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• Cannot get assembly version for footer

  - by Jaxidian

  I'm using the automatic build versioning mentioned in this question (not the selected answer but the answer that uses the [assembly: AssemblyVersion("1.0.*")] technique). I'm doing this in the footer of my Site.Master file in MVC 2. My code for doing this is as follows: <div id="footer"> <a href="emailto:[email protected]">[email protected]</a> - Copyright © 2005-<%= DateTime.Today.Year.ToString() %>, foo LLC. All Rights Reserved. - Version: <%= Assembly.GetEntryAssembly().GetName().Version.ToString() %> </div> The exception I get is a Object reference not set to an instance of an object because GetEntryAssembly() returns NULL. My other options don't work either. GetCallingAssembly() always returns "4.0.0.0" and GetExecutingAssembly() always returns "0.0.0.0". When I go look at my DLLs, everything is versioning as I would expect. But I cannot figure out how to access it to display in my footer!!

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• Hibernate: how to call a stored function returning a varchar?

  - by Péter Török

  I am trying to call a legacy stored function in an Oracle9i DB from Java using Hibernate. The function is declared like this: create or replace FUNCTION Transferlocation_Fix (mnemonic_code IN VARCHAR2) RETURN VARCHAR2 After several failed tries and extensive googling, I found this thread on the Hibernate forums which suggested a mapping like this: <sql-query name="TransferLocationFix" callable="true"> <return-scalar column="retVal" type="string"/> select Transferlocation_Fix(:mnemonic) as retVal from dual </sql-query> My code to execute it is Query query = session.getNamedQuery("TransferLocationFix"); query.setParameter("mnemonic", "FC3"); String result = (String) query.uniqueResult(); and the resulting log is DEBUG (org.hibernate.jdbc.AbstractBatcher:366) - - about to open PreparedStatement (open PreparedStatements: 0, globally: 0) DEBUG (org.hibernate.SQL:401) - - select Transferlocation_Fix(?) as retVal from dual TRACE (org.hibernate.jdbc.AbstractBatcher:484) - - preparing statement TRACE (org.hibernate.type.StringType:133) - - binding 'FC3' to parameter: 2 TRACE (org.hibernate.type.StringType:133) - - binding 'FC3' to parameter: 2 java.lang.NullPointerException at oracle.jdbc.ttc7.TTCAdapter.newTTCType(TTCAdapter.java:300) at oracle.jdbc.ttc7.TTCAdapter.createNonPlsqlTTCColumnArray(TTCAdapter.java:270) at oracle.jdbc.ttc7.TTCAdapter.createNonPlsqlTTCDataSet(TTCAdapter.java:231) at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1924) at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteDescribe(TTC7Protocol.java:850) at oracle.jdbc.driver.OracleStatement.doExecuteQuery(OracleStatement.java:2599) at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2963) at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:658) at oracle.jdbc.driver.OraclePreparedStatement.execute(OraclePreparedStatement.java:736) at com.mchange.v2.c3p0.impl.NewProxyCallableStatement.execute(NewProxyCallableStatement.java:3044) at org.hibernate.dialect.Oracle8iDialect.getResultSet(Oracle8iDialect.java:379) at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:193) at org.hibernate.loader.Loader.getResultSet(Loader.java:1784) at org.hibernate.loader.Loader.doQuery(Loader.java:674) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236) at org.hibernate.loader.Loader.doList(Loader.java:2220) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104) at org.hibernate.loader.Loader.list(Loader.java:2099) at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:289) at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1695) at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:142) at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:152) at org.hibernate.impl.AbstractQueryImpl.uniqueResult(AbstractQueryImpl.java:811) at com.my.project.SomeClass.method(SomeClass.java:202) ... Any clues what am I doing wrong? Or any better ways to call this stored function?

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• Integrating Dynamics CMS with Sharepoint ASCX SecurityException Issue

  - by Gavin

  Hi, I've an ASCX control (WebParts aren't used in this solution) which interrogates CMS 4's data via the API provided by Microsoft.Crm.Sdk and Microsoft.Crm.SdkTypeProxy. The solution works until it's deployed to Sharepoint. Initially I received the following error: [SecurityException: That assembly does not allow partially trusted callers.] MyApp.SharePoint.Web.Applications.MyAppUtilities.RefreshUserFromCrm(String login) +0 MyApp.SharePoint.Web.Applications.MyApp_LoginForm.btnLogin_Click(Object sender, EventArgs e) +30 System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111 Then I tried wrapping the calling code in the ASCX with SPSecurity.RunWithElevatedPrivileges: SPSecurity.RunWithElevatedPrivileges(delegate() { // FBA user may not exist yet or require refreshing MyAppUtilities.RefreshUserFromCrm(txtUser.Text); }); But this resulted in the following error: [SecurityException: Request for the permission of type 'Microsoft.SharePoint.Security.SharePointPermission, Microsoft.SharePoint.Security, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' failed.] MyApp.SharePoint.Web.Applications.MyApp_LoginForm.btnLogin_Click(Object sender, EventArgs e) +0 System.Web.UI.WebControls.Button.OnClick(EventArgs e) +111 When I elevate the trust level in the Sharepoint site to full everything works fine, however I need to come up with a solution that uses minimal trust (or a customised minimal trust). I'm also trying to stay clear of adding anything to the GAC. Any ideas? I assume the issue is occuring when trying to call functionality from Microsoft.Crm.* Thanks in advance for any help anyone can provide. Cheers, Gavin

