Personally, I would move the 'id' attribute to the A class, as that's
where it belongs to (semantically).
Werner
Werner Guttmann wrote:
> Georg,
>
> I don't think it's possible to map a 'multi-valued' field such as the
> 'id' field of B to a single occurence within the XML output.
>
> Werner
>
> Georg Federmann wrote:
>> Hello Werner,
>>
>> thanks a lot for your reply!
>> Here is the mapping as I am using it right now:
>>
>> <mapping>
>> <class name="ab.Data">
>> <map-to xml="data"/>
>> <field name="data" type="ab.A" collection="array">
>> <bind-xml name="a" node="element"/>
>> </field>
>> </class>
>>
>> <class name="ab.A">
>> <field name="field" type="ab.B" container="true" collection="array">
>> <bind-xml name="value" node="element"/>
>> </field>
>> </class>
>>
>> <class name="ab.B">
>> <field name="value" type="integer"/>
>> </class>
>> </mapping>
>>
>> and this is the result generated by Castor:
>>
>> <data>
>> <a>
>> <value>15</value>
>> <value>8</value>
>> </a>
>> <a>
>> <value>12</value>
>> <value>17</value>
>> <value>8</value>
>> <value>3</value>
>> </a>
>> </data>
>>
>> this is as far as I got, and it's already very beautiful. But the crucial
>> step is to get the "id" field of the B type into the "id" attribute of the
>> <a> element like in
>>
>> <data>
>> <a id="series1">
>> <value>15</value>
>> <value>8</value>
>> </a>
>> <a id="series2">
>> <value>12</value>
>> <value>17</value>
>> <value>8</value>
>> <value>3</value>
>> </a>
>> </data>
>>
>> I'm very grateful for any help here!
>>
>> best regards, Georg
>>
>> I've added the sources of the java types, maybe it's of any help ...
>>
>> package ab;
>> public class A {
>> private B[] field;
>>
>> public A () {};
>>
>> public A ( B[] bs ){
>> setField ( bs );
>> }
>>
>> public B[] getField () {
>> return field;
>> }
>>
>> public void setField ( B[] field ) {
>> this.field = field;
>> }
>> }
>>
>> package ab;
>> public class B {
>> private String id;
>> private int value;
>>
>> public B (){}
>>
>> public B ( int val, String id ){
>> setId ( id );
>> setValue ( val );
>> }
>>
>> public String getId () {
>> return id;
>> }
>>
>> public void setId ( String id ) {
>> this.id = id;
>> }
>>
>> public int getValue () {
>> return value;
>> }
>>
>> public void setValue ( int value ) {
>> this.value = value;
>> }
>> }
>>
>> package ab;
>> public class Data {
>> private A[] data;
>>
>> public Data (){};
>>
>> public Data ( A[] data ){
>> setData ( data );
>> }
>>
>> public A[] getData () {
>> return data;
>> }
>>
>> public void setData ( A[] data ) {
>> this.data = data;
>> }
>> }
>>
>> package ab;
>> public class MarshalTest {
>>
>> public static void main ( String[] args ) throws IOException,
>> MappingException, MarshalException, ValidationException {
>> Mapping mapping = new Mapping ();
>> mapping.loadMapping ( "resources/abMapping.xml" );
>>
>> B[] b1 = new B[] { new B ( 15, "series1" ), new B ( 8, "series1" )
>> };
>> B[] b2 = new B[] { new B ( 12, "series2" ), new B ( 17, "series2" ),
>> new B ( 8, "series2" ), new B ( 3, "series2" ) };
>> A[] a1 = new A[] { new A ( b1 ), new A ( b2 ) };
>> Data data = new Data ( a1 );
>>
>> StringWriter writer = new StringWriter ();
>> Marshaller marshaller = new Marshaller ( writer );
>> marshaller.setMapping ( mapping );
>> marshaller.marshal ( data );
>>
>> System.out.println ( writer.toString () );
>> Writer output = new FileWriter ( new File ( "resources/abResult.xml"
>> ) );
>> output.write ( writer.toString () );
>> output.flush ();
>> output.close ();
>> }
>> }
>>
>>
>>
>> On Mon, Jun 9, 2008 at 10:13 AM, Werner Guttmann <[EMAIL PROTECTED]>
>> wrote:
>>
>>> Georg,
>>>
>>> what does your mapping file look like right now ? How have you tried to
>>> map A and Bs ?
>>>
>>> Having said that, I guess this might be achievable, but I am not 100%
>>> sure. Basically, you will have to use the container attribute (set to
>>> false) on the class mapping for 'B', so that no <B> tags will be
>>> rendered. Whether this will work with your additional requirement on the
>>> aggregation by the value of the id attribute of B, not sure.
>>>
>>> Regards
>>> Werner
>>>
>>> Georg Federmann wrote:
>>>> Hi all,
>>>>
>>>> I need to marshal a given object model to a given xml, but I can't
>>> persuade
>>>> Castor to do as needed.
>>>> This is the problem:
>>>> I have two java types A and B where B has a field "id" and A holds
>>>> references to B. Now I need the field "id" of B as an attribute of the
>>> xml
>>>> element <a>, that represents A.
>>>>
>>>> class A{
>>>> B[] field;
>>>> }
>>>>
>>>> class B{
>>>> String id;
>>>> int value;
>>>> }
>>>>
>>>> a collection of objects of type A shall be marshalled to some xml like
>>> this:
>>>> <data>
>>>> <a id="b1">
>>>> <value>15</value>
>>>> <value>8</value>
>>>> </a>
>>>> <a id="b2">
>>>> <value>12</value>
>>>> <value>17</value>
>>>> <value>8</value>
>>>> <value>3</value>
>>>> </a>
>>>> </data>
>>>>
>>>> Somehow I can't see, how I can split the fields of the B type into an
>>>> attribute "id" of the <a> element and a child element <value> of the <a>
>>>> element.
>>>>
>>>>
>>>> I appreciate any help
>>>>
>>>> best regards, Georg
>>>>
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