Examples of org.apache.commons.chain.Catalog

org.apache.commons.chain.Catalog

A {@link Catalog} is a collection of named {@link Command}s (or {@link Chain}s) that can be used retrieve the set of commands that should be performed based on a symbolic identifier. Use of catalogs is optional, but convenient when there are multiple possible chains that can be selected and executed based on environmental conditions.
@author Craig R. McClanahan @version $Revision: 1.7 $ $Date: 2004/11/30 05:52:22 $

    public void service(HttpServletRequest request,
                        HttpServletResponse response)
        throws IOException, ServletException {
        
        CatalogFactory factory = CatalogFactory.getInstance();
        Catalog catalog = factory.getCatalog(servletName);
        if (catalog == null) {
            catalog = factory.getCatalog();
        }


        ServletWebContext context =
            new ServletWebContext(getServletContext(), request, response);
        Command command = catalog.getCommand("COMMAND_MAPPER");
        try {
            command.execute(context);
        } catch (Exception e) {
            throw new ServletException(e);
        }

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            context.getInitParameter(CONFIG_CLASS_RESOURCE);
        String ruleSet = context.getInitParameter(RULE_SET);
        String webResources = context.getInitParameter(CONFIG_WEB_RESOURCE);


        // Retrieve or create the Catalog instance we may be updating
        Catalog catalog = null;
        if (attr != null) {
            catalog = (Catalog) context.getAttribute(attr);
            if (catalog == null) {
                catalog = new CatalogBase();
            }

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        if (lookupFactory == null) {
            lookupFactory = CatalogFactory.getInstance();
        }


        String catalogName = getCatalogName();
        Catalog catalog = null;
        if (catalogName == null) {
            // use default catalog
            catalog = lookupFactory.getCatalog();
        } else {
            catalog = lookupFactory.getCatalog(catalogName);

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     *  can be found and the <code>optional</code> property is set
     *  to <code>false</code>
     */
    protected Command getCommand(Context context) {


        Catalog catalog = getCatalog(context);


        Command command = null;
        String name = getCommandName(context);
        if (name != null) {
            command = catalog.getCommand(name);
            if ((command == null) && !isOptional()) {
                if (catalogName == null) {
                    throw new IllegalArgumentException
                        ("Cannot find command '" + name
                         + "' in default catalog");

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            context.getInitParameter(CONFIG_CLASS_RESOURCE);
        String ruleSet = context.getInitParameter(RULE_SET);
        String webResources = context.getInitParameter(CONFIG_WEB_RESOURCE);


        // Retrieve or create the Catalog instance we may be updating
        Catalog catalog = null;
        if (attr != null) {
            catalog = (Catalog) context.getAttribute(attr);
            if (catalog == null) {
                catalog = new CatalogBase();
            }

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     *  can be found
     *
     * @since Chain 1.2
     */
    protected Catalog getCatalog(Context context) {
        Catalog catalog = (Catalog) context.get(getCatalogKey());
        if (catalog == null) {
            catalog = super.getCatalog(context);
        }
        return catalog;
    }

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     */
    public void begin(String namespace, String name, Attributes attributes)
        throws Exception {


        // Retrieve any current Catalog with the specified name
        Catalog catalog = null;
        CatalogFactory factory = CatalogFactory.getInstance();
        String nameValue = attributes.getValue(nameAttribute);
        if (nameValue == null) {
            catalog = factory.getCatalog();
        } else {

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     *  can be found
     *
     * @since Chain 1.2
     */
    protected Catalog getCatalog(Context context) {
        Catalog catalog = (Catalog) context.get(getCatalogKey());
        if (catalog == null) {
            catalog = super.getCatalog(context);
        }
        return catalog;
    }

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    /**
     * <p>Test the default {@link Catalog} instance.</p>
     */
    public void testDefaultCatalog() {


        Catalog catalog = new CatalogBase();
        factory.setCatalog(catalog);
        assertTrue(catalog == factory.getCatalog());
        assertEquals(0, getCatalogCount());


    }

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    /**
     * <p>Test adding a specifically named {@link Catalog} instance.</p>
     */
    public void testSpecificCatalog() {


        Catalog catalog = new CatalogBase();
        factory.setCatalog(catalog);
        catalog = new CatalogBase();
        factory.addCatalog("foo", catalog);
        assertTrue(catalog == factory.getCatalog("foo"));
        assertEquals(1, getCatalogCount());

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ch.nerdin.generators.testdata.BeanFactory

org.apache.commons.chain.apps.example.ExampleServlet

org.apache.commons.chain.config.ConfigCatalogRule

org.apache.commons.chain.config.ConfigRegisterRule

org.apache.commons.chain.generic.LookupCommand

org.apache.commons.chain.impl.CatalogFactoryBaseTestCase

org.apache.commons.chain.web.ChainListener

org.apache.commons.chain.web.ChainServlet

org.apache.commons.chain.web.servlet.ChainProcessor

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