Move Tuscany from Incubator to top level.

git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@668359 13f79535-47bb-0310-9956-ffa450edef68

10 files changed, 1262 insertions, 0 deletions

diff --git a/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/BPELExtensionHandler.java b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/BPELExtensionHandler.java
new file mode 100644
index 0000000000..c34a8626f7
--- /dev/null
+++ b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/BPELExtensionHandler.java
@@ -0,0 +1,132 @@
+/*

+ * 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.interfacedef.wsdl.xml;

+

+import java.io.PrintWriter;

+

+import javax.wsdl.Definition;

+import javax.wsdl.WSDLException;

+import javax.wsdl.extensions.ExtensibilityElement;

+import javax.wsdl.extensions.ExtensionDeserializer;

+import javax.wsdl.extensions.ExtensionRegistry;

+import javax.wsdl.extensions.ExtensionSerializer;

+import javax.xml.namespace.QName;

+

+import org.w3c.dom.Element;

+import org.w3c.dom.NodeList;

+

+/**

+ * A WSDL extension processor for extension elements introduced by BPEL - in particular

+ * the <partnerLinkType.../> elements

+ *

+ * @version $Rev$ $Date$

+ */

+public class BPELExtensionHandler implements ExtensionSerializer, ExtensionDeserializer {

+

+	private final String localName = "partnerLinkType";

+	private final String roleName = "role";

+

+	/**

+	 * Marshals the BPEL partner link type extension element to XML

+	 * See (@link javax.wsdl.extensions.ExtensionSerializer)

+	 */

+	@SuppressWarnings("unchecked")

+	public void marshall(Class parentType, QName elementType, ExtensibilityElement theElement,

+			PrintWriter writer, Definition def, ExtensionRegistry extReg)

+			throws WSDLException {

+		// The format of the Partner Link Type in XML is as follows:

+		// <foo:partnerLinkType name="bar">

+		//    <foo:role name="somename" portType="xyz:portTypeName"/>

+		//    <foo:role name="othername" portType="xyz:portTypeName2"/>

+		// <foo:partnerLinkType>

+		BPELPartnerLinkTypeExt thePLinkType = (BPELPartnerLinkTypeExt) theElement;

+		QName theType = thePLinkType.getElementType();

+

+		writer.println("<" + theType.toString() +

+				       " name=\"" + thePLinkType.getName() + "\">");

+		for( int i = 0; i < 2; i++ ) {

+			if( thePLinkType.getRoleName( i ) != null ) {

+				writer.println( "<" + theType.getPrefix() + ":role"

+						       + " name=\"" + thePLinkType.getRoleName(i) + "\" portType=\""

+						       + thePLinkType.getRolePortType(i) + "\">");

+			} // end if

+		} // end for

+		writer.println("</" + theType.toString() + ">");

+	} // end marshall

+

+	/**

+	 * Unmarshals the BPEL partner link type element from XML

+	 * See (@link javax.wsdl.extensions.ExtensionDeserializer)

+	 * The format of the Partner Link Type in XML is as follows:

+	 *   <foo:partnerLinkType name="bar">

+	 *       <foo:role name="somename" portType="xyz:portTypeName"/>

+	 *       <foo:role name="othername" portType="xyz:portTypeName2"/>

+	 *   <foo:partnerLinkType>

+	 *

+	 *   One role is mandatory, the second is optional.

+	 */

+	@SuppressWarnings("unchecked")

+	public ExtensibilityElement unmarshall(Class theClass, QName elementType,

+			Element theElement, Definition def, ExtensionRegistry extReg)

+			throws WSDLException {

+		// System.out.println("BPELExtensionHandler unmarshall called");

+

+		// Check that this elementType really is a partnerLinkType element

+		if( !elementType.getLocalPart().equals(localName) ) return null;

+		BPELPartnerLinkTypeExt theExtension = new BPELPartnerLinkTypeExt();

+		theExtension.setElementType(elementType);

+		theExtension.setName( theElement.getAttribute("name") );

+

+		//Fetch the child "role" elements

+		NodeList theRoles = theElement.getElementsByTagNameNS("*", roleName);

+		for ( int i=0; i < theRoles.getLength(); i++ ) {

+			if( i > 1 ) break;

+			Element roleNode = (Element)theRoles.item(i);

+			String roleName = roleNode.getAttribute("name");

+			String portType = roleNode.getAttribute("portType");

+			// The PortType attribute is a QName in prefix:localName format - convert to a QName

+			QName rolePortType = getQNameValue( def, portType );

+			theExtension.setRole( i, roleName, rolePortType );

+		} // end for

+		return theExtension;

+	} // end unmarshall

+

+

+    /**

+     * Returns a QName from a string.

+     * @param definition - a WSDL Definition

+     * @param value - the String from which to form the QName in the form "pref:localName"

+     * @return

+     */

+    protected QName getQNameValue(Definition definition, String value) {

+        if (value != null && definition != null) {

+            int index = value.indexOf(':');

+            String prefix = index == -1 ? "" : value.substring(0, index);

+            String localName = index == -1 ? value : value.substring(index + 1);

+            String ns = definition.getNamespace(prefix);

+            if (ns == null) {

+                ns = "";

+            }

+            return new QName(ns, localName, prefix);

+        } else {

+            return null;

+        }

+    } // end getQNameValue

+

+} // end BPELExtensionHandler

diff --git a/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/BPELPartnerLinkTypeExt.java b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/BPELPartnerLinkTypeExt.java
new file mode 100644
index 0000000000..67124832f3
--- /dev/null
+++ b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/BPELPartnerLinkTypeExt.java
@@ -0,0 +1,79 @@
+/*

+ * 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.interfacedef.wsdl.xml;

+

+import javax.wsdl.extensions.ExtensibilityElement;

+import javax.xml.namespace.QName;

