CslaContrib

MyCsla on CslaContrib

JonnyBee — Wed, 02 Sep 2009 16:55:56 GMT

Hi folks,

I've just put MyCsla for 3.6.3 and never (also 3-6-3-N2) on the CslaContrib site. http://cslacontrib.codeplex.com

The purpose is to give a combined Best Practice and extension points where we can all contribute with utility/helper classes, validation rules, components and more.

Best Practice
As a lot of you already has done - I have added my own baseclasses with extension points for logging/trace and a small sample of how to add/alter functionality without making modifications to Csla itself.

As for usage - I prefer to add this project as part of my solution as this make it easier to extend Csla inside my app and make all my BOs inherit from these baseclasses.

Also included are:
Validation Rules

Generic (IComparable) rules for GreaterThan, GreaterThanOrEqual, LessThan, LessThanOrEgual that compares two property values

Custom Windows Controls

StatusBarExtender with my implementation of wait animation and an animated splash after 2 seconds.
SmartDateTimePicker - also accepts text input like +, -, t, y (all these texts are defines in Csla resources and translated)
BindableRadioButtons - Radio buttons that support databind, typically for use with 2-5 items
ErrorWarnInfoProvider - Slightly reworked version of the one already available on CslaContrib

And a sample app that demonstrates the custom windows controls.

The namespace is simply MyCsla and uses the same folder names as Csla. To download the code goto the Source Code tab and select Download.

I am posting this message on both the Csla.Net dicussions and CslaContrib discussion. Please post reponses concerning code/submissions in the CslaContrib forum.

I have volunteered to step up as overall coordinator of the CslaContrip and hope that we can tune up on more activity in this project. If you want to share som code/classes please join codeplex and send me info (as per home page on the project) or send me email with info about your code and I can post it.

Pleas note: The CslaContrib project uses the Creative Commons Attribution 2.5 license.

Hope you find this useful and want to contribute more code.

/jonnybee

Why there is no post

niijyeni — Wed, 29 Jul 2009 21:19:45 GMT

Why there is no post??

Domain Specific Language (DSL) for CSLA

Allann — Tue, 10 Apr 2007 06:06:42 GMT

Hi,

Is there anyone out there that has looked at this new technology and thought about creating a DSL for CSLA? Rocky, any thoughts!

How cool would it be to be able to design full CSLA objects in the Visual Studio designer in the same way that you use the normal class designer!

Just wondering as I am about to start playing with it instead of using CodeSmith (I find it frustrating).

Regards

Allan

CslaXml using DTOs and not DB

stepwise — Mon, 09 Mar 2009 13:08:58 GMT

Hey there,

I am new to CSLA. I would like to leverate the CslaXml template for generating my business objects.

Basic tech design is as follows:

Data Layer consists of Data Objects that are managed using NHibernate.

Business Layer consists of Business Objects using CSLA Framework.

I am looking for some resources to better understand the MySample.xml structure and to know what my options are for generating a template.

The key difference is that my objects will be populated by obtaining Data Transfer Objects from the Data Layer rather than hitting a database.

If anyone can offer instruction (or where to find it) I would be most grateful.

Thanks!

Richard

Codeplex - CSLA Contrib & development

rfcdejong — Fri, 20 Feb 2009 17:13:03 GMT

First of all, i want to ask if this the correct place for starting a discussion about Codeplex? I know codeplex has a discussion place, but maybe there is some internal discussion possible.

Who of the following people is still active?
link: http://www.codeplex.com/CSLAcontrib/People/ProjectPeople.aspx

Allann
BrianCriswell
chrislw77
DaveRicker
DavidDilworth
davidwendelken
jtwebman
kdubious
KKoteles
Mobile5Guy
mtavares
pwelter34
rfcdejong
RichMark
RickySupit
TomCooley
Vinodonly
wcm777
xal1983

I also noticed the following projects:

CodeGenTemplates
Csla2Extensions
CslaContrib
CslaVSTemplates
ErrorTreeView
Example.Utility
ProjectTrackerNHibernate

I was thinking about creating an CslaContrib 3.6 version. Maybe i shouldn't do it all alone, but together with some other developers. I'll start wth the Smartxxx classes.

