Monthly Archives

Articles indexed in April 2010

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 857/3251 | < Previous Page | 853 854 855 856 857 858 859 860 861 862 863 864  | Next Page >

  • Service Layer Patter - Could we avoid the service layer on a specific case?

    - by lidermin
    Hi, we are trying to implement an application using the Service Layer Pattern cause our application needs to connect to other multiple applications too, and googling on the web, we found this link of a demostrative graphic for the "right" way of apply the pattern: martinfowler.com - Service Layer Pattern But now we have a question: what if our system needs to implement some business logic, only for our application (like some maintenance data for the system itself) that we don't need to share with other systems. Based on this graphic: As it seems, it will be unnecesary to implement a service layer just for that; it will be more practical to avoid the service layer, and just go from User Interface to the Business Layer (for example). What should be the right way in this case to implement the Service Layer Pattern? What do you suggest us for a scenario like the one I told you? Thanks in advance.

    Read the article

  • jqgrid problem:Where is the "filter" param?

    - by davykiash
    Am curently looking at the jqgrid documentation on advanced search and specifically search_adv.php file that comes with it. I have noted the following line of code $searchstr = Strip($_REQUEST['filters']); However when I look at the output on firebug of my jqgrid post I see _search true nd 1270148130165 page 1 rows 10 searchField income_types_desc searchOper eq searchString 5 sidx income_types_desc sord asc Where on earth is the "filter" param?

    Read the article

  • GAE Entity Groups/Transaction

    - by bach
    Hi, Say you have a Client Buying Card object and a product object. When the client chooses the buy opition you create the object and then add a product. It should be transactional but it's not on the same entity group as the product and the card already been persisted, isn't it? Is there any way to overcome this simple scenario safely and easily? here's a code sample: Transaction tx = pm.currentTransaction(); tx.begin(); Product prod = pm.getObjectById(Product.class, "TV"); prod.setReserved(true); pm.makePersistent(prod); Card card = pm.getObjectById(Card.class, "user123"); /// <--- will thorw an exception as card and prod aren't on the same entity group card.setProd(prod); pm.makePersistent(card); try { tx.commit(); break; }

    Read the article

  • Cannot add table to context - LINQ-To-SQL

    - by Oskar Kjellin
    Hey, I'd be happy to give you more info if you need, just ask for it. I have in my database a table of articles, a table of tags and a link table. The article table has values like Id, Subject etc etc, the tags only have Id and Tag. The link has TagId and ArticleId. The problem is that when I drag drop the link-table nothing happens! This all worked before I decided to rename my column in the tables from "ID" to "Id" to correct spelling. Thanks in advance!

    Read the article

  • Help regarding composite pattern with hibernate

    - by molleman
    Hello, So i am stuck, i am creating a gwt web application, i will be using a tree(gwt Tree and TreeItems) structure to show a list of folders(class Folder) and files(class FileLocation), the folder and filelocation class will all implement a Hierarchy interface basing the classes on the composite pattern. but i am using hibernate to store my data , and i am using annotations for the mapping of the data to the database. my trouble is i do not know how to annotate my interface. have any of you guys used the composite pattern while persisting the data with hibernate public interface Hierarchy(){ // a few abstract methods that will be implemented by the sub classes } @Entity @Table() public class Folder extends Hierarchy implements Serializable { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "folder_id", updatable = false, nullable = false) private int id; @OneToMany(cascade = CascadeType.ALL,fetch = FetchType.EAGER) @JoinTable(name = "FOLDER_FILELOCATION", joinColumns = { @JoinColumn(name = "folder_id") }, inverseJoinColumns = { @JoinColumn(name = "file_information_id") }) private List<Hierarchy> children = new ArrayList<Hierarchy>() ; @Column(name = "folder_name") private String folderName; @Column(name = "tree_item") private TreeItem item; @Column (name = "parent") private Hierarchy parent; @Entity @Table(name = "FILE_INFORMATION_TABLE") public class FileInformation extends Hierarchy implements Serializable { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "file_information_id", updatable = false, nullable = false) private int fiId; @Column (name = "location") private String location; @Column(name = "tree_item") private TreeItem item; @Column (name = "parent") private Hierarchy parent;

    Read the article

  • Are memory barriers necessary for atomic reference counting shared immutable data?

    - by Dietrich Epp
    I have some immutable data structures that I would like to manage using reference counts, sharing them across threads on an SMP system. Here's what the release code looks like: void avocado_release(struct avocado *p) { if (atomic_dec(p->refcount) == 0) { free(p->pit); free(p->juicy_innards); free(p); } } Does atomic_dec need a memory barrier in it? If so, what kind of memory barrier? Additional notes: The application must run on PowerPC and x86, so any processor-specific information is welcomed. I already know about the GCC atomic builtins. As for immutability, the refcount is the only field that changes over the duration of the object.

