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  • pagination for displaytag with colorbox in Spring framework

    - by Hitesh Solanki
    Hi..... I want to display the pop up for user selection using colorbox. I have put link on manageblacklist.jsp named 'select'. when I click on 'select' link ,colorbox is displayed. all user is displayed but pagination is not worked. I have used display tag for pagination. Without using colorbox, pagination is worked fine. I have used spring framework. The code of manageblacklist.jsp is given below: <%@ page contentType="text/html" pageEncoding="UTF-8" import="java.util.*"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <%@ include file="/WEB-INF/jsp/include.jsp" %> <%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %> <%@ taglib uri="http://displaytag.sf.net" prefix="display" %> <%@ page import="com.sufalam.mailserver.bean.User"%> <%@ page import="javax.servlet.http.HttpSession" %> <% String pageSize = (String) request.getAttribute("pageSize"); System.out.println("page size:" + pageSize); HttpSession session1 = request.getSession(); List<User> userList = (List<User>) session1.getAttribute("userList"); Iterator iterator = userList.iterator(); String user = (String) request.getAttribute("user"); System.out.println("user in the jsp :" + user); %> <html> <head> <script type="text/javascript" src="js/jquery142.js"></script> <script type="text/javascript" src="js/jquery.colorbox.js"></script> <link rel="stylesheet" href="style/colorbox.css" type="text/css"> <script type="text/javascript"> $(document).ready(function(){ //Examples of how to assign the ColorBox event to elements $(".example5").colorbox(); //Example of preserving a JavaScript event for inline calls. $("#click").click(function(){ $('#click').css({"background-color":"#f00", "color":"#fff", "cursor":"inherit"}).text("Open this window again and this message will still be here."); return false; }); }); </script> <script type="text/javascript"> function changePageSize() { var myValue = document.getElementById("combo1").value; document.getElementById("selectedPageSize").value=myValue; document.whitelistBlacklistForm.submit(); } function selectAll() { var selectAll = document.getElementById("checkAll"); var returnById = document.getElementsByName("check"); var i; var val; if (selectAll.checked == true) { val = true; } else { val = false; } for (i = 0; i < returnById.length; i++) { returnById[i].checked = val; } } function onload() { insertNavigation ('insertHereTop', 'insertHereBottom'); } function insertNavigation( topElementID, BottomElementID ) { if ( document.getElementById('pagingBanner') ){ document.getElementById(topElementID).innerHTML=document.getElementById('pagingBanner').innerHTML; document.getElementById(BottomElementID).innerHTML=document.getElementById('pagingBanner1').innerHTML; } } function confirmDelete() { if (confirm("Are you sure you want to delete selected records?")) { flag = 1; return true; } else { return false; } } function loadModels() { var flag=true; var textValue = document.getElementById('txtuser'); $.getJSON("ajaxblacklist.htm", // url { param :textValue.value }, // request params function(json) { // callback // var options = '<table class="displayTable" cellspacing="0"><thead><tr><th align = "center">Blacklisted Sender</th>'+ // '<th align ="center">Delete</th></tr></thead><tbody>'; var options = '<table width="100%" border="0" cellspacing="0" cellpadding="0"><tr><td style="background:url(images/leftbg.gif) repeat-y; width:8px;"></td>' + '<td class="middlesection"><table width="100%" border="0" cellspacing="0" cellpadding="0"><tr>' + '<td height="30" class="p10"><table width="100%" border="0" cellspacing="0" cellpadding="0" class="allboder" >' + '<tr><td class="tebelhd"> Blacklisted Sender </td></tr>'; for (i in json) { var state = json[i]; for(j in state){ var op = state[j]; if(op.length==undefined){ options += '<tr><td class="tdhd"><table width="0%" border="0" cellspacing="0" cellpadding="0"><tr><td width="741">'+ state[j].senderEmail + '</td><td align="center" width="148"><a href="managewhitelistblacklist.htm?sender='+state[j].senderEmail+'&recipient='+ state[j].recipientEmail+'&action=delete"><span> <img src="/MailServerV2/images/delete.gif"/> </span></a></td></tr></table></td></tr>'; break; } for(k in op) { if(flag == true) { flag = false; options += '<tr><td class="tdhd"><table width="0%" border="0" cellspacing="0" cellpadding="0"><tr>'; } else { flag = true; options += '<tr><td class="tdhd2"><table width="0%" border="0" cellspacing="0" cellpadding="0"><tr>'; } options += '<td width="741">'+ op[k].senderEmail +'</td><td align="center" width="148"><a href="managewhitelistblacklist.htm?sender='+op[k].senderEmail+'&recipient='+op[k].recipientEmail+'&action=delete"><span> <img src="/MailServerV2/images/delete.gif"/> </span></a></td></tr></table></td></tr>'; } } } options += '</td></tr></table>'; $("div[name^=blacklist]").html(options); }); } </script> </head> <body> <table width="" border="0" align="center" cellpadding="0" cellspacing="0" class="maintable"> <tr> <td class="topsection"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td valign="top" align="center" class="middlesection" ><table width="96%" border="0" cellspacing="0" cellpadding="0"> <tr> <td >&nbsp;</td> </tr> <tr> <td> <table width="100%" border="0" cellspacing ="0" cellpadding="0"> <tr> <td> <table width="100%" border="0" cellspacing="0" cellpadding="3"> <tr> <td align="left" valign="middle"><h1>Manage Blacklist</h1></td> <td align="right" valign="bottom"><div style="float:right;"><a href="savewhitelistblacklist.htm" class="buttonash"><span>Create Whitelist Blacklist </span></a></div></td> </tr> </table></td> </tr> <tr> <td class="bottomboder"><img src="images/ashish.gif" height="1" /></td> </tr> </table> </td> </tr> <tr> <td>&nbsp;</td> </tr> <tr> <td> </td> </tr> <tr> <td> <div id="TabbedPanels1" class="TabbedPanels"/> <div style="display: block;" class="TabbedPanelsContent"/> <div align="left" class="tebelhd"> Blacklist Information </div><div class="entry-edit"> <div class="fieldset" id="base_fieldset"> <div class="hor-scroll_1" align="left"> <fieldset Class="label1css" style="color:#666666"> <legend>Fields</legend> <table> <tr> <td align="right"> Recipient Email : </td> <td><input type="text" id="txtuser" name="txtuser" <% if (user != null) { %> value="<%=user%>" <% } else { %> value="" <% } %> /> </td> <td><a href="#" class="buttonash" onclick="loadModels()"><span>Search</span></a></td> <!-- <td><a href="javascript:void(0)" class="buttonash" onclick="window.open('selectuser.htm','selectuser','width=600,height=400,menubar=yes,status=yes,location=yes,toolbar=yes,scrollbars=yes');" ><span>Select</span></a></td>--> <td><a href="selectuser.htm" class="example5 buttonash" ><span>Select</span></a> </td> <td align="right"> </td> </tr> </table> </fieldset> <div id="blacklist" name="blacklist"></div> </div> </div> </div> </td> </tr> </table> </td> </tr> </table> </td> <!-- InstanceEndEditable --> <td style="background:url(images/rightbg.gif) repeat-y; width:8px;"></td> </tr> </table> <% // session1.removeAttribute("user"); %> </body> </html> So , please tell me how to work pagination .... Thanks in advanced...