Currently i'm able to connect with codeplex using Team Foundation Server Explorer and that works fine. Even the workitems are available for me :)

System.Exception: Unique Column(s) is required.

gregwilliams — Thu, 17 Aug 2006 22:16:01 GMT

not sure if this is the correct spot to post this so forgive me if it is not.

I am trying to use codesmith to generate an 'EditableRoot' or any 'Root' class based on a stored proc.and i keep getting this error. I have downloaded the new 9.5 codetemplate files and i am using a trial version of codesmith.

this is a proc that is currently being used and works fine outside of codesmith. Also, there is a primary key set in the database. I even changed the key to 'uniqueidentifier' in the hopes that it would work, but no luck. I have also tried adding all the columns returned in the proc within the "uniqueColumnNames' filed.

I have recreated the PTracker datascheme and i do not get this error when running against those Procs.

Anyone have any idea's????

A NetSqlAzMan example of ProjectTracker

skaue — Fri, 08 Jun 2007 08:05:57 GMT

Wouldnt it be cool with a NetSqlAzMan example of ProjectTracker? Has anyone looked into that before?

ProjectTracker.NHibernate and NHibernate v1.2

fernandoacorreia — Thu, 18 Oct 2007 10:05:03 GMT

I found DavidDilworth's excellent ProjectTracker.NHibernate project on CodePlex and I'm planning to use its framework on my next project.

I wonder if anyone has upgraded NHibernate support for CSLA to version 1.2 of NHibernate.

If anyone could share some information on this, I'd appreciate. I plan on upgrading the current ProjectTracker.NHibernate (May 3 at 6:30 AM) to NHibernate 1.2 and post it back on CodePlex.

I'd specially like to hear what David thinks about this.

Thanks and best regards.

Fernando.

HELP: what is best report writer for remoting reports within CSLA framework

john_t — Fri, 11 Jul 2008 03:05:19 GMT

I have been able to find 'problems' on the internet using Crystal Reports and Report Viewer for remoting reports within the CSLA framework, but I didn't find a clear success story on either. I would really like to read a discussion between experienced programmers on this issue, before I spend hundreds of hours going in the wrong direction.

PLEASE tell me which, if any, writer to use if I intend to take advantage of the CSLA frameworks remote reporting features. I think this thread could be helpfull to a lot of people, as Google couldn't even provide samples after hours of searching.

Total Record Count

Zafar Ullah — Wed, 02 Jul 2008 17:05:05 GMT

Hello,

I am using CSLA.NHibernate from CSLA Contrib.

I am using CSLA version 3.0.4.0 and CSLA.NHibernate version is compiled using the same version of CSLA and my application is web based(ASP.NET with C#)

I have a huge number of records to display in our database e.g over 20 million and above in some tables rest of them are under 1 lac. I hav implemented paging and a max of 100 records can be shown displayed in a grid at 1 time.

Actually what we do is we send call to Collection class to load all records which meet under certain search criteria and take its count. like this

AMCollection.GetAMCollection(crit).Count

In background NHibernate make objects of all records e.g 1million and then we have a count. which make web page response very slow over 30 sec.

Is there any way to take the total count with out making objects of each record that NHibernate pulls.

Thanks in advance

Zafar Ullah

New feature request to support multiple remote data portals.

boo — Sun, 09 Mar 2008 04:02:27 GMT

Often in shops such as mine you're left in a situation where you're string together lots of already written assemblies to make a final product. Case in point in my current project.

We have a security framework that uses CSLA at it's core. (A)
We have a library that is a mix of legacy DTO's (prior to us incorporating CSLA) and CSLA objects. (B)
We have a library that is pure CSLA for working with another core system in the company. (C).

We DON'T want applications that use (A) to ever use the assembly in 'local portal' mode - we insist that they use the remote data portal and point to a particular server where we keep the security database, hash type, etc - we don't want every Tom, ***, and Sally knowing what that assembly hits on the remote machine. This information is living on a remote portal that most developers don't have access to gives people a sense of security.

