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  • Catch and Show an error from a WCF service call in javascript.

    - by cw
    Hello, I'm calling a WCF service through javascript and right now it's not showing any errors that might occur on the service side to the user. I have the code below and am looking for a better way to inform the user an error has occured, including the call stack and error message if possible. The service itself throws a FaultException if an error has occured. However, I want to catch that error in the javascript call and show it to the user. Here is the js code to call the service function Save() { var saveInfo = $("._saveInfo").val() app.namspace.interfacetoservice.Save( saveInfo, function(results) { if (results == true) { window.close(); } else { alert("error saving"); } } ); } Thanks for the help!

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  • Making all links inside of a div call the same function?

    - by Brandon
    I'm trying to make a notification area that will show alerts. return this.each(function() { jQuery('<div class="' + o['className'] + '">' + o.msg + ' + '<a href="#" onclick="$(this).parent().remove(); dismiss(' + o["id"] + ');">X</a>' + '</div>') .appendTo(this); }); This just takes a message pulled from the database, and shows it to the user. If the user clicks the X then it will call dismiss() which will mark it as being read in the database. The thing is, if the message itself contains a link to another page or external site, I also want to call dismiss() before the user leaves the page. Is there anyway to alter this javascript to take all a elements (the X and any links that would appear in the message) and change the onclick to call the function?

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  • Call non-static method in server side(aspx.cs) from client side use javascript (aspx).....

    - by Pramulia
    how Call non-static method in server side(aspx.cs) from client side using javascript (aspx)....? As far as I know I can call static method in server side from client side... server side : [System.Web.Services.WebMethod] public static void method1() { } client side : <script language="JavaScript"> function keyUP() { PageMethods.method1(); } </script> <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true"> </asp:ScriptManager> It works. Now how do I call non-static method from client side...?

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  • .net example of using client certificates in web service call?

    - by Rory
    I'd like to use client certificates to verify the identity of administrative callers to my web service. Then I can issue certificates only to the people I want to call my web service and be pretty sure noone else can call it. This is in a very controlled scenario where only one or two people will get the client certificate, so distribution isn't a hard problem. This article provides a good example of how to call a web service using a client certificate. But how can I check details of the client certificate from within my web service? This old article talks about configuring IIS to do it, but I'd like to do it programmatically within my app. I think? thanks for any suggestions!

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  • Can NSUserDefaults be used for pausing the application during a phone call ?

    - by Anil Kumar
    Friends, currently I dont have iphone to test and using Simulator for testing purposes. I am Just curious to know whether an application continues to run even after a phone call.. here i have no option to test this from simulator. If it terminates then how can i pause things.. and continue after a phone call. Is NSUserDefaults can be used for my case. As far I understood NSuserDefaults are used to store data that is required when the App is next time loaded. But here I dont want my App to terminate instead pause until Call ends and continue as uninterrupted later. Please clear me about this. Sorry I am still a beginner so I request for no harsh replies if my question looks stupid. Thanks in Advance

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  • Why doesn't Perl threading work when I call readdir beforehand?

    - by Kevin
    Whenever I call readdir before I create a thread, I get an error that looks like this: perl(2820,0x7fff70c33ca0) malloc: * error for object 0x10082e600: pointer being freed was not allocated * set a breakpoint in malloc_error_break to debug Abort trap What's strange is that it happens when I call readdir before I create a thread (i.e. readdir is not called in any concurrent code). I don't even use the results from readdir, just making the call to it seems to screw things up. When I get rid of it, things seem to work fine. Some example code is below: opendir(DIR, $someDir); my @allFiles = readdir(DIR); close(DIR); my $thread = threads-create(\&sub1); $thread-join(); sub sub1 { print "in thread\n" }

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  • How can I call an Actionscript function when the .swf is referenced by jQuery?

    - by Arms
    I have an .swf that I am embedding into HTML using the jQuery SWF Object plugin (http://jquery.thewikies.com/swfobject). I have a number of functions within the .swf that I need to call from within javascript functions. I've made these actionscript functions accessible to javascript by calling flash.external.ExternalInterface.addCallback(). Yet nothing happens when I make the call. I've had this happen before and it seems to be that when you reference the .swf from jQuery, you can't call flash functions. Is there anyway around this (aside from not using jQuery)? Thanks.

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  • Why I have to call 'exit' after redirection through header('Location..') in PHP?

    - by Nicolò Martini
    You know that if you want to redirect an user in PHP you can use the header function: header('Location: http://smowhere.com'); It is also well known that it is a good practice to put also an exit; after the header call, to prevent execution of other php code. So my question is: could the code after the header-location call be effectively executed? In which cases? Can a malicious user be able to completely ignore the header('Location..') call? How?

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  • how to call a javascript function in the top frame?

    - by Rory
    This seems really simple, but how do I call a javascript function that's defined in the top-level html, from a child frame? top html doc - 1st level frame - 2nd level frame my top html doc has a function called testFn(). In the 2nd level frame I have a button with onclick="top.testFn();" but this doesn't call the testFn(). In Firebug if I use a watch to execute top.testFn(); it says TypeError: testFn() is not a function. Should this all just work - in which case it's a problem with my documents, or is there some other way to call functions in the top-level window?

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  • Booking logic and architecture, database sync: Hotels, tennis courts reservation system ...

