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Editorial Team
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Asked: 2026-05-16T07:18:55+00:00

When binding on some valid XML documents using Ant’s xjc2 task, I get the

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When binding on some valid XML documents using Ant’s xjc2 task, I get the following failure message:

[xjc2] [ERROR] null
[xjc2] unknown location

The documents are very similar to other files which have bound successfully, all imported schemas exist. Running xjc in verbose mode produced:

Parent is not Defined Class...I cannot get the fields from this class

Anyone have any idea what this means?

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1 Answer

  1. Editorial Team

    Schema Correctness Check

    In our use of XJC we have seen a similar problem (see the link below) that was solved by disabling the schema correctness check:

    Try the following System property to disable the schema correctness check. 

    -Dcom.sun.tools.xjc.api.impl.s2j.SchemaCompilerImpl.noCorrectnessCheck=true

    For Ant, try:

    <xjc target="src">
  <schema dir="src" includes="**/*.xsd" excludes="**/debug.xsd"/>
  <arg value="-nv" />
</xjc>

    From the following page the -nv parameter relates to the schema correctness check:

    Getting into the Code

    You could try interacting with XJC programmatically (see below) and plug-in your own EntityResolver to see where the import/include fails:

    import com.sun.codemodel.*;
import com.sun.tools.xjc.*;
import com.sun.tools.xjc.api.*;

SchemaCompiler sc = XJC.createSchemaCompiler();
sc.setEntityResolver(new YourEntityResolver());
sc.setErrorListener(new YourErrorListener());
sc.parseSchema(SYSTEM_ID, element);
S2JJAXBModel model = sc.bind();
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