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• Castle Windsor using wrong component to satisfy a dependency

  - by Neil Barnwell

  I have the following component mapping in Windsor xml: <component id="dataSession.DbConnection" service="System.Data.IDbConnection, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" type="System.Data.SqlClient.SqlConnection, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" lifestyle="custom" customLifestyleType="MyCompany.Castle.PerOperationLifestyle.PerOperationLifestyleManager, MyCompany.Castle"> <parameters> <connectionString>server=(local);database=MyCompany;trusted_connection=true;application name=OperationScopeTest;</connectionString> </parameters> </component> <component id="dataSession.DataContext" service="System.Data.Linq.DataContext, System.Data.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" type="MyCompany.BusinessLogic.MyCompanyDataContext, MyCompany.BusinessLogic" lifestyle="custom" customLifestyleType="MyCompany.Castle.PerOperationLifestyle.PerOperationLifestyleManager, MyCompany.Castle"> <parameters> <connection>${dataSession.DbConnection}</connection> </parameters> </component> However, when I ask the container for a DataContext, it actually uses the constructor requiring a connection string, despite the ${dataSession.DbConnection} being an IDbConnection. Why is this, and how to I make Windsor use the correct constructor?

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• Delegates in .NET: how are they constructed ?

  - by Saulius

  While inspecting delegates in C# and .NET in general, I noticed some interesting facts: Creating a delegate in C# creates a class derived from MulticastDelegate with a constructor: .method public hidebysig specialname rtspecialname instance void .ctor(object 'object', native int 'method') runtime managed { } Meaning that it expects the instance and a pointer to the method. Yet the syntax of constructing a delegate in C# suggests that it has a constructor new MyDelegate(int () target) where I can recognise int () as a function instance (int *target() would be a function pointer in C++). So obviously the C# compiler picks out the correct method from the method group defined by the function name and constructs the delegate. So the first question would be, where does the C# compiler (or Visual Studio, to be precise) pick this constructor signature from ? I did not notice any special attributes or something that would make a distinction. Is this some sort of compiler/visualstudio magic ? If not, is the T (args) target construction valid in C# ? I did not manage to get anything with it to compile, e.g.: int () target = MyMethod; is invalid, so is doing anything with MyMetod, e.g. calling .ToString() on it (well this does make some sense, since that is technically a method group, but I imagine it should be possible to explicitly pick out a method by casting, e.g. (int())MyFunction. So is all of this purely compiler magic ? Looking at the construction through reflector reveals yet another syntax: Func CS$1$0000 = new Func(null, (IntPtr) Foo); This is consistent with the disassembled constructor signature, yet this does not compile! One final interesting note is that the classes Delegate and MulticastDelegate have yet another sets of constructors: .method family hidebysig specialname rtspecialname instance void .ctor(class System.Type target, string 'method') cil managed Where does the transition from an instance and method pointer to a type and a string method name occur ? Can this be explained by the runtime managed keywords in the custom delegate constructor signature, i.e. does the runtime do it's job here ?

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• File extensions and MIME Types in .NET

  - by Marc Climent

  I want to get a MIME Content-Type from a given extension (preferably without accessing the physical file). I have seen some questions about this and the methods described to perform this can be resumed in: Use registry information. Use urlmon.dll's FindMimeFromData. Use IIS information. Roll your own MIME mapping function. Based on this table, for example. I've been using no.1 for some time but I realized that the information provided by the registry is not consistent and depends on the software installed on the machine. Some extensions, like .zip don't use to have a Content-Type specified. Solution no.2 forces me to have the file on disk in order to read the first bytes, which is something slow but may get good results. The third method is based on Directory Services and all that stuff, which is something I don't like much because I have to add COM references and I'm not sure it's consistent between IIS6 and IIS7. Also, I don't know the performance of this method. Finally, I didn't want to use my own table but at the end seems the best option if I want a decent performance and consistency of the results between platforms (even Mono). Do you think there's a better option than using my own table or one of other described methods are better? What's your experience?

