernel basically has a built-in file descriptor leak, but I find that very hard to believe. It would imply that any system in active use needs to be rebooted every so often to free up the file descriptors. As I said, I can't believe this would be true, since it's normal to me to have Linux systems stay up for months (even years) at a time. On the other hand, I also can't believe that my nearly-idle system is holding over a million files open. Does anyone have any ideas, either for fixes or further diagnosis? I could, of course, just reboot the system, but I don't want this to be a recurring problem every few weeks. As a stopgap measure, I've quit Firefox, which was accounting for almost 2000 lines of lsof output (!) even though I only had one window open, and now I can run 'ls' again, but I doubt that will fix the problem for long. (edit: Oops, spoke too soon. By the time I finished typing out this question, the symptom was/is back) Thanks in advance for any help. And another update: My system was basically unusable, so I decided I had no option but to reboot. But before I did, I carefully quit one process at a time, checking /proc/sys/fs/file-nr after each termination. I found that, predictably, the number of open files gradually went down as I closed things down. Unfortunately, it wasn't a large effect. Yes, I was able to clear up 5000-10000 open files, but there were still over 1.2 million left. I shut down just about everything. All interactive shells, except for the one ssh I left open to finish closing down, httpd, even nfs service. Basically everything in the process table that wasn't a kernel process, and there were still an appalling number of files apparently left open. After the reboot, I found that /proc/sys/fs/file-nr showed about 2000 files open, which is much more reasonable. Starting up 2 Xvnc sessions as usual, along with the dozen or so monitoring windows I like to keep open, brought the total up to about 4000 files. I can see nothing wrong with that, of course, but I've obviously failed to identify the root cause. I'm still looking for ideas, since I definitely expect it to happen again. And another update, the next day: I watched the system carefully, and discovered that /proc/sys/fs/file-nr showed a growth of about 900 open files per hour. I shut down the system's only NFS client for the night, and the growth stopped. Mind you, it didn't free up the resources, but it did at least stop consuming more. Is this a known bug with NFS? I'll be bringing the NFS client back online today, and I'll narrow it down further. If anyone is familiar with this behavior, feel free to jump in with "Yeah, NFS4 has this problem, go back to NFS3" or something like that.

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Why does File::Slurp return a scalar when it should return a list?

- by BrianH

I am new to the File::Slurp module, and on my first test with it, it was not giving the results I was expecting. It took me a while to figure it out, so now I am interested in why I was seeing this certain behavior. My call to File::Slurp looked like this: my @array = read_file( $file ) || die "Cannot read $file\n"; I included the "die" part because I am used to doing that when opening files. My @array would always end up with the entire contents of the file in the first element of the array. Finally I took out the "|| die" section, and it started working as I expected. Here is an example to illustrate: perl -de0 Loading DB routines from perl5db.pl version 1.22 Editor support available. Enter h or `h h' for help, or `man perldebug' for more help. main::(-e:1): 0 DB<1> use File::Slurp DB<2> $file = '/usr/java6_64/copyright' DB<3> x @array1 = read_file( $file ) 0 'Licensed material - Property of IBM.' 1 'IBM(R) SDK, Java(TM) Technology Edition, Version 6' 2 'IBM(R) Runtime Environment, Java(TM) Technology Edition, Version 6' 3 '' 4 'Copyright Sun Microsystems Inc, 1992, 2008. All rights reserved.' 5 'Copyright IBM Corporation, 1998, 2009. All rights reserved.' 6 '' 7 'The Apache Software License, Version 1.1 and Version 2.0' 8 'Copyright 1999-2007 The Apache Software Foundation. All rights reserved.' 9 '' 10 'Other copyright acknowledgements can be found in the Notices file.' 11 '' 12 'The Java technology is owned and exclusively licensed by Sun Microsystems Inc.' 13 'Java and all Java-based trademarks and logos are trademarks or registered' 14 'trademarks of Sun Microsystems Inc. in the United States and other countries.' 15 '' 16 'US Govt Users Restricted Rights - Use duplication or disclosure' 17 'restricted by GSA ADP Schedule Contract with IBM Corp.' DB<4> x @array2 = read_file( $file ) || die "Cannot read $file\n"; 0 'Licensed material - Property of IBM. IBM(R) SDK, Java(TM) Technology Edition, Version 6 IBM(R) Runtime Environment, Java(TM) Technology Edition, Version 6 Copyright Sun Microsystems Inc, 1992, 2008. All rights reserved. Copyright IBM Corporation, 1998, 2009. All rights reserved. The Apache Software License, Version 1.1 and Version 2.0 Copyright 1999-2007 The Apache Software Foundation. All rights reserved. Other copyright acknowledgements can be found in the Notices file. The Java technology is owned and exclusively licensed by Sun Microsystems Inc. Java and all Java-based trademarks and logos are trademarks or registered trademarks of Sun Microsystems Inc. in the United States and other countries. US Govt Users Restricted Rights - Use duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. ' Why does the || die make a difference? I have a feeling this might be more of a Perl precedence question instead of a File::Slurp question. I looked in the File::Slurp module and it looks like it is set to croak if there is a problem, so I guess the proper way to do it is to allow File::Slurp to croak for you. Now I'm just curious why I was seeing these differences.