Currently (C) is going to be upgraded because of performance reasons so that all applications that use (C) have to use remote data portal where the remote data portal has a lot closer access to the system it communicates with. THIS IS NOT THE SAME LOCATION WHERE (A) IS.

(B) has been and always will use the local data portal because of reasons too long to get into.

So individually these requirements aren't a problem, until your application has to use assemblies A, B, and C. Currently CSLA either has remote data portal at X location or it uses local data portal.

I'll will do this on my own if need be, but I think this feature would benifit the entire community, be a nice feature for CSLA overall, and you guys could implement it a lot quicker and BETTER than I could.

I would like to see a client configuration section for the client data portal. This would be optional and by default the data portal would work using the appSettings as it always has (for backwards compatability). If this configuration section is present on the client though, the appSettings are ignored.

The configuration section would basically map what assembly goes to what remote data portal, for example:

<csla.client>
    <dataportal>
         <assembly name="Assembly, Version=1.0.0.0, PublicKeyToken=null, Culture=neutral"
                  proxy="Csla.DataPortalClient.RemotingProxy, Csla"
                  url="http://somehost/RemotingHost/RemotingPortal.rem" />
         <assembly name="Assembly, Version=2.1.4.0, PublicKeyToken=null, Cuture=netural"
                  proxy="Csla.DataPortalClient.RemotingProxy, Csla"
                  url="http://someOtherHost/RemotingHost/RemotingPortal.rem" />
         
        <assembly name="Assembly, Verision=1.0.0.0, PublicKeyToken=null, Cutlture=neutral"
                 useLocalPortal="true" />
    </dataportal>
</csla.client>

This also infers that one assembly communicating to remote location Y could also communicate with location Z through enterise services - they don't all have to be the same type of server portal proxy.

Thoughts?

ProjectTracker.NHibernate And Wcf DataPortal

lonely7345 — Wed, 30 Jan 2008 15:27:26 GMT

I found DavidDilworth's excellent ProjectTracker.NHibernate project on CodePlex and I try to use its framework on my project.at the same time I use Wcf DataPortal In this projtect.but it's not successful .

the mode what i use wcf dataportal is same to the demo PTWeb

the error is .

Csla.DataPortalClient.WcfProxy

WcfResponse response =
svr.Create(new CreateRequest(objectType, criteria, context));

