contentservlet.java

来自「web版的SVN客户端」· Java 代码 · 共 90 行

/*
 * Copyright (c) 2004, 2005 Polarion Software, All rights reserved.
 * Email: [e-mail]
 *
 * This program and the accompanying materials are made available under the
 * terms of the Apache License, Version 2.0 (the "License"). You may not use
 * this file except in compliance with the License. Copy of the License is
 * located in the file LICENSE.txt in the project distribution. You may also
 * obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 *
 * POLARION SOFTWARE MAKES NO REPRESENTATIONS OR WARRANTIES
 * ABOUT THE SUITABILITY OF THE SOFTWARE, EITHER EXPRESSED OR IMPLIED,
 * INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. POLARION SOFTWARE
 * SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT
 * OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 */
package org.polarion.svnwebclient.web.servlet;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.polarion.svnwebclient.SVNWebClientException;
import org.polarion.svnwebclient.data.IDataProvider;
import org.polarion.svnwebclient.web.resource.Links;
import org.polarion.svnwebclient.web.support.RequestHandler;

/**
 * 
 * @author <A HREF="mailto:[e-mail]">Polarion Software </A>
 */
public class ContentServlet extends AbstractServlet {
    private static final long serialVersionUID = 6366555973363747975L;

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.execute(request, response);
    }
    
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.execute(request, response);
    }    
    
    protected void executeSVNOperation(IDataProvider dataProvider) throws SVNWebClientException {
        long headRevision = dataProvider.getHeadRevision();
        long revision = headRevision;
        if (this.requestHandler.getCurrentRevision() != -1) {
            revision = this.requestHandler.getCurrentRevision();
        }
        String url = this.requestHandler.getUrl();
        if (this.requestHandler.getPegRevision() != -1) {
            url = dataProvider.getLocation(this.requestHandler.getUrl(), this.requestHandler.getPegRevision(), revision);
        }
        
        int type = dataProvider.checkUrl(url, revision);
        if (type == IDataProvider.DIRECTORY) {
            this.forward(Links.DIRECTORY_CONTENT);
        } else if (type == IDataProvider.FILE) {
            this.forward(Links.FILE_CONTENT);            
        } else {
            this.toMainPage();
        }
    }

    protected void forward(String page) throws SVNWebClientException {
        try {
            RequestDispatcher dispatcher = this.state.getRequest().getRequestDispatcher(page);
            dispatcher.forward(this.state.getRequest(), this.state.getResponse());
        } catch (Exception e) {
            throw new SVNWebClientException(e);
        }
    }
    
    protected void toMainPage() throws SVNWebClientException {
        try {
            this.state.getResponse().sendRedirect("");
        } catch (Exception e) {
            throw new SVNWebClientException(e);
        }
    }
    
    protected RequestHandler getRequestHandler(HttpServletRequest request) {
        return new RequestHandler(request);
    }
}