    Read the article

  • SQL Server Analysis Services, DNS, AD, Kerberos, Connection Issues

    - by ScaleOvenStove
    Running into a very weird issue. Converting servers to Windows 2008/SQL 2008. Have a server, SERVER_A, brand new, setup with Win2k8,Sql2k8 - works. Have a Server SERVER_B, running Windows2003/SQL2005. I want to migrate from SERVER_B to SERVER_A. I have all db's, cubes, etc setup on SERVER_A and it is mimicking functionality. Since users are using Excel to connect to SSAS, they connection string has SERVER_B in it. What I want to do, is, change DNS on the network to point SERVER_B (by name) at the ip of SERVER_A. I have successfully done this with another server, SERVER_C, but I need to do it with SERVER_B. What I have found is that with SERVER_C, after changing DNS, had to remove SERVER_C from AD and then it worked. I could connect to SERVER_C (DB), SERVER_C (SSAS Default Instance) and SERVER_C (SSAS Named instance) and it all was actually connecting to SERVER_A I tried to do the same with with SERVER_B, and no luck. Changed DNS, removed from AD, and it wouldn't connect. Found out that there were some SPN's in AD set up, so removed those and tried again. I then could connect to SERVER_B (DB), SERVER_B (SSAS Named Instance), but not SERVER_B (SSAS Default Instance). I could connect to SERVER_B (SSAS Default Intance WITH the Port #), but I need to be able to connect without the port number. I am at a loss to as why I can't connect to the default instance without a port #. Not sure if it is SPN's in AD, or another AD issue, or something else. Pretty sure it isnt something on the server (because SERVER_C works!) Any insight or suggestions would be greatly helpful!!

    Read the article

  • Installing Windows 2003 over remote DRAC 4

    - by Delli
    I'm trying to install windows 2003 over a DRAC 4 console session by using a ISO file. But it keeps freezing during the GUI installation then when login back Windows Setup says some files not found and setup won't continue. What's the best approach to install Windows 2003 over a DRAC 4 console session?

    Read the article

  • Can't manage iPod from linux anymore

    - by kemp
    I used to be able to see and manage my iPod with different softwares: Amarok, Rhythmbox, GTKPod. The device is a nano 1st generation 4gb. Currently it mounts regularly and can be accessed from the file system, but I get this in dmesg: [ 1547.617891] scsi 11:0:0:0: Direct-Access Apple iPod 1.62 PQ: 0 ANSI: 0 [ 1547.619103] sd 11:0:0:0: Attached scsi generic sg2 type 0 [ 1547.620478] sd 11:0:0:0: [sdb] Adjusting the sector count from its reported value: 7999488 [ 1547.620494] sd 11:0:0:0: [sdb] 7999487 512-byte hardware sectors: (4.09 GB/3.81 GiB) [ 1547.621718] sd 11:0:0:0: [sdb] Write Protect is off [ 1547.621726] sd 11:0:0:0: [sdb] Mode Sense: 68 00 00 08 [ 1547.621732] sd 11:0:0:0: [sdb] Assuming drive cache: write through [ 1547.623591] sd 11:0:0:0: [sdb] Adjusting the sector count from its reported value: 7999488 [ 1547.624993] sd 11:0:0:0: [sdb] Assuming drive cache: write through [ 1547.625003] sdb: sdb1 sdb2 [ 1547.629686] sd 11:0:0:0: [sdb] Attached SCSI removable disk [ 1548.084026] FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive! [ 1548.369502] FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive! [ 1548.504358] FAT: invalid media value (0x2f) [ 1548.504363] VFS: Can't find a valid FAT filesystem on dev sdb1. [ 1548.945173] FAT: utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive! [ 1548.945179] FAT: invalid media value (0x2f) [ 1548.945182] VFS: Can't find a valid FAT filesystem on dev sdb1. [ 1610.092886] usb 2-6: USB disconnect, address 9 The only application that can access it (partially) is Rhythmbox. I say partially because I can transfer files to the iPod but can't remove or modify them. Also one transfer didn't finish and only 9 out of 16 songs were delivered to the device. All other softwares I tried (GTKPod, Amarok, Songbird) don't even detect it. What can I do to troubleshoot this? EDIT: # fdisk -l /dev/sdb Disk /dev/sdb: 4095 MB, 4095737344 bytes 241 heads, 62 sectors/track, 535 cylinders Units = cylinders of 14942 * 512 = 7650304 bytes Disk identifier: 0x20202020 Device Boot Start End Blocks Id System /dev/sdb1 1 11 80293+ 0 Empty Partition 1 has different physical/logical beginnings (non-Linux?): phys=(0, 1, 1) logical=(0, 1, 2) Partition 1 has different physical/logical endings: phys=(9, 254, 63) logical=(10, 181, 8) Partition 1 does not end on cylinder boundary. /dev/sdb2 11 536 3919415+ b W95 FAT32 Partition 2 has different physical/logical beginnings (non-Linux?): phys=(10, 0, 7) logical=(10, 181, 15) Partition 2 has different physical/logical endings: phys=(497, 240, 62) logical=(535, 88, 61) EDIT2: The "before" state is hard to tell, it was a lot of updates ago. Haven't been using my iPod for a while so I can't say when exactly it stopped working. I'm sure Amarok was still at version 1.X but can't remember when it was. My current system is debian testing fully updated. NOTE: just noticed that if I mount the device manually instead of letting nautilus automount it, I can see it again on GTKPod but still not on Banshee AND it's vanished from Rhythmbox...

