Hi Reinhard,
have a look at the following mapping that allows me to marshal the given
Java object instances to your desired XML output structure.
<mapping>
<class name="xml.reinhard.A">
<description>Mapping for Class com.xyz.A</description>
<map-to xml="A" ns-uri="http://xyz.com/A"; ns-prefix="a" />
<field name="strings" collection="arraylist" type="string">
<bind-xml name="string" node="element" location="b"/>
</field>
</class>
</mapping>
Please note that I changed the package when running the test(s) locally.
Regards
Werner
Reinhard Weiss wrote:
> hi,
>
> i'am using castor-xml-1.0.5 but even with 1.2 the problem remains:
> i cannot completely unmarshal an object from the xml i have marshalled before
> using a mapping file.
>
> i have a class as simple as this:
>
>
>
> package com.xyz;
> import java.util.List;
> import java.util.ArrayList;
> public class A
> {
> private List<String> strings;
> public A()
> {
> this.strings = new ArrayList<String>(3);
> this.strings.add("one");
> this.strings.add("two");
> this.strings.add("three");
> }
> public void setStrings(List<String> strings)
> {
> this.strings = strings;
> }
> public List<String> getStrings()
> {
> return this.strings;
> }
> }
>
>
>
> the mapping file looks as follows
>
>
>
> <mapping>
> <class name="com.xyz.A">
> <description>Mapping for Class com.xyz.A</description>
> <map-to xml="A" ns-uri="http://xyz.com/A"; ns-prefix="a" />
> <field name="strings" collection="arraylist" type="string"
> container="false">
> <bind-xml name="b" node="element"/>
> </field>
> </class>
> </mapping>
>
>
>
> it marshals:
>
>
>
> <?xml version="1.0" encoding="UTF-8"?>
> <a:A xmlns:a="http://xyz.com/A";>
> <!-- notice that there is no namespace anymore ??? -->
> <b>
> <string>one</string>
> <string>two</string>
> <string>three</string>
> </b>
> </a:A>
>
>
>
> ok, the structure of the xml is finally what i want.
> i use the 'container="false"' attribute in the 'field' element to get one
> 'string' element per list item (as suggested on the how-to page). otherwise
> all strings were merged into a single 'string' element containing
> "onetwothree" (however - all elements with correct namespaces). but for some
> reason castor suppresses the namespace when i use the container attribute.
>
> then, if i ignore the namespace issue and try to unmarshal the xml, i don't
> get back my list of strings any more. as castor failed to handle the 'b'
> element throwing a MarshalException ('unable to find FieldDescriptor for 'b')
> first, i have set the 'ignoreExtraElements' property of the unmarshaller to
> 'true' (using a 'location' attribute with 'b/string' in the 'bind-xml'
> element of my mapping instead didn't help as well).
>
>
>
> my test looks as follows
>
>
> public void testMarshalUnmarshal()
> throws Exception
> {
> A a = new A();
>
> Mapping mapping = new Mapping();
> mapping.loadMapping("a-mapping.xml");
>
> StringWriter writer = new StringWriter();
>
> // global marshaller
> marshaller.setWriter(writer);
> marshaller.setMapping(mapping);
> marshaller.marshal(a);
>
> String marshalled = writer.toString();
> if (logger.isDebugEnabled) logger.debug(marshalled);
>
> // global unmarshaller
> unmarshaller.setMapping(mapping);
> unmarshaller.setIgnoreExtraAttributes(true);
> unmarshaller.setIgnoreExtraElements(true);
>
> StringReader reader = new StringReader(marshalled);
>
> Object unmarshalled = unmarshaller.unmarshal(reader);
>
> assertNotNull(unmarshalled);
> assertTrue(unmarshalled instanceof A);
>
> // this assertion fails
> assertNotNull(((A) unmarshalled).getStrings());
> assertEquals(a.getStrings().size(), ((A)
> unmarshalled).getStrings().size());
> }
>
>
>
> in the end i am still looking for a proper mapping.xml to get the following
> xml:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <a:A xmlns:a="http://xyz.com/A";>
> <a:b>
> <a:string>one</a:string>
> <a:string>two</a:string>
> <a:string>three</a:string>
> </a:b>
> </a:A>
>
> which i can successfully unmarshal again.
>
> any kind of coaching would be nice!
> thx in advance,
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> DI Reinhard Weiss
> Java Developer
>
> ANECON Software Design und Beratung G.m.b.H.
> Alser Straße 4 / Hof 1
> A-1090 WIEN
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> Zusätzliche Pflichtangaben von Kapitalgesellschaften gem. § 14 UGB:
> FN166941b | Handelsgericht Wien | Firmensitz Wien
>
>
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