1 files changed, 271 insertions, 0 deletions
diff --git a/sandbox/sebastien/java/sca-node/modules/implementation-das/src/main/java/org/apache/tuscany/sca/implementation/das/DASImplementationProcessor.java b/sandbox/sebastien/java/sca-node/modules/implementation-das/src/main/java/org/apache/tuscany/sca/implementation/das/DASImplementationProcessor.java
new file mode 100644
index 0000000000..0e90c90082
--- /dev/null
+++ b/sandbox/sebastien/java/sca-node/modules/implementation-das/src/main/java/org/apache/tuscany/sca/implementation/das/DASImplementationProcessor.java
@@ -0,0 +1,271 @@
+/*
+ * 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.implementation.das;
+
+import static javax.xml.stream.XMLStreamConstants.START_ELEMENT;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import javax.xml.namespace.QName;
+import javax.xml.stream.XMLStreamConstants;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+import javax.xml.stream.XMLStreamWriter;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.assembly.ComponentType;
+import org.apache.tuscany.sca.assembly.Property;
+import org.apache.tuscany.sca.assembly.Service;
+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.data.engine.ConnectionInfoArtifactProcessor;
+import org.apache.tuscany.sca.data.engine.config.ConnectionInfo;
+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;
+
+
+/**
+ * Implements a StAX artifact processor for DAS implementations.
+ * 
+ * The artifact processor is responsible for processing <implementation.das>
+ * elements in SCA assembly XML composite files and populating the DAS
+ * implementation model, resolving its references to other artifacts in the SCA
+ * contribution, and optionally write the model back to SCA assembly XML.
+ * 
+ * @version $Rev$ $Date$
+ */
+public class DASImplementationProcessor implements StAXArtifactProcessor<DASImplementation> {
+    private static final QName IMPLEMENTATION_DAS = new QName(Constants.SCA10_TUSCANY_NS, "implementation.das");
+    
+    private DASImplementationFactory dasFactory;
+    
+    private final AssemblyFactory assemblyFactory;
+    private final JavaInterfaceFactory javaFactory;
+    private Monitor monitor;
+    private StAXArtifactProcessor<ConnectionInfo> connectionInfoProcessor;
+    
+    public DASImplementationProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) {
+        assemblyFactory = modelFactories.getFactory(AssemblyFactory.class);
+        javaFactory = modelFactories.getFactory(JavaInterfaceFactory.class);
+        this.monitor = monitor;
+        this.dasFactory = new DefaultDASImplementationFactory(assemblyFactory, javaFactory);        
+        this.connectionInfoProcessor = new ConnectionInfoArtifactProcessor(modelFactories, this.monitor);
+    }
+
+    public QName getArtifactType() {
+        // Returns the QName of the XML element processed by this processor
+        return IMPLEMENTATION_DAS;
+    }
+
+    public Class<DASImplementation> getModelType() {
+        // Returns the type of model processed by this processor
+        return DASImplementation.class;
+    }
+    
+    /**
+     * 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(), "impl-das-validation-messages", Severity.ERROR, model, message, (Object[])messageParameters);
+            monitor.problem(problem);
+        }
+    }
+
+    /*
+     * <component name="CompanyDataComponent">
+     *   <implementation.das config="/CompanyConfig.xml" dataAccessType="rdb">
+     *      <connectionInfo>
+     *         <connectionProperties 
+     *          driverClass="org.apache.derby.jdbc.EmbeddedDriver" 
+     *          databaseURL="jdbc:derby:target/test-classes/dastest; create = true" 
+     *          loginTimeout="600000"/>
+     *      </connectionInfo>
+     *   </implementation.data>
+     * </component>
+     */
+    public DASImplementation read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+        assert IMPLEMENTATION_DAS.equals(reader.getName());
+
+        // Read an <implementation.das> element
+        
+        // Create an initialize the DAS implementation model
+        DASImplementation implementation = null;
+
+        // Read the das config file attribute.
+        // This is das configuration side file to use
+        String config = reader.getAttributeValue(null, "config");        
+
+        // Read the data access type attribute
+        // This is the type of data store in use (e.g RDB, XML, etc)
+        String dataAccessType = reader.getAttributeValue(null, "dataAccessType");        
+        
+        // Both config and dataAccessType are required attributes, hence validating.
