1 files changed, 108 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-1.0/modules/contribution-impl/src/main/java/org/apache/tuscany/sca/contribution/service/impl/ContributionMetadataDocumentProcessor.java b/sca-java-1.x/branches/sca-java-1.0/modules/contribution-impl/src/main/java/org/apache/tuscany/sca/contribution/service/impl/ContributionMetadataDocumentProcessor.java
new file mode 100644
index 0000000000..8189914ffb
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+++ b/sca-java-1.x/branches/sca-java-1.0/modules/contribution-impl/src/main/java/org/apache/tuscany/sca/contribution/service/impl/ContributionMetadataDocumentProcessor.java
@@ -0,0 +1,108 @@
+/*
+ * 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.service.impl;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.net.URLClassLoader;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import javax.xml.stream.XMLInputFactory;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+
+import org.apache.tuscany.sca.assembly.AssemblyFactory;
+import org.apache.tuscany.sca.contribution.Contribution;
+import org.apache.tuscany.sca.contribution.ContributionFactory;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.service.ContributionReadException;
+
+/**
+ * MetadataDocumentProcessor that handles contribution metadata files
+ * 
+ * @version $Rev$ $Date$
+ */
+public class ContributionMetadataDocumentProcessor {
+    protected final URLClassLoader classLoader;
+    protected final StAXArtifactProcessor staxProcessor;
+    protected final AssemblyFactory assemblyFactory;
+    protected final ContributionFactory contributionFactory;
+    protected final XMLInputFactory inputFactory;
+
+    public ContributionMetadataDocumentProcessor(URLClassLoader classLoader, StAXArtifactProcessor staxProcessor, AssemblyFactory assemblyFactory, ContributionFactory contributionFactory, XMLInputFactory inputFactory) {
+        super();
+        this.classLoader = classLoader;
+        this.staxProcessor = staxProcessor; 
+        this.assemblyFactory = assemblyFactory;
+        this.contributionFactory = contributionFactory;
+        this.inputFactory = inputFactory;
+    }
+
+    private Contribution mergeContributionMetadata(Contribution contrib1, Contribution contrib2  ) {
+        contrib1.getDeployables().addAll(contrib2.getDeployables());
+        contrib1.getImports().addAll(contrib2.getImports());
+        contrib1.getExports().addAll(contrib2.getExports());
+        
+        return contrib1;
+    }
+    
+    public void read(Contribution contribution) throws XMLStreamException, ContributionReadException {
+        List<URL> artifactList = new ArrayList<URL>(2);
+        //set generated first, as the user created one ovverrides generated information
+        artifactList.add(this.classLoader.getResource(Contribution.SCA_CONTRIBUTION_GENERATED_META));
+        artifactList.add(this.classLoader.getResource(Contribution.SCA_CONTRIBUTION_META));
+        
+        URL artifactURL = null; 
+        InputStream artifactStream = null; 
+        Iterator artifactIterator = artifactList.iterator();
+        while( artifactIterator.hasNext() ){
+            
+            try {
+                artifactURL = (URL) artifactIterator.next();
+                if( artifactURL != null) {
+                    artifactStream = artifactURL.openStream();
+                    XMLStreamReader reader = inputFactory.createXMLStreamReader(artifactStream);
+                    reader.nextTag();
+                    
+                    Contribution contributionMetadata = (Contribution) staxProcessor.read(reader); 
+                    if (contributionMetadata != null) {
+                        this.mergeContributionMetadata(contribution, contributionMetadata);
+                    }
+                }
+                
+            } catch (XMLStreamException e) {
+                throw new ContributionReadException(e);
+            } catch (IOException e) {
+                throw new ContributionReadException(e);
+            } finally {
+                try {
+                    if (artifactStream != null) {
+                        artifactStream.close();
+                        artifactStream = null;
+                    }
+                } catch (IOException ioe) {
+                    //ignore
+                }
+            }
+        }
+    }
+}