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Getting compile time error in castor generated java file  RSS feed

Sumeet Srivastava
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your help would be appreciated

I am trying to call webservice which would return complex data type like my own developed java class say Psp.java, which is having setter/getter of three variables, all are of string type. I am getting this in response form from ServerClient.sendReceive(payload) method. This is like :

"<ns:getEchoStringResponse xmlns:ns="http://test.tom/xsd"><ns:return xmlns:ax21="http://service/xsd" type="service.Psp"><ax21:errDs>Success</ax21:errDs><ax21:qryId>43113</ax21:qryId><ax21:qryName>test567</ax21:qryName></ns:return></ns:getEchoStringResponse>"

Now, this is my xsd file:

<xs:schema attributeFormDefault="unqualified" elementFormDefault="unqualified" targetNamespace="http://test.tom/xsd" xmlns:axis2="http://test.tom/" xmlns:ns="http://test.tom/xsd" xmlns:ns1="http://org.apache.axis2/xsd" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="getEchoString">
<xs:element minOccurs="0" name="echoStr" nillable="true" type="xs:string"/>

<xs:element name="getEchoStringResponse" type="ns:psp"/>
<xs:complexType name="psp">
<xs:element name="qryId" type="xs:integer"/>
<xs:element name="qryName" type="xs:string"/>
<xs:element name="errDs" type="xs:string"/>

<xs:element name="main">
<xs:element maxOccurs="unbounded" minOccurs="0" name="args" nillable="true" type="xs:string"/>

Through castor's code generator, I got 8 java files (4 files for simple java and 4 files for descriptor java) from xsd file.

I am getting following complie time errors in MainDescriptor.java file:

org.exolab.castor.xml.util.XMLFieldDescriptorImpl desc = null;
desc = new org.exolab.castor.xml.util.XMLFieldDescriptorImpl(java.lang.String.class, "_argsList", "args", org.exolab.castor.xml.NodeType.Element);

// complie time error #1
desc.setComponentType("string"); // complie time error is: this method in undefined for the type XMLFieldDescriptorImpl
// complie time error #2
addSequenceElement(desc); // complie time error is: this method in undefined for the type MainDescriptor.java

the complie time error #2 is also comming in PspDescriptor.java and GetEchoStringDescriptor.java file.

Please let me know where I am missing any steps.. Thanks in advance.

One more thing, I commented that line where I am getting error. and try to unmarsh to Java through castor. this is following code whcih I am using for un-marshalling:

response = sc.sendReceive(createPayLoad());
StAXSource staxSource = new StAXSource(response.getXMLStreamReader());
Unmarshaller unmarshaller = new Unmarshaller(GetEchoStringResponse.class);
UnmarshalHandler unmarshalHandler = unmarshaller.createHandler();
GetEchoStringResponse echoStringResponse;
try {
ContentHandler contentHandler = Unmarshaller.getContentHandler(unmarshalHandler);
SAXResult staxTarget = new SAXResult(contentHandler);
try {
// runtime error line
TransformerFactory.newInstance().newTransformer().transform(staxSource, staxTarget); } catch (TransformerFactoryConfigurationError e) {
// TODO Auto-generated catch block
echoStringResponse = (GetEchoStringResponse) unmarshalHandler.getObject();

} catch (SAXException e) {
throw new RuntimeException(e);
} catch (TransformerException e) {
throw new RuntimeException(e);

Getting following error while running :
Exception in thread "main" java.lang.NullPointerException
at javanet.staxutils.StAXSource$1.parse(StAXSource.java:196)
at javanet.staxutils.StAXSource$1.parse(StAXSource.java:181)
at org.apache.xalan.transformer.TransformerIdentityImpl.transform(TransformerIdentityImpl.java:484)
at client.TomClient.main(TomClient.java:96)

Please help me out on this.

It is sorta covered in the JavaRanch Style Guide.
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