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  • Trying to find USB device on iphone with IOKit.framework

    - by HuGeek
    Hi all, i'm working on a project were i need the usb port to communicate with a external device. I have been looking for exemple on the net (Apple and /developer/IOKit/usb exemple) and trying some other but i can't even find the device. In my code i blocking at the place where the fucntion looks for a next iterator (pointer in fact) with the function getNextIterator but never returns a good value so the code is blocking. By the way i am using toolchain and added IOKit.framework in my project. All i what right now is the communicate or do like a ping to someone on the USB bus!! I blocking in the 'FindDevice'....i can't manage to enter in the while because the variable usbDevice is always = to 0....i have tested my code in a small mac program and it works... Thanks Here is my code : IOReturn ConfigureDevice(IOUSBDeviceInterface **dev) { UInt8 numConfig; IOReturn result; IOUSBConfigurationDescriptorPtr configDesc; //Get the number of configurations result = (*dev)->GetNumberOfConfigurations(dev, &numConfig); if (!numConfig) { return -1; } // Get the configuration descriptor result = (*dev)->GetConfigurationDescriptorPtr(dev, 0, &configDesc); if (result) { NSLog(@"Couldn't get configuration descriptior for index %d (err=%08x)\n", 0, result); return -1; } ifdef OSX_DEBUG NSLog(@"Number of Configurations: %d\n", numConfig); endif // Configure the device result = (*dev)->SetConfiguration(dev, configDesc->bConfigurationValue); if (result) { NSLog(@"Unable to set configuration to value %d (err=%08x)\n", 0, result); return -1; } return kIOReturnSuccess; } IOReturn FindInterfaces(IOUSBDeviceInterface *dev, IOUSBInterfaceInterface **itf) { IOReturn kr; IOUSBFindInterfaceRequest request; io_iterator_t iterator; io_service_t usbInterface; IOUSBInterfaceInterface **intf = NULL; IOCFPlugInInterface **plugInInterface = NULL; HRESULT res; SInt32 score; UInt8 intfClass; UInt8 intfSubClass; UInt8 intfNumEndpoints; int pipeRef; CFRunLoopSourceRef runLoopSource; NSLog(@"Debut FindInterfaces \n"); request.bInterfaceClass = kIOUSBFindInterfaceDontCare; request.bInterfaceSubClass = kIOUSBFindInterfaceDontCare; request.bInterfaceProtocol = kIOUSBFindInterfaceDontCare; request.bAlternateSetting = kIOUSBFindInterfaceDontCare; kr = (*dev)->CreateInterfaceIterator(dev, &request, &iterator); usbInterface = IOIteratorNext(iterator); IOObjectRelease(iterator); NSLog(@"Interface found.\n"); kr = IOCreatePlugInInterfaceForService(usbInterface, kIOUSBInterfaceUserClientTypeID, kIOCFPlugInInterfaceID, &plugInInterface, &score); kr = IOObjectRelease(usbInterface); // done with the usbInterface object now that I have the plugin if ((kIOReturnSuccess != kr) || !plugInInterface) { NSLog(@"unable to create a plugin (%08x)\n", kr); return -1; } // I have the interface plugin. I need the interface interface res = (*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(kIOUSBInterfaceInterfaceID), (LPVOID*) &intf); (*plugInInterface)->Release(plugInInterface); // done with this if (res || !intf) { NSLog(@"couldn't create an IOUSBInterfaceInterface (%08x)\n", (int) res); return -1; } // Now open the interface. This will cause the pipes to be instantiated that are // associated with the endpoints defined in the interface descriptor. kr = (*intf)->USBInterfaceOpen(intf); if (kIOReturnSuccess != kr) { NSLog(@"unable to open interface (%08x)\n", kr); (void) (*intf)->Release(intf); return -1; } kr = (*intf)->CreateInterfaceAsyncEventSource(intf, &runLoopSource); if (kIOReturnSuccess != kr) { NSLog(@"unable to create async event source (%08x)\n", kr); (void) (*intf)->USBInterfaceClose(intf); (void) (*intf)->Release(intf); return -1; } CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource, kCFRunLoopDefaultMode); if (!intf) { NSLog(@"Interface is NULL!