+

+/**

+ * A class to serve as the extensibility element for BPEL partnerLinkType elements

+ *

+ * @version $Rev$ $Date$

+ */

+public class BPELPartnerLinkTypeExt implements ExtensibilityElement {

+

+	private QName elementType = null;

+	private String linkTypeName = null;

+	private String[] roleNames = new String[2];

+	private QName[] rolePortTypes = new QName[2];

+

+	// -- methods required by the Extensibility Element interface

+	public QName getElementType() {

+		return elementType;

+	}

+

+	public Boolean getRequired() {

+		return true;

+	}

+

+	public void setElementType(QName theName ) {

+		elementType = theName;

+	}

+

+	public void setRequired(Boolean required) {

+		// intentionally left blank

+	}

+

+	// -- other methods

+

+	public void setName( String theName ) {

+		linkTypeName = theName;

+	}

+

+	public String getName() {

+		return linkTypeName;

+	}

+

+	public void setRole( int i, String name, QName portType ) {

+		if( i > 1 ) return;

+		roleNames[i] = name;

+		rolePortTypes[i] = portType;

+	}

+

+	public String getRoleName( int i ) {

+		if( i > 1 ) return null;

+		return roleNames[i];

+	}

+

+	public QName getRolePortType( int i ) {

+		if( i > 1 ) return null;

+		return rolePortTypes[i];