erver stack trace:
   在 System.Collections.Hashtable.get_Item(Object key)
   在 NHibernate.Impl.SessionFactoryObjectFactory.GetNamedInstance(String name)
   在 NHibernate.Impl.SessionFactoryImpl.GetRealObject(StreamingContext context)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContext.GetRealObject(IObjectReference obj, Int32 id)
   在 ReadSessionFactoryImplFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] )
   在 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContext.ReadDataContractValue(DataContract dataContract, XmlReaderDelegator reader)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(XmlReaderDelegator xmlReader, Type declaredType, String name, String ns)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContext.ReadSerializationInfo(XmlReaderDelegator xmlReader, Type type)
   在 ReadSessionImplFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] )
   在 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContext.ReadDataContractValue(DataContract dataContract, XmlReaderDelegator reader)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(XmlReaderDelegator xmlReader, Int32 declaredTypeID, RuntimeTypeHandle declaredTypeHandle, String name, String ns)
   在 ReadCriteriaImplFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] )
   在 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContext.ReadDataContractValue(DataContract dataContract, XmlReaderDelegator reader)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(XmlReaderDelegator xmlReader, Int32 declaredTypeID, RuntimeTypeHandle declaredTypeHandle, String name, String ns)
   在 ReadArrayOfPurchaseOrderMasterInfoFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] )
   在 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContext.ReadDataContractValue(DataContract dataContract, XmlReaderDelegator reader)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(XmlReaderDelegator xmlReader, Int32 declaredTypeID, RuntimeTypeHandle declaredTypeHandle, String name, String ns)
   在 ReadDataPortalResultFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] )
   在 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContext.ReadDataContractValue(DataContract dataContract, XmlReaderDelegator reader)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(XmlReaderDelegator xmlReader, Int32 declaredTypeID, RuntimeTypeHandle declaredTypeHandle, String name, String ns)
   在 ReadWcfResponseFromXml(XmlReaderDelegator , XmlObjectSerializerReadContext , XmlDictionaryString[] , XmlDictionaryString[] )
   在 System.Runtime.Serialization.ClassDataContract.ReadXmlValue(XmlReaderDelegator xmlReader, XmlObjectSerializerReadContext context)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContext.ReadDataContractValue(DataContract dataContract, XmlReaderDelegator reader)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserializeInSharedTypeMode(XmlReaderDelegator xmlReader, Int32 declaredTypeID, Type declaredType, String name, String ns)
   在 System.Runtime.Serialization.XmlObjectSerializerReadContextComplex.InternalDeserialize(XmlReaderDelegator xmlReader, Type declaredType, String name, String ns)
   在 System.Runtime.Serialization.NetDataContractSerializer.InternalReadObject(XmlReaderDelegator xmlReader, Boolean verifyObjectName)
   在 System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(XmlReaderDelegator reader, Boolean verifyObjectName)
   在 System.Runtime.Serialization.NetDataContractSerializer.ReadObject(XmlDictionaryReader reader, Boolean verifyObjectName)
   在 System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.DeserializeParameterPart(XmlDictionaryReader reader, PartInfo part, Boolean isRequest)
   在 System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.DeserializeParameter(XmlDictionaryReader reader, PartInfo part, Boolean isRequest)
   在 System.ServiceModel.Dispatcher.DataContractSerializerOperationFormatter.DeserializeBody(XmlDictionaryReader reader, MessageVersion version, String action, MessageDescription messageDescription, Object[] parameters, Boolean isRequest)
   在 System.ServiceModel.Dispatcher.OperationFormatter.DeserializeBodyContents(Message message, Object[] parameters, Boolean isRequest)
   在 System.ServiceModel.Dispatcher.OperationFormatter.DeserializeReply(Message message, Object[] parameters)
   在 System.ServiceModel.Dispatcher.ProxyOperationRuntime.AfterReply(ProxyRpc& rpc)
   在 System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)
   在 System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   在 System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs)
   在 System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   在 System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]:
   在 System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   在 System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   在 Csla.Server.Hosts.IWcfPortal.Fetch(FetchRequest request)
   在 Csla.DataPortalClient.WcfProxy.Fetch(Type objectType, Object criteria, DataPortalContext context) 位置 E:\DCMS\Product\Project\EbChainSolution\Csla\DataPortal\Client\WcfProxy.cs:行号 90
   在 Csla.DataPortal.Fetch(Type objectType, Object criteria) 位置 E:\DCMS\Product\Project\EbChainSolution\Csla\DataPortal\Client\DataPortal.cs:行号 203
   在 Csla.DataPortal.Fetch[T](Object criteria) 位置 E:\DCMS\Product\Project\EbChainSolution\Csla\DataPortal\Client\DataPortal.cs:行号 156
   在 EbChain.BusinessObject.PurchaseOrderMasterList.GetPurchaseOrderList() 位置 E:\DCMS\Product\Project\EbChainSolution\EbChain.BusinessObject\PurchaseOrderMasterList.NH.cs:行号 89
   在 EbChain.Web.BLL.PurchaseOrder.GetList() 位置 E:\DCMS\Product\Project\EbChainSolution\EbChain.Web.BLL\PurchaseOrder.cs:行号 41
   在 ConsoleApplication1.Program.Main(String[] args) 位置 E:\DCMS\Product\Project\EbChainSolution\ConsoleApplication1\Program.cs:行号 10
   在 System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
   在 System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   在 Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   在 System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   在 System.Threading.ThreadHelper.ThreadStart()

Add ObjectAdapterTyped class to CSLA?

alancaster — Thu, 17 Jan 2008 23:24:27 GMT

In writing reports that get their data from a CSLA business object, the ObjectAdapter class will take in a CSLA object and return a DataSet of all String types that you can use to bind to the report.

The problem with this is you loose a lot of functionality in the report because all the types are Strings, so if you write formulas inside the report to do number or date math, you need to do a bunch of grungy type conversions to get the report formulas to work correctly.

