That is actually the correct way. In the mapping you define a type
java.util.Collection. The the actual object looks to accept a type of
java.util.List. This will not work.
Look at it this way. Try the following code (which is basically what you
are asking Castor to do):
public static void main(String args[])
{
java.util.Collection myCollection = new java.util.ArrayList();
testMethod( myCollection );
}
private void testMethod( java.util.List myList )
{
}
javac will not even let you compile this code.
********************************************
Steve Ebersole
IT Integration Engineer
Vignette Corporation
512.741.4195
Visit http://www.vignette.com
********************************************
-----Original Message-----
From: Theo Harper [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, April 10, 2002 10:53 AM
To: [EMAIL PROTECTED]
Subject: [castor-dev] collection="collection" and java.util.List return
type.
I would like some feedback on a possible bug I have found in
MappingLoader.java on line 1022, CVS 1.77. The isAssignableFrom test seems
to be the wrong way around. (Almost always a source of confusion!!)
Here's my scenario. I have a setter on my class which takes java.util.List
as an argument, in the mapping file I have defined this field using
collection="collection". When I try run my test code, which exercises
marshalling and unmarshalling my object I get the following exception:
org.exolab.castor.mapping.MappingException: The method setObjects in class
Foo
accepting/returning object of type interface java.util.Collection was not
found.
I have tracked this problem down to line 1022 of MappingLoader.java
Types.typeFromPrimitive( parameterTypes[0] ).isAssignableFrom(
fieldTypeFromPrimitive ) )) {
in the debugger this comes out as:
java.util.List.isAssignableFrom(java.util.Collection)
should this not be:
fieldTypeFromPrimitive.isAssignableFrom( Types.typeFromPrimitive(
parameterTypes[0] )) )) {
Not sure if this is associated with bug 834.
Theo
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