    - by coulix
    Hello Stackers, Imagine that you want to design a tennis booking system. You have 5 tennis clubs as partenrs with no online api allowing you to check on their side if a court is booked or not: You have to build this part as well. Every time a booking is done on their side you want it to be know by our system. Probably using a POST request form tennis partner to our server. Every time a booking is done on our website, we want to push the booking to their system. The difficulty is that their system need to be online and accessible from outside. Ip may change, we have to use a dns updater. In case their system is not available we still accept the booking and fallback to an async email with 'i confirm booking/reject booking' link sent to the club. I find the whole process quite complex and was wondering about the way online hotel booking system and hotel were working. Do they all have their data open and online ? The good thing is that the data will grow large and fits nicely to some no SQL ;) like couch db

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  • Best way to call other class view in iphone?

    - by aman-gupta
    Hi, Generally i call my other class view by creating a pointer of delegate and then call the other class by using its link as below:- First Way :- Mydelegate *ptr = (Mydelegate *)[[UIApplication sharedApplication]delegate]; [self.navigationController pushViewController:ptr.NextClasspointer animated:YES]; Second Way :- Create a pointer of that class which u want to call :-- NextClass *nextptr = [[NextClass alloc]initWithnibName:@"NextClass" bundle:nil]; [self.navigationController pushViewController:nextptr animated:YES]; [nextptr release]; nextptr = nil; These above two methods i generally used but my problem is that which one is best for big project so that my stack problem will be removed I mean memory issue will be solved.And is it necessary to release pointer in first and second case is the way i release is correct or wrong Please help me Thanks in Advance

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  • What happens if an asynchronous delegate call never returns?

    - by RichardHowells
    I found a decent looking example of how to call a delegate asynchronously with a timeout... http://www.eggheadcafe.com/tutorials/aspnet/847c94bf-4b8d-4a66-9ae5-5b61f049019f/basics-make-any-method-c.aspx. In summary it uses WaitOne with a timeout to determine if the call does not return before the timeout expires. I also know that you should have an EndInvoke to match each BeginInvoke. So what happens if the wait timeout expires? We (presumably) DON'T want to call EndInvoke as that will block. The code can go on to do 'other things', but have we leaked anything? Is there some poor thread someplace blocked waiting for a return that's never going to happen? Have we leaked some memory where the result-that-will-never-return was going to be placed?

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  • How can I delete a row in the view only if the AJAX call & db deletion was successful?

    - by user1760663
    I have a table where each row has a button for deletion. Actually I delete the row everytime without checking if the ajax call was successfull. How can I achieve that, so that the row will only be deleted if the ajax call was ok. Here is my clickhandler on each row $("body").on('click', ".ui-icon-trash" ,function(){ var $closestTr = $(this).closest('tr'); // This will give the closest tr // If the class element is the child of tr deleteRowFromDB(oTable, closestTr); $closestTr.remove() ; // Will delete that }); And here my ajax call function deleteRowFromDB(oTable, sendallproperty){ var deleteEntryRoute = #{jsRoute @Application.deleteConfigurationEntry() /} console.log("route is: " + deleteEntryRoute.url) $.ajax({ url: deleteEntryRoute.url({id: sendallproperty}), type: deleteEntryRoute.method, data: 'id=' + sendallproperty });

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  • How does a cmdlet know when it really should call WriteVerbose()?

    - by Roman Kuzmin
    How does a cmdlet know when it really should call WriteVerbose(), WriteDebug() and etc.? Perhaps I miss something simple but I cannot find the answer. All cmdlet implementations I have seen so far just call WriteVerbose() without any hesitation. I know that it is correct to do so, but it is not effective. Performance suffers when verbose mode is off but a cmdlet still prepares data for WriteVerbose() call, that is, for nothing. In other words, in a cmdlet I would like to be able to: if (<VerboseMode>) { .... data preparation, sometimes expensive ... WriteVerbose(...); } But I don't know how to get this if (<VerboseMode>). Any ideas?

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  • Does the API call ExitProcess() work OK in VB6 if you follow the MS caveats?

    - by Clay Nichols
    Microsoft indicates that VB6 doesn't support ExitProcess (to exit and return a value). However, it indicates that this call can fail under certain circumstances (if a thread hasn't been completed, etc.) so I'm wondering whether this call will work OK (consistently :-) as long as you obey the caveats in the article. I could go a step further and call ExitProcess() from the Sub Main or Form which stared the app. Update: after some more reading (I really did research this a bit before asking ) I found a suggestion to use the TerminateProcess API instead. I'm investigating that option. Any thoughts?