\n"); } else { *itf = intf; } NSLog(@"End of FindInterface \n \n"); return kr; } unsigned int FindDevice(void *refCon, io_iterator_t iterator) { kern_return_t kr; io_service_t usbDevice; IOCFPlugInInterface **plugInInterface = NULL; HRESULT result; SInt32 score; UInt16 vendor; UInt16 product; UInt16 release; unsigned int count = 0; NSLog(@"Searching Device....\n"); while (usbDevice = IOIteratorNext(iterator)) { // create intermediate plug-in NSLog(@"Found a device!\n"); kr = IOCreatePlugInInterfaceForService(usbDevice, kIOUSBDeviceUserClientTypeID, kIOCFPlugInInterfaceID, &plugInInterface, &score); kr = IOObjectRelease(usbDevice); if ((kIOReturnSuccess != kr) || !plugInInterface) { NSLog(@"Unable to create a plug-in (%08x)\n", kr); continue; } // Now create the device interface result = (*plugInInterface)->QueryInterface(plugInInterface, CFUUIDGetUUIDBytes(kIOUSBDeviceInterfaceID), (LPVOID)&dev); // Don't need intermediate Plug-In Interface (*plugInInterface)->Release(plugInInterface); if (result || !dev) { NSLog(@"Couldn't create a device interface (%08x)\n", (int)result); continue; } // check these values for confirmation kr = (*dev)->GetDeviceVendor(dev, &vendor); kr = (*dev)->GetDeviceProduct(dev, &product); //kr = (*dev)->GetDeviceReleaseNumber(dev, &release); //if ((vendor != LegoUSBVendorID) || (product != LegoUSBProductID) || (release != LegoUSBRelease)) { if ((vendor != LegoUSBVendorID) || (product != LegoUSBProductID)) { NSLog(@"Found unwanted device (vendor = %d != %d, product = %d != %d, release = %d)\n", vendor, kUSBVendorID, product, LegoUSBProductID, release); (void) (*dev)-Release(dev); continue; } // Open the device to change its state kr = (*dev)->USBDeviceOpen(dev); if (kr == kIOReturnSuccess) { count++; } else { NSLog(@"Unable to open device: %08x\n", kr); (void) (*dev)->Release(dev); continue; } // Configure device kr = ConfigureDevice(dev); if (kr != kIOReturnSuccess) { NSLog(@"Unable to configure device: %08x\n", kr); (void) (*dev)->USBDeviceClose(dev); (void) (*dev)->Release(dev); continue; } break; } return count; } // USB rcx Init IOUSBInterfaceInterface** osx_usb_rcx_init (void) { CFMutableDictionaryRef matchingDict; kern_return_t result; IOUSBInterfaceInterface **intf = NULL; unsigned int device_count = 0; // Create master handler result = IOMasterPort(MACH_PORT_NULL, &gMasterPort); if (result || !gMasterPort) { NSLog(@"ERR: Couldn't create master I/O Kit port(%08x)\n", result); return NULL; } else { NSLog(@"Created Master Port.\n"); NSLog(@"Master port 0x:08X \n \n", gMasterPort); } // Set up the matching dictionary for class IOUSBDevice and its subclasses matchingDict = IOServiceMatching(kIOUSBDeviceClassName); if (!matchingDict) { NSLog(@"Couldn't create a USB matching dictionary \n"); mach_port_deallocate(mach_task_self(), gMasterPort); return NULL; } else { NSLog(@"USB matching dictionary : %08X \n", matchingDict); } CFDictionarySetValue(matchingDict, CFSTR(kUSBVendorID), CFNumberCreate(kCFAllocatorDefault, kCFNumberShortType, &LegoUSBVendorID)); CFDictionarySetValue(matchingDict, CFSTR(kUSBProductID), CFNumberCreate(kCFAllocatorDefault, kCFNumberShortType, &LegoUSBProductID)); result = IOServiceGetMatchingServices(gMasterPort, matchingDict, &gRawAddedIter); matchingDict = 0; // this was consumed by the above call // Iterate over matching devices to access already present devices NSLog(@"RawAddedIter : 0x:%08X \n", &gRawAddedIter); device_count = FindDevice(NULL, gRawAddedIter); if (device_count == 1) { result = FindInterfaces(dev, &intf); if (kIOReturnSuccess != result) { NSLog(@"unable to find interfaces on device: %08x\n", result); (*dev)-USBDeviceClose(dev); (*dev)-Release(dev); return NULL; } // osx_usb_rcx_wakeup(intf); return intf; } else if (device_count 1) { NSLog(@"too many matching devices (%d) !\n", device_count); } else { NSLog(@"no matching devices found\n"); } return NULL; } int main(int argc, char *argv[]) { int returnCode; NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSLog(@"Debut du programme \n \n"); osx_usb_rcx_init(); NSLog(@"Fin du programme \n \n"); return 0; // returnCode = UIApplicationMain(argc, argv, @"Untitled1App", @"Untitled1App"); // [pool release]; // return returnCode; }