+        if (config == null || dataAccessType == null) {
+            if (config == null) 
+                error("ConfigAttributeMissing", reader);
+            if (dataAccessType == null) 
+                error("DataAccessTypeAttributeMissing", reader);
+            return implementation;
+        }
+
+        // Create an initialize the DAS implementation model
+        implementation = dasFactory.createDASImplementation();
+        implementation.setConfig(config);
+        implementation.setDataAccessType(dataAccessType);
+        implementation.setUnresolved(true);
+
+        while (true) {
+            int event = reader.next();
+            switch (event) {
+
+            case START_ELEMENT:
+                if (ConnectionInfoArtifactProcessor.CONNECTION_INFO.equals(reader.getName())) {
+
+                    // Read connection info
+                    ConnectionInfo connectionInfo = (ConnectionInfo) connectionInfoProcessor.read(reader);
+                    implementation.setConnectionInfo(connectionInfo);
+                }
+                break;
+            case XMLStreamConstants.END_ELEMENT:
+                if (IMPLEMENTATION_DAS.equals(reader.getName())) {
+                    return implementation;
+                }
+                break;
+            }
+        }
+    }
+
+    public void resolve(DASImplementation impl, ModelResolver resolver) throws ContributionResolveException {
+        if( impl != null && impl.isUnresolved()) {
+            //resolve component type
+            mergeComponentType(resolver, impl);
+                        
+            //set current implementation resolved 
+            impl.setUnresolved(false);
+        }
+    }
+
+    public void write(DASImplementation implementation, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
+        
+        writer.writeStartElement(IMPLEMENTATION_DAS.getNamespaceURI(), IMPLEMENTATION_DAS.getLocalPart());
+        
+        if (implementation.getConfig() != null) {
+            writer.writeAttribute("config", implementation.getConfig());
+        }
+        if (implementation.getDataAccessType() != null) {
+            writer.writeAttribute("dataAccessType", implementation.getDataAccessType());
+        }
+        
+        if (implementation.getConnectionInfo() != null) { 
+            connectionInfoProcessor.write(implementation.getConnectionInfo(), writer);
+        }
+        
+        writer.writeEndElement();
+    }
+    
+    /**
+     * Merge the componentType from introspection and external file
+     * @param resolver
+     * @param impl
+     */
+    private void mergeComponentType(ModelResolver resolver, DASImplementation impl) {
+        // FIXME: Need to clarify how to merge
+        ComponentType componentType = getComponentType(resolver, impl);
+        if (componentType != null && !componentType.isUnresolved()) {
+            /*
+            Map<String, Reference> refMap = new HashMap<String, Reference>();
+            for (Reference ref : impl.getReferences()) {
+                refMap.put(ref.getName(), ref);
+            }
+            for (Reference reference : componentType.getReferences()) {
+                refMap.put(reference.getName(), reference);
+            }
+            impl.getReferences().clear();
+            impl.getReferences().addAll(refMap.values());
+
+            // Try to match references by type
+            Map<String, JavaElementImpl> refMembers = impl.getReferenceMembers();
+            for (Reference ref : impl.getReferences()) {
+                if (ref.getInterfaceContract() != null) {
+                    Interface i = ref.getInterfaceContract().getInterface();
+                    if (i instanceof JavaInterface) {
+                        Class<?> type = ((JavaInterface)i).getJavaClass();
+                        if (!refMembers.containsKey(ref.getName())) {
+                            JavaElementImpl e = getMemeber(impl, ref.getName(), type);
+                            if (e != null) {
+                                refMembers.put(ref.getName(), e);
+                            }
+                        }
+                    }
+                }
+            }*/
+
+            Map<String, Service> serviceMap = new HashMap<String, Service>();
+            for (Service svc : impl.getServices()) {
+                if(svc != null) {
+                    serviceMap.put(svc.getName(), svc);    
+                }
+            }
+            for (Service service : componentType.getServices()) {                
+                serviceMap.put(service.getName(), service);
+            }
+            impl.getServices().clear();
+            impl.getServices().addAll(serviceMap.values());
+
+            Map<String, Property> propMap = new HashMap<String, Property>();
+            for (Property prop : impl.getProperties()) {
+                propMap.put(prop.getName(), prop);
+            }
+        }
+    }
+
+    private String getFileName(String filePath) {
+        int pos = filePath.lastIndexOf(".");
+        
+        return filePath.substring(0, pos);
+        
+    }
+    
+    private ComponentType getComponentType(ModelResolver resolver, DASImplementation impl) {
+        String dasConfig = this.getFileName(impl.getConfig());
+        String componentTypeURI = dasConfig.replace('.', '/') + ".componentType";
+        ComponentType componentType = assemblyFactory.createComponentType();
+        componentType.setUnresolved(true);
+        componentType.setURI(componentTypeURI);
+        componentType = resolver.resolveModel(ComponentType.class, componentType);
+        if (!componentType.isUnresolved()) {
+            return componentType;
+        }
+        return null;
+    }
+}