com.cyclopsgroup.waterview.valves.ParseURLValve.java Source code

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Here is the source code for com.cyclopsgroup.waterview.valves.ParseURLValve.java

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/* ==========================================================================
 * Copyright 2002-2004 Cyclops Group Community
 * 
 * Licensed under the Open Software License, Version 2.1 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://opensource.org/licenses/osl-2.1.php
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 * =========================================================================
 */
package com.cyclopsgroup.waterview.valves;

import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.logger.AbstractLogEnabled;
import org.apache.commons.lang.StringUtils;

import com.cyclopsgroup.clib.lang.Context;
import com.cyclopsgroup.waterview.PageRuntime;
import com.cyclopsgroup.waterview.PipelineContext;
import com.cyclopsgroup.waterview.Valve;

/**
 * Valve to prepare information contained by URL
 * 
 * @author <a href="mailto:jiaqi.guo@gmail.com">Jiaqi Guo </a>
 */
public class ParseURLValve extends AbstractLogEnabled implements Valve, Configurable {

    private String defaultPage = "Index.jelly";

    /**
     * Override or implement method of parent class or interface
     *
     * @see org.apache.avalon.framework.configuration.Configurable#configure(org.apache.avalon.framework.configuration.Configuration)
     */
    public void configure(Configuration conf) throws ConfigurationException {
        String page = conf.getChild("default-page").getValue(null);
        if (page != null) {
            defaultPage = page;
        }
    }

    /**
     * Override or implement method of parent class or interface
     *
     * @see com.cyclopsgroup.waterview.Valve#invoke(com.cyclopsgroup.waterview.PageRuntime, com.cyclopsgroup.waterview.PipelineContext)
     */
    public void invoke(PageRuntime runtime, PipelineContext context) throws Exception {
        Context ctx = runtime.getPageContext();
        ctx.put("runtime", runtime);
        ctx.put("context", ctx);
        ctx.put("params", runtime.getRequestParameters());
        ctx.put("applicationBase", runtime.getApplicationBaseUrl());
        ctx.put("pageBase", runtime.getPageBaseUrl());
        String path = runtime.getRequestPath();
        if (path.indexOf('|') != -1) {
            String[] parts = StringUtils.split(path, '|');
            for (int i = 0; i < parts.length; i++) {
                String part = parts[i];
                if (i == parts.length - 1) {
                    path = part;
                } else {
                    runtime.getActions().add(part);
                }
            }
        }
        if (StringUtils.isEmpty(path)) {
            path = defaultPage;
        }
        runtime.setPage(path);
        ctx.put("page", path);
        context.invokeNextValve(runtime);
    }
}