+	}

+

+} // end BPELPartnerLinkTypeExt

diff --git a/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLConstants.java b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLConstants.java
new file mode 100644
index 0000000000..f9ddda6d98
--- /dev/null
+++ b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLConstants.java
@@ -0,0 +1,40 @@
+/*
+ * 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.interfacedef.wsdl.xml;
+
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.assembly.xml.Constants;
+
+/**
+ * Constants for WSDL.
+ *
+ * @version $Rev$ $Date$
+ */
+public interface WSDLConstants {
+
+    String INTERFACE_WSDL = "interface.wsdl";
+    QName INTERFACE_WSDL_QNAME = new QName(Constants.SCA10_NS, "interface.wsdl");
+    String INTERFACE = "interface";
+    String CALLBACK_INTERFACE = "callbackInterface";
+    String WSDL_LOCATION = "wsdlLocation";
+    String WSDLI_NS = "http://www.w3.org/2004/08/wsdl-instance";
+    QName WSDL_LOCATION_QNAME = new QName(WSDLI_NS, WSDL_LOCATION); 
+
+}
diff --git a/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLDocumentProcessor.java b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLDocumentProcessor.java
new file mode 100644
index 0000000000..6302913c25
--- /dev/null
+++ b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLDocumentProcessor.java
@@ -0,0 +1,230 @@
+/*
+ * 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.interfacedef.wsdl.xml;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URI;
+import java.net.URL;
+import java.util.List;
+
+import javax.wsdl.Definition;
+import javax.wsdl.Import;
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamConstants;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+
+import org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.service.ContributionReadException;
+import org.apache.tuscany.sca.contribution.service.ContributionResolveException;
+import org.apache.tuscany.sca.interfacedef.wsdl.WSDLDefinition;
+import org.apache.tuscany.sca.interfacedef.wsdl.WSDLFactory;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.monitor.Problem;
+import org.apache.tuscany.sca.monitor.Problem.Severity;
+import org.apache.tuscany.sca.xsd.XSDefinition;
+import org.apache.tuscany.sca.xsd.XSDFactory;
+
+/**
+ * An ArtifactProcessor for WSDL documents.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class WSDLDocumentProcessor implements URLArtifactProcessor<WSDLDefinition> {
+
+    public static final QName WSDL11 = new QName("http://schemas.xmlsoap.org/wsdl/", "definitions");
+    public static final QName WSDL11_IMPORT = new QName("http://schemas.xmlsoap.org/wsdl/", "import");
+    public static final QName XSD = new QName("http://www.w3.org/2001/XMLSchema", "schema");
+
+    private static final XMLInputFactory inputFactory = XMLInputFactory.newInstance();
+
+    private WSDLFactory factory;
+    private XSDFactory xsdFactory;
+    private Monitor monitor;
+
+    public WSDLDocumentProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) {
+        this.factory = modelFactories.getFactory(WSDLFactory.class);
+        this.xsdFactory = modelFactories.getFactory(XSDFactory.class);
+        this.monitor = monitor;
+    }
+    
+    /**
+     * Report a exception.
+     * 
+     * @param problems
+     * @param message
+     * @param model
+     */
+     private void error(String message, Object model, Exception ex) {
+    	 if (monitor != null) {
+    		 Problem problem = new ProblemImpl(this.getClass().getName(), "interface-wsdlxml-validation-messages", Severity.ERROR, model, message, ex);
+    	     monitor.problem(problem);
+    	 }        
+     }
+
+    public WSDLDefinition read(URL contributionURL, URI artifactURI, URL artifactURL) throws ContributionReadException {
+        try {
+            WSDLDefinition definition = indexRead(artifactURL);
+            definition.setURI(artifactURI);
+            return definition;
+        } catch (Exception e) {
+        	ContributionReadException ce = new ContributionReadException(e);
+        	error("ContributionReadException", artifactURL, ce);
+            //throw ce;
+        	return null;
+        }
+    }
+
+    public void resolve(WSDLDefinition model, ModelResolver resolver) throws ContributionResolveException {
+        if (model == null) return;
+    	
+        Definition definition = model.getDefinition();
+        if (definition != null) {
+            for (Object imports : definition.getImports().values()) {
+                List importList = (List)imports;
+                for (Object i : importList) {
+                    Import imp = (Import)i;
+                    if (imp.getDefinition() != null) {
+                        continue;
+                    }
+                    if (imp.getLocationURI() == null) {
+                        // FIXME: [rfeng] By the WSDL 1.1 Specification, the location attribute is required
+                        // We need to resolve it by QName
+                        WSDLDefinition proxy = factory.createWSDLDefinition();
+                        proxy.setUnresolved(true);
+                        proxy.setNamespace(imp.getNamespaceURI());
+                        WSDLDefinition resolved = resolver.resolveModel(WSDLDefinition.class, proxy);
+                        if (resolved != null && !resolved.isUnresolved()) {
+                            imp.setDefinition(resolved.getDefinition());
+                            if (!model.getImportedDefinitions().contains(resolved)) {
+                                model.getImportedDefinitions().add(resolved);
+                            }
+                        }
+                    } else {
+                        String location = imp.getLocationURI();
+                        URI uri = URI.create(location);
+                        if (uri.isAbsolute()) {
+                            WSDLDefinition resolved;
+                            try {
+                                resolved = read(null, uri, uri.toURL());
+                                imp.setDefinition(resolved.getDefinition());
+                                if (!model.getImportedDefinitions().contains(resolved)) {
+                                    model.getImportedDefinitions().add(resolved);
+                                }
+                            } catch (Exception e) {
+                            	ContributionResolveException ce = new ContributionResolveException(e);
+                            	error("ContributionResolveException", resolver, ce);
+                                //throw ce;
+                            }
+                        } else {
+                            if (location.startsWith("/")) {
+                                // This is a relative URI against a contribution
+                                location = location.substring(1);
+                                // TODO: Need to resolve it against the contribution
+                            } else {
+                                // This is a relative URI against the WSDL document
