1 files changed, 157 insertions, 0 deletions
diff --git a/sandbox/dougsleite/policy-resolutiontrees/src/main/java/org/apache/tuscany/sca/policy/resolutiontrees/ResolutionTreesPolicyProcessor.java b/sandbox/dougsleite/policy-resolutiontrees/src/main/java/org/apache/tuscany/sca/policy/resolutiontrees/ResolutionTreesPolicyProcessor.java
new file mode 100644
index 0000000000..ef0f8e9cea
--- /dev/null
+++ b/sandbox/dougsleite/policy-resolutiontrees/src/main/java/org/apache/tuscany/sca/policy/resolutiontrees/ResolutionTreesPolicyProcessor.java
@@ -0,0 +1,157 @@
+/*
+ * 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.policy.resolutiontrees;
+
+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.axiom.om.OMAbstractFactory;
+import org.apache.axiom.om.OMElement;
+import org.apache.axiom.om.OMFactory;
+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.guardian.Constants;
+import org.apache.tuscany.sca.contribution.ModelFactoryExtensionPoint;
+import org.apache.tuscany.sca.monitor.Monitor;
+
+public class ResolutionTreesPolicyProcessor implements StAXArtifactProcessor<ResolutionTreesPolicy>, Constants {
+
+    private static final QName RESOLUTION_TREES_POLICY_QNAME = ResolutionTreesPolicy.RESOLUTION_TREES_POLICY_QNAME;
+
+    public ResolutionTreesPolicyProcessor(ModelFactoryExtensionPoint modelFactories, Monitor monitor) {
+    }
+
+    public ResolutionTreesPolicy read(XMLStreamReader reader) throws ContributionReadException, XMLStreamException {
+
+        ResolutionTreesPolicy policy = new ResolutionTreesPolicy();
+        QName name = null;
+        String ruleName = null;
+        OMElement ruleElement = null;
+        while (reader.hasNext()) {
+
+            if (reader.isStartElement()) {
+
+                name = reader.getName();
+                if (RESOLUTION_TREE.equals(name.getLocalPart())) {
+
+                    ruleName = reader.getAttributeValue(null, Constants.EXCEPTION_LEVEL);
+                    ruleElement = loadElement(reader);
+
+                    policy.getResolutionTreeElements().put(ruleName, ruleElement);
+                }
+            } else if (reader.isEndElement()) {
+                if (RESOLUTION_TREES_POLICY_QNAME.equals(reader.getName())) {
+                    break;
+                }
+            }
+
+            reader.next();
+        }
+
+        return policy;
+    }
+
+    public void write(ResolutionTreesPolicy policy, XMLStreamWriter writer) throws ContributionWriteException, XMLStreamException {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+    public QName getArtifactType() {
+        return RESOLUTION_TREES_POLICY_QNAME;
+    }
+
+    public void resolve(ResolutionTreesPolicy arg0, ModelResolver arg1) throws ContributionResolveException {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+    public Class<ResolutionTreesPolicy> getModelType() {
+        return ResolutionTreesPolicy.class;
+    }
+
+    private OMElement loadElement(XMLStreamReader reader) throws XMLStreamException {
+        OMFactory fac = OMAbstractFactory.getOMFactory();
+        OMElement head = fac.createOMElement(reader.getName());
+
+        //Load the attributes for the rule tag
+        loadAttributes(reader, head, fac);
+
+        OMElement current = head;
+        while (true) {
+
+            switch (reader.next()) {
+                case XMLStreamConstants.START_ELEMENT:
+
+                    QName name = new QName(reader.getName().getLocalPart());
+                    OMElement child = fac.createOMElement(name, current);
+
+                    int count = reader.getNamespaceCount();
+                    for (int i = 0; i < count; i++) {
+                        String prefix = reader.getNamespacePrefix(i);
+                        String ns = reader.getNamespaceURI(i);
+                        child.declareNamespace(ns, prefix);
+                    }
+
+                    if (!"".equals(name.getNamespaceURI())) {
+                        child.declareNamespace(name.getNamespaceURI(), name.getPrefix());
+                    }
+
+                    // add the attributes for this element
+                    loadAttributes(reader, child, fac);
+                    current = child;
+                    break;
+                case XMLStreamConstants.CDATA:
+                    fac.createOMText(current, reader.getText());
+                    break;
+                case XMLStreamConstants.CHARACTERS:
+                    String text = reader.getText().trim();
+                    if (text.length() != 0) {
+                        fac.createOMText(current, reader.getText());
+                    }
+                    break;
+                case XMLStreamConstants.END_ELEMENT:
+                    if (current == head) {
+                        return head;
+                    } else {
+                        current = (OMElement) current.getParent();
+                    }
+            }
+        }
+    }
+
+    private void loadAttributes(XMLStreamReader reader, OMElement elem, OMFactory fac) {
+        int count = reader.getAttributeCount();
+        for (int i = 0; i < count; i++) {
+            String ns = reader.getAttributeNamespace(i);
+            String prefix = reader.getAttributePrefix(i);
+            String qname = reader.getAttributeLocalName(i);
+            String value = reader.getAttributeValue(i);
+
+            if (ns != null) {
+                elem.addAttribute(qname, value, fac.createOMNamespace(ns, prefix));
+                elem.declareNamespace(ns, prefix);
+            } else {
+                elem.addAttribute(qname, value, null);
+            }
+        }
+    }
+}