/*
 * 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.commons.jxpath.ri.model.dom;

import org.apache.commons.jxpath.AbstractFactory;
import org.apache.commons.jxpath.JXPathContext;
import org.apache.commons.jxpath.Pointer;
import org.w3c.dom.Document;
import org.w3c.dom.Node;

/**
 * Test AbstractFactory.
 *
 * @author Dmitri Plotnikov
 * @version $Revision: 480417 $ $Date: 2006-11-28 23:37:40 -0600 (Tue, 28 Nov 2006) $
 */
public class TestDOMFactory extends AbstractFactory {

    /**
     * Return <b>false</b> if this factory cannot create the requested object.
     */
    public boolean createObject(
        JXPathContext context,
        Pointer pointer,
        Object parent,
        String name,
        int index) 
    {
        if (name.equals("location")
            || name.equals("address")
            || name.equals("street")) {
            addDOMElement((Node) parent, index, name, null);
            return true;
        }
        if (name.startsWith("price:")) {
            String namespaceURI = context.getNamespaceURI("price");
            addDOMElement((Node) parent, index, name, namespaceURI);
            return true;
        }
        return false;
    }

    private void addDOMElement(Node parent, int index, String tag, String namespaceURI) {
        Node child = parent.getFirstChild();
        int count = 0;
        while (child != null) {
            if (child.getNodeName().equals(tag)) {
                count++;
            }
            child = child.getNextSibling();
        }

        // Keep inserting new elements until we have index + 1 of them
        while (count <= index) {
            Document doc = parent.getOwnerDocument();
            Node newElement;
            if (namespaceURI == null) {
                newElement = doc.createElement(tag);
            } 
            else {
                newElement = doc.createElementNS(namespaceURI, tag);
            }
       
            parent.appendChild(newElement);
            count++;
        }
    }

    public boolean declareVariable(JXPathContext context, String name) {
        return false;
    }
}