+                                URI baseURI = URI.create(model.getDefinition().getDocumentBaseURI());
+                                URI locationURI = baseURI.resolve(location);
+                                WSDLDefinition resolved;
+                                try {
+                                    resolved = read(null, locationURI, locationURI.toURL());
+                                    imp.setDefinition(resolved.getDefinition());
+                                    if (!model.getImportedDefinitions().contains(resolved)) {
+                                        model.getImportedDefinitions().add(resolved);
+                                    }
+                                } catch (Exception e) {
+                                	ContributionResolveException ce = new ContributionResolveException(e);
+                                	error("ContributionResolveException", resolver, ce);
+                                    //throw ce;
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    public String getArtifactType() {
+        return ".wsdl";
+    }
+
+    public Class<WSDLDefinition> getModelType() {
+        return WSDLDefinition.class;
+    }
+
+    /**
+     * Read the namespace for the WSDL definition and inline schemas
+     * 
+     * @param doc
+     * @return
+     * @throws IOException
+     * @throws XMLStreamException
+     */
+    protected WSDLDefinition indexRead(URL doc) throws Exception {
+        WSDLDefinition wsdlDefinition = factory.createWSDLDefinition();
+        wsdlDefinition.setUnresolved(true);
+        wsdlDefinition.setLocation(doc.toURI());
+
+        InputStream is = doc.openStream();
+        try {
+            XMLStreamReader reader = inputFactory.createXMLStreamReader(is);
+            int eventType = reader.getEventType();
+            int index = 0;
+            while (true) {
+                if (eventType == XMLStreamConstants.START_ELEMENT) {
+                    if (WSDL11.equals(reader.getName())) {
+                        String tns = reader.getAttributeValue(null, "targetNamespace");
+                        wsdlDefinition.setNamespace(tns);
+                        // The definition is marked as resolved but not loaded
+                        wsdlDefinition.setUnresolved(false);
+                        wsdlDefinition.setDefinition(null);
+                    }
+                    if (XSD.equals(reader.getName())) {
+                        String tns = reader.getAttributeValue(null, "targetNamespace");
+                        XSDefinition xsd = xsdFactory.createXSDefinition();
+                        xsd.setUnresolved(true);
+                        xsd.setNamespace(tns);
+                        xsd.setLocation(URI.create(doc.toURI() + "#" + index));
+                        index++;
+                        // The definition is marked as resolved but not loaded
+                        xsd.setUnresolved(false);
+                        xsd.setSchema(null);
+                        wsdlDefinition.getXmlSchemas().add(xsd);
+                    }
+                }
+                if (reader.hasNext()) {
+                    eventType = reader.next();
+                } else {
+                    break;
+                }
+            }
+            return wsdlDefinition;
+        } finally {
+            is.close();
+        }
+    }
+
+}
diff --git a/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLInterfaceProcessor.java b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLInterfaceProcessor.java
new file mode 100644
index 0000000000..e04a4d6743
--- /dev/null
+++ b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLInterfaceProcessor.java
@@ -0,0 +1,252 @@
+/*
+ * 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.interfacedef.wsdl.xml;
+
+import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
+
+import javax.wsdl.PortType;
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.apache.tuscany.sca.assembly.builder.impl.ProblemImpl;
+import org.apache.tuscany.sca.assembly.xml.Constants;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.service.ContributionReadException;
+import org.apache.tuscany.sca.contribution.service.ContributionResolveException;
+import org.apache.tuscany.sca.contribution.service.ContributionWriteException;
+import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException;
+import org.apache.tuscany.sca.interfacedef.wsdl.WSDLDefinition;
+import org.apache.tuscany.sca.interfacedef.wsdl.WSDLFactory;
+import org.apache.tuscany.sca.interfacedef.wsdl.WSDLInterface;
+import org.apache.tuscany.sca.interfacedef.wsdl.WSDLInterfaceContract;
+import org.apache.tuscany.sca.interfacedef.wsdl.WSDLObject;
+import org.apache.tuscany.sca.monitor.Monitor;
+import org.apache.tuscany.sca.monitor.Problem;
+import org.apache.tuscany.sca.monitor.Problem.Severity;
+
+/**
+ *
+ * @version $Rev$ $Date$
+ */
+public class WSDLInterfaceProcessor implements StAXArtifactProcessor<WSDLInterfaceContract>, WSDLConstants {
+
+    private WSDLFactory wsdlFactory;
+    private Monitor monitor;
+
+    public WSDLInterfaceProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) {
+        this.wsdlFactory = modelFactories.getFactory(WSDLFactory.class);
+        this.monitor = monitor;
+    }
+    
+    /**
+     * Report a warning.
+     * 
+     * @param problems
+     * @param message
+     * @param model
+     */
+    private void warning(String message, Object model, Object... messageParameters) {
+        if (monitor != null) {
+            Problem problem = new ProblemImpl(this.getClass().getName(), "interface-wsdlxml-validation-messages", Severity.WARNING, model, message, (Object[])messageParameters);
+            monitor.problem(problem);
+        }
+     }
+    
+    /**
+     * Report a error.
+     * 
+     * @param problems
+     * @param message
+     * @param model
+     */
+    private void error(String message, Object model, Object... messageParameters) {
+        if (monitor != null) {
+            Problem problem = new ProblemImpl(this.getClass().getName(), "interface-wsdlxml-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters);
+            monitor.problem(problem);
+        }
+     }
+   
+   /**
+    * Report a exception.
+    * 
+    * @param problems
+    * @param message
+    * @param model
+    */
+    private void error(String message, Object model, Exception ex) {
+        if (monitor != null) {
+            Problem problem = new ProblemImpl(this.getClass().getName(), "interface-wsdlxml-validation-messages", Severity.ERROR, model, message, ex);
+            monitor.problem(problem);
+        }        
+    }
+    
+    /**
+     * Create a WSDL interface from a URI.
+     * @param uri
+     * @return
+     * @throws ContributionReadException
+     */
+    private WSDLInterface createWSDLInterface(String uri) throws ContributionReadException {
+        
+    	WSDLInterface wsdlInterface = null;        
+
+        // Read a QName in the form:
+        // namespace#wsdl.interface(name)