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• MS Ajax FilteredTextBox stopped working

  - by TenaciousImpy

  Hi, I'm using Microsoft's AJAX library via their CDN. Everything was going fine in an old project. I then created a new project and copied and pasted some of the AJAX code hoping that it would work. However, my code isn't working and I've been struggling to figure out why. I'm trying to implement a filtered textbox: <script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.js" type="text/javascript"></script> <script src="http://ajax.microsoft.com/ajax/beta/0911/Start.debug.js" type="text/javascript"></script> <script src="http://ajax.microsoft.com/ajax/beta/0911/extended/ExtendedControls.debug.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function() { Sys.require(Sys.components.filteredTextBox, function() { $("[id$='UserName']").filteredTextBox({ InvalidChars: ".", FilterType: Sys.Extended.UI.FilterTypes.Numbers | Sys.Extended.UI.FilterTypes.UppercaseLetters | Sys.Extended.UI.FilterTypes.LowercaseLetters | Sys.Extended.UI.FilterTypes.Custom, FilterMode: Sys.Extended.UI.FilterModes.ValidChars }); }); }); </script> When I run this, the textbox isn't filtered and I can enter any character. In Chrome, I used the Dev Tools and it found two errors on the page. In my .aspx page, I have: Uncaught TypeError: Cannot read property 'Numbers' of undefined (regarding the Sys.Extended.UI.FilterTypes.Numbers in the code above). In filteredtextboxbehavior.debug.js, I have the error: Uncaught TypeError: Object #<an Object> has no method 'registerComponent' Any ideas why I'm getting this error? The code has been working previously so I'm not sure if I had added any extra settings in my old project which the new one doesn't have. Thanks! ps:The textbox can be found as any other actions on it are recognized.

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• Milliseconds in DateTime.Now on .NET Compact Framework always zero? [SOLVED]

  - by Marcel

  Hi all, i want to have a time stamp for logs on a Windows Mobile project. The accuracy must be in the range a hundred milliseconds at least. However my call to DateTime.Now returns a DateTime object with the Millisecond property set to zero. Also the Ticks property is rounded accordingly. How to get better time accuracy? Remember, that my code runs on on the Compact Framework, version 3.5. I use a HTC touch Pro 2 device. Based on the answer from MusiGenesis i have created the following class which solved this problem: /// <summary> /// A more precisely implementation of some DateTime properties on mobile devices. /// </summary> /// <devdoc>Tested on a HTC Touch Pro2.</devdoc> public static class DateTimePrecisely { /// <summary> /// Remembers the start time when this model was created. /// </summary> private static DateTime _start = DateTime.Now; /// <summary> /// Remembers the system uptime ticks when this model was created. This /// serves as a more precise time provider as DateTime.Now can do. /// </summary> private static int _startTick = Environment.TickCount; /// <summary> /// Gets a DateTime object that is set exactly to the current date and time on this computer, expressed as the local time. /// </summary> /// <returns></returns> public static DateTime Now { get { return _start.AddMilliseconds(Environment.TickCount - _startTick); } } }

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• WCF: Serializing and Deserializing generic collections

  - by Fabiano

  I have a class Team that holds a generic list: [DataContract(Name = "TeamDTO", IsReference = true)] public class Team { [DataMember] private IList<Person> members = new List<Person>(); public Team() { Init(); } private void Init() { members = new List<Person>(); } [System.Runtime.Serialization.OnDeserializing] protected void OnDeserializing(StreamingContext ctx) { Log("OnDeserializing of Team called"); Init(); if (members != null) Log(members.ToString()); } [System.Runtime.Serialization.OnSerializing] private void OnSerializing(StreamingContext ctx) { Log("OnSerializing of Team called"); if (members != null) Log(members.ToString()); } [System.Runtime.Serialization.OnDeserialized] protected void OnDeserialized(StreamingContext ctx) { Log("OnDeserialized of Team called"); if (members != null) Log(members.ToString()); } [System.Runtime.Serialization.OnSerialized] private void OnSerialized(StreamingContext ctx) { Log("OnSerialized of Team called"); Log(members.ToString()); } When I use this class in a WCF service, I get following log output OnSerializing of Team called System.Collections.Generic.List 1[Person] OnSerialized of Team called System.Collections.Generic.List 1[Person] OnDeserializing of Team called System.Collections.Generic.List 1[ENetLogic.ENetPerson.Model.FirstPartyPerson] OnDeserialized of Team called ENetLogic.ENetPerson.Model.Person[] After the deserialization members is an Array and no longer a generic list although the field type is IList< (?!) When I try to send this object back over the WCF service I get the log output OnSerializing of Team called ENetLogic.ENetPerson.Model.FirstPartyPerson[] After this my unit test crashes with a System.ExecutionEngineException, which means the WCF service is not able to serialize the array. (maybe because it expected a IList<) So, my question is: Does anybody know why the type of my IList< is an array after deserializing and why I can't serialize my Team object any longer after that? Thanks

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• Accessing an enum stored in a QVariant

  - by Henry Thacker

  Hi, I have registered an enumeration type "ClefType" within my header file - this enum is registered with the MetaObject system using the Q_DECLARE_METATYPE and Q_ENUMS macros. qRegisterMetaType is also called in the class constructor. This allows me to use this type in a Q_PROPERTY, this all works fine. However, later on, I need to be able to get hold of the Q_PROPERTY of this enum type, given the object - in a form that is suitable for serialization. Ideally, it would be useful to store the integer value for that enum member, because I don't want this to be specific to the type of enum that is used - eventually I want to have several different enums. // This is inside a loop over all the properties on a given object QMetaProperty property = metaObject->property(propertyId); QString propertyName = propertyMeta.name(); QVariant variantValue = propertyMeta.read(serializeObject); // If, internally, this QVariant is of type 'ClefType', // how do I pull out the integer value for this enum? Unfortunately variantValue.toInt(); does not work - custom enums don't seem to be directly 'castable' to an integer value. Thanks in advance, Henry

