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diff --git a/tags/java/sca/2.0-M3-RC3a/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultValidatingXMLInputFactory.java b/tags/java/sca/2.0-M3-RC3a/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultValidatingXMLInputFactory.java
new file mode 100644
index 0000000000..8aac0ce3f6
--- /dev/null
+++ b/tags/java/sca/2.0-M3-RC3a/modules/contribution/src/main/java/org/apache/tuscany/sca/contribution/processor/DefaultValidatingXMLInputFactory.java
@@ -0,0 +1,423 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.tuscany.sca.contribution.processor;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.Reader;
+import java.net.URL;
+import java.net.URLConnection;
+import java.security.AccessController;
+import java.security.PrivilegedActionException;
+import java.security.PrivilegedExceptionAction;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.xml.XMLConstants;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.stream.EventFilter;
+import javax.xml.stream.StreamFilter;
+import javax.xml.stream.XMLEventReader;
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLReporter;
+import javax.xml.stream.XMLResolver;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.util.XMLEventAllocator;
+import javax.xml.transform.Source;
+import javax.xml.transform.stream.StreamSource;
+import javax.xml.validation.Schema;
+import javax.xml.validation.SchemaFactory;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.core.UtilityExtensionPoint;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.monitor.MonitorFactory;
+import org.apache.tuscany.sca.monitor.Problem;
+import org.apache.tuscany.sca.monitor.Problem.Severity;
+import org.w3c.dom.DOMImplementation;
+import org.w3c.dom.ls.DOMImplementationLS;
+import org.w3c.dom.ls.LSInput;
+import org.w3c.dom.ls.LSResourceResolver;
+import org.xml.sax.SAXException;
+
+/**
+ * Default implementation of an XMLInputFactory that creates validating
+ * XMLStreamReaders.
+ *
+ * @version $Rev$ $Date$
+ */
+public class DefaultValidatingXMLInputFactory extends ValidatingXMLInputFactory implements LSResourceResolver {
+
+    private XMLInputFactory inputFactory;
+    private DocumentBuilderFactory documentBuilderFactory;
+    private DOMImplementationLS ls;
+    private ValidationSchemaExtensionPoint schemas;
+    private Monitor monitor;
+    private boolean initialized;
+    private boolean hasSchemas;
+    private Schema aggregatedSchema;
+
+    public DefaultValidatingXMLInputFactory(ExtensionPointRegistry registry) {
+        FactoryExtensionPoint factoryExtensionPoint = registry.getExtensionPoint(FactoryExtensionPoint.class);
+        this.inputFactory = factoryExtensionPoint.getFactory(XMLInputFactory.class);
+        this.documentBuilderFactory = factoryExtensionPoint.getFactory(DocumentBuilderFactory.class);
+        this.schemas = registry.getExtensionPoint(ValidationSchemaExtensionPoint.class);
+        this.monitor =
+            registry.getExtensionPoint(UtilityExtensionPoint.class).getUtility(MonitorFactory.class).createMonitor();
+    }
+
+    /**
+     * Constructs a new XMLInputFactory.
+     *
+     * @param inputFactory
+     * @param schemas
+     */
+    public DefaultValidatingXMLInputFactory(XMLInputFactory inputFactory, ValidationSchemaExtensionPoint schemas, Monitor monitor) {
+        this.inputFactory = inputFactory;
+        this.schemas = schemas;
+        this.monitor = monitor;
+    }
+
+    /**
+     * Report a exception.
+     *
+     * @param problems
+     * @param message
+     * @param model
+     */
+    private void error(String message, Object model, Throwable ex) {
+        if (monitor != null) {
+            Problem problem =
+                monitor.createProblem(this.getClass().getName(),
+                                      "contribution-validation-messages",
+                                      Severity.ERROR,
+                                      model,
+                                      message,
+                                      ex);
+            monitor.problem(problem);
+        }
+    }
+
+    private void warn(String message, Object model, Throwable ex) {
+        if (monitor != null) {
+            Problem problem =
+                monitor.createProblem(this.getClass().getName(),
+                                      "contribution-validation-messages",
+                                      Severity.WARNING,
+                                      model,
+                                      message,
+                                      ex);
+            monitor.problem(problem);
+        }
+    }
+
+    /**
+     * Initialize the registered schemas and create an aggregated schema for
+     * validation.