+        int index = uri.indexOf('#');
+        if (index == -1) {
+        	error("InvalidWSDLInterfaceAttr", wsdlFactory, uri);
+            //throw new ContributionReadException("Invalid WSDL interface attribute: " + uri);
+        } else {
+        	wsdlInterface = wsdlFactory.createWSDLInterface();
+            wsdlInterface.setUnresolved(true);
+            String namespace = uri.substring(0, index);
+            String name = uri.substring(index + 1);
+            name = name.substring("wsdl.interface(".length(), name.length() - 1);
+            wsdlInterface.setName(new QName(namespace, name));
+        }       
+        
+        return wsdlInterface;
+    }
+
+    public WSDLInterfaceContract read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+        // Read an <interface.wsdl>
+        WSDLInterfaceContract wsdlInterfaceContract = wsdlFactory.createWSDLInterfaceContract();
+        
+        // Read wsdlLocation
+        String location = reader.getAttributeValue(WSDLI_NS, WSDL_LOCATION);
+        wsdlInterfaceContract.setLocation(location);
+        
+        String uri = reader.getAttributeValue(null, INTERFACE);
+        if (uri != null) {
+            WSDLInterface wsdlInterface = createWSDLInterface(uri);
+            if (wsdlInterface != null)
+                wsdlInterfaceContract.setInterface(wsdlInterface);
+        }
+        
+        uri = reader.getAttributeValue(null, CALLBACK_INTERFACE);
+        if (uri != null) {
+            WSDLInterface wsdlCallbackInterface = createWSDLInterface(uri);
+            if (wsdlCallbackInterface != null)
+                wsdlInterfaceContract.setCallbackInterface(wsdlCallbackInterface);
+        }
+            
+        // Skip to end element
+        while (reader.hasNext()) {
+            if (reader.next() == END_ELEMENT && INTERFACE_WSDL_QNAME.equals(reader.getName())) {
+                break;
+            }
+        }
+        return wsdlInterfaceContract;
+    }
+    
+    public void write(WSDLInterfaceContract wsdlInterfaceContract, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
+        // Write an <interface.wsdl>
+        writer.writeStartElement(Constants.SCA10_NS, INTERFACE_WSDL);
+
+        // Write interface name
+        WSDLInterface wsdlInterface = (WSDLInterface)wsdlInterfaceContract.getInterface();
+        if (wsdlInterface != null) {
+            QName qname = wsdlInterface.getName();
+            String uri = qname.getNamespaceURI() + "#wsdl.interface(" + qname.getLocalPart() + ")";
+            writer.writeAttribute(INTERFACE, uri);
+        }
+
+        WSDLInterface wsdlCallbackInterface = (WSDLInterface)wsdlInterfaceContract.getCallbackInterface();
+        if (wsdlCallbackInterface != null) {
+            QName qname = wsdlCallbackInterface.getName();
+            String uri = qname.getNamespaceURI() + "#wsdl.interface(" + qname.getLocalPart() + ")";
+            writer.writeAttribute(CALLBACK_INTERFACE, uri);
+        }
+        
+        // Write location
+        if (wsdlInterfaceContract.getLocation() != null) {
+            writer.writeAttribute(WSDLI_NS, WSDL_LOCATION, wsdlInterfaceContract.getLocation());
+        }
+        
+        writer.writeEndElement();
+    }
+    
+    private WSDLInterface resolveWSDLInterface(WSDLInterface wsdlInterface, ModelResolver resolver) throws ContributionResolveException {
+        
+        if (wsdlInterface != null && wsdlInterface.isUnresolved()) {
+
+            // Resolve the WSDL interface
+            wsdlInterface = resolver.resolveModel(WSDLInterface.class, wsdlInterface);
+            if (wsdlInterface.isUnresolved()) {
+
+                // If the WSDL interface has never been resolved yet, do it now
+                // First, resolve the WSDL definition for the given namespace
+                WSDLDefinition wsdlDefinition = wsdlFactory.createWSDLDefinition();
+                wsdlDefinition.setUnresolved(true);
+                wsdlDefinition.setNamespace(wsdlInterface.getName().getNamespaceURI());
+                WSDLDefinition resolved = resolver.resolveModel(WSDLDefinition.class, wsdlDefinition);
+                if (!resolved.isUnresolved()) {
+                    wsdlDefinition.setDefinition(resolved.getDefinition());
+                    wsdlDefinition.setLocation(resolved.getLocation());
+                    wsdlDefinition.setURI(resolved.getURI());
+                    wsdlDefinition.getImportedDefinitions().addAll(resolved.getImportedDefinitions());
+                    wsdlDefinition.getXmlSchemas().addAll(resolved.getXmlSchemas());
+                    wsdlDefinition.setUnresolved(false);
+                    WSDLObject<PortType> portType = wsdlDefinition.getWSDLObject(PortType.class, wsdlInterface.getName());
+                    if (portType != null) {                        
+                        // Introspect the WSDL portType and add the resulting
+                        // WSDLInterface to the resolver
+                        try {
+                            wsdlDefinition.setDefinition(portType.getDefinition());
+                            wsdlInterface = wsdlFactory.createWSDLInterface(portType.getElement(), wsdlDefinition, resolver);
+                            wsdlInterface.setWsdlDefinition(wsdlDefinition);
+                            resolver.addModel(wsdlInterface);
+                        } catch (InvalidInterfaceException e) {
+                        	ContributionResolveException ce = new ContributionResolveException(e);
+                        	error("ContributionResolveException", wsdlFactory, ce);
+                            //throw ce;
+                        }                        
+                    }
+                    else {
+                    	warning("WsdlInterfaceDoesNotMatch", wsdlDefinition, wsdlInterface.getName());
+                    }
+                }
+            }
+        }
+        return wsdlInterface;
+    }
+    
+    public void resolve(WSDLInterfaceContract wsdlInterfaceContract, ModelResolver resolver) throws ContributionResolveException {
+        
+        // Resolve the interface and callback interface
+        WSDLInterface wsdlInterface = resolveWSDLInterface((WSDLInterface)wsdlInterfaceContract.getInterface(), resolver);
+        wsdlInterfaceContract.setInterface(wsdlInterface);
+        
+        WSDLInterface wsdlCallbackInterface = resolveWSDLInterface((WSDLInterface)wsdlInterfaceContract.getCallbackInterface(), resolver);
+        wsdlInterfaceContract.setCallbackInterface(wsdlCallbackInterface);
+    }
+    
+    public QName getArtifactType() {
+        return WSDLConstants.INTERFACE_WSDL_QNAME;
+    }
+    
+    public Class<WSDLInterfaceContract> getModelType() {
+        return WSDLInterfaceContract.class;
+    }
+}
diff --git a/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLModelResolver.java b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLModelResolver.java
new file mode 100644
index 0000000000..9581f78980
--- /dev/null