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Jquery Live Function

- by marharépa

Hi! I want to make this script to work as LIVE() function. Please help me! $(".img img").each(function() { $(this).cjObjectScaler({ destElem: $(this).parent(), method: "fit" }); }); the cjObjectScaler script (called in the html header) is this: (thanks for Doug Jones) (function ($) { jQuery.fn.imagesLoaded = function (callback) { var elems = this.filter('img'), len = elems.length; elems.bind('load', function () { if (--len <= 0) { callback.call(elems, this); } }).each(function () { // cached images don't fire load sometimes, so we reset src. if (this.complete || this.complete === undefined) { var src = this.src; // webkit hack from http://groups.google.com/group/jquery-dev/browse_thread/thread/eee6ab7b2da50e1f this.src = '#'; this.src = src; } }); }; })(jQuery); /* CJ Object Scaler */ (function ($) { jQuery.fn.cjObjectScaler = function (options) { /* user variables (settings) ***************************************/ var settings = { // must be a jQuery object method: "fill", // the parent object to scale our object into destElem: null, // fit|fill fade: 0 // if positive value, do hide/fadeIn }; /* system variables ***************************************/ var sys = { // function parameters version: '2.1.1', elem: null }; /* scale the image ***************************************/ function scaleObj(obj) { // declare some local variables var destW = jQuery(settings.destElem).width(), destH = jQuery(settings.destElem).height(), ratioX, ratioY, scale, newWidth, newHeight, borderW = parseInt(jQuery(obj).css("borderLeftWidth"), 10) + parseInt(jQuery(obj).css("borderRightWidth"), 10), borderH = parseInt(jQuery(obj).css("borderTopWidth"), 10) + parseInt(jQuery(obj).css("borderBottomWidth"), 10), objW = jQuery(obj).width(), objH = jQuery(obj).height(); // check for valid border values. IE takes in account border size when calculating width/height so just set to 0 borderW = isNaN(borderW) ? 0 : borderW; borderH = isNaN(borderH) ? 0 : borderH; // calculate scale ratios ratioX = destW / jQuery(obj).width(); ratioY = destH / jQuery(obj).height(); // Determine which algorithm to use if (!jQuery(obj).hasClass("cf_image_scaler_fill") && (jQuery(obj).hasClass("cf_image_scaler_fit") || settings.method === "fit")) { scale = ratioX < ratioY ? ratioX : ratioY; } else if (!jQuery(obj).hasClass("cf_image_scaler_fit") && (jQuery(obj).hasClass("cf_image_scaler_fill") || settings.method === "fill")) { scale = ratioX < ratioY ? ratioX : ratioY; } // calculate our new image dimensions newWidth = parseInt(jQuery(obj).width() * scale, 10) - borderW; newHeight = parseInt(jQuery(obj).height() * scale, 10) - borderH; // Set new dimensions & offset jQuery(obj).css({ "width": newWidth + "px", "height": newHeight + "px"//, // "position": "absolute", // "top": (parseInt((destH - newHeight) / 2, 10) - parseInt(borderH / 2, 10)) + "px", // "left": (parseInt((destW - newWidth) / 2, 10) - parseInt(borderW / 2, 10)) + "px" }).attr({ "width": newWidth, "height": newHeight }); // do our fancy fade in, if user supplied a fade amount if (settings.fade > 0) { jQuery(obj).fadeIn(settings.fade); } } /* set up any user passed variables ***************************************/ if (options) { jQuery.extend(settings, options); } /* main ***************************************/ return this.each(function () { sys.elem = this; // if they don't provide a destObject, use parent if (settings.destElem === null) { settings.destElem = jQuery(sys.elem).parent(); } // need to make sure the user set the parent's position. Things go bonker's if not set. // valid values: absolute|relative|fixed if (jQuery(settings.destElem).css("position") === "static") { jQuery(settings.destElem).css({ "position": "relative" }); } // if our object to scale is an image, we need to make sure it's loaded before we continue. if (typeof sys.elem === "object" && typeof settings.destElem === "object" && typeof settings.method === "string") { // if the user supplied a fade amount, hide our image if (settings.fade > 0) { jQuery(sys.elem).hide(); } if (sys.elem.nodeName === "IMG") { // to fix the weird width/height caching issue we set the image dimensions to be auto; jQuery(sys.elem).width("auto"); jQuery(sys.elem).height("auto"); // wait until the image is loaded before scaling jQuery(sys.elem).imagesLoaded(function () { scaleObj(this); }); } else { scaleObj(jQuery(sys.elem)); } } else { console.debug("CJ Object Scaler could not initialize."); return; } }); }; })(jQuery);

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How to write specs with MSpec for code that changes Thread.CurrentPrincipal?

