Nullable DateTime support?

[Tony Selke <ts...@liquidhub.com>]

I am getting the following error . . .

 

{"Could not load type from string value 'System.DateTime?'.":""}

at IBatisNet.Common.Utilities.TypesResolver.TypeResolver.ResolveType(String
typeName)

 

. . . when trying to load a parameter like this . . .

 

<parameter property="BirthDate" column="BirthDate" dbType="datetime"
type="System.DateTime?" />

 

 

I found a note from Oct 2005 in the list archives that indicated the need
for a custom DateTimeTypeHandler to deal with nullable DateTimes, but I
suspect that this might have a better way to be addressed now.  All of the
other nullable, native types seem to work fine.  It's just the DateTime
structure that seems to be throwing an error.

 

Am I missing something?

 

Tony

RE: Nullable DateTime support?

[Tony Selke <ts...@liquidhub.com>]

So I found (again) the documentation that states that all nullable types,
including DateTime, are supported along with the documentation that there is
an intrinsic typeAlias to convert DateTime? into Nullable<DateTime>.

 

Just to try and do a sanity check, I went back to my parameters and changed
them to remove the explicit, optional attributes.  So, for example, the
DateTime? properties went from the previous example to:

 

<parameter property="BirthDate" column="BirthDate" />

 

I am now able to successfully load my entire set of sqlMaps without an
initialization/loading error.  However, I still think this indicates a bug
in the handling/processing of the "type" attribute of the "parameter" and
"argument" elements.

 

Tony

 

From: Tony Selke [mailto:tselke@liquidhub.com] 
Sent: Thursday, May 31, 2007 12:06 PM
To: user-cs@ibatis.apache.org
Subject: Nullable DateTime support?

 

I am getting the following error . . .

 

{"Could not load type from string value 'System.DateTime?'.":""}

at IBatisNet.Common.Utilities.TypesResolver.TypeResolver.ResolveType(String
typeName)

 

. . . when trying to load a parameter like this . . .

 

<parameter property="BirthDate" column="BirthDate" dbType="datetime"
type="System.DateTime?" />

 

 

I found a note from Oct 2005 in the list archives that indicated the need
for a custom DateTimeTypeHandler to deal with nullable DateTimes, but I
suspect that this might have a better way to be addressed now.  All of the
other nullable, native types seem to work fine.  It's just the DateTime
structure that seems to be throwing an error.

 

Am I missing something?

 

Tony