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  • Entity Framework v1 &hellip; Brief Synopsis and Tips &ndash; Part 2

    - by Rohit Gupta
    Using Entity Framework with ASMX Web sErvices and WCF Web Service: If you use ASMX WebService to expose Entity objects from Entity Framework... then the ASMX Webservice does not  include object graphs, one work around is to use Facade pattern or to use WCF Service. The other important aspect of using ASMX Web Services along with Entity Framework is that the ASMX Client is not aware of the existence of EF v1 since the client solely deals with C# objects (not EntityObjects or ObjectContext). Since the client is not aware of the ObjectContext hence the client cannot participate in change tracking since the client only receives the Current Values and not the Orginal values when the service sends the the Entity objects to the client. Thus there are 2 drawbacks to using EntityFramework with ASMX Web Service: 1. Object state is not maintained... so to overcome this limitation we need insert/update single entity at a time and retrieve the original values for the entity being updated on the server/service end before calling Save Changes. 2. ASMX does not maintain object graphs... i.e. Customer.Reservations or Customer.Reservations.Trip relationships are not maintained. Thus you need to send these relationships separately from service to client. WCF Web Service overcomes the object graph limitation of ASMX Web Service, but we need to insure that we are populating all the non-null scalar properties of all the objects in the object graph before calling Update. WCF Web service still cannot overcome the second limitation of tracking changes to entities at the client end. Also note that the "Customer" class in the Client is very different from the "Customer" class in the Entity Framework Model Entities. They are incompatible with each other hence we cannot cast one to the other. However the .NET Framework translates the client "Customer" Entity to the EFv1 Model "customer" Entity once the entity is serialzed back on the ASMX server end. If you need change tracking enabled on the client then we need to use WCF Data Services which is available with VS 2010. ====================================================================================================== In WCF when adding an object that has relationships, the framework assumes that every object in the object graph needs to be added to store. for e.g. in a Customer.Reservations.Trip object graph, when a Customer Entity is added to the store, the EFv1 assumes that it needs to a add a Reservations collection and also Trips for each Reservation. Thus if we need to use existing Trips for reservations then we need to insure that we null out the Trip object reference from Reservations and set the TripReference to the EntityKey of the desired Trip instead. ====================================================================================================== Understanding Relationships and Associations in EFv1 The Golden Rule of EF is that it does not load entities/relationships unless you ask it to explicitly do so. However there is 1 exception to this rule. This exception happens when you attach/detach entities from the ObjectContext. If you detach an Entity in a ObjectGraph from the ObjectContext, then the ObjectContext removes the ObjectStateEntry for this Entity and all the relationship Objects associated with this Entity. For e.g. in a Customer.Order.OrderDetails if the Customer Entity is detached from the ObjectContext then you cannot traverse to the Order and OrderDetails Entities (that still exist in the ObjectContext) from the Customer Entity(which does not exist in the Object Context) Conversely, if you JOIN a entity that is not in the ObjectContext with a Entity that is in the ObjContext then the First Entity will automatically be added to the ObjContext since relationships for the 2 Entities need to exist in the ObjContext. ========================================================= You cannot attach an EntityCollection to an entity through its navigation property for e.g. you cannot code myContact.Addresses = myAddressEntityCollection ========================================================== Cascade Deletes in EDM: The Designer does not support specifying cascase deletes for a Entity. To enable cascasde deletes on a Entity in EDM use the Association definition in CSDL for the Entity. for e.g. SalesOrderDetail (SOD) has a Foreign Key relationship with SalesOrderHeader (SalesOrderHeader 1 : SalesOrderDetail *) if you specify a cascade Delete on SalesOrderHeader Entity then calling deleteObject on SalesOrderHeader (SOH) Entity will send delete commands for SOH record and all the SOD records that reference the SOH record. ========================================================== As a good design practise, if you use Cascade Deletes insure that Cascade delete facet is used both in the EDM as well as in the database. Even though it is not absolutely mandatory to have Cascade deletes on both Database and EDM (since you can see that just the Cascade delete spec on the SOH Entity in EDM will insure that SOH record and all related SOD records will be deleted from the database ... even though you dont have cascade delete configured in the database in the SOD table) ============================================================== Maintaining relationships in Code When Setting a Navigation property of a Entity (for e.g. setting the Contact Navigation property of Address Entity) the following rules apply : If both objects are detached, no relationship object will be created. You are simply setting a property the CLR way. If both objects are attached, a relationship object will be created. If only one of the objects is attached, the other will become attached and a