name.martingeisse.gargl.application.wicket.GarglExceptionMapper.java Source code

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Here is the source code for name.martingeisse.gargl.application.wicket.GarglExceptionMapper.java

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/**
 * Copyright (c) 2010 Martin Geisse
 *
 * This file is distributed under the terms of the MIT license.
 */

package name.martingeisse.gargl.application.wicket;

import name.martingeisse.common.security.authorization.PermissionDeniedException;
import org.apache.commons.lang3.exception.ExceptionUtils;
import org.apache.log4j.Logger;
import org.apache.wicket.DefaultExceptionMapper;
import org.apache.wicket.request.IExceptionMapper;
import org.apache.wicket.request.IRequestHandler;
import org.apache.wicket.request.Response;
import org.apache.wicket.request.cycle.RequestCycle;
import org.apache.wicket.request.http.WebResponse;

/**
 * {@link IExceptionMapper} implementation.
 */
public final class GarglExceptionMapper extends DefaultExceptionMapper {

    /**
     * the logger
     */
    @SuppressWarnings("unused")
    private static Logger logger = Logger.getLogger(GarglExceptionMapper.class);

    /* (non-Javadoc)
     * @see org.apache.wicket.request.IExceptionMapper#map(java.lang.Exception)
     */
    @Override
    public IRequestHandler map(Exception e) {
        try {

            // we're not interested in wrapping exceptions, so get the original one
            Throwable originalException = ExceptionUtils.getRootCause(e);

            // disable caching for error pages
            final Response response = RequestCycle.get().getResponse();
            if (response instanceof WebResponse) {
                ((WebResponse) response).disableCaching();
            }

            // check for specific exceptions
            if (originalException instanceof PermissionDeniedException) {
                // return new RenderPageRequestHandler(new PageProvider(PermissionDeniedPage.class), RedirectPolicy.ALWAYS_REDIRECT);
            }

        } catch (final RuntimeException e2) {
            // log this exception, then use default mapping for the original exception
            logger.error("nested exception in GarglExceptionMapper", e2);
        }

        // fall back to default beahvior
        return super.map(e);

    }

}