To get around this problem, you need a DataSet that preserves the correct field types from the original CSLA object, so I developed an "ObjectAdapterTyped" class to handle this.

Would it be possible to shared this class and possibly have it added to the CSLA distribution?

Thank You.

Alex

ObjectListView and Filtering Dates???

David Wendelken — Wed, 02 Jan 2008 15:05:06 GMT

Per Rocky's advice, my business objects have public string properties for EffDate and ObsDate (EffectiveDate and ObsoleteDate) although the private variables are SmartDates.

I'm trying to filter on these values using ObjectListView and having a bit of trouble.

My Filter expression is:

EffDate >= #1/1/2002# AND EffDate <= #12/31/2004#

I get this error message:

Cannot perform '>=' operation on System.String and System.DateTime.

How are other folks handling this? I'm looking for best practice here. :)

Data Binding

demwa — Mon, 03 Dec 2007 10:15:00 GMT

I am developing an Human Resources and payroll system.I have created an employee object which can be of four types contract employee,Permanent employee,temporal employee and expariate.I want to be able to change an employee from one type to another type of employee.I have created a polymorphic child object called EmployeeType which can be of any of the types mentioned above.on the employees form i have put a combobox which is bound to the employeetype namevalue list.When I select any options in the combobox a new type of child if the employee type is differennt from the current employee type is created.However the the bound text boxes are not updated to reflect the initial values of the newly created child object of the employee.For example both the temporal employee and contract employee types have the startdate and enddate properties to reflect the start and expiry of the contracts/temporal assignement.When I change a temporal employee to contract employee the startdate and enddate continue to reflect the same startdate and enddate properties of the temporal employee and if save the objects to the database only the employeeid is inserted into the database,startdate and enddate are null.my code snippets are show below .Can someone help me

InitializeComponent()

mEmployee = Employee

mEmployee.BeginEdit()

Me.EmployeeBindingSource.DataSource = mEmployee

Me.EmployeeTypeListBindingSource.DataSource = Payroll.Library.EmployeeTypeList.GetList

Me.EmployeeListBindingSource.DataSource = Payroll.Library.EmployeeList.GetEmployeeList

Me.TabPage1.Select()

With ComboBox1

.DataSource = Payroll.Library.EmployeeTypeList.GetList

.DisplayMember = "Name"

.ValueMember = "Value"

.DataBindings.Add("SelectedValue", mEmployee, "Type")

.DataBindings(0).DataSourceUpdateMode = DataSourceUpdateMode.OnPropertyChanged

End With

With Me.TextBox1

.DataBindings.Add("Text", mEmployee.EmployeeType, "StartDate")

End With

Employee Object

Private Sub SetEmployeeType(ByVal ID As Integer)

OldEmployeeType = mEmployeeType

mOldEmployeeType.Delete()

mEmployeeType = EmployeeTypeFactory.NewEmployeeType(ID)

End Sub

Public Property Type() As String

Get

Return mTypeList.Value(mType)

End Get

Set(ByVal value As String)

If mType <> mTypeList.Key(value) Then

mType = mTypeList.Key(value)

SetEmployeeType(mType)

PropertyHasChanged()

End If

End Set

End Property

AuthorisationRules in C#

carnivore — Tue, 20 Nov 2007 13:52:36 GMT

Hello,

my problem is the following. I want to disable some properties at some objects.
therefor I use AuthorizationRules.InstanceDenyWrite(propertyname, role);
The properties are disabled, all fine.

now I want to enable this properties at the runtime.

How is it possible?

sorry for my bad english
regards, roman

Fixed size editable list

boo — Thu, 01 Nov 2007 02:30:19 GMT

I've recently come across this a couple of times:

The use case is that you have a list of items that is configurable by administrator, say a question answer list where the admin enters questions and the user enters answers.

One way to solve this is the traditional, open a single question as an editable item, then provide an answer. However when the user has 50 items, this isn't friendly, especially if the answers are yes/no or simple one or two letter word answers. Sometimes you just want to see the whole list and provide answers to each question. A dictionary won't work because you can't detect when items are added or deleted or changed.

