abstractbean.java

来自「web版的SVN客户端」· Java 代码 · 共 72 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.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.polarion.svnwebclient.SVNWebClientException;
import org.polarion.svnwebclient.data.AuthenticationException;
import org.polarion.svnwebclient.data.DataProviderException;
import org.polarion.svnwebclient.data.IDataProvider;
import org.polarion.svnwebclient.web.SystemInitializing;
import org.polarion.svnwebclient.web.support.AbstractRequestHandler;
import org.polarion.svnwebclient.web.support.State;


/**
 * 
 * @author <A HREF="mailto:[e-mail]">Polarion Software </A>
 */
public abstract class AbstractBean implements IBean {
    protected State state;
    protected AbstractRequestHandler requestHandler;
            
    public boolean execute(HttpServletRequest request, HttpServletResponse response) throws SVNWebClientException {
        this.state = new State(request, response);
        this.requestHandler = this.getRequestHandler(request);   
        IDataProvider dataProvider = null;
        SystemInitializing initialize = new SystemInitializing();
        try {
        	dataProvider = initialize.init(request, response, this.requestHandler);
        	if (dataProvider == null) {
        		return false;
        	} else {
        		return this.executeSVNOperation(dataProvider);        		
        	}
        } catch (AuthenticationException e) {        	        	        	    			
			initialize.redirectToRestrictPage();
			return false;    			    			            
        } catch (SVNWebClientException e) {        	
        	Logger.getLogger(this.getClass()).error(e, e);                
        	throw new SVNWebClientException(e);
        } finally {
            if (dataProvider != null) {
                try {
                    dataProvider.close();
                } catch (DataProviderException e) {
                }
            }
        }                        
    }    
                 
    protected abstract boolean executeSVNOperation(IDataProvider dataProvider) throws SVNWebClientException;
    protected abstract AbstractRequestHandler getRequestHandler(HttpServletRequest request); 
}