[gentle] working now, but found 2 bugs?
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[gentle] working now, but found 2 bugs?
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From: Thomas S. <th...@th...> - 2007-07-23 16:19:34
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Thanks, drazen.
The docs site was down otherwise I would have read that.
The MyGeneration Gentle2.0 template generates a class that inherits from
Entity. It appears that when Entity instantiates, it locks to a provider.
Am I correct in understanding that if I want the other data binding benefits
of inheriting from Entity (rather than just implementing IEntity), but
without the mandatory ProviderLock, I'll have to inherit from a customized
Entity base class (or create my own equivalent) that leaves out the
providerLock by default, but still offers a way to lock it when desired? Is
there anything that strikes you as "wrong" about doing this? I just tried
this and have it instantiating fine now without auto-connecting to the
datasource, and it also connects to data source for other EXE fine too.
However, I'm run into 2 new troubles.
1) When I instantiate a basic Gentle.Persistence.Entity subclass, I get
a bunch of Exception notices in my debug window. It appears this is related
to the ProviderLock portion of the code. Is there something I can do to
prevent these exceptions from happening?
A first chance exception of type
'System.Configuration.ConfigurationErrorsException' occurred in
System.Configuration.dll
A first chance exception of type 'System.InvalidOperationException' occurred
in System.dll
'WmcGui.vshost.exe' (Managed): Loaded
'C:\WINDOWS\assembly\GAC_32\System.Web\2.0.0.0__b03f5f7f11d50a3a\System.Web.
dll', Skipped loading symbols. Module is optimized and the debugger option
'Just My Code' is enabled.
'WmcGui.vshost.exe' (Managed): Loaded 'C:\Documents and Settings\Thomas\My
Documents\Visual Studio
2005\Projects\IGT\Rita\bin\Debug\Gentle.Reflection.dll', Symbols loaded.
A first chance exception of type
'System.Configuration.ConfigurationErrorsException' occurred in
System.Configuration.dll
A first chance exception of type
'System.Configuration.ConfigurationErrorsException' occurred in
System.Configuration.dll
'WmcGui.vshost.exe' (Managed): Loaded 'C:\Documents and Settings\Thomas\My
Documents\Visual Studio
2005\Projects\IGT\Rita\bin\Debug\Gentle.Provider.SQLServer.dll', Symbols
loaded.
'WmcGui.vshost.exe' (Managed): Loaded 'C:\Documents and Settings\Thomas\My
Documents\Visual Studio 2005\Projects\IGT\Rita\bin\Debug\QuickGraph.dll', No
symbols loaded.
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
'WmcGui.vshost.exe' (Managed): Loaded
'C:\WINDOWS\assembly\GAC_32\System.Transactions\2.0.0.0__b77a5c561934e089\Sy
stem.Transactions.dll', Skipped loading symbols. Module is optimized and the
debugger option 'Just My Code' is enabled.
'WmcGui.vshost.exe' (Managed): Loaded
'C:\WINDOWS\assembly\GAC_32\System.EnterpriseServices\2.0.0.0__b03f5f7f11d50
a3a\System.EnterpriseServices.dll', Skipped loading symbols. Module is
optimized and the debugger option 'Just My Code' is enabled.
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
A first chance exception of type 'System.FormatException' occurred in
mscorlib.dll
2) There's a bug when doing an entity.Retrieve(int primkey). When
the [TableColumn] attribute for the primary key of a table is significantly
different than the Property name that it decorates, there's a function in
the prop name lookup that fails. It works fine if the table name and
property name are basically the same (disregarding case), but fails if, as
in my case, the table name has an underscore, but the property name doesn't.
i.e. the following fails:
[TableColumn("customer_number", IsNullAllowed=false),
PrimaryKey(IsAutoGenerated=false)]
public string CustomerNumber
The following is the section of code that causes the problem. It looks like
the actual correct property name is saved in the memberMap, it's just the
check that tests whether it matches the column name that fails. Is this
check necessary? It seems desirable to be able to have the column name and
decorated property name be different. In the case below, memberName ==
"customer_number", and name == "CustomerNumber", so the [if(
memberName.Equals( name.ToLower() ) )] evaluates to false, which is the bug,
in my opinion. This results in an unhandled exception and the correct row
is not retrieved. I got around it by renaming my tables to not have "_",
though I could have changed this bit of code too. Another option would be
to decorate the private members of the object and name them with "_", but
that seems like an arbitrary requirement when the memberMap has the correct
mapping, it just needs to use it correctly.
/// <summary>
/// Obtain the MemberMap of a specific member given its name.
/// </summary>
/// <param name="memberName">The name of the member to search for.</param>
/// <returns>The corresponding MemberMap or null if none was
found.</returns>
public MemberMap FindMember( string memberName )
{
Check.VerifyNotNull( memberName, Error.NullParameter, "memberName" );
memberName = memberName.Trim().ToLower();
foreach( MemberMap memberMap in this )
{
string name = memberMap.MetaMember != null ?
memberMap.MemberName : memberMap.ColumnName;
if( memberName.Equals( name.ToLower() ) )
{
return memberMap;
}
}
return null;
}
Thomas
From: gop...@li...
[mailto:gop...@li...] On Behalf Of Drazen Penic
Sent: Saturday, July 21, 2007 4:02 AM
To: Gentle development
Subject: Re: [gentle] possible to use a VO with no backend connection
available?
For Gentle 2 Morten wrote example - read
http://www.mertner.com/confluence/display/Gentle/Design+Recommendations
In Gentle 1 you can do similar thing: decorate class members or properties
with Gentle attributes and then you can persist objects with Broker methods
(see
http://www.mertner.com/confluence/display/Gentle/3.1+-+A+Basic+Example). You
can put persist methods in some "Repository" class.
drazen
----- Original Message -----
From: Thomas Spellman <mailto:th...@th...>
To: gop...@li...
Sent: Friday, July 20, 2007 10:40 PM
Subject: [gentle] possible to use a VO with no backend connection available?
I have two EXEs that both use a common DLL , which contains a VO (value
object). One of the EXEs needs to instantiate the VO and get/set its
properties, without having a db provider and without doing any persistence
to a db. The other EXE needs to instantiate the same VO class, and then
also be able to persist it to the DB, retrieve instances from the DB, use
simple one2many relations, etc. I'm hoping this is possible with just
config settings, or minor alterations to the VO objects using either gentle
1.x or gentle 2.0.
I like the auto-generated classes made by the 2.0 MyGeneration script better
since they use generics, etc.
I'm using the current HEAD from SVN and the classes auto generated by
MyGeneration using the BusinessEntity2.csgen script.
T
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