Examples of org.apache.commons.configuration2.reloading.ReloadingController

Package org.apache.commons.configuration2.reloading

Examples of org.apache.commons.configuration2.reloading.ReloadingController

org.apache.commons.configuration2.convert.DefaultListDelimiterHandler
A class for adding support for reload operations in a generic way.

A {@code ReloadingController} monitors a specific source and triggersreloading events if necessary. So it does not perform reloading itself, but only sends out notifications when it thinks that this should be done. This allows for a very generic setup in which different components involved in reloading are loosely coupled via events.

A typical usage scenario is as follows:
- A {@code ReloadingController} instance is created and initialized with a{@link ReloadingDetector} object.
- A number of {@link EventListener} objects for reloading events can beregistered at the controller.
- Now the controller's {@code checkForReloading()} method is calledwhenever a check is to be performed. This could be done for instance by a timer in regular intervals or by any other means appropriate for a specific application.
- When a check reveals that a reload operation is necessary all registered event listeners are notified.
- Typically one of the listeners is responsible to perform the actual reload operation. (How this is done is not in the scope of the controller object.) After this has been done, the controller's {@code resetReloadingState()} method must be called. It tells the controllerthat the last notification has been processed and that new checks are possible again. It is important that this method is called. Otherwise, {@code checkForReloading()} will not do any new checks or send out eventnotifications any more.
This class can be accessed from multiple threads concurrently. It shields the associated {@link ReloadingDetector} object for concurrent access, so that aconcrete detector implementation does not have to be thread-safe.
@version $Id: ReloadingController.java 1624601 2014-09-12 18:04:36Z oheger $ @since 2.0

     * @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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