Examples of org.apache.avalon.framework.configuration.Configuration

Package org.apache.avalon.framework.configuration

Examples of org.apache.avalon.framework.configuration.Configuration

org.apache.avalon.framework.configuration.Configuration

com/documentation"> <doc:desc>This is a highly fictitious config file</doc:desc> <widget name="fooWidget" initOrder="1" threadsafe="true"/> </my-system>

If namespace support is enabled (eg through {@link DefaultConfigurationBuilder#DefaultConfigurationBuilder(boolean) newDefaultConfigurationBuilder(true)}), then the xmlns:doc element will not translate into a Configuration attribute, and the doc:desc element will become a Configuration node with name "desc" and namespace "http://myco.com/documentation". The widget element will have namespace "".

If namespace support is disabled (the default for {@link DefaultConfigurationBuilder}), the above XML will translate directly to Configuration nodes. The my-system node will have an attribute named "xmlns:doc", and a child called "doc:desc".

Assuming the Configuration object is named conf, here is how the data could be retrieved:

Code	No namespaces	With namespaces
`conf. {@link #getName getName}()`	my-system
`conf. {@link #getAttributeNames getAttributeNames}().length`	2	1
`conf. {@link #getChildren getChildren}().length`	2
`conf. {@link #getAttributeAsFloat getAttributeAsFloat}("version")`	1.3
`conf. {@link #getChild getChild}("widget"). {@link #getAttribute getAttribute}("name")`	fooWidget
`conf. {@link #getChild getChild}("widget") . {@link #getAttributeAsBoolean getAttributeAsBoolean}("threadsafe")`	`true`
`conf. {@link #getChild getChild}("widget"). {@link #getLocation getLocation}()`	file:///home/jeff/tmp/java/avalon/src/java/new.xconf:4:60
`conf. {@link #getChild getChild}("desc"). {@link #getName getName}()`	desc (see {@link #getChild(String)})	desc
`conf. {@link #getChild getChild}("doc:desc"). {@link #getName getName}()`	doc:desc	doc:desc (see {@link #getChild(String)})
`conf. {@link #getChild getChild}("desc"). {@link #getValue getValue}()`	{@link ConfigurationException}	This is a highly fictitious config file
`conf. {@link #getChild getChild}("doc:desc"). {@link #getValue getValue}()`	This is a highly fictitious config file	{@link ConfigurationException}
`conf. {@link #getChild getChild}("desc"). {@link #getNamespace getNamespace}()`		http://myco.com/documentation"

Type-safe utility methods are provided for retrieving attribute and element values as String, int, long, float and boolean.

Miscellanea

Currently, the configuration tree can only be traversed one node at a time, eg., through {@link #getChild getChild("foo")} or {@link #getChildren}. In a future release, it may be possible to access child nodes with an XPath-like syntax.

Checking for the existence of an attribute can be done as follows:

 String value = conf.getAttribute( "myAttribute", null ); if ( null == value ) { // Do the processing applicable if the attribute isn't present. }

@author Avalon Development Team @version CVS $Revision: 1.29 $ $Date: 2004/02/11 14:34:24 $

        } catch  (UnknownHostException ue) {
            // Default to localhost if we can't get the local host name.
            hostName = "localhost";
        }


        Configuration helloConf = configuration.getChild("helloName");
        boolean autodetect = helloConf.getAttributeAsBoolean("autodetect", true);


        return autodetect ? hostName : helloConf.getValue("localhost");
    }

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    catch ( Exception e ) { 
        System.out.println("Got an Exception: " + e.getMessage());          
    }


    // FOUserAgent can be used to set PDF metadata
    Configuration configuration = loadFOPConfig();
    InputStream in = null;
    OutputStream out = null;
    File targetPdfFile = null;
    try
    {

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        // First transform the cover page
        transformCover();


        // FOUserAgent can be used to set PDF metadata
        Configuration configuration = loadFOPConfig();
        InputStream in = null;
        OutputStream out = null;


        try
            {

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    {
        final HashMap targetSet = new HashMap();


        for( int i = 0; i < targets.length; i++ )
        {
            final Configuration target = targets[ i ];
            final String name = target.getAttribute( "name" );
            String location = target.getAttribute( "location" ).trim();
            final String format = target.getAttribute( "format", DEFAULT_FORMAT );
            final boolean append = target.getAttributeAsBoolean( "append", true );


            if( '/' == location.charAt( 0 ) )
            {
                location = location.substring( 1 );
            }