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  • web.config 1.0 and 3.5

    - by kareemsaad
    I had aproblem I had two web site one of them with .net 3.5 and other with 1.0 and I want to run 1.0 in 3.5 but I couldnot and i tried to copy some section from 1.0 to 3.5 as I copied this section <add key="ConnectionString" value="data source=.;persist security info=True;user id=Sharp;Password=#Sharp;initial catalog=Sharp" /> <add key="ACProduct_Upload" value="SiteUploads/ACProducts/" /> <add key="ACPDF_Upload" value="SiteUploads/ACPDF/" /> <add key="ACCertifications_Upload" value="SiteUploads/ACCertifications/" /> <add key="Certifications_Upload" value="SiteUploads/Certifications/" /> <add key="flash" value="flash/" /> <add key="Product_Upload" value="SiteUploads/Products/" /> <add key="PDF_Upload" value="SiteUploads/PDF/" /> <add key="HTML_Upload" value="SiteUploads/HTML_Uploads/" /> <add key="WallPaper_Upload" value="SiteUploads/WallPapers/" /> <add key="News_Upload" value="SiteUploads/News/" /> <add key="mailserver" value="111.111.1.1" /> <add key="fromEmail" value="[email protected]" /> </appSettings> to 3.5 here <add key="ACProduct_Upload" value="SiteUploads/ACProducts/" /> <add key="ACPDF_Upload" value="SiteUploads/ACPDF/" /> <add key="ACCertifications_Upload" value="SiteUploads/ACCertifications/" /> <add key="Certifications_Upload" value="SiteUploads/Certifications/" /> <add key="flash" value="flash/" /> <add key="Product_Upload" value="SiteUploads/Products/" /> <add key="PDF_Upload" value="SiteUploads/PDF/" /> <add key="HTML_Upload" value="SiteUploads/HTML_Uploads/" /> <add key="WallPaper_Upload" value="SiteUploads/WallPapers/" /> <add key="News_Upload" value="SiteUploads/News/" /> <add key="mailserver" value="192.168.6.3" /> <sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/> <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/> <section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/> <section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/> <section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/> </sectionGroup> </sectionGroup> </sectionGroup> <add name="Sharp" connectionString="Data Source=.;Initial Catalog=SharpHA;User ID=SharpHA;Password=#SharpHA;" providerName="System.Data.SqlClient"/> </connectionStrings> but this problem apear Only one element allowed per config file and if present must be the first child of the root element. please any one help me

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  • Does AMD Cool n Quiet Slow Down Your System?

    - by Software Monkey
    I discovered today that having AMD Cool n Quiet enabled in my BIOS appears to be slowing down my Windows XP SP2 system by about 29% on memory & CPU intensive workloads. I was wondering if (a) anyone else had encountered this, (b) anyone can offer an explanation, (c) there are any negatives I need to be aware of if I keep AMD CnQ disabled. With some superficial testing so far, I don't immediately notice any difference with CnQ off (other than the performance being what I expected from this new hardware). It seems to ramp up the CPU fan a little bit as my program maxes out 1 core, but that's the same as with CnQ on. And when I let the system idle the CPU fan slows down and the systems as quiet as a mouse (after years of 6 small fans churning like they want to go into orbit it's nice to again have a system where I can hear the HDDs seeking). Bonus question: Does CnQ cause issues with system stability? I ask because the reason I disabled it was because I have had a few freezes and 1 spontaneous reboot with my new hardware.

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  • Messed up partitions... system will not boot!

    - by someguy
    I did a really dumb thing. cfdisk threw an error at me saying "FATAL ERROR: Bad primary partition 3: Partition ends in the final partial cylinder", so I installed Partition Table Doctor to see if I could fix the problem. When the program started up, it told me there were problems with my partitions, and asked if I wanted them fixed (cannot remember real message, but I believe it had something to do with the cylinder boundaries), so, blindly, without thinking of the consequences, I did. Now, my system will not boot. I tried booting from the Windows 7 installation CD. I went to install a fresh copy, but it said that "No drives were found". I then opened up diskpart. According to diskpart, there is only one partition, containing one volume, assigned the letter "C". Before, I had four partitions! It is also saying that the file system is RAW. Is there any way I can fix this? I have important data that I do not want to lose. Later on... I tried fdisk with the option -l, which lists the partition table(s), and this is what I got: Ignoring extra extended partition 4 Disk /dev/sda: 250.1 GB, 250059350016 bytes 255 heads, 64 sectors/track, 30401 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x163df116 Device Boot Start End Blocks Id System /dev/sda1 6 18 102400 7 HPFS/NTFS Partition 1 does not end on cylinder boundary. /dev/sda2 18 7851 62918572+ 7 HPFS/NTFS /dev/sda3 13073 30402 139196416 f W95 Ext'd (LBA) /dev/sda3 13073 30402 139196416 f W95 Ext'd (LBA) /dev/sda3 13073 30403 139203193 7 HPFS/NTFS I don't know if this will help, but it's extra information, at least. Also, this is how I had my partitions: 40MB (Unallocated) 100MB (System Reserved) 60GB (Windows, C:) 40GB (Was reserved for secondary OS) ~132GB (Home, E:)

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  • At what point does the performance gap between GPU & CPU become so great that the CPU is holding back a system?

    - by Matthew Galloway
    I know that generally speaking for gaming performance the GPU is the primary factor which holds back performance, with everything else such as RAM/motherboard/PSU/CPU being secondary in importance to the graphics card. But at some point the other components ARE going to be significant in holding back the whole system! For instance nobody would be silly enough to play modern games with 512MB RAM and the very latest graphics cards (such as an HD7970) as I bet the performance increase over such a system with only 512MB but a mid range card would be non-existent! Thus it would be a "waste" for such a person to buy any high end graphics card without resolving first the system's other problems. The same point applies to other components, such as if it only had a Pentium II a current high end graphics card would be wasted on it! So my core question is how do you determine at what point for your system is spending on extra GPU power be completely "wasted"? (also, a slightly more nuanced question is trying work out at what point might the extra graphics power not be "wasted" but would be "sub optimal" value for money, when the expenditure should then be split around graphics card and other components. As obviously a gamer shouldn't always just spend on upgrading the graphics card! But needs to balance it out)