+     */
+    private void initializeSchemas() {
+        if (initialized) {
+            return;
+        }
+        initialized = true;
+
+        // Load the XSDs registered in the validation schema extension point
+        try {
+            List<String> uris = schemas.getSchemas();
+            int n = uris.size();
+            if (n ==0) {
+                return;
+            } else {
+                hasSchemas = true;
+            }
+            final Source[] sources = new Source[n];
+            for (int i =0; i < n; i++) {
+                final String uri = uris.get(i);
+                // Allow privileged access to open URL stream. Requires FilePermission in security policy.
+                final URL url = new URL( uri );
+                InputStream urlStream;
+                try {
+                    urlStream = AccessController.doPrivileged(new PrivilegedExceptionAction<InputStream>() {
+                        public InputStream run() throws IOException {
+                            URLConnection connection = url.openConnection();
+                            connection.setUseCaches(false);
+                            return connection.getInputStream();
+                        }
+                    });
+                } catch (PrivilegedActionException e) {
+                	error("PrivilegedActionException", url, (IOException)e.getException());
+                    throw (IOException)e.getException();
+                }
+                sources[i] = new StreamSource(urlStream, uri);
+            }
+
+            // Create an aggregated validation schemas from all the XSDs
+            final SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
+
+            /*
+            // Set the feature to avoid DTD processing
+            try {
+                schemaFactory.setFeature("http://apache.org/xml/features/nonvalidating/load-dtd-grammar", false);
+                schemaFactory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false);
+                schemaFactory.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
+            } catch (SAXException e) {
+                // Ignore
+            }
+            */
+
+            DOMImplementation impl = null;
+            try {
+                impl = documentBuilderFactory.newDocumentBuilder().getDOMImplementation();
+            } catch (ParserConfigurationException e) {
+                // Ignore
+            }
+            if (impl instanceof DOMImplementationLS) {
+                ls = (DOMImplementationLS)impl;
+                schemaFactory.setResourceResolver(this);
+            }
+            // Allow privileged access to check files. Requires FilePermission
+            // in security policy.
+            try {
+                aggregatedSchema = AccessController.doPrivileged(new PrivilegedExceptionAction<Schema>() {
+                    public Schema run() throws SAXException {
+                        return schemaFactory.newSchema(sources);
+                    }
+                });
+            } catch (PrivilegedActionException e) {
+            	warn("PrivilegedActionException", schemaFactory, (SAXException)e.getException());
+            	hasSchemas = false;
+                throw (SAXException)e.getException();
+            }
+
+        } catch (SAXException e) {
+//            IllegalStateException ie = new IllegalStateException(e);
+//            error("IllegalStateException", schemas, ie);
+//            throw ie;
+        } catch (Throwable e) {
+            //FIXME Log this, some old JDKs don't support XMLSchema validation
+            warn(e.getMessage(), schemas, e);
+            hasSchemas = false;
+        }
+    }
+
+    @Override
+    public XMLEventReader createFilteredReader(XMLEventReader arg0, EventFilter arg1) throws XMLStreamException {
