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  • Restrict the class of an association in a Hibernate Criteria query

    - by D Lawson
    I have an object, 'Response' that has a property called 'submitter'. Submitters can be one of several different classes including Student, Teacher, etc... I would like to be able to execute a criteria query where I select only responses submitted by teachers - so this means putting a class restriction on an associated entity. Any ideas on this? I'd like to stay away from direct SQL or HQL.

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  • Try method in powershell

    - by Willy
    So I want to build a try method into my powershell script below. If I am denied access to a server, I want it to skip that server. Please help.. [code]$Computers = "server1", "server2" Get-WmiObject Win32_LogicalMemoryConfiguration -Computer $Computers | Select-Object ` @{n='Server';e={ $_.__SERVER }}, ` @{n='Physical Memory';e={ "$('{0:N2}' -f ($_.TotalPhysicalMemory / 1024))mb" }}, ` @{n='Virtual Memory';e={ "$('{0:N2}' -f ($_.TotalPageFileSpace / 1024))mb" }} | ` Export-CSV "output.csv"[/code]

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  • what is the purpose of getEventType() method in XMLStreamReader Class

    - by KItis
    I have sample code written for parsing xml file using javax.xml package. it uses the method called getEventType() , but I can not understand the purpose of this method. i wrote simple application to understand its usefulness, but it output only some random numbers for which I can not make any sense, could some one help me to get this point right. Here is the sample code I have written. public List parseXML(File f) throws XMLStreamException{ xmlInputFactory = new WstxInputFactory(); xmlInputFactory.setProperty(XMLInputFactory2.IS_REPLACING_ENTITY_REFERENCES, Boolean.FALSE); xmlInputFactory.setProperty(XMLInputFactory2.IS_SUPPORTING_EXTERNAL_ENTITIES, Boolean.FALSE); xmlInputFactory.setProperty(XMLInputFactory2.IS_COALESCING,Boolean.FALSE); xmlInputFactory.setProperty(XMLInputFactory2.IS_VALIDATING,Boolean.FALSE); xmlInputFactory.configureForSpeed(); List<Task> tasks = new LinkedList<Task>(); //xmlStreamReader = xmlInputFactory.createXMLStreamReader(new StringReader(dmml)); xmlStreamReader = xmlInputFactory.createXMLStreamReader(f); int eventType = xmlStreamReader.getEventType(); eventType = xmlStreamReader.next(); System.out.println(eventType); eventType = xmlStreamReader.next(); System.out.println(eventType); eventType = xmlStreamReader.next(); System.out.println(eventType); eventType = xmlStreamReader.next(); System.out.println(eventType); eventType = xmlStreamReader.next(); System.out.println(eventType); eventType = xmlStreamReader.next(); System.out.println(eventType); eventType = xmlStreamReader.next(); System.out.println(eventType); eventType = xmlStreamReader.next(); System.out.println(eventType); eventType = xmlStreamReader.next(); System.out.println(eventType); eventType = xmlStreamReader.next(); System.out.println(eventType); eventType = xmlStreamReader.next(); System.out.println(eventType); /*String currentElement = ""; String currentElementText = ""; }

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  • Ruby's to_s method question (from Axe book 2nd edition)

    - by prosseek
    According to the axe book (2nd edition), we can use to_s as follows. class Song def to_s "Song" end end song = Song.new() song.to_s But, it doesn't give me anything, in order to print something to the stdout, I should run def to_s p "Song" end Is there any change since the ruby 1.8.2 when the book was written for? My ruby version info is 1.8.7 for Mac. ruby 1.8.7 (2009-06-08 patchlevel 173) [universal-darwin10.0]

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  • Return reference from class to this.

    - by Thomas
    Hi, I have the following member of class foo. foo &foo::bar() { return this; } But I am getting compiler errors. What stupid thing am I doing wrong? Compiler error (gcc): error: invalid initialization of non-const reference of type 'foo&' from a temporary of type 'foo* const'

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  • Java: Swap elements in LinkedList class

    - by Algorist
    Hi, I want to maintain order of the elements being added in a list. So, I used a linkedlist in Java. Now I want to be able to swap two elements in the linked list. First of all, I cannot find an elementAt method for linked list. Also, there is no way to add element at a specified position. Thank you.

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  • Client-side Twitter API method using XMLHttpRequest?

    - by user359239
    Does (or did) Twitter ever have a method in their API that allowed client-side HTTP requests without producing any cross-domain issues? I have a site that used the following url: http://search.twitter.com/search.json?q=from%3adaleyjem&rpp=3&page=1&callback=? It once worked, but now it doesn't. Is there something else I should be using, or do I have to make a request to my own server-side code?

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  • How to find out if a method exists in Obj-C when given an NSString

    - by Justin
    I have a method as an NSString *. If it exists, I want to call it, and if not, do nothing. SEL eventSelector = NSSelectorFromString(eventSelectorStr); if ([delegate respondsToSelector:eventSelector]) { [delegate performSelector:eventSelector]; [delegate adapterDidFinishAdRequest:self]; } else { // Does not implement selector } This code does not work, since NSSelectorFromString will register the string as a selector, so respondsToSelector:eventSelector will cause a crash because the selector is actually invalid.

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  • C# Extension Method for String Data Type

    - by Jimbo
    My web application deals with strings that need to be converted to numbers alot - users often put commas, currency symbols etc. in these fields so what I want to do is create a string extension method that cleans the field up and converts it to a decimal. For example: decimal myNumber = "$1,250.85".ToDecimal(); Can anyone help with this? Thanks!

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  • convert a class to byte array + C#

    - by Newbie
    How can I convert a Class to byte array in C#. This is a managed one so the following code is failing int objsize = System.Runtime.InteropServices.Marshal.SizeOf(objTimeSeries3D); byte[] arr = new byte[objsize]; IntPtr buff = System.Runtime.InteropServices.Marshal.AllocHGlobal(objsize); System.Runtime.InteropServices.Marshal.StructureToPtr(objTimeSeries3D, buff, true); System.Runtime.InteropServices.Marshal.Copy(buff, arr, 0, objsize); System.Runtime.InteropServices.Marshal.FreeHGlobal(buff); Thanks

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  • How to return string name of calling method?

    - by keruilin
    Right now my code works as such: def method_a self.method_b ==> 'method_b' end def method_b puts self.name_of_calling_method end def name_of_calling_method if /`(.*)'/.match(caller.first) return $1 else return nil end end Instead of method_b printing 'method_b', how can I print the name of the calling method - 'method_a'?

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  • useless class storage specifier in empty declaration

    - by robUK
    Hello, gcc 4.4.1 c89 I have the following code and I get a warning: unless class storage specifier in empty declaration static enum states { ACTIVE, RUNNING, STOPPED, IDLE } However, if i remove the static keyword I don't get that warning. I am compiling with the following flags: -Wall -Wextra Many thanks for any suggestions,

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  • intrusive_ptr: Why isn't a common base class provided?

    - by Jon
    intrusive_ptr requires intrusive_ptr_add_ref and intrusive_ptr_release to be defined. Why isn't a base class provided which will do this? There is an example here: http://lists.boost.org/Archives/boost/2004/06/66957.php, but the poster says "I don't necessarily think this is a good idea". Why not?

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  • where store event handler method in WPF - MVVM

    - by netmajor
    Hey, Where should I store event methods for button Click event ?Normally it's store in code behind of wpf page, <Button Name="myButton" Click="myButton_Click">Click Me</Button> but in MVVM it should be store in other view-model class and bind to click property of button like that?? <Button Name="myButton" Click="{Binding StaticResouces myButton_Click}">Click Me</Button>

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