Examples of org.apache.commons.configuration2.tree.ReferenceTracker

Package org.apache.commons.configuration2.tree

Examples of org.apache.commons.configuration2.tree.ReferenceTracker

org.apache.commons.configuration2.convert.DefaultListDelimiterHandler

A class which allows an {@link InMemoryNodeModel} to associate arbitraryobjects with nodes.

Some special configuration implementations need additional data to be stored with their nodes structure. We call such data "references" because objects required by a configuration are referenced. In such constellations, it is necessary to keep track about the nodes associated with references even if they are replaced by others during an update operation of the model. This is the task of this class.

Basically, an instance manages a map associating nodes with reference objects. When a node is replaced the map gets updated. References becoming orphans because the nodes pointing to them were removed are tracked, too. They may be of importance for special configuration implementations as they might require additional updates. A concrete use case for this class is {@code XMLConfiguration} which stores the DOM nodes represented byconfiguration nodes as references.

Implementation note: This class is intended to work in a concurrent environment. Instances are immutable. The represented state can be updated by creating new instances which are then stored by the owning node model.
@version $Id: ReferenceTracker.java 1624601 2014-09-12 18:04:36Z oheger $

     * @throws ConfigurationException if an error occurs
     */
    private static void checkTestConfiguration(FileHandler handler)
            throws ConfigurationException
    {
        XMLConfiguration config = new XMLConfiguration();
        FileHandler h2 = new FileHandler(config, handler);
        h2.load();
        assertEquals("Wrong content", "value", config.getString("element"));
    }

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            throws ConfigurationException
    {
        FileBasedConfigurationBuilder<XMLConfiguration> builder =
                new FileBasedConfigurationBuilder<XMLConfiguration>(
                        XMLConfiguration.class);
        builder.configure(new Parameters().fileBased().setFile(testFile));
        config = builder.getConfiguration();


        CountDownLatch startLatch = new CountDownLatch(1);
        Collection<SubNodeAccessThread> threads =
                new ArrayList<SubNodeAccessThread>();

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     */
    @Test
    public void testGetDateNoFormatPropertyConversionHandler() throws Exception
    {
        conf.clearProperty(DataConfiguration.DATE_FORMAT_KEY);
        DefaultConversionHandler handler = new DefaultConversionHandler();
        handler.setDateFormat(DATE_PATTERN);
        conf.setConversionHandler(handler);
        assertEquals("Wrong result", expectedDate(), conf.getDate("date.string"));
    }

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        map.put("key2", "value2");
        map.put("list", "value1, value2");
        map.put("listesc", "value1\\,value2");


        MapConfiguration config = new MapConfiguration(map);
        config.setListDelimiterHandler(new DefaultListDelimiterHandler(','));
        return config;
    }

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     * from the parent.
     */
    @Test
    public void testSetListDelimiterHandler()
    {
        ListDelimiterHandler handler1 = new DefaultListDelimiterHandler('/');
        ListDelimiterHandler handler2 = new DefaultListDelimiterHandler(';');
        parent.setListDelimiterHandler(handler1);
        setUpSubnodeConfig();
        parent.setListDelimiterHandler(handler2);
        assertEquals("List delimiter handler not obtained from parent",
                handler1, config.getListDelimiterHandler());

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     */
    @Test
    public void testConfigurationAtWithUpdateInitialized()
    {
        String key = "tables.table";
        config.setListDelimiterHandler(new DefaultListDelimiterHandler(';'));
        config.setThrowExceptionOnMissing(true);
        List<HierarchicalConfiguration<ImmutableNode>> subs =
                config.configurationsAt(key, true);
        BaseHierarchicalConfiguration sub =
                (BaseHierarchicalConfiguration) subs.get(0);

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     * Tests obtaining a configuration with all variables substituted.
     */
    @Test
    public void testInterpolatedConfiguration()
    {
        config.setListDelimiterHandler(new DefaultListDelimiterHandler(','));
        BaseHierarchicalConfiguration c = (BaseHierarchicalConfiguration) InterpolationTestHelper
                .testInterpolatedConfiguration(config);


        // tests whether the hierarchical structure has been maintained
        checkContent(c);

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    @Before
    public void setUp() throws Exception
    {
        BaseConfiguration baseConfig = new BaseConfiguration();
        baseConfig.setListDelimiterHandler(new DefaultListDelimiterHandler(','));
        conf = new DataConfiguration(baseConfig);


        // empty value
        conf.addProperty("empty", "");

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     */
    @Test
    public void testEscapeListDelimiters()
    {
        PropertiesConfiguration sub = new PropertiesConfiguration();
        sub.setListDelimiterHandler(new DefaultListDelimiterHandler(','));
        sub.addProperty("test.pi", "3\\,1415");
        config.addConfiguration(sub);
        assertEquals("Wrong value", "3,1415", config.getString("test.pi"));
    }

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     */
    @Test
    public void testConversionExpressionEngine()
    {
        PropertiesConfiguration child = new PropertiesConfiguration();
        child.setListDelimiterHandler(new DefaultListDelimiterHandler(','));
        child.addProperty("test(a)", "1,2,3");
        config.addConfiguration(child);
        DefaultExpressionEngine engineQuery =
                new DefaultExpressionEngine(
                        new DefaultExpressionEngineSymbols.Builder(

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