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  • Windows Small Business System 2003. SQL timeout in Server Performance Report

    - by tetranz
    I'm the volunteer IT admin at a small school. We have SBS 2003 with about ten desktops. The server performance report is emailed to me daily. It is setup with a wizard in the Monitoring and Performance part of the "Server Management" console. It often fails with a "The page cannot be displayed" error. The event log shows Event Type: Error Event Source: ServerStatusReports Event Category: None Event ID: 1 Date: 1/16/2011 Time: 6:03:14 AM User: N/A Computer: ALPHA Description: Server Status Report: URL: http://localhost/monitoring/perf.aspx?reportMode=1&allHours=1 Error Message: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. Stack Trace: at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, TdsParserState state) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, TdsParserState state) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning() at System.Data.SqlClient.TdsParser.ReadNetlib(Int32 bytesExpected) [plus lots more stack trace] This has been happening for years :) I've never really solved it. It seems to be related to WSUS. When it happens, I run the Update Services "Server Cleanup Wizard". That takes a long time to run. If I haven't run it for a while it can take 10 hours. I also run the WsusDBMaintenance.sql script (from TechNet I think) which reindexes the database etc. Those two things seem to get it working again for a while. Recently the "while" has become a couple of weeks. My searching online has revealed lots of people having this problem but no real solution. Does anyone have any good ideas about this? I have to wonder if something in the WSUS SQL schema is not indexed properly. The time that the server cleanup wizard takes seems ridiculous. Thanks

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  • Can't create system image. 0x80780119 error after upgrade from 8 to 8.1

    - by cichy202
    I have upgraded my Windows 8 PC to 8.1 yesterday and it seemed like everything is working fine until I tried to create System Image. I got an error 0x80780119 saying that there is to little space on one of the partitions. I started looking into this problem and indeed one of the partitions does not meet the requirements. There are following partitions on my drive: DISKPART> list partition Partition ### Type Size Offset ------------- ---------------- ------- ------- Partition 1 Recovery 300 MB 1024 KB Partition 2 System 100 MB 301 MB Partition 3 Reserved 128 MB 401 MB Partition 4 Primary 74 GB 529 MB Partition 5 Primary 390 GB 75 GB Partition 1 has only 13MB free space. Partition 2 has 70MB free space, partition 3 is MSFTRES, partition 4 is my C drive with around 35GB free and partition 5 is not included in system image. Partitions were create like this during installation of Windows 8 - clean install from scratch. I am using UEFI so the drive is GPT formatted. So I thought, OK I can resize my C drive a little, move the partitions and expand the 1st one. I tried using GParted but it is not able to move the MSFTRES partition. It does not recognize the file system on it. So the question is: Is it possible to "clean up" the 1st partition in anyway? If not, is there anything special about MSFTRES partition? Or can I just remove it and create it a little further and just flag it as msftres with GParted?

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  • How to avoid LinearAlloc Exceeded Capacity error android