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• Castle Windsor upgrade causes TypeLoadException for generic types

  - by Neil Barnwell

  I have the following mapping in my Castle Windsor xml file which has worked okay (unchanged) for some time: <component id="defaultBasicRepository" service="MyApp.Models.Repositories.IBasicRepository`1, MyApp.Models" type="MyApp.Models.Repositories.Linq.BasicRepository`1, MyApp.Models" lifestyle="perWebRequest"/> I got this from the Windsor documentation at http://www.castleproject.org/container/documentation/v1rc3/usersguide/genericssupport.html. Since I upgraded Windsor, I now get the following exception at runtime: Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.TypeLoadException: GenericArguments[0], 'T', on 'MyApp.Models.Repositories.Linq.BasicRepository`1[TEntity]' violates the constraint of type parameter 'TEntity'. Source Error: Line 44: public static void ConfigureIoC() Line 45: { Line 46: var windsor = new WindsorContainer("Windsor.xml"); Line 47: Line 48: ServiceLocator.SetLocatorProvider(() = new WindsorServiceLocator(windsor)); I'm using ASP.NET MVC 1.0, Visual Studio 2008 and Castle Windsor as downloaded from http://sourceforge.net/projects/castleproject/files/InversionOfControl/2.1/Castle-Windsor-2.1.1.zip/download Can anyone shed any light on this? I'm sure the upgrade of Castle Windsor is what caused it - it's been working well for ages.

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• AutoMapper a viable alternative to two way databinding using a FormView?

  - by tbone

  I've started using the FormView control to enable two way databinding in asp.net webforms. I liked that it saved me the trouble of writing loadForm and unloadForm routines on every page. So it seemed to work nicely at the start when I was just using textboxes everywhere....but when it came time to start converting some to DropDownLists, all hell broke lose. For example, see: http://stackoverflow.com/questions/2435185/not-possible-to-load-dropdownlist-on-formview-from-code-behind ....and I had many additional problems after that. So I happened upon an article on AutoMapper, which I know very little about yet, but from the sounds of it, this might be a viable alternative to two-way databinding a form to an domain entity object? From what I understand, AutoMapper basically operates on naming convention, so, it will look for matched names properties(?) on the source and destination objects. So, basically, I have all my domain entities (ie: Person) with properties (FirstName, LastName, Address, etc)....what I would like to be able to do is declare my asp controls with those exact same names, and have automapper do the loading and unloading. One obvious caveat is that AutoMapper would have to know the proper property name for each control type, ie: Person.FirstName -- form.FirstName*.Text* Person.Country -- form.Country.SelectedValue Person.IsVerified -- form.IsVerified.Checked ....so it would have to have the smarts to find the control on the form, determine its type, and then load/unload between the domain object and the webform control into the proper property of the control. So if this worked, a person could just get rid of the cursed FormView control entirely, and it would be just one line of code each for binding and unbinding a webform. Possible?

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• What is the recommended coding style for PowerShell?

  - by stej

  Is there any recommended coding style how to write PowerShell scripts? It's not about how to structure the code (how many functions, if to use module, ...). It's about 'how to write the code so that it is readable'. In programming languages there are some recommended coding styles (what to indent, how to indent - spaces/tabs, where to make new line, where to put braces,...), but I haven't seen any suggestion for PowerShell. What I'm interested particularly in: How to write parameters function New-XYZItem ( [string] $ItemName , [scriptblock] $definition ) { ... (I see that it's more like 'V1' syntax) or function New-PSClass { param([string] $ClassName ,[scriptblock] $definition )... or (why to add empty attribute?) function New-PSClass { param([Parameter()][string] $ClassName ,[Parameter()][scriptblock] $definition )... or (other formatting I saw maybe in Jaykul's code) function New-PSClass { param( [Parameter()] [string] $ClassName , [Parameter()] [scriptblock] $definition )... or ..? How to write complex pipeline Get-SomeData -param1 abc -param2 xyz | % { $temp1 = $_ 1..100 | % { Process-somehow $temp1 $_ } } | % { Process-Again $_ } | Sort-Object -desc or (name of cmdlet on new line) Get-SomeData -param1 abc -param2 xyz | % { $temp1 = $_ 1..100 | % { Process-somehow $temp1 $_ } } | % { Process-Again $_ } | Sort-Object -desc | and what if there are -begin -process -end params? how to make it the most readable? Get-SomeData -param1 abc -param2 xyz | % -begin { init } -process { Process-somehow2 ... } -end { Process-somehow3 ... } | % -begin { } .... or Get-SomeData -param1 abc -param2 xyz | % ` -begin { init } ` -process { Process-somehow2 ... } ` -end { Process-somehow3 ... } | % -begin { } .... the indentitation is important here and what element is put on new line as well. I have covered only questions that come on my mind very frequently. There are some others, but I'd like to keep this SO question 'short'. Any other suggestions are welcome.