    Read the article

  • EntityFramework EntityState and databinding along with INotifyPropertyChanged

    - by OffApps Cory
    Hello, all! I have a WPF view that displays a Shipment entity. I have a textblock that contains an asterisk which will alert a user that the record is changed but unsaved. I originally hoped to bind the visibility of this (with converter) to the Shipment.EntityState property. If value = EntityState.Modified Then Return Visibility.Visible Else Return Visibility.Collapsed End If The property gets updated just fine, but the view is ignorant of the change. What I need to know is, how can I get the UI to receive notification of the property change. If this cannot be done, is there a good way of writing my own IsDirty property that handles editing retractions (i.e. if I change the value of a property, then change it back to it's original it does not get counted as an edit, and state remains Unchanged). Any help, as always, will be greatly appreciated. Cory

    Read the article

  • Adding UIComponent to both Canvas and Tree in Flex 3

    - by Chris M
    I currently am trying to add a custom class which subclasses UIComponent to both a tree and a canvas, but when I try to re-order the tree by dragging I get this error: TypeError: Error #1010: A term is undefined and has no properties. at mx.controls::Tree/get firstVisibleItem()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\Tree.as:764] at flash.utils::ByteArray/writeObject() at flash.desktop::Clipboard/putSerialization() at flash.desktop::Clipboard/convertFlashFormat() at flash.desktop::Clipboard/setData() at mx.managers::NativeDragManagerImpl/doDrag()[C:\autobuild\3.2.0\frameworks\projects\airframework\src\mx\managers\NativeDragManagerImpl.as:282] at mx.managers::DragManager$/doDrag()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\managers\DragManager.as:243] at mx.controls.listClasses::ListBase/dragStartHandler()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\listClasses\ListBase.as:9085] at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.core::UIComponent/dispatchEvent()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:9298] at mx.controls.listClasses::ListBase/mouseMoveHandler()[C:\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls\listClasses\ListBase.as:8822] When I do not add the UIComponent to the canvas, this error does not occur, anyone have any knowledge as to why this happens?

    Read the article

  • IPython tab completion not working

    - by djpark121
    Tab completion on IPython seems not to be working. For example, import numpy numpy.<tab> simply adds a tab. import numpy num<tab> just adds a tab, too. Could you please suggest some possible causes for this problem? I am running Windows 7 and Python 2.6.5.

    Read the article

  • How to Access a decendant object's internal method in C#

    - by Giovanni Galbo
    I'm trying to access a method that is marked as internal in the parent class (in its own assembly) in an object that inherits from the same parent. Let me explain what I'm trying to do... I want to create Service classes that return IEnumberable with an underlying List to non-Service classes (e.g. the UI) and optionally return an IEnumerable with an underlying IQueryable to other services. I wrote some sample code to demonstrate what I'm trying to accomplish, shown below. The example is not real life, so please remember that when commenting. All services would inherit from something like this (only relevant code shown): public class ServiceBase<T> { protected readonly ObjectContext _context; protected string _setName = String.Empty; public ServiceBase(ObjectContext context) { _context = context; } public IEnumerable<T> GetAll() { return GetAll(false); } //These are not the correct access modifiers.. I want something //that is accessible to children classes AND between descendant classes internal protected IEnumerable<T> GetAll(bool returnQueryable) { var query = _context.CreateQuery<T>(GetSetName()); if(returnQueryable) { return query; } else { return query.ToList(); } } private string GetSetName() { //Some code... return _setName; } } Inherited services would look like this: public class EmployeeService : ServiceBase<Employees> { public EmployeeService(ObjectContext context) : base(context) { } } public class DepartmentService : ServiceBase<Departments> { private readonly EmployeeService _employeeService; public DepartmentService(ObjectContext context, EmployeeService employeeService) : base(context) { _employeeService = employeeService; } public IList<Departments> DoSomethingWithEmployees(string lastName) { //won't work because method with this signature is not visible to this class var emps = _employeeService.GetAll(true); //more code... } } Because the parent class lives is reusable, it would live in a different assembly than the child services. With GetAll(bool returnQueryable) being marked internal, the children would not be able to see each other's GetAll(bool) method, just the public GetAll() method. I know that I can add a new internal GetAll method to each service (or perhaps an intermediary parent class within the same assembly) so that each child service within the assembly can see each other's method; but it seems unnecessary since the functionality is already available in the parent class. For example: internal IEnumerable<Employees> GetAll(bool returnIQueryable) { return base.GetAll(returnIQueryable); } Essentially what I want is for services to be able to access other service methods as IQueryable so that they can further refine the uncommitted results, while everyone else gets plain old lists. Any ideas?