relationship object will be created. If that detached object is new, when it is attached to the context its EntityState will be Added. One important rule to remember regarding synchronizing the EntityReference.Value and EntityReference.EntityKey properties is that when attaching an Entity which has a EntityReference (e.g. Address Entity with ContactReference) the Value property will take precedence and if the Value and EntityKey are out of sync, the EntityKey will be updated to match the Value. ====================================================== If you call .Load() method on a detached Entity then the .Load() operation will throw an exception. There is one exception to this rule. If you load entities using MergeOption.NoTracking, you will be able to call .Load() on such entities since these Entities are accessible by the ObjectContext. So the bottomline is that we need Objectontext to be able to call .Load() method to do deffered loading on EntityReference or EntityCollection. Another rule to remember is that you cannot call .Load() on entities that have a EntityState.Added State since the ObjectContext uses the EntityKey of the Primary (Parent) Entity when loading the related (Child) Entity (and not the EntityKey of the child (even if the EntityKey of the child is present before calling .Load()) ====================================================== You can use ObjContext.Add() to add a entity to the ObjContext and set the EntityState of the new Entity to EntityState.Added. here no relationships are added/updated. You can also use EntityCollection.Add() method to add an entity to another entity's related EntityCollection for e.g. contact has a Addresses EntityCollection so to add a new address use contact.Addresses.Add(newAddress) to add a new address to the Addresses EntityCollection. Note that if the entity does not already exist in the ObjectContext then calling contact.Addresses.Add(myAddress) will cause a new Address Entity to be added to the ObjContext with EntityState.Added and it will also add a RelationshipEntry (a relationship object) with EntityState.Added which connects the Contact (contact) with the new address newAddress. Note that if the entity already exists in the Objectcontext (being part theOtherContact.Addresses Collection), then calling contact.Addresses.Add(existingAddress) will add 2 RelationshipEntry objects to the ObjectStateEntry Collection, one with EntityState.Deleted and the other with EntityState.Added. This implies that the existingAddress Entity is removed from the theOtherContact.Addresses Collection and Added to the contact.Addresses Collection..effectively reassigning the address entity from the theOtherContact to "contact". This is called moving an existing entity to a new object graph. ====================================================== You usually use ObjectContext.Attach() and EntityCollection.Attach() methods usually when you need to reconstruct the ObjectGraph after deserializing the objects as received from a ASMX Web Service Client. Attach is usually used to connect existing Entities in the ObjectContext. When EntityCollection.Attach() is called the EntityState of the RelationshipEntry (the relationship object) remains as EntityState.unchanged whereas when EntityCollection.Add() method is called the EntityState of the relationship object changes to EntityState.Added or EntityState.Deleted as the situation demands. ========================================================= LINQ To Entities Tips: Select Many does Inner Join by default.   for e.g. from c in Contact from a in c.Address select c ... this will do a Inner Join between the Contacts and Addresses Table and return only those Contacts that have a Address. ======================================================== Group Joins Do LEFT Join by default. e.g. from a in Address join c in Contact ON a.Contact.ContactID == c.ContactID Into g WHERE a.CountryRegion == "US" select g; This query will do a left join on the Contact table and return contacts that have a address in "US" region The following query : from c in Contact join a in Address.Where(a1 => a1.CountryRegion == "US") on c.ContactID  equals a.Contact.ContactID into addresses select new {c, addresses} will do a left join on the Address table and return All Contacts. In these Contacts only those will have its Address EntityCollection Populated which have a Address in the "US" region, the other contacts will have 0 Addresses in the Address collection (even if addresses for those contacts exist in the database but are in a different region) ======================================================== Linq to Entities does not support DefaultIfEmpty().... instead use .Include("Address") Query Builder method to do a Left JOIN or use Group Joins if you need more control like Filtering on the Address EntityCollection of Contact Entity =================================================================== Use CreateSourceQuery() on the EntityReference or EntityCollection if you need to add filters during deferred loading of Entities (Deferred loading in EFv1 happens when you call Load() method on the EntityReference or EntityCollection. for e.g. var cust=context.Contacts.OfType<Customer>().First(); var sq = cust.Reservations.CreateSourceQuery().Where(r => r.ReservationDate > new DateTime(2008,1,1)); cust.Reservations.Attach(sq); This populates only those reservations that are older than Jan 1 2008. This is the only way (in EFv1) to Attach a Range of Entities to a EntityCollection using the Attach() method ================================================================== If you need to get the Foreign Key value for a entity e.g. to get the ContactID value from a Address Entity use this :                                address.ContactReference.EntityKey.EntityKeyValues.Where(k=> k.Key == "ContactID")