So the problem is that you want a list where you can edit the items themselves (or at least one of the properties, some may be read-only), but you don't want to allow developers to add or remove items from the list of items itself.

The answer I came up with was simply to use the normal editable list (because the child objects are editable and you need to detect changes, it can't be a read only list), but I added a field so that the business object couldn't have items deleted or added (except when done internally as part of a Fetch method). To do this I added a boolean _isFixed field that is initially set to true and I overrode the AddNewCore and RemoveItem to throw a not supported exception if the _isFixed is currently set to true. When I'm in the Fetch method adding objects to the list I simply change the _isFixed to false at the begining of the method and back to true at the end; similiar to the call to RaiseListChangedEvents and such.

I'd like to see in 3.1 or 3.5 a new business object and template that is basically a formal implementation of this. Basically it's the editable list with this extra field and shouldn't be a big deal to implement.

Hope this sounds as good of an idea to everyone else as it does me.

Clsa Nhiberate working example needed

dotnetbrix — Wed, 19 Sep 2007 13:01:42 GMT

Hi,

I am new to NHibernate and I have noticed that there is a version of CSLA that integrates with NHibernate.

Is there a working example somewhere or if somebody is willing to share one?

I dont think there are any mapping files either?

Again I am new to Nhibernate so I might be wrong.

Thanks again

Cached lists

eDjinn — Thu, 13 Sep 2007 14:13:08 GMT

Using the Codesmith templates (based CSLA2.x CS 1.1.0 RC), I like the choice I have generating a single, SplitPartial of SplitBase class.
What we use a lot in our code, is static lists (that is: lists that don't change a lot, like storage places in a a warehouse.
Maybe I can suggest a change here in the templates:

ReadOnlyRootList and ObjectFactoryMethods:

private static _cachedList = null;
public static (bool useCache 0) { %>, )
(...)
if (_cachedList == null || !useCache)
_cachedList = DataPortal.Fetch>(new FilterCriteria());
return _cachedList;

EditableRootList:

protected override void DataPortal_Update()
(...)
_cachedList = null;
RaiseListChangedEvents = true;

Using these changes, most lists will be cachable by choise.

Any comments?

Problem with the NHibernate example of ProjectTracker

skaue — Fri, 08 Jun 2007 10:58:11 GMT

We are having problems getting the NHibernate example to run on the latest version of NHibernate (1.2x). Is the example on CSLAContrib incompatible with NHibernate 1.2?

Another question to David; what is the prupose of the code in Interfaces namespace (foldername Interfaces)?

How many people are using SmartInt16, SmartInt32, etc?

David Wendelken — Wed, 08 Aug 2007 19:08:32 GMT

Out of curiosity, are you using any of the various Smart* classes available here?

If not, why not?

Problem generating from XML

wjcomeaux — Wed, 01 Aug 2007 16:07:54 GMT

Hello again everyone:

We recently upgraded to a new version of Codesmith (the current latest). Now, when I try to generate my code from XML I am getting an error that I posted about last year. However, the fix that I found last year isn't working this time. The old post is at: http://forums.lhotka.net/forums/thread/9362.aspx

The actual error message I am getting is "Error Rendering AccessRequestER: Unique Column(s) is required."

Below is the XML Node that I am trying to generate from. I had an XSD for validation from a year ago, has a new one been released or has anyone else encountered this issue?

Thanks, Will

</ValidationRules>

</Property>

</ValidationRules>

</Property>

</Properties>

<PropertyAuthorization>Write</PropertyAuthorization>

<AuthorizationRules>false</AuthorizationRules>

<FetchCommand Type="StoredProcedure">AccessRequestER_Fetch</FetchCommand>

<InsertCommand>AccessRequestER_Insert</InsertCommand>

<UpdateCommand>AccessRequestER_Update</UpdateCommand>

<DeleteCommand>AccessRequestER_Delete</DeleteCommand>

</DbCommands>

</Object>

Updated ObjectListView available

Brian Criswell — Thu, 21 Dec 2006 22:43:25 GMT

I have published a new version of the ObjectListView to the CSLAcontrib site.

