Bryan,
if you are stuck with Castor 0.9.9, most of the bug fixing and/or
refactoring that has gone into (better) support for (nested) maps will
not be available to you .. :-(. Are you in a position to explain briefly
why you could not switch to e.g. Castor 1.1 or 1.1.1 ?
I will have a look at CASTOR-1313 to get an idea what this is about ....
Werner
Bryan Helm wrote:
> I had a lot of problems with this, and had to hack up
> my version of Castor to get it to work (so now I am
> stuck on an older version). For version 0.9.9.1, I
> added my own support following the pattern of the
> existing support. I had to implement new MapItem
> classes for arrays or collections to be values of hash
> maps. I did not submit my changes as a patch because I
> don't think what I did was the right way to support
> this - it was a quick-and-dirty fix.
>
> See CASTOR-1313 for other related Map weaknesses when
> the value is itself multivalued, e.g. a Map, List, or
> array. If somebody is revamping Map processing, it
> would be nice to keep that in mind as well.
>
> Bryan
>
> --- Christopher Spoehr <[EMAIL PROTECTED]> wrote:
>
>> Hello-
>>
>> I'm trying to marshal/unmarshal a HashMap of
>> HashMaps (eventually it will be a HashMap of HMs,
>> Vectors, and Arrays, but one step at a time.) The
>> XML I'll eventually be working with will be given to
>> me as one string - that's why I'm working with the
>> string readers/writers.
>>
>> Using the Castor FAQ and the archives, I've gotten
>> Castor to marshal and unmarshal the bean class
>> holding the HM successfully for a single dimensional
>> HashMap. For the nested HM, Castor marshals
>> acceptably but gets hung up on the unmarshaling. Any
>> tips would be appreciated. I'd seen in a previous
>> thread that Stephen Bash has had some experience
>> with this. Are you still out the Stephen?
>>
>> Holder Class:
>>
>> public class HashMapHolderBean {
>>
>> private HashMap heldHashMap;
>>
>> public HashMapHolderBean()
>> {
>> heldHashMap = new HashMap();
>> }
>>
>> public HashMapHolderBean(HashMap inputHashMap)
>> {
>> heldHashMap = inputHashMap;
>> }
>>
>> public HashMap getHeldHashMap() {
>> return heldHashMap;
>> }
>>
>> public void setHeldHashMap(HashMap map) {
>> heldHashMap = map;
>> }
>> }
>>
>> HashMapHolderBeanMapping.xml:
>> <?xml version="1.0" encoding="UTF-8"?>
>> <mapping>
>> <class
>> name="com.sbc.cctp.easl.web.artt.HashMapHolderBean"
>> auto-complete="false">
>> <description>Default mapping for class
>>
> com.sbc.cctp.easl.web.artt.HashMapHolderBean</description>
>> <map-to xml="hash-map-holder-bean" />
>> <field name="heldHashMap" collection="map">
>> <bind-xml name="held-hash-map">
>> <class
>> name="org.exolab.castor.mapping.MapItem">
>> <field name="key" type="string">
>> <bind-xml name="key"
>> node="element" />
>> </field>
>> <field name="value"
>> type="java.lang.Object">
>> <bind-xml name="value"
>> node="element">
>> <class
>> name="org.exolab.castor.mapping.MapItem" />
>> </bind-xml>
>> </field>
>> </class>
>> </bind-xml>
>> </field>
>> </class>
>> </mapping>
>>
>> Marshalling/Unmarshalling code:
>> private String testMarshalling()
>> {
>> HashMap mapHM = new HashMap();
>> mapHM.put("test","Hello World.");
>> mapHM.put("test2","Hello Universe");
>>
>> HashMap level2 = new HashMap();
>> level2.put("level2_1","I'm level two");
>>
>> mapHM.put("level2", level2);
>>
>> HashMapHolderBean hashMapHolder = new
>> HashMapHolderBean(mapHM);
>> StringWriter stringWriter = new StringWriter();
>>
>> try
>> {
>>
>> //InputSource mappingSource = new InputSource(
>> new StringReader(generateMapString()));
>> InputSource mappingSource = new
>>
> InputSource(ClassLoader.getSystemResource("HashMapHolderBeanMapping.xml").toString());
>> Mapping mapping = new
>>
> Mapping(AutomatedRegressionTestTool.class.getClassLoader());
>> mapping.loadMapping(mappingSource);
>>
>> Marshaller marshaller = new
>> Marshaller(stringWriter);
>> marshaller.setMapping(mapping);
>> marshaller.marshal(hashMapHolder);
>> }
>> catch (Exception e)
>> {
>> log.error("Marshalling Error",e);
>> }
>>
>> return stringWriter.getBuffer().toString();
>> }
>>
>> private HashMapHolderBean testUnMarshalling(String
>> marshalled)
>> {
>> String sourceString = marshalled;
>> log.info("Marshalled length: " +
>> marshalled.length());
>> log.info("Source length: " +
>> sourceString.length());
>> log.info(sourceString);
>>
>> HashMapHolderBean hmhb = new
>> HashMapHolderBean();
>>
>> try
>> {
>> InputSource mappingSource = new
>>
> InputSource(ClassLoader.getSystemResource("HashMapHolderBeanMapping.xml").toString());
>> Mapping mapping = new
>>
> Mapping(AutomatedRegressionTestTool.class.getClassLoader());
>> mapping.loadMapping(mappingSource);
>>
>> Unmarshaller unm = new Unmarshaller(mapping);
>>
>> hmhb = (HashMapHolderBean)unm.unmarshal(new
>> StringReader(sourceString));
>> }
>> catch (IOException ioException)
>> {
>> log.error("IOException occured in
>> testUnMarshalling() ", ioException);
>> }
>> catch (MappingException mappingException)
>> {
>> log.error("Mapping exception occured in
>> testUnMarshalling() ", mappingException);
>> }
>> catch (Exception e)
>> {
>> log.error("Unmarshalling exception caught.",
>> e);
>> }
>>
>> return hmhb;
>>
>> }
>>
>> toString of the HM returned by testUnMarshalling
>> (from inside of the holder bean, of course):
>> {test2=Hello Universe,
>> [EMAIL PROTECTED],
>> test=Hello World.}
>>
>> Of course I'll be happy to answer any clarification
>> questions one may need to ask.
>>
>> Chris Spoehr
>>
>>
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