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  • Including Microsoft.XNA.Framework.Input.Touch in a project?

    - by steven_desu
    So after running through tutorials by both Microsoft and www.xnadevelopment.com I feel very confident in my ability to get to work on my first game using the XNA Framework. I've manipulated sprites, added audio, changed game states, and even went a step further to apply the knowledge I had and figure out how to make animations and basic 2-dimensional physics (including impulses, force, acceleration, and speed calculations) But then shortly into the project I hit a curious bump that I've been unable to figure out. In wanting to implement menus, pause screens, and several different aspects of play (a "pre-level" prep screen, the level itself, and a screen after the level to review how well you did) I took a look at Microsoft's Game State Management sample. I understood the concept, although it was admittedly quite a lot to take in. Not wanting to recreate the entire concept by scratch (after all- what purpose would that serve?) I tried copying and pasting the sample code into my own ScreenManager class (as well as InputState and GameScreen classes) to try and borrow their ingenuity. When I did this, however, my project stopped compiling. I was getting the following error: The type or namespace name 'Touch' does not exist in the namespace 'Microsoft.Xna.Framework.Input' (are you missing an assembly reference?) Having read through their sample code already, I realized that this namespace and every function and class within it could be safely ripped from the code without losing functionality. It's a namespace simply for integrating with touchscreen devices (presumably Windows Phone 7, but maybe also tablets). But then I began to wonder- how come Microsoft's sample compiled but mine didn't? I copied their code exactly so there must be a setting somewhere that I need to change in Visual Studio in order to correct this. I tried creating a new project as a Windows Phone 7 game rather than a Windows game, however that only forced it to compile to a Windows Phone emulator and denied me the ability to change the resolution and other features which I clearly had the power to do in the sample code. So my question is simple - how do I properly use the namespace Microsoft.XNA.Framework.Input.Touch?

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  • Poll on Entity Framework 4 &ndash; one year on

    - by Eric Nelson
    12 months back (today is March 15th 2010) on the 16th of  March 2009 I created a poll on Entity Framework v1 – the marmite of ORMs? A quick poll…. Entity Framework v1 was getting a mixed reception at the time – I met developers who genuinely hated it and I met developers who were loving the productivity improvements they were seeing. There were definitely issues with v1, too many IMHO. Which is why the product team placed a huge effort on listening to the community to drive the feature set for v2 (which ultimately was named Entity Framework 4 as it ships with .NET 4). I think overall the team have done a great job. It isn’t perfect in .NET 4 (which is why the team are busy on post .NET 4 improvements) but I would happily use it and recommend it for a wide variety of projects – much wider than I would have with v1. I am speaking on EF 4 at www.devweek.com this Wednesday and I thought it would be fun to put a new version of the poll out and see how v4 is being received. Obviously the big difference is we have not yet shipped EF4 vs when I did the original poll on EF1. March 2010 poll – please vote Summary of March 2009 poll – it was a tie between positive and negative Total votes 150 Positive about EF v1 42 (15 + 19 + 8) Negative about EF v1  43 (34 + 9)

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  • LINQ to Entities for subtracting 2 dates

    - by Michael I
    I am trying to determine the number of days between 2 dates using LINQ with Entity Framework. It is telling me that it does not recognize Subtract on the System.TimeSpan class Here is my where portion of the LINQ query. where ((DateTime.Now.Subtract(vid.CreatedDate).TotalDays < maxAgeInDays)) Here is the error I receive in the VS.NET debugger {"LINQ to Entities does not recognize the method 'System.TimeSpan Subtract(System.DateTime)' method, and this method cannot be translated into a store expression."} Am I doing something wrong or is there a better way to get the number of days between 2 DateTimes in the entity framework? thanks Michael

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  • Java 2D Game Frameworks

    - by Software Monkey
    I have been looking at frameworks for writing 2D games in Java - part of a growing desire to rediscover my roots in writing those simple but addictive video games. I have googled and found some possibilities, but it's hard to judge which is best without investing significant time in each. Does anyone out there have any recommendations from experience, preferably with a list of pro's and con's for the framework. NOTE: I am not looking so much for comparisons between frameworks but, rather, feedback on any given framework from actually having used it firsthand, or knowing someone who has. The other possibility I am considering is rolling my own, but would rather not. EDIT: I am targeting Java on the Desktop, and expect capable machines, though not state of the art. Some of the 2D engines I have found: Free PulpCore (License: BSD) Slick2D (License: BSD) GTGE - Golden T Game Engine JGame GAGE - Genuine Advantage Gaming Engine GameFrame for Java Basilisk (2D and 3D) Free for non-commercial use Genuts EasyWay - a high-level 2D engine

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  • Generating Entity Keys

    - by David Veeneman
    I have run into my first dissapointment with Entity Framework 4. It turns out that SQL CE, when used with EF4, does not support autogenerated primary keys. I get a System.Data.UpdateException from OnjectContext.SaveChanges() with this message: Server-generated keys and server-generated values are not supported by SQL Server Compact. So, now I have to manually generate keys for my entities. Assuming I want to use auto-incremented integer keys, what is the best way to go about generating and keeping track of the keys when using Entity Framework? Thanks for your help.

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  • PHP session starter detect for visitor counting

    - by zapping
    Is there a way to find out on session being started. Like for instance the session start event in the global.ascx file of .net. The requirement is to find the no. of visits the user has done on the site. Instead of checking each time during posts or gets to the server. Is there something in php to find out if the session is a new one. Zen framework is also used for the app.

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  • The Project Location is Not Trusted error in Visual Studio

    - by SLC
    Quite a simple error, and the reason is obvious - I mapped a network drive, and I am opening the solution from it. Visual Studio gives me this error. I tried googling, and to my surprise, couldn't find a fix. I am running Visual Studio 2008. The solutions I found on google say I should run Mscorcfg.msc, but unfortunately, I don't seem to have that file anywhere on my computer. Nor do I seem to have anything in my control panel relating to .NET Framework. I can of course, run .NET applications fine, so the framework exists. Another solution suggested running caspol.exe, although this is .NET 2, which I also tried to no avail. Any ideas? I should add that I am trying to add the path to whatever trusted list there is.

