Check out:
http://www.castor.org/jdo-mapping.html#The-%3Cfield%3E-element
It has a list of available collection/array types that can be used as
well as an example or two for 'em as well. Hope this helps!
-Nick
On Fri, 05 Nov 2004 08:50:22 +0100, Andreas Vombach
<[EMAIL PROTECTED]> wrote:
>
> Hello all,
>
> I would like to map a class with an array type member. From the docu it
> is not clear to me if this is possible only for XML or for JDO as well.
> The class:
>
> public class test
> {
> private Integer id;
> private String[] myarray;
>
> public test() {}
>
> public Integer getId()
> { return this.id; }
>
> public void setId(Integer id)
> { this.id = id; }
>
> public String[] getMyarray()
> { return this.myarray; }
>
> public void setMyarray(String[] myarray)
> { this.myarray = myarray; }
> }
>
> The mapping file:
>
> <mapping>
> <class name="test" identity="id" key-generator="MAX">
> <map-to table="test"/>
> <field name="id" type="integer">
> <sql name="ID" type="integer" />
> </field>
> <field name="myarray" type="java.lang.String" collection="array">
> <sql name="MYARRAY" type="char" />
> </field>
> </class>
> </mapping>
>
> Is the mapping correct? I played with the settings but get an exception
> when I retrieve stored values:
>
> JDO queryException: org.exolab.castor.jdo.DataObjectAccessException:
> Type conver
> sion error: could not set value of FieldMolder of
> test.setmyarray(java.lang.Stri
> ng myarray) with value of type java.lang.String
> org.exolab.castor.jdo.DataObjectAccessException: Type conversion error:
> could no
> t set value of FieldMolder of test.setmyarray(java.lang.String myarray)
> with val
> ue of type java.lang.String
> at
> org.exolab.castor.persist.FieldMolder.setValue(FieldMolder.java:330)
> at org.exolab.castor.persist.ClassMolder.load(ClassMolder.java:720)
> at org.exolab.castor.persist.LockEngine.load(LockEngine.java:356)
> at
> org.exolab.castor.persist.TransactionContext.load(TransactionContext.
> java:649)
> at
> org.exolab.castor.persist.QueryResults.fetch(QueryResults.java:229)
> at
> org.exolab.castor.jdo.engine.OQLQueryImpl$OQLEnumeration.next(OQLQuer
> yImpl.java:697)
> at
> org.exolab.castor.jdo.engine.OQLQueryImpl$OQLEnumeration.next(OQLQuer
> yImpl.java:670)
> at jdotest.main(jdotest.java:44)
>
> .. and this only if the table contains more than one row. Thanks for
> any help!
>
> Andreas
>
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