    - by Udaykiran
    The application gets crashing every-time, when am running eclipse saying LinearAlloc exceeded capacity (5242880), last=208 This is happening, when am creating AsyncTask, thats strange this is happening everytime . when am commenting and running its running. Logcat is: 02-09 04:02:23.374: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/http/HttpEntityEnclosingRequest;' 02-09 04:02:23.374: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/commons/codec/binary/Base64;' 02-09 04:02:23.378: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/commons/codec/net/QuotedPrintableCodec;': multiple definitions 02-09 04:02:23.378: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/commons/codec/net/StringEncodings;': multiple definitions 02-09 04:02:23.378: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/commons/codec/net/URLCodec;': multiple definitions 02-09 04:02:23.394: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/commons/logging/LogFactory;' 02-09 04:02:23.397: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/commons/codec/net/URLCodec;' 02-09 04:02:23.487: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/commons/logging/impl/LogFactoryImpl;' 02-09 04:02:23.487: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/commons/logging/impl/LogFactoryImpl;': multiple definitions 02-09 04:02:23.487: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/commons/logging/impl/NoOpLog;': multiple definitions 02-09 04:02:23.487: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/commons/logging/impl/SimpleLog$1;': multiple definitions 02-09 04:02:23.487: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/commons/logging/impl/SimpleLog;': multiple definitions 02-09 04:02:23.581: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/ConnectionClosedException;': multiple definitions /http/StatusLine;': multiple definitions 02-09 04:02:23.581: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/TokenIterator;': multiple definitions 02-09 04:02:23.581: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/UnsupportedHttpVersionException;': multiple definitions 02-09 04:02:23.581: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/auth/AUTH;': multiple definitions 02-09 04:02:23.581: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/auth/AuthScheme;': multiple definitions 02-09 04:02:23.581: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/auth/AuthSchemeFactory;': multiple definitions 02-09 04:02:23.581: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/auth/AuthSchemeRegistry;': multiple definitions 02-09 04:02:23.581: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/auth/AuthScope;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/ConnectionKeepAliveStrategy;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/ConnectionPoolTimeoutException;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/EofSensorInputStream;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/HttpHostConnectException;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/ManagedClientConnection;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/MultihomePlainSocketFactory;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/OperatedClientConnection;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/params/ConnConnectionParamBean;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/params/ConnManagerParamBean;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/params/ConnPerRoute;': multiple definitions 02-09 04:02:23.589: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/conn/params/ConnManagerParams$1;': multiple definitions 02-09 04:02:23.597: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/impl/client/DefaultRequestDirector;': multiple definitions 02-09 04:02:23.597: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/impl/client/DefaultTargetAuthenticationHandler;': multiple definitions 02-09 04:02:23.597: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/impl/client/DefaultUserTokenHandler;': multiple definitions 02-09 04:02:23.597: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/impl/client/RequestWrapper;': multiple definitions 02-09 04:02:23.597: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/impl/client/EntityEnclosingRequestWrapper;': multiple definitions 02-09 04:02:23.597: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/http/client/methods/HttpRequestBase;' 02-09 04:02:23.597: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/impl/client/RedirectLocations;': multiple definitions 02-09 04:02:23.597: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/impl/client/RoutedRequest;': multiple definitions 02-09 04:02:23.597: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/impl/client/TunnelRefusedException;': multiple definitions 02-09 04:02:23.597: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/impl/conn/AbstractClientConnAdapter;': multiple definitions 02-09 04:02:23.597: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/impl/conn/AbstractPoolEntry;': multiple definitions 02-09 04:02:23.608: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/protocol/ResponseServer;': multiple definitions 02-09 04:02:23.608: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/protocol/SyncBasicHttpContext;': multiple definitions 02-09 04:02:23.608: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/protocol/UriPatternMatcher;': multiple definitions 02-09 04:02:23.608: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/util/ByteArrayBuffer;': multiple definitions 02-09 04:02:23.608: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/util/CharArrayBuffer;': multiple definitions 02-09 