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  • Inherit a parent class docstring as __doc__ attribute

    - by Reinout van Rees
    There is a question about Inherit docstrings in Python class inheritance, but the answers there deal with method docstrings. My question is how to inherit a docstring of a parent class as the __doc__ attribute. The usecase is that Django rest framework generates nice documentation in the html version of your API based on your view classes' docstrings. But when inheriting a base class (with a docstring) in a class without a docstring, the API doesn't show the docstring. It might very well be that sphinx and other tools do the right thing and handle the docstring inheritance for me, but django rest framework looks at the (empty) .__doc__ attribute. class ParentWithDocstring(object): """Parent docstring""" pass class SubClassWithoutDoctring(ParentWithDocstring): pass parent = ParentWithDocstring() print parent.__doc__ # Prints "Parent docstring". subclass = SubClassWithoutDoctring() print subclass.__doc__ # Prints "None" I've tried something like super(SubClassWithoutDocstring, self).__doc__, but that also only got me a None.

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  • It is okay to migrate to Asp.NET 4.0 now?

    - by Tarik
    Okay today, as most of you noticed Framework 4.0 has been released. I've been working on a project which is being built on framework 3.5. Since I want to use dynamic keyword and most of the asp.net features like Tableless Menu Control, ClientIDMode and clean web.config etc. I am kinda urging to migrate the unfinished project to 4.0 but I am little hesitating about that.Some times I think it is way better to wait for SP1. So what do you think about it? You guys will migrate to unfinished projects or will still hang out with 3.5 for a while. Thanks.

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  • EF and design pattern

    - by kathy
    Hello, I’m working on a high volume transactional enterprise application(asp.net, windows app, oracle app as client) which has been designed using n-tire application and SOA architecture .The application was developed in the .NET platform utilizing C#,VB.NET, Framework 3.5 (I’m planning to upgrade to the , Framework 4.0), EF( EF in the data layer level) and WCF(WCF services in the service layer level) Since this is the first project using EF, and having read about using EF in n-tier and SOA applications, and the features available in the EF Feature, I have the following points: Which design pattern should I use in EF( Simple Entities, Change Set, Self-Tracking Entities and DTOs) in the data layer level In addition Which design pattern should I use in the other tier and layer to get the best practices of EF Thanks

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  • Modify url for bookmarking using JavaScript

    - by jamesaharvey
    I'm exploring my options for modifying urls in the browser bar for bookmarking purposes. Ideally, I'd like to add querystring parameters and cannot determine if this is even possible. I don't want the page to refresh and want to add querystring values on link clicks, ajax calls, etc. If I can't add querystring parameters, then I'd like to add hash values (http:://someurl.com#hash-value). How should I go about doing this? Should I use plain JavaScript or a framework (jquery, prototype, etc.) and/or framework plugin.

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  • Potential for SQL injection here?

    - by Matt Greer
    This may be a really dumb question but I figure why not... I am using RIA Services with Entity Framework as the back end. I have some places in my app where I accept user input and directly ask RIA Services (and in turn EF and in turn my database) questions using their data. Do any of these layers help prevent security issues or should I scrub my data myself? For example, whenever a new user registers with the app, I call this method: [Query] public IEnumerable<EmailVerificationResult> VerifyUserWithEmailToken(string token) { using (UserService userService = new UserService()) { // token came straight from the user, am I in trouble here passing it directly into // my DomainService, should I verify the data here (or in UserService)? User user = userService.GetUserByEmailVerificationToken(token); ... } } (and whether I should be rolling my own user verification system is another issue altogether, we are in the process of adopting MS's membership framework. I'm more interested in sql injection and RIA services in general)

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  • What's all the hype over objectsets?

    - by Kohan
    I am an intermediate user of EF in .net 3.5 and have recently moved to working with .net 4. One think i keep coming across when reading various tutorials is the use of ObjectSets instead of ObjectQuerys and that they are a great new feature. What is so great about them? Reading this MSDN article titled "Working with ObjectSet (Entity Framework)" It shows two examples for on how to add a Product.. one for 3.5 and another for 4.0. http://msdn.microsoft.com/en-us/library/ee473442.aspx Though my lack of knowledge I am possibly bringing up a seperate point here, but i never added a Product like this: //In .NET Framework 3.5 SP1, use the following code: using (AdventureWorksEntities context = new AdventureWorksEntities()) { // Add the new object to the context. context.AddObject("Products", newProduct); } I would have just used context.AddToProducts(newProduct); Please enlighten me. Kind regards, Kohan

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  • Bind Data after TCP receive.

    - by gtas
    I have this strange problem all day now. I dunno if you handled something similar. I used two different serializers and now i know its not this problem. Im sending some data over TCP Sockets. Serialize - Send - Deserialize, everything works ok, i can get my objects search through them, use they're properties! But, if e.g receive a BusinessObject[] and convert into List<BusinessObject>, then bind the list in a Control.DataSource = businessObjectList; BOOM! NotSupportedException. Tried it with 3 different controls. Same behaviour. My head is empty of ideas right now!! The Send TCP happens on Desktop Framework, Receive on Compact Framework. But i dont think this has to do with anything. I wish for an explanation on this!