+        return inputFactory.createFilteredReader(arg0, arg1);
+    }
+
+    @Override
+    public XMLStreamReader createFilteredReader(XMLStreamReader arg0, StreamFilter arg1) throws XMLStreamException {
+        return inputFactory.createFilteredReader(arg0, arg1);
+    }
+
+    @Override
+    public XMLEventReader createXMLEventReader(InputStream arg0, String arg1) throws XMLStreamException {
+        return inputFactory.createXMLEventReader(arg0, arg1);
+    }
+
+    @Override
+    public XMLEventReader createXMLEventReader(InputStream arg0) throws XMLStreamException {
+        return inputFactory.createXMLEventReader(arg0);
+    }
+
+    @Override
+    public XMLEventReader createXMLEventReader(Reader arg0) throws XMLStreamException {
+        return inputFactory.createXMLEventReader(arg0);
+    }
+
+    @Override
+    public XMLEventReader createXMLEventReader(Source arg0) throws XMLStreamException {
+        return inputFactory.createXMLEventReader(arg0);
+    }
+
+    @Override
+    public XMLEventReader createXMLEventReader(String arg0, InputStream arg1) throws XMLStreamException {
+        return inputFactory.createXMLEventReader(arg0, arg1);
+    }
+
+    @Override
+    public XMLEventReader createXMLEventReader(String arg0, Reader arg1) throws XMLStreamException {
+        return inputFactory.createXMLEventReader(arg0, arg1);
+    }
+
+    @Override
+    public XMLEventReader createXMLEventReader(XMLStreamReader arg0) throws XMLStreamException {
+        return inputFactory.createXMLEventReader(arg0);
+    }
+
+    @Override
+    public XMLStreamReader createXMLStreamReader(InputStream arg0, String arg1) throws XMLStreamException {
+        initializeSchemas();
+        if (hasSchemas) {
+            return new ValidatingXMLStreamReader(inputFactory.createXMLStreamReader(arg0, arg1), aggregatedSchema, monitor);
+        }else {
+            return inputFactory.createXMLStreamReader(arg0, arg1);
+        }
+    }
+
+    @Override
+    public XMLStreamReader createXMLStreamReader(InputStream arg0) throws XMLStreamException {
+        initializeSchemas();
+        if (hasSchemas) {
+            return new ValidatingXMLStreamReader(inputFactory.createXMLStreamReader(arg0), aggregatedSchema, monitor);
+        } else {
+            return inputFactory.createXMLStreamReader(arg0);
+        }
+    }
+
+    @Override
+    public XMLStreamReader createXMLStreamReader(Reader arg0) throws XMLStreamException {
+        initializeSchemas();
+        if (hasSchemas) {
+            return new ValidatingXMLStreamReader(inputFactory.createXMLStreamReader(arg0), aggregatedSchema, monitor);
+        } else {
+            return inputFactory.createXMLStreamReader(arg0);
+        }
+    }
+
+    @Override
+    public XMLStreamReader createXMLStreamReader(Source arg0) throws XMLStreamException {
+        initializeSchemas();
+        if (hasSchemas) {
+            return new ValidatingXMLStreamReader(inputFactory.createXMLStreamReader(arg0), aggregatedSchema, monitor);
+        } else {
+            return inputFactory.createXMLStreamReader(arg0);
+        }
+    }
+
+    @Override
+    public XMLStreamReader createXMLStreamReader(String arg0, InputStream arg1) throws XMLStreamException {
+        initializeSchemas();
+        if (hasSchemas) {
+            return new ValidatingXMLStreamReader(inputFactory.createXMLStreamReader(arg0, arg1), aggregatedSchema, monitor);
+        } else {
+            return inputFactory.createXMLStreamReader(arg0, arg1);
+        }
+    }
+
+    @Override
+    public XMLStreamReader createXMLStreamReader(String arg0, Reader arg1) throws XMLStreamException {
+        initializeSchemas();
+        if (hasSchemas) {
+            return new ValidatingXMLStreamReader(inputFactory.createXMLStreamReader(arg0, arg1), aggregatedSchema, monitor);
+        } else {
+            return inputFactory.createXMLStreamReader(arg0, arg1);