- by Dan Jensen

I've been converting some old specs to MSpec (were using NUnit/SpecUnit). The specs are for a view model, and the view model in question does some custom security checking. We have a helper method in our specs which will setup fake security credentials for the Thread.CurrentPrincipal. This worked fine in the old unit tests, but fails in MSpec. Specifically, I'm getting this exception: "System.Runtime.Serialization.SerializationException: Type is not resolved for member" It happens when part of the SUT tries to read the app config file. If I comment out the line which sets the CurrentPrincipal (or simply call it after the part that checks the config file), the error goes away, but the tests fail due to lack of credentials. Similarly, if I set the CurrentPrincipal to null, the error goes away, but again the tests fail because the credentials aren't set. I've googled this, and found some posts about making sure the custom principal is serializable when it crosses AppDomain boundaries (usually in reference to web apps). In our case, this is not a web app, and I'm not crossing any AppDomains. Our pincipal object is also serializable. I downloaded the source for MSpec, and found that the ConsoleRunner calls a class named AppDomainRunner. I haven't debugged into it, but it looks like it's running the specs in different app domains. So does anyone have any ideas on how I can overcome this? I really like MSpec, and would love to use it exclusively. But I need to be able to supply fake security credentials while running the tests. Thanks! Update: here's the spec class: [Subject(typeof(CountryPickerViewModel))] public class When_the_user_makes_a_selection : PickerViewModelSpecsBase { protected static CountryPickerViewModel picker; Establish context = () => { SetupFakeSecurityCredentials(); CreateFactoryStubs(); StubLookupServicer<ICountryLookupServicer>() .WithData(BuildActiveItems(new [] { "USA", "UK" })); picker = new CountryPickerViewModel(ViewFactory, ViewModelFactory, BusinessLogicFactory, CacheFactory); }; Because of = () => picker.SelectedItem = picker.Items[0]; Behaves_like<Picker_that_has_a_selected_item> a_picker_with_a_selection; } We have a number of these "picker" view models, all of which exhibit some common behavior. So I'm using the Behaviors feature of MSpec. This particular class is simulating the user selecting something from the (WPF) control which is bound to this VM. The SetupFakeSecurityCredentials() method is simply setting Thread.CurrentPrincipal to an instance of our custom principal, where the prinipal has been populated will full-access rights. Here's a fake CountryPickerViewModel which is enough to cause the error: public class CountryPickerViewModel { public CountryPickerViewModel(IViewFactory viewFactory, IViewModelFactory viewModelFactory, ICoreBusinessLogicFactory businessLogicFactory, ICacheFactory cacheFactory) { Items = new Collection<int>(); var validator = ValidationFactory.CreateValidator<object>(); } public int SelectedItem { get; set; } public Collection<int> Items { get; private set; } } It's the ValidationFactory call which blows up. ValidationFactory is an Enterprise Library object, which tries to access the config.

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MSBuild condition across projects

- by Billy Talented

I have tried several solutions for this problem. Enough to know I do not know enough about MSBuild to do this elegantly but I feel like there should be a method. I have a set of libraries for working with .net projects. A few of the projects utilize System.Web.Mvc - which recently released Version 2 - and we are looking forward to the upgrade. Currently sites which reference this library reference it directly by the project(csproj) on the developer's computer - not a built version of the library so that changes and source code case easily be viewed when dealing code from this library. This works quite well and would prefer to not have to switch to binary references (but will if this is the only solution). The problem I have is that because of some of the functionality that was added onto the MVC1 based library (view engines, model binders etc) several of the sites reliant on these libraries need to stay on MVC1 until we have full evaluated and tested them on MVC2. I would prefer to not have to fork or have two copies on each dev machine. So what I would like to be able to do is set a property group value in the referencing web application and have this read by the above mentions library with the caviat that when working directly on the library via its containing solution I would like to be able to control this via Configuration Manager by selecting a build type and that property overriding the build behavior of the solution (i.e. 'Debug - MVC1' vs 'Debug -MVC2') - I have this working via: <Choose> <When Condition=" '$(Configuration)|$(Platform)' == 'Release - MVC2|AnyCPU' Or '$(Configuration)|$(Platform)' == 'Debug - MVC2|AnyCPU'"> <ItemGroup> <Reference Include="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> </Reference> <Reference Include="Microsoft.Web.Mvc, Version=1.0.0.0, Culture=neutral, processorArchitecture=MSIL"> <SpecificVersion>False</SpecificVersion> <HintPath>..\Dependancies\Web\MVC2\Microsoft.Web.Mvc.dll</HintPath> </Reference> </ItemGroup> </When> <Otherwise> <ItemGroup> <Reference Include="System.Web.Mvc, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL"> <SpecificVersion>False</SpecificVersion> <HintPath>..\Dependancies\Web\MVC\System.Web.Mvc.dll</HintPath> </Reference> </ItemGroup> </Otherwise> The item that I am struggling with is the cross solution issue(solution TheWebsite references this project and needs to control which build property to use) that I have not found a way to work with that I think is a solid solution that enabled the build within visual studio to work as it has to date. Other bits: we are using VS2008, Resharper, TeamCity for CI, SVN for source control.

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