1 files changed, 197 insertions, 0 deletions
diff --git a/tags/java/sca/2.0-M3-RC3a/modules/interface-java/src/main/java/org/apache/tuscany/sca/interfacedef/java/xml/JavaInterfaceProcessor.java b/tags/java/sca/2.0-M3-RC3a/modules/interface-java/src/main/java/org/apache/tuscany/sca/interfacedef/java/xml/JavaInterfaceProcessor.java
new file mode 100644
index 0000000000..1eb38592b7
--- /dev/null
+++ b/tags/java/sca/2.0-M3-RC3a/modules/interface-java/src/main/java/org/apache/tuscany/sca/interfacedef/java/xml/JavaInterfaceProcessor.java
@@ -0,0 +1,197 @@
+/*
+ * 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.java.xml;
+
+import static javax.xml.stream.XMLStreamConstants.END_ELEMENT;
+
+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.contribution.processor.ContributionReadException;
+import org.apache.tuscany.sca.contribution.processor.ContributionResolveException;
+import org.apache.tuscany.sca.contribution.processor.ContributionWriteException;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.resolver.ClassReference;
+import org.apache.tuscany.sca.contribution.resolver.ModelResolver;
+import org.apache.tuscany.sca.core.FactoryExtensionPoint;
+import org.apache.tuscany.sca.interfacedef.InvalidInterfaceException;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceContract;
+import org.apache.tuscany.sca.interfacedef.java.JavaInterfaceFactory;
+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 JavaInterfaceProcessor implements StAXArtifactProcessor<JavaInterfaceContract>, JavaConstants {
+    private static final String SCA11_NS = "http://docs.oasis-open.org/ns/opencsa/sca/200903";
+    private JavaInterfaceFactory javaFactory;
+    private Monitor monitor;
+
+    public JavaInterfaceProcessor(FactoryExtensionPoint modelFactories, Monitor monitor) {
+        this.javaFactory = modelFactories.getFactory(JavaInterfaceFactory.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 = monitor.createProblem(this.getClass().getName(), "interface-javaxml-validation-messages", Severity.ERROR, model, message, ex);
+    	     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 = monitor.createProblem(this.getClass().getName(), "interface-javaxml-validation-messages", Severity.ERROR, model, message,(Object[])messageParameters);
+     	     monitor.problem(problem);
+     	 }        
+     }
+    
+    private JavaInterface createJavaInterface(String interfaceName) {
+        JavaInterface javaInterface = javaFactory.createJavaInterface();
+        javaInterface.setUnresolved(true);
+        javaInterface.setName(interfaceName);
+        return javaInterface;
+    }
+
+    public JavaInterfaceContract read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+        
+        // Read an <interface.java>
+        JavaInterfaceContract javaInterfaceContract = javaFactory.createJavaInterfaceContract();
+        String interfaceName = reader.getAttributeValue(null, INTERFACE);
+        if (interfaceName != null) {
+            JavaInterface javaInterface = createJavaInterface(interfaceName);
+            javaInterfaceContract.setInterface(javaInterface);
+        }
+
+        String callbackInterfaceName = reader.getAttributeValue(null, CALLBACK_INTERFACE);
+        if (callbackInterfaceName != null) {
+            JavaInterface javaCallbackInterface = createJavaInterface(callbackInterfaceName);
+            javaInterfaceContract.setCallbackInterface(javaCallbackInterface);
+        }
+
+        // Skip to end element
+        while (reader.hasNext()) {
+            if (reader.next() == END_ELEMENT && INTERFACE_JAVA_QNAME.equals(reader.getName())) {
+                break;
+            }
+        }
+        return javaInterfaceContract;
+    }
+    
+    public void write(JavaInterfaceContract javaInterfaceContract, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
+        
+        // Write an <interface.java>
+        writer.writeStartElement(SCA11_NS, INTERFACE_JAVA);
+        JavaInterface javaInterface = (JavaInterface)javaInterfaceContract.getInterface();
+        
+        if (javaInterface != null && javaInterface.getName() != null) {
+            writer.writeAttribute(INTERFACE, javaInterface.getName());
+        }
+        
+        JavaInterface javaCallbackInterface = (JavaInterface)javaInterfaceContract.getCallbackInterface();
+        if (javaCallbackInterface != null && javaCallbackInterface.getName() != null) {
+            writer.writeAttribute(CALLBACK_INTERFACE, javaCallbackInterface.getName());
+        }
+        
+        writer.writeEndElement();
+    }
+    
+    private JavaInterface resolveJavaInterface(JavaInterface javaInterface, ModelResolver resolver) throws ContributionResolveException {
+        
+        if (javaInterface != null && javaInterface.isUnresolved()) {
+
+            // Resolve the Java interface
+            javaInterface = resolver.resolveModel(JavaInterface.class, javaInterface);
+            if (javaInterface.isUnresolved()) {
+
+                // If the Java interface has never been resolved yet, do it now
+                ClassReference classReference = new ClassReference(javaInterface.getName());
+                classReference = resolver.resolveModel(ClassReference.class, classReference);
+                Class<?> javaClass = classReference.getJavaClass();
+                if (javaClass == null) {
+                    error("ClassNotFoundException", resolver, javaInterface.getName());
+                    return javaInterface;
+                    //throw new ContributionResolveException(new ClassNotFoundException(javaInterface.getName()));
+                }
+                
+                try {                        
+                    // Introspect the Java interface and populate the interface and
+                    // operations
+                    javaFactory.createJavaInterface(javaInterface, javaClass);
+                
+                } catch (InvalidInterfaceException e) {
+                	ContributionResolveException ce = new ContributionResolveException("Resolving Java interface " + javaInterface.getName(), e);
+                	//error("ContributionResolveException", javaFactory, ce);
+                	error("InvalidInterfaceException", javaFactory, e);
+                    return javaInterface;
+                	//throw ce;
+                } catch ( Exception e ) {
+                	throw new ContributionResolveException( "Resolving Java interface " + javaInterface.getName(), e );
+                } // end try
+
+                // Cache the resolved interface
+                javaInterface.setUnresolved(false);
+                resolver.addModel(javaInterface);
+            }
+        }
+        return javaInterface;
+    }
+    
+    public void resolve(JavaInterfaceContract javaInterfaceContract, ModelResolver resolver) throws ContributionResolveException {
+        try {
+	        // Resolve the interface and callback interface
+	        JavaInterface javaInterface = resolveJavaInterface((JavaInterface)javaInterfaceContract.getInterface(), resolver);
+	        javaInterfaceContract.setInterface(javaInterface);
+	        
+	        JavaInterface javaCallbackInterface = resolveJavaInterface((JavaInterface)javaInterfaceContract.getCallbackInterface(), resolver);
+	        javaInterfaceContract.setCallbackInterface(javaCallbackInterface);
+        } catch (Exception e) {
+        	throw new ContributionResolveException( "Resolving Java Interface " + javaInterfaceContract.getInterface().toString(), e );
+        } // end try
+    }
+    
+    public QName getArtifactType() {
+        return INTERFACE_JAVA_QNAME;
+    }
+    
+    public Class<JavaInterfaceContract> getModelType() {
+        return JavaInterfaceContract.class;
+    }
+}