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• Setting httponly in JSESSIONID cookie (Java EE 5)

  - by mythandros

  I'm trying to set the httponly flag on the JSESSIONID cookie. I'm working in Java EE 5, however, and can't use setHttpOnly(). First I tried to create my own JSESSIONID cookie from within the servlet's doPost() by using response.setHeader(). When that didn't work, I tried response.addHeader(). That didn't work either. Then, I learned that the servlet handled converting the session into a JSESSIONID cookie and inserting it into the http header so if I want to play with that cookie, I'll have to write a filter. I wrote a filter and played with setHeader()/addHeader() there, again to no avail. Then, I learned that there's some flush/close action going on in the response object before it gets to the filter so if I want to manipulate the data, I need to extend HttpServletResponseWrapper and pass that to filterChain.doFilter(). This is done but I'm still not getting results. Clearly I'm doing something wrong but I don't know what. I'm not sure if this is at all relevant to the question at hand but no html document is being returned by the servlet to the browser. All that's really happening is that some objects are being populated and returned to a JSP document. I've sort of assumed that The Session object is turned into a JSESSIONID cookie and wrapped -- along with the objects added to the request -- in an http header before being sent to the browser. I'd be happy to post some code but I want to rule out the possibility that my difficulties stem from a misunderstanding of the theory first.

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• Default class for SQLAlchemy single table inheritance

  - by eclaird

  I've set up a single table inheritance, but I need a "default" class to use when an unknown polymorphic identity is encountered. The database is not in my control and so the data can be pretty much anything. A working example setup: import sqlalchemy as sa from sqlalchemy import orm engine = sa.create_engine('sqlite://') metadata = sa.MetaData(bind=engine) table = sa.Table('example_types', metadata, sa.Column('id', sa.Integer, primary_key=True), sa.Column('type', sa.Integer), ) metadata.create_all() class BaseType(object): pass class TypeA(BaseType): pass class TypeB(BaseType): pass base_mapper = orm.mapper(BaseType, table, polymorphic_on=table.c.type, polymorphic_identity=None, ) orm.mapper(TypeA, inherits=base_mapper, polymorphic_identity='A', ) orm.mapper(TypeB, inherits=base_mapper, polymorphic_identity='B', ) Session = orm.sessionmaker(autocommit=False, autoflush=False) session = Session() Now, if I insert a new unmapped identity... engine.execute('INSERT INTO EXAMPLE_TYPES (TYPE) VALUES (\'C\')') session.query(BaseType).first() ...things break. Traceback (most recent call last): File "<stdin>", line 1, in <module> File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/query.py", line 1619, in first ret = list(self[0:1]) File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/query.py", line 1528, in __getitem__ return list(res) File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/query.py", line 1797, in instances rows = [process[0](row, None) for row in fetch] File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/mapper.py", line 2179, in _instance _instance = polymorphic_instances[discriminator] File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/util.py", line 83, in __missing__ self[key] = val = self.creator(key) File ".../SQLAlchemy-0.6.5-py2.6.egg/sqlalchemy/orm/mapper.py", line 2341, in configure_subclass_mapper discriminator) AssertionError: No such polymorphic_identity u'C' is defined What I expected: >>> result = session.query(BaseType).first() >>> result <BaseType object at 0x1c8db70> >>> result.type u'C' I think this used to work with some older version of SQLAlchemy, but I haven't been keeping up with the development lately. Any pointers on how to accomplish this?

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• spring 3 AOP anotated advises

  - by Art79

  Trying to figure out how to Proxy my beans with AOP advices in annotated way. I have a simple class @Service public class RestSampleDao { @MonitorTimer public Collection<User> getUsers(){ .... return users; } } i have created custom annotation for monitoring execution time @Target({ ElementType.METHOD, ElementType.TYPE }) @Retention(RetentionPolicy.RUNTIME) public @interface MonitorTimer { } and advise to do some fake monitoring public class MonitorTimerAdvice implements MethodInterceptor { public Object invoke(MethodInvocation invocation) throws Throwable{ try { long start = System.currentTimeMillis(); Object retVal = invocation.proceed(); long end = System.currentTimeMillis(); long differenceMs = end - start; System.out.println("\ncall took " + differenceMs + " ms "); return retVal; } catch(Throwable t){ System.out.println("\nerror occured"); throw t; } } } now i can use it if i manually proxy the instance of dao like this AnnotationMatchingPointcut pc = new AnnotationMatchingPointcut(null, MonitorTimer.class); Advisor advisor = new DefaultPointcutAdvisor(pc, new MonitorTimerAdvice()); ProxyFactory pf = new ProxyFactory(); pf.setTarget( sampleDao ); pf.addAdvisor(advisor); RestSampleDao proxy = (RestSampleDao) pf.getProxy(); mv.addObject( proxy.getUsers() ); but how do i set it up in Spring so that my custom annotated methods would get proxied by this interceptor automatically? i would like to inject proxied samepleDao instead of real one. Can that be done without xml configurations? i think should be possible to just annotate methods i want to intercept and spring DI would proxy what is necessary. or do i have to use aspectj for that? would prefere simplest solution :- ) thanks a lot for help!