04:02:23.608: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/util/EncodingUtils;': multiple definitions 02-09 04:02:23.608: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/util/EntityUtils;': multiple definitions 02-09 04:02:23.608: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/util/ExceptionUtils;': multiple definitions 02-09 04:02:23.608: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/util/LangUtils;': multiple definitions 02-09 04:02:23.608: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/apache/http/util/VersionInfo;': multiple definitions 02-09 04:02:23.608: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/commons/logging/LogFactory;' 02-09 04:02:23.612: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/commons/logging/LogFactory;' 02-09 04:02:23.612: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/commons/logging/LogFactory;' 02-09 04:02:23.612: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/commons/logging/LogFactory;' 02-09 04:02:23.616: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/commons/logging/LogFactory;' 02-09 04:02:24.312: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.312: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.312: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.312: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.312: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.312: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.312: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.312: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/kxml2/io/KXmlSerializer;' 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/xmlpull/v1/XmlPullParser;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/io/KXmlParser;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/xmlpull/v1/XmlSerializer;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/io/KXmlSerializer;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/kdom/Node;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/kdom/Document;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/kdom/Element;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/wap/Wbxml;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/wap/WbxmlParser;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/wap/WbxmlSerializer;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/wap/syncml/SyncML;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/wap/wml/Wml;': multiple definitions 02-09 04:02:24.315: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/kxml2/wap/wv/WV;': multiple definitions 02-09 04:02:24.323: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/apache/commons/codec/binary/Base64;' 02-09 04:02:24.398: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParserFactory;' 02-09 04:02:24.398: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.398: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.398: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.398: I/dalvikvm(3351): DexOpt: not resolving ambiguous class 'Lorg/xmlpull/v1/XmlPullParser;' 02-09 04:02:24.495: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/xmlpull/v1/XmlPullParserException;': multiple definitions 02-09 04:02:24.495: D/dalvikvm(3351): DexOpt: not verifying 'Lorg/xmlpull/v1/XmlPullParserFactory;': multiple definitions 02-09 04:02:24.612: E/dalvikvm(3351): LinearAlloc exceeded capacity (5242880), last=208 02-09 04:02:24.612: E/dalvikvm(3351): VM aborting 02-09 04:02:24.640: D/dalvikvm(3307): GC_FOR_MALLOC freed 18195 objects / 1125640 bytes in 287ms 02-09 04:02:24.745: I/DEBUG(2372): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 02-09 04:02:24.745: I/DEBUG(2372): Build fingerprint: 'samsung/SGH-T849/SGH-T849/SGH-T849:2.2/FROYO/UVJJB:user/release-keys' 02-09 04:02:24.745: I/DEBUG(2372): pid: 3351, tid: 3351 >>> /system/bin/dexopt <<< 02-09 04:02:24.745: I/DEBUG(2372): signal 11 (SIGSEGV), fault addr deadd00d 02-09 04:02:24.745: I/DEBUG(2372): r0 00000026 r1 afd14921 r2 afd14921 r3 00000000 02-09 04:02:24.745: I/DEBUG(2372): r4 800a13f4 r5 800a13f4 r6 004fffa4 r7 000000d0 02-09 04:02:24.745: I/DEBUG(2372): r8 00000000 r9 00000000 10 00000000 fp 00000000 02-09 04:02:24.745: I/DEBUG(2372): ip deadd00d sp beade740 lr afd1596b pc 80042078 cpsr 20000030 02-09 04:02:24.745: I/DEBUG(2372): d0 643a64696f72646e d1 6472656767756265 02-09 04:02:24.745: I/DEBUG(2372): d2 410be43800000067 d3 00000000410c080a 02-09 04:02:24.745: I/DEBUG(2372): d4 6c706d49746e6569 d5 74746977744c293b 02-09 04:02:24.745: I/DEBUG(2372): d6 746e692f6a347265 d7 74682f6c616e7265 02-09 04:02:24.745: I/DEBUG(2372): d8 0000003108f12b80 d9 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d10 0000000000000000 d11 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d12 0000000000000000 d13 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d14 0000000000000000 d15 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d16 0000000000000000 d17 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d18 0000000000000000 d19 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d20 0000000000000000 d21 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d22 0000000000000000 d23 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d24 0000000000000000 d25 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d26 0000000000000000 d27 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d28 0000000000000000 d29 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): d30 0000000000000000 d31 0000000000000000 02-09 04:02:24.745: I/DEBUG(2372): scr 00000000 02-09 04:02:24.757: I/DEBUG(2372): #00 pc 00042078 /system/lib/libdvm.so 02-09 04:02:24.757: I/DEBUG(2372): #01 pc 00049f40 /system/lib/libdvm.so 02-09 04:02:24.757: I/DEBUG(2372): #02 pc 00067998 /system/lib/libdvm.so 