Examples of org.apache.cocoon.components.source.SourceInspector

Package org.apache.cocoon.components.source

Examples of org.apache.cocoon.components.source.SourceInspector

org.apache.cocoon.components.source.SourceInspector
A source inspector helps to get properties from sources @author Stephan Michels @version CVS $Id: SourceInspector.java,v 1.2 2003/03/16 17:49:07 vgritsenko Exp $


        final Configuration[] configurations = configuration.getChildren("sourceinspector");
        for(int i=0; i<configurations.length; i++) {
            String className = configurations[i].getAttribute( "class", "" );


            SourceInspector inspector = null;


            try {
                final Class inspectorClass = classloader.loadClass(className);
                inspector = (SourceInspector)inspectorClass.newInstance();
            } catch (InstantiationException ie) {

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     *
     * @throws Exception if an error occurs
     */
    public void initialize() throws Exception {


        SourceInspector inspector;
        for(int i=0; i<this.inspectors.size(); i++) {
            inspector = (SourceInspector)this.inspectors.get(i);


            if (inspector instanceof LogEnabled)
                ((LogEnabled)inspector).enableLogging(getLogger());

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     * This method will be called after Startable.stop() method (if implemented
     * by component). Components use this method to release and destroy any
     * resources that the Component owns.
     */
    public void dispose() {
        SourceInspector inspector;
        for(int i=0; i<this.inspectors.size(); i++) {
            inspector = (SourceInspector)this.inspectors.get(i);
            
            if (inspector instanceof Disposable)
                ((Disposable)inspector).dispose();

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    }


    public SourceProperty getSourceProperty(Source source, String namespace, String name) 
        throws SourceException {


        SourceInspector inspector;
        SourceProperty property;
        for(int i=0; i<this.inspectors.size(); i++) {
            inspector = (SourceInspector)this.inspectors.get(i);
      
            property = inspector.getSourceProperty(source, namespace, name);
            if (property!=null)
                return property;
        }
        return null;
    }

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    }


    public SourceProperty[] getSourceProperties(Source source) throws SourceException {
        ArrayList list = new ArrayList();


        SourceInspector inspector;
        SourceProperty[] properties;
        SourceProperty property;
        boolean propertyExists;
        for(int i=0; i<this.inspectors.size(); i++) {
            inspector = (SourceInspector)this.inspectors.get(i);


            try {
                properties = inspector.getSourceProperties(source);


                if (properties!=null)
                    for(int j=0; j<properties.length; j++) {
                        propertyExists = false;
                        for(int k=0; k<list.size() && !propertyExists; k++) {

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        attributes.addAttribute("", PROPERTY_TYPE_ATTR_NAME,
                                PROPERTY_TYPE_ATTR_NAME, "CDATA", "computed");
        this.contentHandler.startElement(SOURCE_NS, PROPERTIES_NODE_NAME,
                                         PROPERTIES_NODE_QNAME, attributes);


        SourceInspector inspector = null;


        try {
            inspector = (SourceInspector) this.manager.lookup(SourceInspector.ROLE);


            SourceProperty[] properties = inspector.getSourceProperties(source);
            IncludeXMLConsumer consumer = new IncludeXMLConsumer(this.contentHandler);


            for (int i = 0; i<properties.length; i++) {
                this.contentHandler.startPrefixMapping("", properties[i].getNamespace());
                properties[i].toSAX(consumer);

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        final ClassLoader classloader = Thread.currentThread().getContextClassLoader();
        final Configuration[] children = m_configuration.getChildren();
        
        for (int i = 0; i < children.length; i++) {
            String className = children[i].getAttribute("class","");
            SourceInspector inspector;
            try {
                final Class inspectorClass = classloader.loadClass(className);
                inspector = (SourceInspector) inspectorClass.newInstance();
            } catch (InstantiationException ie) {
                throw new ConfigurationException(

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    public SourceProperty getSourceProperty(Source source, String namespace, String name) 
            throws SourceException {


        final Iterator inspectors = m_inspectors.iterator();
        while (inspectors.hasNext()) {
            SourceInspector inspector = (SourceInspector) inspectors.next();
            SourceProperty property = inspector.getSourceProperty(source,namespace,name);
            if (property != null) {
                return property;
            }
        }
        return null;

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    /**
     * Aggregate all properties of all registered inspectors.
     */
    public SourceProperty[] getSourceProperties(Source source) throws SourceException {
        final Set result = new HashSet();
        SourceInspector inspector;
        SourceProperty[] properties;
        final Iterator inspectors = m_inspectors.iterator();
        while (inspectors.hasNext()) {
            inspector = (SourceInspector) inspectors.next();
            properties = inspector.getSourceProperties(source);
            if (properties != null) {
                result.addAll(Arrays.asList(properties));
            }
        }
        return (SourceProperty[]) result.toArray(new SourceProperty[result.size()]);

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    /**
     * Check if there is an inspector that handles properties of 
     * the given type.
     */
    public boolean handlesProperty(String namespace, String name) {
        SourceInspector inspector;
        final Iterator inspectors = m_inspectors.iterator();
        while(inspectors.hasNext()) {
            inspector = (SourceInspector) inspectors.next();
            if (inspector.handlesProperty(namespace,name)) {
                return true;
            }
        }
        return false;
    }

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