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• issue in ObservableCollection

  - by prince23

  hi, i have an lsit with these data i have a class called information.cs with these properties name,school, parent ex data name school parent kumar fes All manju fes kumar anu frank kumar anitha jss All rohit frank manju anill vijaya manju vani jss kumar soumya jss kumar madhu jss rohit shiva jss rohit vanitha jss anitha anu jss anitha now taking this as an input i wanted the output to be formated with a Hierarchical data when parent is all means it is the topmost level kumar fes All. what i need to do here is i need to create an object[0] and then check in list whether kumar exists as a parent in the list if it exista then add those items as under the object[0] as a parent i need to create one more oject under **manju fes kumar anu frank kumar** if you see this class file its shows how data is formatted. public class SampleProjectData { public static ObservableCollection GetSampleData() { DateTime dtS = DateTime.Now; ObservableCollection<Product> teams = new ObservableCollection<Product>(); teams.Add(new Product() { PDName = "Product1", OverallStartTime = dtS, OverallEndTime = dtS + TimeSpan.FromDays(3), }); Project emp = new Project() { PName = "Project1", OverallStartTime = dtS + TimeSpan.FromDays(1), OverallEndTime = dtS + TimeSpan.FromDays(6) }; emp.Tasks.Add(new Task() { StartTime = dtS, EndTime = dtS + TimeSpan.FromDays(2), TaskName = "John's Task 3" }); emp.Tasks.Add(new Task() { StartTime = dtS + TimeSpan.FromDays(3), EndTime = dtS + TimeSpan.FromDays(4), TaskName = "John's Task 2" }); teams[0].Projects.Add(emp); } return teams; }

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• How to implement Priority Queues in Python?

  - by dragosrsupercool

  Sorry for such a silly question but Python docs are confusing.. . Link 1: Queue Implementation http://docs.python.org/library/queue.html It says thats Queue has a contruct for priority queue. But I could not find how to implement it. class Queue.PriorityQueue(maxsize=0) Link 2: Heap Implementation http://docs.python.org/library/heapq.html Here they says that we can implement priority queues indirectly using heapq pq = [] # list of entries arranged in a heap entry_finder = {} # mapping of tasks to entries REMOVED = '<removed-task>' # placeholder for a removed task counter = itertools.count() # unique sequence count def add_task(task, priority=0): 'Add a new task or update the priority of an existing task' if task in entry_finder: remove_task(task) count = next(counter) entry = [priority, count, task] entry_finder[task] = entry heappush(pq, entry) def remove_task(task): 'Mark an existing task as REMOVED. Raise KeyError if not found.' entry = entry_finder.pop(task) entry[-1] = REMOVED def pop_task(): 'Remove and return the lowest priority task. Raise KeyError if empty.' while pq: priority, count, task = heappop(pq) if task is not REMOVED: del entry_finder[task] return task raise KeyError('pop from an empty priority queue' Which is the most efficient priority queue implementation in python? And how to implement it?

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• Why is my mssql query failing?

  - by Eric Reynolds

  connect(); $arr = mssql_fetch_assoc(mssql_query("SELECT Applications.ProductName, Applications.ProductVersion, Applications.ProductSize, Applications.Description, Applications.ProductKey, Applications.ProductKeyID, Applications.AutomatedInstaller, Applications.AutomatedInstallerName, Applications.ISO, Applications.ISOName, Applications.Internet, Applications.InternetURL, Applications.DatePublished, Applications.LicenseID, Applications.InstallationGuide, Vendors.VendorName FROM Applications INNER JOIN Vendors ON Applications.VendorID = Vendors.VendorID WHERE ApplicationID = ".$ApplicationID)); $query1 = mssql_query("SELECT Issues.AppID, Issues.KnownIssues FROM Issues WHERE Issues.AppID=".$ApplicationID); $issues = mssql_fetch_assoc($query1); $query2 = mssql_query("SELECT ApplicationInfo.AppID, ApplicationInfo.Support_Status, ApplicationInfo.UD_Training, ApplicationInfo.AtomicTraining, ApplicationInfo.VendorURL FROM software.software_dbo.ApplicationInfo WHERE ApplicationInfo.AppID = ".$ApplicationID); $row = mssql_fetch_assoc($query2); function connect(){ $connect = mssql_connect(DBSERVER, DBO, DBPW) or die("Unable to connect to server"); $selected = mssql_select_db(DBNAME, $connect) or die("Unable to connect to database"); return $connect; } Above is the code. The first query/fetch_assoc works perfectly fine, however the next 2 queries fail and I cannot figure out why. Here is the error statement that shows up from php: Warning: mssql_query() [function.mssql-query]: message: Invalid object name 'Issues'. (severity 16) in /srv/www/htdocs/agreement.php on line 47 Warning: mssql_query() [function.mssql-query]: General SQL Server error: Check messages from the SQL Server (severity 16) in /srv/www/htdocs/agreement.php on line 47 Warning: mssql_query() [function.mssql-query]: Query failed in /srv/www/htdocs/agreement.php on line 47 Warning: mssql_fetch_assoc(): supplied argument is not a valid MS SQL-result resource in /srv/www/htdocs/agreement.php on line 48 Warning: mssql_query() [function.mssql-query]: message: Invalid object name 'software.software_dbo.ApplicationInfo'. (severity 16) in /srv/www/htdocs/agreement.php on line 51 Warning: mssql_query() [function.mssql-query]: General SQL Server error: Check messages from the SQL Server (severity 16) in /srv/www/htdocs/agreement.php on line 51 Warning: mssql_query() [function.mssql-query]: Query failed in /srv/www/htdocs/agreement.php on line 51 Warning: mssql_fetch_assoc(): supplied argument is not a valid MS SQL-result resource in /srv/www/htdocs/agreement.php on line 52 The error clearly centers around the fact that the query is not executing. In my database I have a table called Issues and a table called ApplicationInfo so I am unsure why it is telling me that they are invalid objects. Any help would be appreciated. Thanks, Eric R.

