Examples of org.apache.struts.config.ExceptionConfig

org.apache.struts.config.ExceptionConfig

A JavaBean representing the configuration information of an <exception> element from a Struts configuration file.
@version $Rev: 421119 $ $Date: 2005-08-06 18:03:30 -0400 (Sat, 06 Aug 2005)$ @since Struts 1.1

     * Return the exception configurations for this module.  If there
     * are none, a zero-length array is returned.
     */
    public ExceptionConfig[] findExceptionConfigs() {


        ExceptionConfig results[] = new ExceptionConfig[exceptions.size()];
        return ((ExceptionConfig[]) exceptions.values().toArray(results));


    }

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        ActionConfig[] actionConfigs = moduleConfig.findActionConfigs();
        assertNotNull(actionConfigs);
        assertEquals(2, actionConfigs.length);
        
        ExceptionConfig exceptionConfig = moduleConfig.findExceptionConfig(Exception.class.getName());
        assertNotNull(exceptionConfig);
        assertEquals(Exception.class.getName(), exceptionConfig.getType());
        
        ExceptionConfig[] exceptionConfigs = moduleConfig.findExceptionConfigs();
        assertNotNull(exceptionConfigs);
        assertEquals(1, exceptionConfigs.length);

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     * The ExceptionConfig is loaded from test-struts-factory.xml.
     */
    public void testCreateExceptionConfig() {
        PackageConfig packageConfig = configuration.getPackageConfig(PACKAGE_NAME);
        ExceptionMappingConfig cfg = (ExceptionMappingConfig) packageConfig.getGlobalExceptionMappingConfigs().get(0);
        ExceptionConfig exceptionConfig = factory.createExceptionConfig(cfg);
        assertNotNull(exceptionConfig);
        assertEquals(Exception.class.getName(), exceptionConfig.getType());


        assertNYI(exceptionConfig, "getBundle", null);
        assertNYI(exceptionConfig, "getHandler", null);
        assertNYI(exceptionConfig, "getKey", null);
        assertNYI(exceptionConfig, "getPath", null);

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    private void initExceptionConfigs() {
        if (exceptions == null) {
            exceptions = new HashMap();
            List exceptionMappings = delegate.getExceptionMappings();
            for (Iterator i = exceptionMappings.iterator(); i.hasNext();) {
                ExceptionConfig wrapper = strutsFactory.createExceptionConfig((ExceptionMappingConfig) i.next());
                exceptions.put(wrapper.getType(), wrapper);
            }
        }
    }

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                                             ActionForm form,
                                             ActionMapping mapping)
        throws IOException, ServletException {


        // Is there a defined handler for this exception?
        ExceptionConfig config = mapping.findException(exception.getClass());
        if (config == null) {
            log.warn(getInternal().getMessage("unhandledException",
                                              exception.getClass()));
            if (exception instanceof IOException) {
                throw (IOException) exception;
            } else if (exception instanceof ServletException) {
                throw (ServletException) exception;
            } else {
                throw new ServletException(exception);
            }
        }


        // Use the configured exception handling
        try {
            ExceptionHandler handler = (ExceptionHandler)
            RequestUtils.applicationInstance(config.getHandler());
            return (handler.execute(exception, config, mapping, form,
                                    request, response));
        } catch (Exception e) {
            throw new ServletException(e);
        }

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     * Return the exception configurations for this module.  If there
     * are none, a zero-length array is returned.
     */
    public ExceptionConfig[] findExceptionConfigs() {


        ExceptionConfig results[] = new ExceptionConfig[exceptions.size()];
        return ((ExceptionConfig[]) exceptions.values().toArray(results));


    }

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     * @param type Exception class for which to find a handler
     * @since Struts 1.3.0
     */
    public ExceptionConfig findException(Class type) {
        // Check through the entire superclass hierarchy as needed
        ExceptionConfig config = null;


        while (true) {
            // Check for a locally defined handler
            String name = type.getName();

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        property.setName("score");
        property.setType("java.lang.String");
        baseFormBean.addFormPropertyConfig(property);


        // Setup the exception handler
        baseException = new ExceptionConfig();
        baseException.setType("java.lang.NullPointerException");
        baseException.setKey("msg.exception.npe");


        // Setup the forward config
        baseForward = new ActionForward("success", "/succes.jsp", false);


        // Setup the action config
        baseAction = new ActionMapping();
        baseAction.setPath("/index");
        baseAction.setType("org.apache.struts.actions.DummyAction");
        baseAction.setName("someForm");
        baseAction.setInput("/input.jsp");
        baseAction.addForwardConfig(new ActionForward("next", "/next.jsp", false));
        baseAction.addForwardConfig(new ActionForward("prev", "/prev.jsp", false));


        ExceptionConfig exceptionConfig = new ExceptionConfig();


        exceptionConfig.setType("java.sql.SQLException");
        exceptionConfig.setKey("msg.exception.sql");
        baseAction.addExceptionConfig(exceptionConfig);


        // Nothing is registered to our module config until they are needed
    }

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     * Test that initModuleExceptionConfigs throws an exception when a handler
     * with a null key is present.
     */
    public void testInitModuleExceptionConfigsNullFormType()
        throws ServletException {
        ExceptionConfig handler = new ExceptionConfig();


        handler.setType("java.lang.NullPointerException");
        moduleConfig.addExceptionConfig(handler);


        try {
            actionServlet.initModuleExceptionConfigs(moduleConfig);
            fail("An exception should've been thrown here.");

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        customBase.setType("java.lang.NullPointerException");
        customBase.setKey("msg.exception.npe");
        moduleConfig.addExceptionConfig(customBase);


        ExceptionConfig customSub = new ExceptionConfig();


        customSub.setType("java.lang.IllegalStateException");
        customSub.setExtends("java.lang.NullPointerException");
        moduleConfig.addExceptionConfig(customSub);


        ExceptionConfig result =
            actionServlet.processExceptionConfigClass(customSub, moduleConfig,
                null);


        assertTrue("Incorrect class of exception config",
            result instanceof CustomExceptionConfig);
        assertEquals("Incorrect type", customSub.getType(), result.getType());
        assertEquals("Incorrect key", customSub.getKey(), result.getKey());
        assertEquals("Incorrect extends", customSub.getExtends(),
            result.getExtends());


        assertSame("Result was not registered in the module config", result,
            moduleConfig.findExceptionConfig("java.lang.IllegalStateException"));
    }

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