Well I thought it was working, and it is sort of, but it's not
generating all classes and there is no interface/impl sepration - it
only seems to be generating the complex types. My code for doing this
can be found here:
http://fisheye.jboss.org/browse/JBossRules/trunk/drools-dataloaders/drools-dataloaders-jaxb/src/main/java/org/drools/dataloaders/jaxb/DroolsJaxbHelper.java?r=21079
Any feedback on this would be welcome, are there some extra options I
need to set for runtime generation?
Thanks
Mark
Mark Proctor wrote:
> I've managed to get this working, debugging through the jaxb code. The
> problem is that it needs to re-use the Reader, but it calls close(),
> which on StringReader sets the str member to null or closes the
> InputStream on InputStream reader. To get around this I extended
> StringReader and override the close() method to call reset() instead.
>
> Mark
>
>
> Mark Proctor wrote:
>> I'm trying to get XJC to generate the src code for an XSD model at
>> runtime using the XJC api, using just input streams as we don't want
>> disk access. This is to facilite the data loading of XSD based models
>> into Drools at runtime. We will compile the src at runtime using an
>> embedded compiler and add it to the Drools classloader. I've already
>> done something similar for a Smooks data loadaer
>> http://blog.athico.com/2008/07/drools-smooks-data-loader.html. I've
>> looked over the maven plugin for XJC, changing it from a File based
>> utility to InputStreams, although now stuck. I've included the test
>> code below, along with the error and the xsd. If anyone can help, or
>> point me to some code that already does this, would be very much
>> appreciated.
>>
>> Thanks
>>
>> Mark
>>
>> --------The Test-------------
>> test1() throws Exception {
>> Options xjcOpts = new Options();
>> xjcOpts.setSchemaLanguage( Language.XMLSCHEMA );
>> InputStream stream = getClass().getResourceAsStream( "test.xsd" );
>> assertNotNull( stream ); InputSource source = new InputSource( new
>> InputStreamReader( stream ) );
>>
>> source.setSystemId( ".xsd" );
>> xjcOpts.addGrammar( source );
>> ErrorReceiver errorReceiver = new JaxbErrorReceiver4Drools();
>> Model model = ModelLoader.load( xjcOpts, new JCodeModel(),
>> errorReceiver); final Outline outline =
>> model.generateCode(xjcOpts, errorReceiver);
>> ByteArrayOutputStream baos = new ByteArrayOutputStream();
>> model.codeModel.build( xjcOpts.createCodeWriter( new
>> SingleStreamCodeWriter( baos ) ) ); String str = new String(
>> baos.toByteArray() );
>> System.out.println( str ); }
>>
>> public class JaxbErrorReceiver4Drools extends ErrorReceiver {
>> public String stage = "processing";
>>
>> public void warning(SAXParseException e) {
>> e.printStackTrace();
>> }
>>
>> public void error(SAXParseException e) {
>> e.printStackTrace();
>> }
>>
>> public void fatalError(SAXParseException e) {
>> e.printStackTrace();
>> }
>>
>> public void info(SAXParseException e) {
>> e.printStackTrace();
>> }
>> }
>>
>> -------------The Error----------------
>> java.io.IOException: Stream closed
>> at
>> com.sun.xml.xsom.impl.parser.NGCCRuntimeEx.parseEntity(NGCCRuntimeEx.java:305)
>> at
>> com.sun.xml.xsom.impl.parser.ParserContext.parse(ParserContext.java:88)
>> at com.sun.xml.xsom.parser.XSOMParser.parse(XSOMParser.java:147)
>> at
>> com.sun.tools.xjc.ModelLoader.createXSOMSpeculative(ModelLoader.java:496)
>>
>> at com.sun.tools.xjc.ModelLoader.loadXMLSchema(ModelLoader.java:366)
>> at com.sun.tools.xjc.ModelLoader.load(ModelLoader.java:167)
>> at com.sun.tools.xjc.ModelLoader.load(ModelLoader.java:113)
>> at
>> org.drools.dataloaders.jaxb.DroolsJaxbTest.test1(DroolsJaxbTest.java:36)
>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>> at java.lang.reflect.Method.invoke(Unknown Source)
>> at junit.framework.TestCase.runTest(TestCase.java:154)
>> at junit.framework.TestCase.runBare(TestCase.java:127)
>> at junit.framework.TestResult$1.protect(TestResult.java:106)
>> at junit.framework.TestResult.runProtected(TestResult.java:124)
>> at junit.framework.TestResult.run(TestResult.java:109)
>> at junit.framework.TestCase.run(TestCase.java:118)
>> at junit.framework.TestSuite.runTest(TestSuite.java:208)
>> at junit.framework.TestSuite.run(TestSuite.java:203)
>> at
>> org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
>> at
>> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
>> at
>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
>>
>>
>> -----------The test.xsd file-----------
>> schema xmlns = "http://www.w3.org/2001/XMLSchema";
>> xmlns:exp="http://www.oracle.com/sample3/";
>> targetNamespace="http://www.oracle.com/sample3/";
>> elementFormDefault="qualified">
>>
>> <complexType name="Address">
>> <sequence>
>> <element name="name" type="string"/>
>> <element name="doorNumber" type="short"/>
>> <element name="street" type="string"/>
>> <element name="city" type="string"/>
>> </sequence>
>> </complexType>
>>
>> <complexType name="USAddress">
>> <complexContent>
>> <extension base="exp:Address">
>> <sequence>
>> <element name="state" type="string"/>
>> <element name="zip" type="integer"/>
>> <element name="country" type="string"/>
>> </sequence>
>> </extension>
>> </complexContent>
>> </complexType>
>>
>> <element name="myAddress" type="exp:USAddress"/>
>>
>> </schema>
>>
>>
>>
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>>
>
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