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copied!<p>After much searching, I finally found the answer. Hopefully this will help someone else. There are already other threads on StackOverflow relating to this issue, but without knowing the proper keywords, I wasn't finding the responses.</p> <p>The solution is to use an LSResourceResolver for the schema factory. ie:</p> <pre><code>schemaFactory.setResourceResolver(new LSResourceResolver(){}) </code></pre> <p>where LSResourceResolver() is responsible for returning the include/import resource that is required by the XSD.</p> <p>Searching for LSResourceResolver in SO found a few useful threads: <a href="https://stackoverflow.com/a/3830649/827480">https://stackoverflow.com/a/3830649/827480</a>, <a href="https://stackoverflow.com/a/2342859/827480">https://stackoverflow.com/a/2342859/827480</a></p> <p>I will try to post my own solution later when I have a little more time, but it closely follows what was already suggested in the two above links (mine is a little more simplified by using Strings instead of streams...).</p> <p><strong>EDIT</strong></p> <p>As promised, here is the snippet of code I ended up with:</p> <pre><code> // get the schemas used by this class final Map<String, String> schemas = new HashMap<String,String>(); schemas.putAll(generateSchemas(jc)); List<StreamSource> sources = new ArrayList<StreamSource>(); for( String schema : schemas.values() ) sources.add( new StreamSource( new ByteArrayInputStream(schema.getBytes()))); SchemaFactory sf = SchemaFactory.newInstance( XMLConstants.W3C_XML_SCHEMA_NS_URI ); sf.setResourceResolver(new LSResourceResolver() { @Override public LSInput resolveResource(String type, final String namespaceURI, String publicId, String systemId, String baseURI){ logger.debug( "Need to resolve Resource: " + namespaceURI ); return new LSInput(){ @Override public String getStringData() { // return the schema if found if( schemas.containsKey(namespaceURI)){ if( logger.isTraceEnabled()) logger.trace("resourceResolver: Resolving schema for namespace: " + namespaceURI + schemas.get(namespaceURI) ); return schemas.get(namespaceURI); } else return null; } @Override public Reader getCharacterStream() { return null; } @Override public void setCharacterStream(Reader paramReader) { } @Override public InputStream getByteStream() { return null; } @Override public void setByteStream(InputStream paramInputStream) { } @Override public void setStringData(String paramString) { } @Override public String getSystemId() { return null; } @Override public void setSystemId(String paramString) { } @Override public String getPublicId() { return null; } @Override public void setPublicId(String paramString) { } @Override public String getBaseURI() { return null; } @Override public void setBaseURI(String paramString) { } @Override public String getEncoding() { return null; } @Override public void setEncoding(String paramString) { } @Override public boolean getCertifiedText() { return false; } @Override public void setCertifiedText(boolean paramBoolean) { } }; } }); // validate the schema u.setSchema(sf.newSchema(sources.toArray(new StreamSource[]{}))); </code></pre> <p>and method generateSchemas(jc):</p> <pre><code>private Map<String, String> generateSchemas (JAXBContext jaxbContext) throws JAXBException{ // generate the schemas final Map<String, ByteArrayOutputStream> schemaStreams = new LinkedHashMap<String,ByteArrayOutputStream>(); try { jaxbContext.generateSchema(new SchemaOutputResolver(){ @Override public Result createOutput(String namespaceUri, String suggestedFileName) throws IOException { ByteArrayOutputStream out = new ByteArrayOutputStream(); logger.debug( "GenerateSchemas: adding namespace: " + namespaceUri); schemaStreams.put(namespaceUri, out); StreamResult streamResult = new StreamResult(out); streamResult.setSystemId(""); return streamResult; }}); } catch (IOException e) { // no IO being performed. Can safely ignore any IO exception. } // convert to a list of string Map<String,String> schemas = new LinkedHashMap<String,String>(); for( Map.Entry<String, ByteArrayOutputStream> entry : schemaStreams.entrySet() ){ String schema = entry.getValue().toString(); String namespace = entry.getKey(); schemas.put(namespace, schema); } // done return schemas; } </code></pre> <p><strong>END EDIT</strong></p> <p>I hope this can help someone else in the future.</p> <p>Thanks,</p> <p>Eric</p>

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