02-09 04:02:24.757: I/DEBUG(2372): #03 pc 00067dba /system/lib/libdvm.so 02-09 04:02:24.757: I/DEBUG(2372): #04 pc 00068612 /system/lib/libdvm.so 02-09 04:02:24.757: I/DEBUG(2372): #05 pc 00068846 /system/lib/libdvm.so 02-09 04:02:24.757: I/DEBUG(2372): #06 pc 0006806a /system/lib/libdvm.so 02-09 04:02:24.757: I/DEBUG(2372): #07 pc 00057a0c /system/lib/libdvm.so 02-09 04:02:24.757: I/DEBUG(2372): #08 pc 00057fe6 /system/lib/libdvm.so 02-09 04:02:24.757: I/DEBUG(2372): #09 pc 00053d1e /system/lib/libdvm.so 02-09 04:02:24.757: I/DEBUG(2372): #10 pc 000566d4 /system/lib/libdvm.so 02-09 04:02:24.761: I/DEBUG(2372): #11 pc 000576c0 /system/lib/libdvm.so 02-09 04:02:24.761: I/DEBUG(2372): #12 pc 00057948 /system/lib/libdvm.so 02-09 04:02:24.761: I/DEBUG(2372): #13 pc 0005a1f4 /system/lib/libdvm.so 02-09 04:02:24.761: I/DEBUG(2372): #14 pc 0005a25c /system/lib/libdvm.so 02-09 04:02:24.761: I/DEBUG(2372): #15 pc 0005a32a /system/lib/libdvm.so 02-09 04:02:24.761: I/DEBUG(2372): #16 pc 000590f2 /system/lib/libdvm.so 02-09 04:02:24.761: I/DEBUG(2372): code around pc: 02-09 04:02:24.761: I/DEBUG(2372): 80042058 20061861 f7d418a2 2000eb8e ece6f7d4 02-09 04:02:24.761: I/DEBUG(2372): 80042068 58234808 b1036bdb f8df4798 2026c01c 02-09 04:02:24.761: I/DEBUG(2372): 80042078 0000f88c ed4cf7d4 0005f3a0 fffe300c 02-09 04:02:24.761: I/DEBUG(2372): 80042088 fffe6280 0000039c deadd00d f8dfb40e 02-09 04:02:24.761: I/DEBUG(2372): 80042098 b503c02c bf00490a 188ba200 f853aa03 02-09 04:02:24.761: I/DEBUG(2372): code around lr: 02-09 04:02:24.761: I/DEBUG(2372): afd15948 b5f74b0d 490da200 2600189b 585c4602 02-09 04:02:24.761: I/DEBUG(2372): afd15958 686768a5 f9b5e008 b120000c 46289201 02-09 04:02:24.761: I/DEBUG(2372): afd15968 9a014790 35544306 37fff117 6824d5f3 02-09 04:02:24.761: I/DEBUG(2372): afd15978 d1ed2c00 bdfe4630 0002c9d8 000000d8 02-09 04:02:24.761: I/DEBUG(2372): afd15988 b086b570 f602fb01 9004460c a804a901 02-09 04:02:24.761: I/DEBUG(2372): stack: 02-09 04:02:24.761: I/DEBUG(2372): beade700 410e9e18 /dev/ashmem/mspace/dalvik-heap/0 (deleted) 02-09 04:02:24.765: I/DEBUG(2372): beade704 410e9e18 /dev/ashmem/mspace/dalvik-heap/0 (deleted) 02-09 04:02:24.765: I/DEBUG(2372): beade708 afd425a0 /system/lib/libc.so 02-09 04:02:24.765: I/DEBUG(2372): beade70c afd4254c /system/lib/libc.so 02-09 04:02:24.765: I/DEBUG(2372): beade710 00000000 02-09 04:02:24.765: I/DEBUG(2372): beade714 afd1596b /system/lib/libc.so 02-09 04:02:24.765: I/DEBUG(2372): beade718 afd14921 /system/lib/libc.so 02-09 04:02:24.765: I/DEBUG(2372): beade71c afd14921 /system/lib/libc.so 02-09 04:02:24.765: I/DEBUG(2372): beade720 afd14978 /system/lib/libc.so 02-09 04:02:24.765: I/DEBUG(2372): beade724 800a13f4 /system/lib/libdvm.so 02-09 04:02:24.765: I/DEBUG(2372): beade728 800a13f4 /system/lib/libdvm.so 02-09 04:02:24.765: I/DEBUG(2372): beade72c 004fffa4 02-09 04:02:24.765: I/DEBUG(2372): beade730 000000d0 02-09 04:02:24.765: I/DEBUG(2372): beade734 afd14985 /system/lib/libc.so 02-09 04:02:24.765: I/DEBUG(2372): beade738 df002777 02-09 04:02:24.765: I/DEBUG(2372): beade73c e3a070ad 02-09 04:02:24.765: I/DEBUG(2372): #00 beade740 00016810 [heap] 02-09 04:02:24.765: I/DEBUG(2372): beade744 80049f45 /system/lib/libdvm.so 02-09 04:02:24.765: I/DEBUG(2372): #01 beade748 000000d0 02-09 04:02:24.765: I/DEBUG(2372): beade74c 000fc750 [heap] 02-09 04:02:24.765: I/DEBUG(2372): beade750 0050007c 02-09 04:02:24.765: I/DEBUG(2372): beade754 00000004 02-09 04:02:24.765: I/DEBUG(2372): beade758 00016814 [heap] 02-09 04:02:24.765: I/DEBUG(2372): beade75c afd0c9c3 /system/lib/libc.so 02-09 04:02:24.765: I/DEBUG(2372): beade760 42978eee /system/framework/core.odex 02-09 04:02:24.765: I/DEBUG(2372): beade764 42978efe /system/framework/core.odex 02-09 04:02:24.765: I/DEBUG(2372): beade768 410e9e18 /dev/ashmem/mspace/dalvik-heap/0 (deleted) 02-09 04:02:24.765: I/DEBUG(2372): beade76c 00000000 02-09 04:02:24.765: I/DEBUG(2372): beade770 00000004 02-09 04:02:24.765: I/DEBUG(2372): beade774 8006799d /system/lib/libdvm.so 02-09 04:02:25.129: I/DEBUG(2372): dumpmesg > /data/log/dumpstate_app_native.log 02-09 04:02:25.218: I/dumpstate(3355): begin 02-09 04:02:25.253: I/dalvikvm(2495): threadid=3: reacting to signal 3 02-09 04:02:25.276: I/dalvikvm(2495): Wrote stack traces to '/data/anr/traces.txt' 02-09 04:02:25.444: I/dalvikvm(2593): threadid=3: reacting to signal 3 02-09 04:02:25.452: I/dalvikvm(2593): Wrote stack traces to '/data/anr/traces.txt' 02-09 04:02:25.460: I/dalvikvm(2598): threadid=3: reacting to signal 3 02-09 04:02:25.464: I/dalvikvm(2598): Wrote stack traces to '/data/anr/traces.txt' 02-09 04:02:25.480: I/dalvikvm(2601): threadid=3: reacting to signal 3 02-09 04:02:25.487: I/dalvikvm(2601): Wrote stack traces to '/data/anr/traces.txt' 02-09 04:02:25.503: I/dalvikvm(2655): threadid=3: reacting to signal 3 02-09 04:02:25.526: I/dalvikvm(2655): Wrote stack traces to '/data/anr/traces.txt' 02-09 04:02:25.703: I/dalvikvm(2676): threadid=3: reacting to signal 3 02-09 04:02:25.851: I/dalvikvm(2708): threadid=3: reacting to signal 3 02-09 04:02:25.855: I/dalvikvm(2676): Wrote stack traces to '/data/anr/traces.txt' 02-09 04:02:25.866: I/dalvikvm(2746): threadid=3: reacting to signal 3 02-09 04:02:25.886: I/dalvikvm(2746): Wrote stack traces to '/data/anr/traces.txt' 02-09 04:02:25.901: I/dalvikvm(2753): threadid=3: reacting to signal 3 02-09 04:02:25.905: I/dalvikvm(2753): Wrote stack traces to '/data/anr/traces.txt' 02-09 04:02:26.097: I/dalvikvm(2795): threadid=3: reacting to signal 3 02-09 04:02:26.315: I/dalvikvm(2850): threadid=3: reacting to signal 3 am using jaxab-xalan-1.5 jar in referenced libraries. How to avoid this Linearalloc exceeded capacity error ? Thanks

