DOMModelTest.java

/*
 * 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.ri.model.AbstractXMLModelTest;
import org.apache.commons.jxpath.xml.DocumentContainer;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

/**
 * Tests JXPath with DOM
 */

public class DOMModelTest extends AbstractXMLModelTest {

    @Override
    protected String getModel() {
        return DocumentContainer.MODEL_DOM;
    }

    @Override
    protected AbstractFactory getAbstractFactory() {
        return new TestDOMFactory();
    }

    public void testGetNode() {
        assertXPathNodeType(context, "/", Document.class);
        assertXPathNodeType(context, "/vendor/location", Element.class);
        assertXPathNodeType(context, "//location/@name", Attr.class);
        assertXPathNodeType(context, "//vendor", Element.class);
    }

    public void testGetElementDescendantOrSelf() {
        final JXPathContext childContext = context.getRelativeContext(context.getPointer("/vendor"));
        assertTrue(childContext.getContextBean() instanceof Element);
        assertXPathNodeType(childContext, "//vendor", Element.class);
    }

    @Override
    protected String getXMLSignature(
        final Object node,
        final boolean elements,
        final boolean attributes,
        final boolean text,
        final boolean pi)
    {
        final StringBuilder buffer = new StringBuilder();
        appendXMLSignature(buffer, node, elements, attributes, text, pi);
        return buffer.toString();
    }

    private void appendXMLSignature(
        final StringBuilder buffer,
        final Object object,
        final boolean elements,
        final boolean attributes,
        final boolean text,
        final boolean pi)
    {
        final Node node = (Node) object;
        final int type = node.getNodeType();
        switch (type) {
            case Node.DOCUMENT_NODE :
                buffer.append("<D>");
                appendXMLSignature(
                    buffer,
                    node.getChildNodes(),
                    elements,
                    attributes,
                    text,
                    pi);
                buffer.append("</D");
                break;

            case Node.ELEMENT_NODE :
                final String tag = elements ? ((Element) node).getTagName() : "E";
                buffer.append("<");
                buffer.append(tag);
                buffer.append(">");
                appendXMLSignature(
                    buffer,
                    node.getChildNodes(),
                    elements,
                    attributes,
                    text,
                    pi);
                buffer.append("</");
                buffer.append(tag);
                buffer.append(">");
                break;

            case Node.TEXT_NODE :
            case Node.CDATA_SECTION_NODE :
                if (text) {
                    String string = node.getNodeValue();
                    string = string.replace('\n', '=');
                    buffer.append(string);
                }
                break;
        }
    }

    private void appendXMLSignature(
        final StringBuilder buffer,
        final NodeList children,
        final boolean elements,
        final boolean attributes,
        final boolean text,
        final boolean pi)
    {
        for (int i = 0; i < children.getLength(); i++) {
            appendXMLSignature(
                buffer,
                children.item(i),
                elements,
                attributes,
                text,
                pi);
        }
    }
}