Commons Digester example source code file (NamespaceSnapshotTestCase.java)

This example Commons Digester source code file (NamespaceSnapshotTestCase.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Commons Digester tags/keywords

digester, digester, io, ioexception, map, namespacedbox, namespacedbox, namespacesnapshotrule, namespacesnapshotrule, namespacesnapshottestcase, object, override, rule, sax, string, string, util

The Commons Digester NamespaceSnapshotTestCase.java source code

/* $Id: NamespaceSnapshotTestCase.java 991633 2010-09-01 18:15:22Z simonetripodi $
 *
 * 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.digester;


import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Map;

import org.junit.Test;
import org.xml.sax.Attributes;


/**
 * Tests namespace snapshotting.
 */

public class NamespaceSnapshotTestCase {

    /**
     * A test case specific helper rule.
     */
    static class NamespaceSnapshotRule extends Rule {
        /**
         * @see Rule#begin(String, String, Attributes)
         */
        @Override
        public final void begin(final String namespace, final String name,
                final Attributes attributes) {
            Digester d = getDigester();
            Map<String, String> namespaces = d.getCurrentNamespaces();
            ((NamespacedBox) d.peek()).setNamespaces(namespaces);
        }
    }

    /**
     * Namespace snapshot test case.
     */
    @Test
    public void testNamespaceSnapshots() throws Exception {

        Digester digester = new Digester();
        digester.setNamespaceAware(true);
        digester.addObjectCreate("box", NamespacedBox.class);
        digester.addSetProperties("box");
        digester.addRule("box", new NamespaceSnapshotRule());
        digester.addObjectCreate("box/subBox", NamespacedBox.class);
        digester.addSetProperties("box/subBox");
        digester.addRule("box/subBox", new NamespaceSnapshotRule());
        digester.addSetNext("box/subBox", "addChild");

        Object result = digester.parse(getInputStream("Test11.xml"));
        assertNotNull(result);

        NamespacedBox root = (NamespacedBox) result;
        Map<String, String> nsmap = root.getNamespaces();
        assertEquals(3, nsmap.size());
        assertEquals("", nsmap.get(""));
        assertEquals("http://commons.apache.org/digester/Foo", nsmap.get("foo"));
        assertEquals("http://commons.apache.org/digester/Bar", nsmap.get("bar"));

        List<Box> children = root.getChildren();
        assertEquals(3, children.size());

        NamespacedBox child1 = (NamespacedBox) children.get(0);
        nsmap = child1.getNamespaces();
        assertEquals(3, nsmap.size());
        assertEquals("", nsmap.get(""));
        assertEquals("http://commons.apache.org/digester/Foo1", nsmap.get("foo"));
        assertEquals("http://commons.apache.org/digester/Bar1", nsmap.get("bar"));

        NamespacedBox child2 = (NamespacedBox) children.get(1);
        nsmap = child2.getNamespaces();
        assertEquals(5, nsmap.size());
        assertEquals("", nsmap.get(""));
        assertEquals("http://commons.apache.org/digester/Foo", nsmap.get("foo"));
        assertEquals("http://commons.apache.org/digester/Bar", nsmap.get("bar"));
        assertEquals("http://commons.apache.org/digester/Alpha", nsmap.get("alpha"));
        assertEquals("http://commons.apache.org/digester/Beta", nsmap.get("beta"));

        NamespacedBox child3 = (NamespacedBox) children.get(2);
        nsmap = child3.getNamespaces();
        assertEquals(4, nsmap.size());
        assertEquals("", nsmap.get(""));
        assertEquals("http://commons.apache.org/digester/Foo3", nsmap.get("foo"));
        assertEquals("http://commons.apache.org/digester/Alpha", nsmap.get("alpha"));
        assertEquals("http://commons.apache.org/digester/Bar", nsmap.get("bar"));

    }

    // ------------------------------------------------ Utility Support Methods


    /**
     * Return an appropriate InputStream for the specified test file (which
     * must be inside our current package.
     *
     * @param name Name of the test file we want
     *
     * @exception IOException if an input/output error occurs
     */
    protected InputStream getInputStream(String name) throws IOException {

        return (this.getClass().getResourceAsStream
                ("/org/apache/commons/digester/" + name));

    }

}