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• Date query with Hibernate on Timestamp Column in PostgreSQL

  - by Shashikant Kore

  A table has timestamp column. A sample value in that could be 2010-03-30 13:42:42. With Hibernate, I am doing a range query Restrictions.between("column-name", fromDate, toDate). The Hibernate mapping for this column is as follows. <property name="orderTimestamp" column="order_timestamp" type="java.util.Date" /> Let's say, I want to find out all the records that have the date 30th March 2010 and 31st March 2010. A range query on this field is done as follows. Date fromDate = new SimpleDateFormat("yyyy-MM-dd").parse("2010-03-30"); Date toDate = new SimpleDateFormat("yyyy-MM-dd").parse("2008-03-31"); Expression.between("orderTimestamp", fromDate, toDate); This doesn't work. The query is converted to respective timestamps as "2010-03-30 00:00:00" and "2010-03-31 00:00:00". So, all the records for the 31st March 2010 are ignored. A simple solution to this problem could be to have the end date as "2010-03-31 23:59:59." But, I would like to know if there is way to match only the date part of the timestamp column. Also, is Expression.between() inclusive of both limits? Documentation doesn't throw any light on this.

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• NHibernate - joining on a subquery using ICriteria

  - by owensymes.mp

  I have a SQL query that I need to represent using NHibernate's ICriteria API. SELECT u.Id as Id, u.Login as Login, u.FirstName as FirstName, u.LastName as LastName, gm.UserGroupId_FK as UserGroupId, inner.Data1, inner.Data2, inner.Data3 FROM dbo.User u inner join dbo.GroupMember gm on u.Id = gm.UserAnchorId_FK left join ( SELECT di.UserAnchorId_FK, sum(di.Data1) as Data1, sum(di.Data2) as Data2, sum(di.Data3) as Data3 FROM dbo.DailyInfo di WHERE di.Date between '2009-04-01' and '2009-06-01' GROUP BY di.UserAnchorId_FK ) inner ON inner.UserAnchorId_FK = u.Id WHERE gm.UserGroupId_FK = 195 Attempts so far have included mapping 'User' and 'DailyInfo' classes (my entities) and making a DailyInfo object a property of the User object. However, how to map the foreign key relationship between them is still a mystery, ie <one-to-one></one-to-one> <one-to-many></one-to-many> <generator class="foreign"><param name="property">Id</param></generator> (!) Solutions on the web are generally to do with subqueries within a WHERE clause, however I need to left join on this subquery instead to ensure NULL values are returned for rows that do not join. I have the feeling that I should be using a Criteria for the outer query, then forming a 'join' with a DetachedCriteria to represent the subquery?

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• Django ForeignKey TemplateSyntaxError and ProgrammingError

  - by Daniel Garcia

  This is are my models i want to relate. i want for collection to appear in the form of occurrence. class Collection(models.Model): id = models.AutoField(primary_key=True, null=True) code = models.CharField(max_length=100, null=True, blank=True) address = models.CharField(max_length=100, null=True, blank=True) collection_name = models.CharField(max_length=100) def __unicode__(self): return self.collection_name class Meta: db_table = u'collection' ordering = ('collection_name',) class Occurrence(models.Model): id = models.AutoField(primary_key=True, null=True) reference = models.IntegerField(null=True, blank=True, editable=False) collection = models.ForeignKey(Collection, null=True, blank=True, unique=True), modified = models.DateTimeField(null=True, blank=True, auto_now=True) class Meta: db_table = u'occurrence' Every time i go to check the Occurrence object i get this error TemplateSyntaxError at /admin/hotiapp/occurrence/ Caught an exception while rendering: column occurrence.collection_id does not exist LINE 1: ...LECT "occurrence"."id", "occurrence"."reference", "occurrenc.. And every time i try to add a new occurrence object i get this error ProgrammingError at /admin/hotiapp/occurrence/add/ column occurrence.collection_id does not exist LINE 1: SELECT (1) AS "a" FROM "occurrence" WHERE "occurrence"."coll... What am i doing wrong? or how does ForeignKey works?