New features/fixes:

Improved filtering speed
Fixed index returned by ListChanged event when adding an item to a filtered list
Improved detection of underlying object type

CSLA Rewrite

tymberwyld — Thu, 21 Jun 2007 13:34:09 GMT

I have rewritten the DataPortal classes to decrease the amount of objects needed for Data Access. I've been using this for about 8 months now with no issues. I'm pretty sure it will plug-in nicely with everything else in CSLA, but at this point, I have gone so far beyond CSLA that it might take some tweaking.

I got kind of tired of the Client vs. Server objects needed for DataPortals. It's not really necessary. Also, the DataAccess code had to be duplicated is all business objects and all business objects had to absolutely know what type of database was behind the scenes (Sql, Oracle, Access, etc.). I have rewritten all base business classes and data access. The DataPortal acts as a portal of communication as well a Data Access surrogate. There is absolutely know data access code written in any business objects.

Here's the breakdown...

DataPortalFactory - handles initializing the correct type of DataPortal needed for the Application. Simply add an <appSettings> element: <add key="DataPortal" value="..." />.

Possible DataPortal types to put into the value are:

Local, localhost, etc.
Remoting Channel Url to the remotely hosted DataPortal: tcp://localhost:8080/DataPortal.rem
WebService Url to the remote DataPortal: http://localhost:4027/DataPortal.asmx
WCF: whatever the connection looks like for it - still in development

The classes needed to create DataPortals are greatly simplified. Simply derive a class from IDataPortal. There are two classes currently: 1.) DataPortal (which is used for both local and Remoting), and 2.) WebDataPortal which can be run as a WebService. There is absolutely NO CODE required for the WebService! Just create a new WebService project, add a Reference to the Dll, delete all code-behind files and replace the "Inherits" attribute of the WebService to point to the class in the Dll.

IDataPortal - provides an interface which all DataPortals must implement
DataPortal - Inherits from MarshalByRefObject and provides Local and Remoting Channel objects
WebDataPortal - Inherits from a WebService and implements IDataPortal.
WebDataPortalProxy - this is the only Proxy class needed and is only used for the WebDataPortal. This may be able to become more generic to support multiple remote "Proxies", for example, WebService and WCF proxies may be able to be combined into one.
WCFDataPortal - in progress...
DataPortalContext - rewritten to support specifying which "connection" and data provider (System.Data.SqlClient vs. System.Data.OleDbProvider).

Here are some of the advantages:

There is no need for complicated config file settings.
Multiple Databases are supported through "context switching", meaning you can have multiple <connectionString> sections and the business objects can set the DataPortalContext before data access code is called.
DataPortals are not passed into business objects, rather, Business Objects are passed into DataPortals. All Business Objects derive from IUpdateableObject.
There's no need for RunLocalAttributes or anything. The DataPortal does not need to be location aware.

Disadvantages:

I still need to ensure that the DataPortal will function correctly with ServiceComponents and Transactions.

There are many other advantages to my library, it's almost a complete rewrite of CSLA but more simplified. It includes DataMapping / ORM Mapping, Validation Rules, Strongly-Typed Business DataSet objects, simplified DataPortals, and Cryptography support (including an EncytableAttribute class which can be applied to any Property that needs encryption - and you can specify different ways to encrypt different properties).

I like using Strongly-typed DataTable, DataRows, and DataSets for business objects as well as sometimes using Business Object Classes themselves. So, I have provided easy to use base classes for BusinessDataTable, BusinessDataRow, and BusinessDataSet. These classes use Generics to simplify all the code so that derived classes only need to implement what DataColumns are needed.

Once I cleanup the code a bit more, I'll submit it if anyone is interested. I am currently making it Framework 3.0 compatible.

MyGeneration CSharp Templates

RichMark — Wed, 13 Jun 2007 14:57:25 GMT

I've placed some MyGeneration CSharp Templates on CSLAcontrib.

They include support for:

* ForeignKeys including Parent/Child relationships.

* propertygrid.

* Lazy Loading of related data

* Other items.

I've also included a sample application for the Northwind database. This consists of a listbox to select an employee, and a propertygrid of all information related to the employee. The data is editable in the propertygrid.