+++ b/java/sca/modules/interface-wsdl-xml/src/main/java/org/apache/tuscany/sca/interfacedef/wsdl/xml/WSDLModelResolver.java
@@ -0,0 +1,449 @@
+/*
+ * 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.interfacedef.wsdl.xml;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URI;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.wsdl.Definition;
+import javax.wsdl.Operation;
+import javax.wsdl.PortType;
+import javax.wsdl.Types;
+import javax.wsdl.WSDLException;
+import javax.wsdl.extensions.AttributeExtensible;
+import javax.wsdl.extensions.ExtensibilityElement;
+import javax.wsdl.extensions.ExtensionDeserializer;
+import javax.wsdl.extensions.ExtensionRegistry;
+import javax.wsdl.extensions.ExtensionSerializer;
+import javax.wsdl.extensions.UnknownExtensibilityElement;
+import javax.wsdl.extensions.UnknownExtensionDeserializer;
+import javax.wsdl.extensions.UnknownExtensionSerializer;
+import javax.wsdl.extensions.schema.Schema;
+import javax.wsdl.xml.WSDLLocator;
+import javax.wsdl.xml.WSDLReader;
+import javax.xml.namespace.QName;
+
+import org.apache.tuscany.sca.contribution.Artifact;
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.ContributionFactory;
+import org.apache.tuscany.sca.contribution.DefaultImport;
+import org.apache.tuscany.sca.contribution.Import;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.contribution.namespace.NamespaceImport;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.contribution.service.ContributionReadException;
+import org.apache.tuscany.sca.contribution.service.ContributionRuntimeException;
+import org.apache.tuscany.sca.interfacedef.wsdl.WSDLDefinition;
+import org.apache.tuscany.sca.interfacedef.wsdl.WSDLFactory;
+import org.apache.tuscany.sca.xsd.XSDFactory;
+import org.apache.tuscany.sca.xsd.XSDefinition;
+import org.apache.tuscany.sca.xsd.xml.XMLDocumentHelper;
+import org.w3c.dom.Attr;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+import org.xml.sax.InputSource;
+
+/**
+ * A Model Resolver for WSDL models.
+ * 
+ * @version $Rev: 557916 $ $Date: 2007-07-20 01:04:40 -0700 (Fri, 20 Jul 2007) $
+ */
+public class WSDLModelResolver implements ModelResolver {
+    //Schema element names
+    public static final String ELEM_SCHEMA = "schema";
+
+    //Schema URI
+    public static final String NS_URI_XSD_1999 = "http://www.w3.org/1999/XMLSchema";
+    public static final String NS_URI_XSD_2000 = "http://www.w3.org/2000/10/XMLSchema";
+    public static final String NS_URI_XSD_2001 = "http://www.w3.org/2001/XMLSchema";
+
+    //Schema QNames
+    public static final QName Q_ELEM_XSD_1999 = new QName(NS_URI_XSD_1999, ELEM_SCHEMA);
+    public static final QName Q_ELEM_XSD_2000 = new QName(NS_URI_XSD_2000, ELEM_SCHEMA);
+    public static final QName Q_ELEM_XSD_2001 = new QName(NS_URI_XSD_2001, ELEM_SCHEMA);
+    public static final List<QName> XSD_QNAME_LIST =
+        Arrays.asList(new QName[] {Q_ELEM_XSD_1999, Q_ELEM_XSD_2000, Q_ELEM_XSD_2001});
+    
+    // ---- Policy WSDL Attachments
+    
+    public static final QName Q_POLICY_ATTRIBUTE_EXTENSION = new QName("http://www.osoa.org/xmlns/sca/1.0", "requires");
+    public static final QName Q_POLICY_END_CONVERSATION_ATTRIBUTE_EXTENSION = new QName("http://www.osoa.org/xmlns/sca/1.0", "endsConversation");
+    
+    // ---- Stuff added for BPEL extension elements ---  Mike Edwards 01/05/2008
+    public static final String ELEM_PLINKTYPE = "partnerLinkType";
+    public static final String NS_BPEL_1_1 = "http://schemas.xmlsoap.org/ws/2004/03/partner-link/";
+    public static final QName BPEL_PLINKTYPE = new QName( NS_BPEL_1_1, ELEM_PLINKTYPE );
+    // ---- end of BPEL extension stuff
+
+    private Contribution contribution;
+    private Map<String, List<WSDLDefinition>> map = new HashMap<String, List<WSDLDefinition>>();
+
+    private ExtensionRegistry wsdlExtensionRegistry;
+
+    private WSDLFactory wsdlFactory;
+    private javax.wsdl.factory.WSDLFactory wsdl4jFactory;
+    private ContributionFactory contributionFactory;
+    private XSDFactory xsdFactory;
+
+    public WSDLModelResolver(Contribution contribution, ModelFactoryExtensionPoint modelFactories) {
+        this.contribution = contribution;
+
+        this.wsdlFactory = modelFactories.getFactory(WSDLFactory.class);
+        this.wsdl4jFactory = modelFactories.getFactory(javax.wsdl.factory.WSDLFactory.class);
+        this.contributionFactory = modelFactories.getFactory(ContributionFactory.class);
+        this.xsdFactory = modelFactories.getFactory(XSDFactory.class);
+
+        wsdlExtensionRegistry = this.wsdl4jFactory.newPopulatedExtensionRegistry();
+        // REVIEW: [rfeng] Disable the schema extension for WSDL4J to avoid aggressive loading 
+        ExtensionDeserializer deserializer = new UnknownExtensionDeserializer();
+        ExtensionSerializer serializer = new UnknownExtensionSerializer();
+        for (QName schema : XSD_QNAME_LIST) {
+            wsdlExtensionRegistry.registerSerializer(Types.class, schema, serializer);
+            wsdlExtensionRegistry.registerDeserializer(Types.class, schema, deserializer);
+        }
+        // ---- Policy WSDL Extensions
+        wsdlExtensionRegistry.registerExtensionAttributeType(PortType.class, Q_POLICY_ATTRIBUTE_EXTENSION, AttributeExtensible.LIST_OF_QNAMES_TYPE);
+        wsdlExtensionRegistry.registerExtensionAttributeType(Operation.class, Q_POLICY_END_CONVERSATION_ATTRIBUTE_EXTENSION, AttributeExtensible.STRING_TYPE);
+        
+        // ---- BPEL additions
+        serializer = new BPELExtensionHandler();
+        deserializer = new BPELExtensionHandler();
+        wsdlExtensionRegistry.registerSerializer(Definition.class, BPEL_PLINKTYPE, serializer);
+        wsdlExtensionRegistry.registerDeserializer(Definition.class, BPEL_PLINKTYPE, deserializer);
+        // ---- end of BPEL additions
+    }
+
+    /**
+     * Implementation of a WSDL locator.
+     */
+    private class WSDLLocatorImpl implements WSDLLocator {
+        private InputStream inputStream;
+        private URL base;
+        private String latestImportURI;
+
+        public WSDLLocatorImpl(URL base, InputStream is) {
+            this.base = base;
+            this.inputStream = is;
+        }
+
+        public void close() {
+            try {
+                inputStream.close();
+            } catch (IOException e) {
+                // Ignore
+            }
+        }
+
+        public InputSource getBaseInputSource() {
+            try {
+                return XMLDocumentHelper.getInputSource(base, inputStream);
+            } catch (IOException e) {
+                throw new IllegalArgumentException(e);
+            }
+        }
+
+        public String getBaseURI() {
+            return base.toString();
+        }
+
+        public InputSource getImportInputSource(String parentLocation, String importLocation) {
+            try {
+                if (importLocation == null) {
+                    throw new IllegalArgumentException("Required attribute 'location' is missing.");