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  • How do I convert this Crystal Report IF statement for use in a WHERE clause in Reporting Services?

    - by Spacehamster
    I'm trying to translate this Crystal Reports IF Statement for use in a WHERE clause - {@receipt_datetime_daylight} in {?DateRange} and (if {?Call Sign} = "All Call Signs" Then {cacs_incident_task.resource_or_class_id} = {cacs_incident_task.resource_or_class_id} Else If {?Call Sign} = "All Sierra Call Signs" Then {cacs_incident_task.resource_or_class_id} in ["S10", "S11", "S12"] Else If {?Call Sign} = "All Whiskey Call Signs" Then {cacs_incident_task.resource_or_class_id} in ["W01", "W02", "W03"] Else {cacs_incident_task.resource_or_class_id} = {?Call Sign}) and (if {?OffenceType} = "All Offences" Then {cacs_inc_type.description} = {cacs_inc_type.description} else {cacs_inc_type.description} = {?OffenceType}) CASE statements don't work in Reporting Services, so I need to find a why of translating this into a WHERE clause. Does anyone know a way?

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  • C# Item system design approach, should I use abstract classes, interfaces or virutals?

    - by vexe
    I'm working on a Resident Evil 1/2/3/0/Remake type of game. Currently I've done a big part of the inventory system (here's a link if you wanna see my inventory, pretty outdated, added a lot of features and made a lot of enhancements) Now I'm thinking about how to approach the items system, If you've played any Resident Evil game or any of its likes you should be familiar with what I'm trying to achieve. Here's a very simple category I made for the items: So you have different items, with different operations you could perform on them, there are usable items that you could use, like for example herbs and first aid kits that 'using' them would affect your health, keys to unlock doors, and equipable items that you could 'equip' like weapons. Also, you can 'combine' two items together to get new one, like for example mixing a green and red herb would give you a new type of herb, or combining a lighter with a paper, would give you a burnt paper, or ammo with a gun, would reload the gun or something. etc. You know the usual RE drill. Not all items are 'transformable', in that, for example: lighter + paper = burnt paper (it's the paper that 'transforms' to burnt paper and not the lighter, the lighter is not transformable it will remain as it is) green herb + red herb = newHerb1 (both herbs will vanish and transform to this new type of herb) ammo + gun = reload gun (ammo state will remain as it is, it won't change but it will just decrease, nothing will happen to the gun it just gets reloaded) Also a key note to remember is that you can't just combine items randomly, each item has a 'mating' item(s). So to sum up, different items, and different operations on them. The question is, how to approach this, design-wise? I've been learning about interfaces, but it just doesn't quite get into my head, I mean, why not just use classes with the good old inheritance? I know the technical details of interfaces and that the cool thing about them is that they don't require an inheritance chain, but I just can't see how to use them properly, that is, if they were the right thing to use here. So should I go with just classes and inheritance? just like in the tree I showed you? or should I think more about how to use interfaces? (IUsable, IEquipable, ITransformable) - why not just use classes UsableItem, Equipable item, TransformableItem? I want something that won't give me headaches in the long run, something resilient/flexible to future changes. I'm OK using classes, but I smell something better here. The way I'm thinking is to possibly use both inheritance and interfaces, so that you have a branch like this: item - equipable - weapon. but then again, the weapon has methods like 'reload' 'examine' 'equip' some of them 'combine' so I'm thinking to make weapon implement ICombinable?... not all items get used the same way, using herbs will increase your health, using a key will open a door, so IUsable maybe? Should I use a big database (XML for example) for all the items, items names, mates, nRowsReq, nColsReq, etc? Thanks so much for your answers in advanced, note that demo 3 is coming after I'm done with items :D

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  • Proxied calls not working as expected

    - by AndyH
    I have been modifying an application to have a cleaner client/server split to allow for load splitting and resource sharing etc. Everything is written to an interface so it was easy to add a remoting layer to the interface using a proxy. Everything worked fine. The next phase was to add a caching layer to the interface and again this worked fine and speed was improved but not as much as I would have expected. On inspection it became very clear what was going on. I feel sure that this behavior has been seen many times before and there is probably a design pattern to solve the problem but it eludes me and I'm not even sure how to describe it. It is easiest explained with an example. Let's imagine the interface is interface IMyCode { List<IThing> getLots( List<String> ); IThing getOne( String id ); } The getLots() method calls getOne() and fills up the list before returning. The interface is implemented at the client which is proxied to a remoting client which then calls the remoting server which in turn calls the implementation at the server. At the client and the server layers there is also a cache. So we have :- Client interface | Client cache | Remote client | Remote server | Server cache | Server interface If we call getOne("A") at the client interface, the call is passed to the client cache which faults. This then calls the remote client which passes the call to the remote server. This then calls the server cache which also faults and so the call is eventually passed to the server interface which actually gets the IThing. In turn the server cache is filled and finally the client cache also. If getOne("A") is again called at the client interface the client cache has the data and it gets returned immediately. If a second client called getOne("B") it would fill the server cache with "B" as well as it's own client cache. Then, when the first client calls getOne("B") the client cache faults but the server cache has the data. This is all as one would expect and works well. Now lets call getLots( [ "C", "D" ] ). This works as you would expect by calling getOne() twice but there is a subtlety here. The call to getLots() cannot directly make use of the cache. Therefore the sequence is to call the client interface which in turn calls the remote client, then the remote server and eventually the server interface. This then calls getOne() to fill the list before returning. The problem is that the getOne() calls are being satisfied at the server when ideally they should be satisfied at the client. If you imagine that the client/server link is really slow then it becomes clear why the client call is more efficient than the server call once the client cache has the data. This example is contrived to illustrate the point. The more general problem is that you cannot just keep adding proxied layers to an interface and expect it to work as you would imagine. As soon as the call goes 'through' the proxy any subsequent calls are on the proxied side rather than 'self' side. Have I failed to learn or not learned something correctly? All this is implemented in Java and I haven't used EJBs. It seems that the example may be confusing. The problem is nothing to do with cache efficiencies. It is more to do with an illusion created by the use of proxies or AOP techniques in general. When you have an object whose class implements an interface there is an assumption that a call on that object might make further calls on that same object. For example, public String getInternalString() { return InetAddress.getLocalHost().toString(); } public String getString() { return getInternalString(); } If you get an object and call getString() the result depends where the code is running. If you add a remoting proxy to the class then the result could be different for calls to getString() and getInternalString() on the same object. This is because the initial call gets 'deproxied' before the actual method is called. I find this not only confusing but I wonder how I can control this behavior especially as the use of the proxy may be by a third party. The concept is fine but the practice is certainly not what I expected. Have I missed the point somewhere?

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