1 files changed, 119 insertions, 0 deletions
diff --git a/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/PropertyUtils.java b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/PropertyUtils.java
new file mode 100644
index 0000000000..57c1e1b5f4
--- /dev/null
+++ b/sandbox/rfeng/minicore/src/main/java/org/apache/tuscany/core/loader/PropertyUtils.java
@@ -0,0 +1,119 @@
+/*
+ * 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.core.loader;
+
+import javax.xml.XMLConstants;
+import javax.xml.namespace.QName;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.stream.XMLStreamConstants;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.XMLStreamReader;
+
+import org.w3c.dom.Attr;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+
+/**
+ * @version $Rev$ $Date$
+ */
+public final class PropertyUtils {
+
+    private PropertyUtils() {
+    }
+
+    public static Document createPropertyValue(XMLStreamReader reader, QName type, DocumentBuilder builder)
+        throws XMLStreamException {
+        Document doc = builder.newDocument();
+
+        // root element has no namespace and local name "value"
+        Element root = doc.createElementNS(null, "value");
+        if (type != null) {
+            Attr xsi = doc.createAttributeNS(XMLConstants.XMLNS_ATTRIBUTE_NS_URI, "xmlns:xsi");
+            xsi.setValue(XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI);
+            root.setAttributeNodeNS(xsi);
+
+            String prefix = type.getPrefix();
+            if (prefix == null || prefix.length() == 0) {
+                prefix = "ns";
+            }
+            Attr typeXmlns = doc.createAttributeNS(XMLConstants.XMLNS_ATTRIBUTE_NS_URI, "xmlns:" + prefix);
+            typeXmlns.setValue(type.getNamespaceURI());
+            root.setAttributeNodeNS(typeXmlns);
+
+            Attr xsiType = doc.createAttributeNS(XMLConstants.W3C_XML_SCHEMA_INSTANCE_NS_URI, "xsi:type");
+            xsiType.setValue(prefix + ":" + type.getLocalPart());
+            root.setAttributeNodeNS(xsiType);
+        }
+        doc.appendChild(root);
+
+        loadPropertyValue(reader, root);
+        return doc;
+    }
+
+    /**
+     * Load a property value specification from an StAX stream into a DOM Document. Only elements, text and attributes
+     * are processed; all comments and other whitespace are ignored.
+     *
+     * @param reader the stream to read from
+     * @param root   the DOM node to load
+     * @throws javax.xml.stream.XMLStreamException
+     *
+     */
+    public static void loadPropertyValue(XMLStreamReader reader, Node root) throws XMLStreamException {
+        Document document = root.getOwnerDocument();
+        Node current = root;
+        while (true) {
+            switch (reader.next()) {
+                case XMLStreamConstants.START_ELEMENT:
+                    QName name = reader.getName();
+                    Element child = document.createElementNS(name.getNamespaceURI(), name.getLocalPart());
+
+                    // add the attributes for this element
+                    int count = reader.getAttributeCount();
+                    for (int i = 0; i < count; i++) {
+                        String ns = reader.getAttributeNamespace(i);
+                        String localPart = reader.getAttributeLocalName(i);
+                        String value = reader.getAttributeValue(i);
+                        child.setAttributeNS(ns, localPart, value);
+                    }
+
+                    // push the new element and make it the current one
+                    current.appendChild(child);
+                    current = child;
+                    break;
+                case XMLStreamConstants.CDATA:
+                    current.appendChild(document.createCDATASection(reader.getText()));
+                    break;
+                case XMLStreamConstants.CHARACTERS:
+                    current.appendChild(document.createTextNode(reader.getText()));
+                    break;
+                case XMLStreamConstants.END_ELEMENT:
+                    // if we are back at the root then we are done
+                    if (current == root) {
+                        return;
+                    }
+
+                    // pop the element off the stack
+                    current = current.getParentNode();
+            }
+        }
+    }
+
+}