Examples of org.apache.commons.configuration2.Configuration

Package org.apache.commons.configuration2

Examples of org.apache.commons.configuration2.Configuration

org.apache.commons.configuration2.Configuration

The main Configuration interface.

This interface allows accessing and manipulating a configuration object. The major part of the methods defined in this interface deals with accessing properties of various data types. There is a generic {@code getProperty()}method, which returns the value of the queried property in its raw data type. Other getter methods try to convert this raw data type into a specific data type. If this fails, a {@code ConversionException} will be thrown.
For most of the property getter methods an overloaded version exists that allows to specify a default value, which will be returned if the queried property cannot be found in the configuration. The behavior of the methods that do not take a default value in case of a missing property is not defined by this interface and depends on a concrete implementation. E.g. the {@link AbstractConfiguration} class, which is the base classof most configuration implementations provided by this package, per default returns null if a property is not found, but provides the {@link AbstractConfiguration#setThrowExceptionOnMissing(boolean) setThrowExceptionOnMissing()}method, with which it can be configured to throw a {@code NoSuchElementException}exception in that case. (Note that getter methods for primitive types in {@code AbstractConfiguration} always throw an exception for missingproperties because there is no way of overloading the return value.)

With the {@code addProperty()} and {@code setProperty()} methodsnew properties can be added to a configuration or the values of properties can be changed. With {@code clearProperty()} a property can be removed.Other methods allow to iterate over the contained properties or to create a subset configuration.
@author Commons Configuration team @version $Id: Configuration.java 1624601 2014-09-12 18:04:36Z oheger $

    }


    @Test
    public void testSubset()
    {
        Configuration subset = config.subset("dictionary");
        Iterator<String> keys = subset.getKeys();


        String key = keys.next();
        assertEquals("1st key", "key1", key);
        assertEquals("1st value", "value1", subset.getString(key));


        key = keys.next();
        assertEquals("2nd key", "key2", key);
        assertEquals("2nd value", "value2", subset.getString(key));


        key = keys.next();
        assertEquals("3rd key", "key3", key);
        assertEquals("3rd value", "value3", subset.getString(key));


        assertFalse("more than 3 properties founds", keys.hasNext());
    }

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        assertFalse("empty array", list.isEmpty());
        assertEquals("size", 2, list.size());


        // 1st dictionary
        ObjectAssert.assertInstanceOf("the dict element is not parsed as a Configuration", Configuration.class, list.get(0));
        Configuration conf1 = (Configuration) list.get(0);
        assertFalse("configuration 1 is empty", conf1.isEmpty());
        assertEquals("configuration element", "bar", conf1.getProperty("foo"));


        // 2nd dictionary
        ObjectAssert.assertInstanceOf("the dict element is not parsed as a Configuration", Configuration.class, list.get(1));
        Configuration conf2 = (Configuration) list.get(1);
        assertFalse("configuration 2 is empty", conf2.isEmpty());
        assertEquals("configuration element", "value", conf2.getProperty("key"));
    }

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        EasyMock.replay(detector);
        ReloadingController controller = new ReloadingController(detector);
        BasicConfigurationBuilder<Configuration> builder =
                new BasicConfigurationBuilder<Configuration>(
                        PropertiesConfiguration.class);
        Configuration configuration = builder.getConfiguration();


        builder.connectToReloadingController(controller);
        controller.checkForReloading(null);
        assertTrue("Not in reloading state", controller.isInReloadingState());
        assertNotSame("No new configuration created", configuration,

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        assertFalse("empty array", list.isEmpty());
        assertEquals("size", 2, list.size());


        // 1st dictionary
        ObjectAssert.assertInstanceOf("the dict element is not parsed as a Configuration", Configuration.class, list.get(0));
        Configuration conf1 = (Configuration) list.get(0);
        assertFalse("configuration 1 is empty", conf1.isEmpty());
        assertEquals("configuration element", "bar", conf1.getProperty("foo"));


        // 2nd dictionary
        ObjectAssert.assertInstanceOf("the dict element is not parsed as a Configuration", Configuration.class, list.get(1));
        Configuration conf2 = (Configuration) list.get(1);
        assertFalse("configuration 2 is empty", conf2.isEmpty());
        assertEquals("configuration element", "value", conf2.getProperty("key"));
    }

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    public ConfigurationBuilder<? extends Configuration> getConfigurationBuilder(
            ConfigurationDeclaration decl) throws ConfigurationException
    {
        ConfigurationBuilder<? extends Configuration> multiBuilder =
                super.getConfigurationBuilder(decl);
        Configuration wrapConfig = createWrapperConfiguration(multiBuilder);
        return createWrapperBuilder(multiBuilder, wrapConfig);
    }

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     * Set up instance variables required by this test case.
     */
    @Before
    public void setUp() throws Exception
    {
        Configuration configuration = createConfiguration();


        for (int i = 0; i < properties.length; i++)
        {
            configuration.setProperty(properties[i], values[i]);
        }


        for (int element : intArray) {
            configuration.addProperty("intIndexed", new Integer(element));
        }


        for (String element : stringArray) {
            configuration.addProperty("stringIndexed", element);
        }


        List<String> list = Arrays.asList(stringArray);
        configuration.addProperty("listIndexed", list);


        bean = new ConfigurationDynaBean(configuration);


        bean.set("listIndexed", list);
        bean.set("intArray", intArray);

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        // get configuration property
        Object result = getConfiguration().getProperty(name);
        if (result == null)
        {
            // otherwise attempt to create bean from configuration subset
            Configuration subset = new SubsetConfiguration(getConfiguration(), name, PROPERTY_DELIMITER);
            if (!subset.isEmpty())
            {
                result = new ConfigurationDynaBean(subset);
            }
        }

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    }


    @Override
    public boolean contains(String name, String key)
    {
        Configuration subset = getConfiguration().subset(name);
        if (subset == null)
        {
            throw new IllegalArgumentException("Mapped property '" + name + "' does not exist.");
        }


        return subset.containsKey(key);
    }

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    }


    @Override
    public Object get(String name, String key)
    {
        Configuration subset = getConfiguration().subset(name);
        if (subset == null)
        {
            throw new IllegalArgumentException("Mapped property '" + name + "' does not exist.");
        }


        return subset.getProperty(key);
    }

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    }


    @Override
    public void remove(String name, String key)
    {
        Configuration subset = new SubsetConfiguration(getConfiguration(), name, PROPERTY_DELIMITER);
        subset.setProperty(key, null);
    }

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