+                }
+
+                URL url = null;
+                if (importLocation.startsWith("/")) {
+                    // The URI is relative to the contribution
+                    String uri = importLocation.substring(1);
+
+                    Artifact proxyArtifact = contributionFactory.createArtifact();
+                    proxyArtifact.setURI(uri);
+
+                    //use contribution resolution (this supports import/export)
+                    Artifact importedArtifact =
+                        contribution.getModelResolver().resolveModel(Artifact.class, proxyArtifact);
+                    if (importedArtifact.getLocation() != null) {
+                        //get the artifact URL
+                        url = new URL(importedArtifact.getLocation());
+                    }
+                } else {
+                    url = new URL(new URL(parentLocation), importLocation);
+                }
+                if (url == null) {
+                    return null;
+                }
+                latestImportURI = url.toString();
+                return XMLDocumentHelper.getInputSource(url);
+            } catch (Exception e) {
+                throw new ContributionRuntimeException(e);
+            }
+        }
+
+        public String getLatestImportURI() {
+            return latestImportURI;
+        }
+
+    }
+
+    public void addModel(Object resolved) {
+        WSDLDefinition definition = (WSDLDefinition)resolved;
+        for (XSDefinition d : definition.getXmlSchemas()) {
+            if (contribution != null) {
+                contribution.getModelResolver().addModel(d);
+            }
+        }
+        List<WSDLDefinition> list = map.get(definition.getNamespace());
+        if (list == null) {
+            list = new ArrayList<WSDLDefinition>();
+            map.put(definition.getNamespace(), list);
+        }
+        list.add(definition);
+    }
+
+    public Object removeModel(Object resolved) {
+        WSDLDefinition definition = (WSDLDefinition)resolved;
+        List<WSDLDefinition> list = map.get(definition.getNamespace());
+        if (list == null) {
+            return null;
+        } else {
+            return list.remove(definition);
+        }
+    }
+
+    /**
+     * Create a facade Definition which imports all the definitions
+     * 
+     * @param definitions A list of the WSDL definitions under the same target namespace
+     * @return The aggregated WSDL definition
+     */
+    private WSDLDefinition aggregate(List<WSDLDefinition> definitions) {
+        if (definitions == null || definitions.size() == 0) {
+            return null;
+        }
+        if (definitions.size() == 1) {
+            WSDLDefinition d = definitions.get(0);
+            loadOnDemand(d);
+            return d;
+        }
+        WSDLDefinition aggregated = wsdlFactory.createWSDLDefinition();
+        for (WSDLDefinition d : definitions) {
+            loadOnDemand(d);
+        }
+        Definition facade = wsdl4jFactory.newDefinition();
+        String ns = definitions.get(0).getNamespace();
+        facade.setQName(new QName(ns, "$aggregated$"));
+        facade.setTargetNamespace(ns);
+
+        for (WSDLDefinition d : definitions) {
+            if (d.getDefinition() != null) {
+                javax.wsdl.Import imp = facade.createImport();
+                imp.setNamespaceURI(d.getNamespace());
+                imp.setDefinition(d.getDefinition());
+                imp.setLocationURI(d.getDefinition().getDocumentBaseURI());
+                facade.addImport(imp);
+                aggregated.getXmlSchemas().addAll(d.getXmlSchemas());
+                aggregated.getImportedDefinitions().add(d);
+            }
+        }
+        aggregated.setDefinition(facade);
+        definitions.clear();
+        definitions.add(aggregated);
+        return aggregated;
+    }
+
+    public <T> T resolveModel(Class<T> modelClass, T unresolved) {
+
+        // Lookup a definition for the given namespace
+        String namespace = ((WSDLDefinition)unresolved).getNamespace();
+        List<WSDLDefinition> list = map.get(namespace);
+        WSDLDefinition resolved = aggregate(list);
+        if (resolved != null && !resolved.isUnresolved()) {
+            return modelClass.cast(resolved);
+        }
+
+        // No definition found, delegate the resolution to the imports
+        for (Import import_ : this.contribution.getImports()) {
+            if (import_ instanceof NamespaceImport) {
+                NamespaceImport namespaceImport = (NamespaceImport)import_;
+                if (namespaceImport.getNamespace().equals(namespace)) {
+
+                    // Delegate the resolution to the namespace import resolver
+                    resolved =
+                        namespaceImport.getModelResolver().resolveModel(WSDLDefinition.class,
+                                                                        (WSDLDefinition)unresolved);
+                    if (!resolved.isUnresolved()) {
+                        return modelClass.cast(resolved);
+                    }
+                }
+            } else if (import_ instanceof DefaultImport) {
+                
+                // Delegate the resolution to the default import resolver
+                resolved =
+                    import_.getModelResolver().resolveModel(WSDLDefinition.class,
+                                                                    (WSDLDefinition)unresolved);
+                if (!resolved.isUnresolved()) {
+                    return modelClass.cast(resolved);
+                }
+            }
+        }
+        return modelClass.cast(unresolved);
+    }
+
+    /**
+     * Load the WSDL definition on demand
+     * @param def
+     */
+    private void loadOnDemand(WSDLDefinition def) {
+        if (def.getDefinition() == null && def.getLocation() != null) {
+            // Load the definition on-demand
+            try {
+                loadDefinition(def);
+            } catch (ContributionReadException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    // private Map<String, WSDLDefinition> loadedDefinitions = new Hashtable<String, WSDLDefinition>();
+
+    /**
+     * Load the WSDL definition and inline schemas
+     * 
+     * @param wsdlDef
+     * @throws ContributionReadException
+     */
+    private void loadDefinition(WSDLDefinition wsdlDef) throws ContributionReadException {
+        if (wsdlDef.getDefinition() != null || wsdlDef.getLocation() == null) {
+            return;
+        }
+        try {
+            URL artifactURL = wsdlDef.getLocation().toURL();
+            // Read a WSDL document
+            InputStream is = artifactURL.openStream();
+            WSDLReader reader = wsdl4jFactory.newWSDLReader();
+            reader.setFeature("javax.wsdl.verbose", false);
+            reader.setFeature("javax.wsdl.importDocuments", true);
+            // FIXME: We need to decide if we should disable the import processing by WSDL4J
