Fixed #SWS-59: CastorMarshaller does not marshal to DOM trees correctly

xml/src/main/java/org/springframework/xml/dom/DomContentHandler.java

@@ -0,0 +1,104 @@
+/*
+ * Copyright 2006 the original author or authors.
+ *
+ * Licensed 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.springframework.xml.dom;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.util.Assert;
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.Node;
+import org.w3c.dom.ProcessingInstruction;
+import org.w3c.dom.Text;
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+import org.xml.sax.helpers.DefaultHandler;
+
+/**
+ * SAX <code>ContentHandler</code> that transforms callback calls to DOM <code>Node</code>s.
+ *
+ * @author Arjen Poutsma
+ * @see org.w3c.dom.Node
+ */
+public class DomContentHandler extends DefaultHandler {
+
+    private Document document;
+
+    private List elements = new ArrayList();
+
+    private Node node;
+
+    /**
+     * Creates a new instance of the <code>DomContentHandler</code> with the given node.
+     *
+     * @param node the node to publish events to
+     */
+    public DomContentHandler(Node node) {
+        Assert.notNull(node, "node must not be null");
+        this.node = node;
+        if (node instanceof Document) {
+            document = (Document) node;
+        }
+    }
+
+    private Node getParent() {
+        if (!elements.isEmpty()) {
+            return (Node) elements.get(elements.size() - 1);
+        }
+        else {
+            return node;
+        }
+    }
+
+    public void characters(char ch[], int start, int length) throws SAXException {
+        String data = new String(ch, start, length);
+        Node parent = getParent();
+        Node lastChild = parent.getLastChild();
+        if (lastChild != null && lastChild.getNodeType() == Node.TEXT_NODE) {
+            ((Text) lastChild).appendData(data);
+        }
+        else {
+            Text text = document.createTextNode(data);
+            parent.appendChild(text);
+        }
+    }
+
+    public void endElement(String uri, String localName, String qName) throws SAXException {
+        elements.remove(elements.size() - 1);
+    }
+
+    public void processingInstruction(String target, String data) throws SAXException {
+        Node parent = getParent();
+        ProcessingInstruction pi = document.createProcessingInstruction(target, data);
+        parent.appendChild(pi);
+    }
+
+    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
+        Node parent = getParent();
+        Element element = document.createElementNS(uri, qName);
+        for (int i = 0; i < attributes.getLength(); i++) {
+            String attrUri = attributes.getURI(i);
+            String attrQname = attributes.getQName(i);
+            String value = attributes.getValue(i);
+            element.setAttributeNS(attrUri, attrQname, value);
+        }
+        parent.appendChild(element);
+        elements.add(element);
+    }
+
+}