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 $

        List actionParameters = new ArrayList();


        Configuration[] childrenConfig = config.getChildren();
        for (int i = 0; i < childrenConfig.length; i++) {


            Configuration childConfig = childrenConfig[i];
            String name = childConfig.getName();


            if ("act".equals(name)) {


                checkNamespace(childConfig);
                String type = this.treeBuilder.getTypeForStatement(childConfig, Action.ROLE + "Selector");


                actionTypes.add(type);
                actionNames.add(childConfig.getAttribute("action", null));
                actionSources.add(VariableResolverFactory.getResolver(
                    childConfig.getAttribute("src", null), this.manager));
                actionParameters.add(this.getParameters(childConfig));


            } else {
                // Unknown element
                String msg = "Unknown element " + name + " in action-set at " + childConfig.getLocation();
                throw new ConfigurationException(msg);
            }
        }


        String[] types   = (String[])actionTypes.toArray(new String[actionTypes.size()]);

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        if (!this.initialized) {
            this.lazy_initialize();
        }


        Configuration mConf = null;
        String inputName=null;
        String parameter = this.parameter;
        if (modeConf!=null) {
            mConf   = modeConf.getChild("input-module");
            inputName   = mConf.getAttribute("name",null);
            parameter   = modeConf.getChild("from-parameter").getValue(parameter);
        }


        if (getLogger().isDebugEnabled())
            getLogger().debug("modeConf is "+modeConf+" this.inputConf is "+this.inputConf

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     * @param renderer tiff renderer
     * @throws FOPException fop exception
     * @see org.apache.fop.render.PrintRendererConfigurator#configure(Renderer)
     */
    public void configure(Renderer renderer) throws FOPException {        
        Configuration cfg = super.getRendererConfig(renderer);
        if (cfg != null) {
            TIFFRenderer tiffRenderer = (TIFFRenderer)renderer;
            //set compression
            String name = cfg.getChild("compression").getValue(TIFFRenderer.COMPRESSION_PACKBITS);
            //Some compression formats need a special image format:
            if (name.equalsIgnoreCase(TIFFRenderer.COMPRESSION_CCITT_T6)) {
                tiffRenderer.setBufferedImageType(BufferedImage.TYPE_BYTE_BINARY);
            } else if (name.equalsIgnoreCase(TIFFRenderer.COMPRESSION_CCITT_T4)) {
                tiffRenderer.setBufferedImageType(BufferedImage.TYPE_BYTE_BINARY);

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     * @exception ConfigurationException if an error occurs
     * @exception ContextException if an error occurs
     */
    public Configuration configure(ExcaliburComponentManager startupManager) throws ConfigurationException, ContextException {
        SAXParser p = null;
        Configuration roleConfig = null;


        try {
            this.configurationFile.refresh();
            p = (SAXParser)startupManager.lookup(SAXParser.ROLE);
            SAXConfigurationHandler b = new SAXConfigurationHandler();
            InputStream inputStream = ClassUtils.getResource("org/apache/cocoon/cocoon.roles").openStream();
            InputSource is = new InputSource(inputStream);
            is.setSystemId(this.configurationFile.getURI());
            p.parse(is, b);
            roleConfig = b.getConfiguration();
        } catch (Exception e) {
            throw new ConfigurationException("Error trying to load configurations", e);
        } finally {
            if (p != null) startupManager.release((Component)p);
        }


        DefaultRoleManager drm = new DefaultRoleManager();
        drm.enableLogging(getLogger().getChildLogger("roles"));
        drm.configure(roleConfig);
        roleConfig = null;


        try {
            p = (SAXParser)startupManager.lookup(SAXParser.ROLE);
            SAXConfigurationHandler b = new SAXConfigurationHandler();
            InputSource is = SourceUtil.getInputSource(this.configurationFile);
            p.parse(is, b);
            this.configuration = b.getConfiguration();
        } catch (Exception e) {
            throw new ConfigurationException("Error trying to load configurations",e);
        } finally {
            if (p != null) startupManager.release((Component)p);
        }


        Configuration conf = this.configuration;
        if (getLogger().isDebugEnabled()) {
            getLogger().debug("Root configuration: " + conf.getName());
        }
        if (! "cocoon".equals(conf.getName())) {
            throw new ConfigurationException("Invalid configuration file\n" + conf.toString());
        }
        if (getLogger().isDebugEnabled()) {
            getLogger().debug("Configuration version: " + conf.getAttribute("version"));
        }
        if (!Constants.CONF_VERSION.equals(conf.getAttribute("version"))) {
            throw new ConfigurationException("Invalid configuration schema version. Must be '" + Constants.CONF_VERSION + "'.");
        }


