1 files changed, 86 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/Utils.java b/sca-java-2.x/tags/2.0.1-RC1/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/Utils.java
new file mode 100644
index 0000000000..694621fa24
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/assembly-xml/src/main/java/org/apache/tuscany/sca/assembly/xml/Utils.java
@@ -0,0 +1,86 @@
+/*
+ * 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.assembly.xml;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.StringWriter;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import org.apache.tuscany.sca.assembly.Base;
+import org.apache.tuscany.sca.common.xml.stax.StAXHelper;
+import org.apache.tuscany.sca.contribution.processor.ContributionWriteException;
+import org.apache.tuscany.sca.contribution.processor.ExtensibleStAXArtifactProcessor;
+import org.apache.tuscany.sca.contribution.processor.ProcessorContext;
+import org.apache.tuscany.sca.contribution.processor.StAXArtifactProcessorExtensionPoint;
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.w3c.dom.Document;
+import org.w3c.dom.ls.DOMImplementationLS;
+import org.w3c.dom.ls.LSOutput;
+import org.w3c.dom.ls.LSSerializer;
+import org.xml.sax.SAXException;
+
+public class Utils {
+    
+    /**
+     * Helper method to get the XML string for a model object.
+     */
+    public static String modelToXML(Base model, boolean pretty, ExtensionPointRegistry extensionPointRegistry) {
+        try {
+            StAXHelper stAXHelper = StAXHelper.getInstance(extensionPointRegistry);
+            StAXArtifactProcessorExtensionPoint staxProcessors = extensionPointRegistry.getExtensionPoint(StAXArtifactProcessorExtensionPoint.class);
+            ExtensibleStAXArtifactProcessor staxProcessor = new ExtensibleStAXArtifactProcessor(staxProcessors, null, stAXHelper.getOutputFactory());
+            ByteArrayOutputStream bos = new ByteArrayOutputStream();
+            staxProcessor.write(model, bos, new ProcessorContext(extensionPointRegistry));
+            bos.close();
+
+            if (!pretty) {
+                return bos.toString();
+            }
+
+            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
+            DocumentBuilder parser = factory.newDocumentBuilder();
+            Document document = parser.parse(new ByteArrayInputStream(bos.toByteArray()));        
+            
+            DOMImplementationLS domImplementationLS = (DOMImplementationLS) document.getImplementation().getFeature("LS", "3.0");
+            LSSerializer lsSerializer = domImplementationLS.createLSSerializer();
+            lsSerializer.getDomConfig().setParameter("format-pretty-print", Boolean.TRUE);
+            LSOutput lsOutput = domImplementationLS.createLSOutput();
+            lsOutput.setEncoding("UTF-8");
+            StringWriter stringWriter = new StringWriter();
+            lsOutput.setCharacterStream(stringWriter);
+            lsSerializer.write(document, lsOutput);
+            return stringWriter.toString();
+
+        } catch (ContributionWriteException e) {
+            throw new RuntimeException(e);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        } catch (SAXException e) {
+            throw new RuntimeException(e);
+        } catch (ParserConfigurationException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}