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  • ASP.Net Layered app - Share Entity Data Model amongst layers

    - by Chris Klepeis
    How can I share the auto-generated entity data model (generated object classes) amongst all layers of my C# web app whilst only granting query access in the data layer? This uses the typical 3 layer approach: data, business, presentation. My data layer returns an IEnumerable<T> to my business layer, but I cannot return type T to the presentation layer because I do not want the presentation layer to know of the existence of the data layer - which is where the entity framework auto-generated my classes. It was recommended to have a seperate layer with just the data model, but I'm unsure how to seperate the data model from the query functionality the entity framework provides.

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  • Same data being returned by linq for 2 different executions of a stored procedure?

    - by Paul
    Hello I have a stored procedure that I am calling through Entity Framework. The stored procedure has 2 date parameters. I supply different argument in the 2 times I call the stored procedure. I have verified using SQL Profiler that the stored procedure is being called correctly and returning the correct results. When I call my method the second time with different arguments, even though the stored procedure is bringing back the correct results, the table created contains the same data as the first time I called it. dtStart = 01/08/2009 dtEnd = 31/08/2009 public List<dataRecord> GetData(DateTime dtStart, DateTime dtEnd) { var tbl = from t in db.SP(dtStart, dtEnd) select t; return tbl.ToList(); } GetData((new DateTime(2009, 8, 1), new DateTime(2009, 8, 31)) // tbl.field1 value = 45450 - CORRECT GetData(new DateTime(2009, 7, 1), new DateTime(2009, 7, 31)) // tbl.field1 value = 45450 - WRONG 27456 expected Is this a case of Entity Framework being clever and caching? I can't see why it would cache this though as it has executed the stored procedure twice. Do I have to do something to close tbl? using Visual Studio 2008 + Entity Framework. I also get the message "query cannot be enumerated more than once" a few times every now and then, am not sure if that is relevant? FULL CODE LISTING namespace ProfileDataService { public partial class DataService { public static List<MeterTotalConsumpRecord> GetTotalAllTimesConsumption(DateTime dtStart, DateTime dtEnd, EUtilityGroup ug, int nMeterSelectionType, int nCustomerID, int nUserID, string strSelection, bool bClosedLocations, bool bDisposedLocations) { dbChildDataContext db = DBManager.ChildDataConext(nCustomerID); var tbl = from t in db.GetTotalConsumptionByMeter(dtStart, dtEnd, (int) ug, nMeterSelectionType, nCustomerID, nUserID, strSelection, bClosedLocations, bDisposedLocations, 1) select t; return tbl.ToList(); } } } /// CALLER List<MeterTotalConsumpRecord> _P1Totals; List<MeterTotalConsumpRecord> _P2Totals; public void LoadData(int nUserID, int nCustomerID, ELocationSelectionMethod locationSelectionMethod, string strLocations, bool bIncludeClosedLocations, bool bIncludeDisposedLocations, DateTime dtStart, DateTime dtEnd, ReportsBusinessLogic.Lists.EPeriodType durMainPeriodType, ReportsBusinessLogic.Lists.EPeriodType durCompareToPeriodType, ReportsBusinessLogic.Lists.EIncreaseReportType rptType, bool bIncludeDecreases) { ///Code for setting properties using parameters.. _P2Totals = ProfileDataService.DataService.GetTotalAllTimesConsumption(_P2StartDate, _P2EndDate, EUtilityGroup.Electricity, 1, nCustomerID, nUserID, strLocations, bIncludeClosedLocations, bIncludeDisposedLocations); _P1Totals = ProfileDataService.DataService.GetTotalAllTimesConsumption(_StartDate, _EndDate, EUtilityGroup.Electricity, 1, nCustomerID, nUserID, strLocations, bIncludeClosedLocations, bIncludeDisposedLocations); PopulateLines() //This fills up a list of objects with information for my report ready for the totals to be added PopulateTotals(_P1Totals, 1); PopulateTotals(_P2Totals, 2); } void PopulateTotals(List<MeterTotalConsumpRecord> objTotals, int nPeriod) { MeterTotalConsumpRecord objMeterConsumption = null; foreach (IncreaseReportDataRecord objLine in _Lines) { objMeterConsumption = objTotals.Find(delegate(MeterTotalConsumpRecord t) { return t.MeterID == objLine.MeterID; }); if (objMeterConsumption != null) { if (nPeriod == 1) { objLine.P1Consumption = (double)objMeterConsumption.Consumption; } else { objLine.P2Consumption = (double)objMeterConsumption.Consumption; } objMeterConsumption = null; } } } }

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  • .NET Compact COM interoperability

    - by markhor
    I have the following code in a full .NET framework solution: public delegate int CreateObjectDelegate( [In] ref Guid classID, [In] ref Guid interfaceID, [MarshalAs(UnmanagedType.Interface)] out object outObject); ... var createObject = (NativeMethods.CreateObjectDelegate) Marshal.GetDelegateForFunctionPointer( NativeMethods.GetProcAddress(_modulePtr, "CreateObject"), typeof (NativeMethods.CreateObjectDelegate)); object result; Guid interfaceId = _guid; Guid classID = _classId; createObject(ref classID, ref interfaceId, out result); The purpose is to create the needed COM object at runtime. Is it possible with any .NET compact framework? Note that it doesn't have Marshal.GetDelegateForFunctionPointer.

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