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• C# Interop with dll

  - by Jim Jones

  Using VS2008 C# am attempting to interop a C++ dll. Have a C++ class constructor: make_summarizer(const char* rdir, const char* lic, const char* key); Need to retain a reference to the object that is created so I can use it in a follow-on function. When I did this in JNI the c code was: declare a static pointer to the object: static summarizer* summrzr; Then in one of the functions I called this constructor as follows: summrzr = make_summarizer(crdir, clic, ckey); Where the parameters all where the requisite const char* type; So in C# using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Runtime.InteropServices; using System.Configuration; namespace SummarizerApp { class SummApp { private IntPtr summarzr; public SummApp() { string resource_dir = ConfigurationManager.AppSettings["resource_dir"]; string license = ConfigurationManager.AppSettings["license"]; string key = ConfigurationManager.AppSettings["key"]; createSummarizer(resource_dir, license, key); } [System.Runtime.InteropServices.DllImportAttribute("lib\\summarizer37.dll", EntryPoint = "#1")] public static extern IntPtr make_summarizer( [InAttribute()][MarshalAsAttribute(UnmanagedType.LPTStr)] string rdir, [InAttribute()][MarshalAsAttribute(UnmanagedType.LPTStr)] string lic, [InAttribute()][MarshalAsAttribute(UnmanagedType.LPTStr)] string key); public void createSummarizer(string resource_dir, string license, string key) { try { this.summarzr = make_summarizer(resource_dir, license, key); } catch (AccessViolationException e) { Console.WriteLine(e.Message); Console.WriteLine(e.StackTrace); } } Have also tried using IntPtr created using Marshal.StringToHGlobalAnsi(string). Regardless I get a AccessViolationException on the line where I call the native constructor; So what am I doing wrong? Jim

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• Specifying formatting for csv.writer in Python

  - by user248237

  I am using csv.DictWriter to output csv files from a set of dictionaries. I use the following function: def dictlist2file(dictrows, filename, fieldnames, delimiter='\t', lineterminator='\n'): out_f = open(filename, 'w') # Write out header header = delimiter.join(fieldnames) + lineterminator out_f.write(header) # Write out dictionary data = csv.DictWriter(out_f, fieldnames, delimiter=delimiter, lineterminator=lineterminator) data.writerows(dictrows) out_f.close() where dictrows is a list of dictionaries, and fieldnames provides the headers that should be serialized to file. Some of the values in my dictionary list (dictrows) are numeric -- e.g. floats, and I'd like to specify the formatting of these. For example, I might want floats to be serialized with "%.2f" rather than full precision. Ideally, I'd like to specify some kind of mapping that says how to format each type, e.g. {float: "%.2f"} that says that if you see a float, format it with %.2f. Is there an easy way to do this? I don't want to subclass DictWriter or anything complicated like that -- this seems like very generic functionality. How can this be done? The only other solution I can think of is: instead of messing with the formatting of DictWriter, just use the decimal package to specify the decimal precision of floats to be %.2 which will cause to be serialized as such. Don't know if this is a better solution? thanks very much for your help.

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• Inheriting from ViewPage forces explicit casting of model in view

  - by Martin Hansen

  I try to inhering from ViewPage as shown in this question http://stackoverflow.com/questions/370500/inheriting-from-viewpage But I get a Compiler Error Message: CS1061: 'object' does not contain a definition for 'Spot' and no extension method 'Spot' accepting a first argument of type 'object' could be found (are you missing a using directive or an assembly reference?) My viewpage, normally I can do Model.ChildProperty(Spot) when I inherit from ViewPage directly, so I do that here too. But it fails. <%@ Page Language="C#" Inherits="Company.Site.ViewPageBase<WebSite.Models.SpotEntity>" %> <h1><%= Html.Encode(Model.Spot.Title) %></h1> To get it working correctly I have to do like this: <%@ Page Language="C#" Inherits="Company.Site.ViewPageBase<WebSite.Models.SpotEntity>" %> <h1><%= Html.Encode(((WebSite.Models.SpotEntity)Model).Spot.Title) %></h1> Here is my classes: namespace Company.Site { public class ViewPageBase<TModel> : Company.Site.ViewPageBase where TModel:class { private ViewDataDictionary<TModel> _viewData; [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")] public new ViewDataDictionary<TModel> ViewData { get { if (_viewData == null) { SetViewData(new ViewDataDictionary<TModel>()); } return _viewData; } set { SetViewData(value); } } protected override void SetViewData(ViewDataDictionary viewData) { _viewData = new ViewDataDictionary<TModel>(viewData); base.SetViewData(_viewData); } } public class ViewPageBase : System.Web.Mvc.ViewPage { } } So how do I get it to work without the explicit cast?

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