    Read the article

  • Custom cell just failing

    - by ct2k7
    Hi, I'm trying to use a custom UITableViewCell, and I've placed it in the same nib file as the UITableView controller. For this, the files are: NTItems.h, NTItems.m and NTItems.xib. I have defined the cell in the header file: IBOutlet UITableViewCell *cellview; and I've correctly applied the property: nonatomic, retain so it's there. In the m file - I've synthesized the variable device and am using this to get the custom cell: if(cell == nil){ cell = self.cellview; } However, when I load the table, I get this horrible mess: There should be more than 1 cell showing data as well. On another note, how do I map the labels to the text which is to be displayed?

    Read the article

  • Overriding deep functions in javascript

    - by PintSizedCat
    I'm quite new to javascript but have undertaken a task to get better aquainted with it. However, I am running into some problems with jQuery. The following javascript is the code that is in a third party jQuery plugin and I would love to be able to override the funFunction() function here to do my own implementation. Is this possible, if so, how can I do it? I've been doing a fair amount of searching and have tried a number of methods for overriding the function using things like: jQuery.blah.funFunction = funtion() { alert("like this"); }; Main code: (function($) { $.extend( { blah: new function() { this.construct = = function(settings) { //Construct... stuff }; function funFunction() { //Function I want to override } } }); })(jQuery); For those further interested I am trying to override tablesorter so that the only way a user can sort a column is in ascending order only. Edit: There is a wordpress installation that uses WP-Table-Reloaded which in turn uses this plugin. I don't want to change the core code for this plugin because if there was ever an update I would then have to make sure that my predecessor knew exactly what I had done. I've been programming for a long time and feel like I should easily be able to pick up javascript whilst also looking at jQuery. I know exactly what I need to do for this, just not how I can override this function.

    Read the article

  • Is there a way to capture a bitmap from a WPF window using native C++?

    - by Mike Caron
    Imagine a document window in a MDI application which contains a child WPF window, say a sidebar for example. How can one get a bitmap containing both the WPF pixels AND the GDI (non-wpf) pixels? I've discovered that when making my thumbnail preview for the Win7 taskbar app icon hover, I get black in the parts of the preview where the WPF pixels should be. My current method simply grabs a bitmap capture of the document window. Then I get a DC for the preview, make a memory DC from it and select my bitmap into it. Then I do some size adjustments and bitblt the memory dc to the real dc. I'm guessing that the BitBlt operation doesn't take into account the fact that the WPF pixels are hardware accelerated and therefore need to be grabbed from the graphics hardware. All the stuff in GDI is managed just fine, though and when there's no WPF child windows, the preview image looks fine. I'm wondering if it's at all possible to grab a bitmap of the WPF window from native C++. Then I can blt that onto the black area of the previous preview.

    Read the article

  • wcf possible to override the dipose of proxy

    - by pdiddy
    I'd like to override the Dispose method of generated proxy (ClientBase) because of the fact that disposing of a proxy calls Close and can throw an exception when the channel is faulted. The only way I came up was to create a partial class to my generatedproxy, make it inherit from IDisposable. : public partial class MyServiceProxy : IDisposable { #region IDisposable Members public void Dispose() { if (State != System.ServiceModel.CommunicationState.Faulted) Close(); else Abort(); } #endregion } I did some test and my Dipose method is indeed called. Do you see any issue with this strategy? Also, I don't like the fact that I'll have to create this partial class for every generated proxy. It be nice if I was able to make my proxy inherit from a base class...

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 853 854 855 856 857 858 859 860 861 862 863 864  | Next Page >