        String userRoles = conf.getAttribute("user-roles", "");
        if (!"".equals(userRoles)) {
            try {
                p = (SAXParser)startupManager.lookup(SAXParser.ROLE);
                SAXConfigurationHandler b = new SAXConfigurationHandler();
                org.apache.cocoon.environment.Context context =

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  {
    parameters = new ArrayList();


    Configuration[] params = config.getChildren("parameter");
    for (int i = 0; i < params.length; i++) {
      Configuration param = params[i];
      String name = param.getAttribute("name", null);
      String value = param.getAttribute("value", null);
      parameters.add(new Interpreter.Argument(name, value));
    }


    try {
      // Check to see if we need to resolve the function name or the

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     *
     * @param  configuration               Description of Parameter
     * @exception  ConfigurationException  Description of Exception
     */
    public void configure(Configuration configuration) throws ConfigurationException {
        Configuration child;


        child = configuration.getChild(INCLUDE_NAME);
        this.includeNameConfigure = child.getValue(INCLUDE_NAME_DEFAULT);


        child = configuration.getChild(EXCLUDE_NAME);
        this.excludeNameConfigure = child.getValue(EXCLUDE_NAME_DEFAULT);


        if (this.includeNameConfigure == null) {
            String message = "Configure " + INCLUDE_NAME + "!";
            throw new ConfigurationException(message);
        }

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        this.clazz = new Class[children.length];
        this.name = new String[children.length];
        this.unroll = new boolean[children.length];


        for (int i = 0; i < children.length; i++) {
            Configuration child = children[i];


            String childClassName = child.getAttribute("class");
            Class childClass = null;
            try {
                childClass = ClassUtils.loadClass(childClassName);
            }
            catch (Exception e) {
                throw new ConfigurationException("Cannot load class '" + childClassName + "' at " + child.getLocation());
            }
            
            // Check that this class is not hidden by a more general class already declared
            for (int j = 0; j < i; j++) {
                if (this.clazz[j].isAssignableFrom(childClass)) {
                    throw new ConfigurationException("Class '" + this.clazz[j].getName() + "' hides its subclass '" +
                      childClassName + "' at " + child.getLocation());
                }
            }


      this.clazz[i] = childClass;
            this.name[i] = child.getAttribute("name", null);
            this.unroll[i] = child.getAttributeAsBoolean("unroll", false);


            if (this.name[i] == null && !this.unroll[i]) {
                throw new ConfigurationException("Must specify one of 'name' or 'unroll' at " + child.getLocation());
            }
        }
    }

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    public void configure(Configuration config)
    throws ConfigurationException {
        this.fileName = config.getAttribute("file", null);
        this.checkReload = config.getAttributeAsBoolean("check-reload", true);


        Configuration rootLangConfig = config.getChild("root-language", false);
        if (rootLangConfig != null) {
            this.language = rootLangConfig.getAttribute("name");
        }


        // Obtain the configuration file, or use the XCONF_URL if none
        // is defined
        String xconfURL = config.getAttribute("config", XCONF_URL);


        // Reload check delay. Default is 1 second.
        this.lastModifiedDelay = config.getChild("reload").getAttributeAsLong("delay", 1000L);


        // Read the builtin languages definition file
        Configuration builtin;
        org.apache.excalibur.source.SourceResolver resolver = null;
        try {
            resolver = (org.apache.excalibur.source.SourceResolver)this.manager.lookup(org.apache.excalibur.source.SourceResolver.ROLE);
            org.apache.excalibur.source.Source source = resolver.resolveURI( xconfURL );
            try {

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        for (int i = 0; i < children.length; i++) {
            // Check if there are XPath-Expressions configured
            xPathChildren = children[i].getChildren("xpath");
            Map xPathMap = new HashMap();
            for (int j = 0; j < xPathChildren.length; j++) {
                Configuration xPathChild = xPathChildren[j];


                String xPathName = xPathChild.getAttribute("name");
                String xPath = xPathChild.getAttribute("test");


                xPathMap.put(xPath, xPathName);
            }
            if (xPathMap.size() > 0)
                // store xpath - config if there is some

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            appContext.put(Constants.CONTEXT_ENVIRONMENT_CONTEXT, cliContext);
            DefaultLogKitManager logKitManager = null;
            if (logKit != null) {
                final FileInputStream fis = new FileInputStream(logKit);
                final DefaultConfigurationBuilder builder = new DefaultConfigurationBuilder();
                final Configuration logKitConf = builder.build(fis);
                logKitManager = new DefaultLogKitManager(Hierarchy.getDefaultHierarchy());
                logKitManager.setLogger(log);
                final DefaultContext subcontext = new DefaultContext(appContext);
                subcontext.put("context-root", contextDir);
                logKitManager.contextualize(subcontext);

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