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    private void configureCategories( final Configuration[] categories, final HashMap targets )
        throws ConfigurationException
    {
        for( int i = 0; i < categories.length; i++ )
        {
            final Configuration category = categories[ i ];
            final String name = category.getAttribute( "name", "" );
            final String target = category.getAttribute( "target" );
            final String priorityName = category.getAttribute( "priority" );


            final Logger logger =
                m_logkitLogger.getChildLogger( name );


            final LogTarget logTarget = (LogTarget)targets.get( target );

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     * @throws ConfigurationException if the configuration is malformed
     */
    public final void configure( final Configuration configuration )
        throws ConfigurationException
    {
        final Configuration factories = configuration.getChild( "factories" );
        final LogTargetFactoryManager targetFactoryManager = setupTargetFactoryManager( factories );


        final Configuration targets = configuration.getChild( "targets" );
        final LogTargetManager targetManager = setupTargetManager( targets, targetFactoryManager );


        final Configuration categories = configuration.getChild( "categories" );
        final String debugURL = configuration.getAttribute( "debug", null );
        final Configuration[] category = categories.getChildren( "category" );
        setupLoggers( targetManager, m_prefix, category );


        if( null != debugURL )
        {
            try
            {
                final File rootContext = (File)m_context.get( "context-root" );
                DefaultConfigurationBuilder builder = new DefaultConfigurationBuilder();
                Configuration debugCategories = builder.buildFromFile( new File( rootContext, debugURL ) );
                final Configuration[] debugCat = debugCategories.getChildren( "category" );
                setupLoggers( targetManager, m_prefix, debugCat );
            }
            catch( ConfigurationException ce )
            {
                throw ce;

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    {
        m_logger = setupLogger();
        m_logger.debug( "LogKitManagementTest.initialize" );


        final DefaultConfigurationBuilder builder = new DefaultConfigurationBuilder();
        final Configuration conf = builder.build( testconf );
        final Context context = setupContext( conf.getChild( "context" ) );


        final DefaultLogKitManager lkm = new DefaultLogKitManager();
        lkm.enableLogging( new LogKitLogger( m_logger ) );
        lkm.contextualize( context );
        lkm.configure( conf );

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    public void testBuildFromFileName()
        throws Exception
    {
         m_builder = new DefaultConfigurationBuilder();
         m_nsBuilder = new DefaultConfigurationBuilder(true); // switch on namespace support
         Configuration conf = m_builder.buildFromFile( TEST_PATH + SIMPLE_FILE_NAME );
         simpleAssertions( conf );
         conf = m_builder.buildFromFile( TEST_PATH + NS_FILE_NAME );
         simpleAssertionsNS( conf );
         conf = m_nsBuilder.buildFromFile( TEST_PATH + NS_FILE_NAME );
         nsAssertions( conf );

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    public void testBuildFromFile()
        throws Exception
    {
        m_builder = new DefaultConfigurationBuilder();
        m_nsBuilder = new DefaultConfigurationBuilder(true); // switch on namespace support
        Configuration conf =  m_builder.buildFromFile( m_file );
        simpleAssertions( conf );
        conf = m_builder.buildFromFile( m_nsFile );
        simpleAssertionsNS( conf );
        conf = m_nsBuilder.buildFromFile( m_nsFile );
        nsAssertions( conf );

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    public void testBuild()
        throws Exception
    {
        m_builder = new DefaultConfigurationBuilder();
        m_nsBuilder = new DefaultConfigurationBuilder(true); // switch on namespace support
        Configuration conf =  m_builder.build( m_file.toURL().toString() );
        simpleAssertions( conf );
        conf = m_builder.buildFromFile( m_nsFile );
        simpleAssertionsNS( conf );
        conf = m_nsBuilder.buildFromFile( m_nsFile );
        nsAssertions( conf );

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