+        }
+    }
+
+    @Override
+    public XMLEventAllocator getEventAllocator() {
+        return inputFactory.getEventAllocator();
+    }
+
+    @Override
+    public Object getProperty(String arg0) throws IllegalArgumentException {
+        return inputFactory.getProperty(arg0);
+    }
+
+    @Override
+    public XMLReporter getXMLReporter() {
+        return inputFactory.getXMLReporter();
+    }
+
+    @Override
+    public XMLResolver getXMLResolver() {
+        return inputFactory.getXMLResolver();
+    }
+
+    @Override
+    public boolean isPropertySupported(String arg0) {
+        return inputFactory.isPropertySupported(arg0);
+    }
+
+    @Override
+    public void setEventAllocator(XMLEventAllocator arg0) {
+        inputFactory.setEventAllocator(arg0);
+    }
+
+    @Override
+    public void setProperty(String arg0, Object arg1) throws IllegalArgumentException {
+        inputFactory.setProperty(arg0, arg1);
+    }
+
+    @Override
+    public void setXMLReporter(XMLReporter arg0) {
+        inputFactory.setXMLReporter(arg0);
+    }
+
+    @Override
+    public void setXMLResolver(XMLResolver arg0) {
+        inputFactory.setXMLResolver(arg0);
+    }
+
+    /**
+     * Cache for public XSDs and DTDs
+     */
+    private static Map<String, URL> cachedXSDs = new HashMap<String, URL>();
+    static {
+        cachedXSDs
+            .put("http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd",
+                 DefaultValidatingXMLInputFactory.class
+                     .getResource("/org/apache/tuscany/sca/assembly/xsd/oasis-200401-wss-wssecurity-secext-1.0.xsd"));
+        cachedXSDs
+            .put("http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd",
+                 DefaultValidatingXMLInputFactory.class
+                     .getResource("/org/apache/tuscany/sca/assembly/xsd/oasis-200401-wss-wssecurity-utility-1.0.xsd"));
+        cachedXSDs.put("http://www.w3.org/2005/08/addressing", DefaultValidatingXMLInputFactory.class
+            .getResource("/org/apache/tuscany/sca/assembly/xsd/ws-addr.xsd"));
+        cachedXSDs.put("http://www.w3.org/ns/ws-policy", DefaultValidatingXMLInputFactory.class
+            .getResource("/org/apache/tuscany/sca/assembly/xsd/ws-policy.xsd"));
+        cachedXSDs.put("http://www.w3.org/ns/wsdl-instance", DefaultValidatingXMLInputFactory.class
+            .getResource("/org/apache/tuscany/sca/assembly/xsd/wsdli.xsd"));
+        cachedXSDs.put("http://www.w3.org/XML/1998/namespace", DefaultValidatingXMLInputFactory.class
+            .getResource("/org/apache/tuscany/sca/assembly/xsd/xml.xsd"));
+        cachedXSDs.put("http://www.w3.org/2000/09/xmldsig#", DefaultValidatingXMLInputFactory.class
+            .getResource("/org/apache/tuscany/sca/assembly/xsd/xmldsig-core-schema.xsd"));
+
+        cachedXSDs.put("-//W3C//DTD XMLSCHEMA 200102//EN", DefaultValidatingXMLInputFactory.class
+            .getResource("/org/apache/tuscany/sca/assembly/xsd/XMLSchema.dtd"));
+        cachedXSDs.put("datatypes", DefaultValidatingXMLInputFactory.class
+            .getResource("/org/apache/tuscany/sca/assembly/xsd/datatypes.dtd"));
+    };
+
+    public LSInput resolveResource(String type, String namespaceURI, String publicId, String systemId, String baseURI) {
+        String key = null;
+        if("http://www.w3.org/2001/XMLSchema".equals(type)) {
+            key = namespaceURI;
+        } else if("http://www.w3.org/TR/REC-xml".equals(type)) {
+            key = publicId;
+        }
+        URL url = cachedXSDs.get(key);
+        if (url != null) {
+            systemId = url.toString();
+        }
+
+        LSInput input = ls.createLSInput();
+        input.setBaseURI(baseURI);
+        input.setPublicId(publicId);
+        input.setSystemId(systemId);
+        return input;
+    }
+
+}