+            // reader.setFeature("javax.wsdl.importDocuments", false);
+            reader.setExtensionRegistry(wsdlExtensionRegistry);
+
+            WSDLLocatorImpl locator = new WSDLLocatorImpl(artifactURL, is);
+            Definition definition = reader.readWSDL(locator);
+            wsdlDef.setDefinition(definition);
+
+            //Read inline schemas 
+            readInlineSchemas(wsdlDef, definition);
+        } catch (WSDLException e) {
+            throw new ContributionReadException(e);
+        } catch (IOException e) {
+            throw new ContributionReadException(e);
+        }
+    }
+
+    private Document promote(Element element) {
+        Document doc = (Document)element.getOwnerDocument().cloneNode(false);
+        Element schema = (Element)doc.importNode(element, true);
+        doc.appendChild(schema);
+        Node parent = element.getParentNode();
+        while (parent instanceof Element) {
+            Element root = (Element)parent;
+            NamedNodeMap nodeMap = root.getAttributes();
+            if (nodeMap != null) {
+                for (int i = 0; i < nodeMap.getLength(); i++) {
+                    Attr attr = (Attr)nodeMap.item(i);
+                    String name = attr.getName();
+                    if ("xmlns".equals(name) || name.startsWith("xmlns:")) {
+                        if (schema.getAttributeNode(name) == null) {
+                            schema.setAttributeNodeNS((Attr)doc.importNode(attr, true));
+                        }
+                    }
+                }
+            }    
+            parent = parent.getParentNode();
+        }
+        doc.setDocumentURI(element.getOwnerDocument().getDocumentURI());
+        return doc;
+    }
+
+    /**
+     * Populate the inline schemas including those from the imported definitions
+     * 
+     * @param definition
+     * @param schemaCollection
+     */
+    private void readInlineSchemas(WSDLDefinition wsdlDefinition, Definition definition) {
+        if (contribution == null) {
+            // Check null for test cases
+            return;
+        }
+        Types types = definition.getTypes();
+        if (types != null) {
+            int index = 0;
+            for (Object ext : types.getExtensibilityElements()) {
+                ExtensibilityElement extElement = (ExtensibilityElement)ext;
+                Element element = null;
+                if (XSD_QNAME_LIST.contains(extElement.getElementType())) {
+                    if (extElement instanceof Schema) {
+                        element = ((Schema)extElement).getElement();
+                    } else if (extElement instanceof UnknownExtensibilityElement) {
+                        element = ((UnknownExtensibilityElement)extElement).getElement();
+                    }
+                }
+                if (element != null) {
+                    Document doc = promote(element);
+                    XSDefinition xsDefinition = xsdFactory.createXSDefinition();
+                    xsDefinition.setUnresolved(true);
+                    xsDefinition.setNamespace(element.getAttribute("targetNamespace"));
+                    xsDefinition.setDocument(doc);
+                    xsDefinition.setLocation(URI.create(doc.getDocumentURI() + "#" + index));
+                    XSDefinition resolved =
+                        contribution.getModelResolver().resolveModel(XSDefinition.class, xsDefinition);
+                    if (resolved != null && !resolved.isUnresolved()) {
+                        if (!wsdlDefinition.getXmlSchemas().contains(resolved)) {
+                            wsdlDefinition.getXmlSchemas().add(xsDefinition);
+                        }
+                    }
+                    index++;
+                }
+            }
+        }
+        for (Object imports : definition.getImports().values()) {
+            List impList = (List)imports;
+            for (Object i : impList) {
+                javax.wsdl.Import anImport = (javax.wsdl.Import)i;
+                // Read inline schemas 
+                if (anImport.getDefinition() != null) {
+                    readInlineSchemas(wsdlDefinition, anImport.getDefinition());
+                }
+            }
+        }
+    }
+
+}
diff --git a/java/sca/modules/interface-wsdl-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor b/java/sca/modules/interface-wsdl-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor
new file mode 100644
index 0000000000..9666a6dbd8
--- /dev/null
+++ b/java/sca/modules/interface-wsdl-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor
@@ -0,0 +1,19 @@
+# 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. 
+
+# Implementation class for the artifact processor extension
+org.apache.tuscany.sca.interfacedef.wsdl.xml.WSDLInterfaceProcessor;qname=http://www.osoa.org/xmlns/sca/1.0#interface.wsdl,model=org.apache.tuscany.sca.interfacedef.wsdl.WSDLInterfaceContract
diff --git a/java/sca/modules/interface-wsdl-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor b/java/sca/modules/interface-wsdl-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor
new file mode 100644
index 0000000000..553c764233
--- /dev/null
+++ b/java/sca/modules/interface-wsdl-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.processor.URLArtifactProcessor
@@ -0,0 +1,19 @@
+# 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. 
+
+# Implementation class for the artifact processor extension
+org.apache.tuscany.sca.interfacedef.wsdl.xml.WSDLDocumentProcessor;type=.wsdl,model=org.apache.tuscany.sca.interfacedef.wsdl.WSDLDefinition
diff --git a/java/sca/modules/interface-wsdl-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resolver.ModelResolver b/java/sca/modules/interface-wsdl-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resolver.ModelResolver
new file mode 100644
index 0000000000..30d2039e80
--- /dev/null
+++ b/java/sca/modules/interface-wsdl-xml/src/main/resources/META-INF/services/org.apache.tuscany.sca.contribution.resolver.ModelResolver
@@ -0,0 +1,18 @@
+# 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. 
+
+org.apache.tuscany.sca.interfacedef.wsdl.xml.WSDLModelResolver;model=org.apache.tuscany.sca.interfacedef.wsdl.WSDLDefinition
diff --git a/java/sca/modules/interface-wsdl-xml/src/main/resources/interface-wsdlxml-validation-messages.properties b/java/sca/modules/interface-wsdl-xml/src/main/resources/interface-wsdlxml-validation-messages.properties
new file mode 100644
index 0000000000..2f8c3e0500
--- /dev/null
+++ b/java/sca/modules/interface-wsdl-xml/src/main/resources/interface-wsdlxml-validation-messages.properties
@@ -0,0 +1,24 @@
+#
+#
+#    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.
+#
+#
+ContributionReadException = ContributionReadException occured due to :
+ContributionResolveException = ContributionResolveException occured due to :
+InvalidWSDLInterfaceAttr = Invalid WSDL interface attribute: {0}
+WsdlInterfaceDoesNotMatch = The #wsdl.interface({0}) specified does not match with WSDL Definitions
\ No newline at end of file