abstractrequesthandler.java

web版的SVN客户端

/*
 * 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.support;

import javax.servlet.http.HttpServletRequest;

import org.polarion.svnwebclient.configuration.ConfigurationProvider;
import org.polarion.svnwebclient.util.UrlUtil;

/**
 * 
 * @author <A HREF="mailto:[e-mail]">Polarion Software </A>
 */
public abstract class AbstractRequestHandler {
    protected HttpServletRequest request;
    
    public AbstractRequestHandler(HttpServletRequest request) {
        this.request = request;
    }
    
    public String getUrl() {
        String value = this.request.getParameter(RequestParameters.URL);
        if (value == null) {
            value = "";
        }
        return value;
    }
    
    public String getLocation() {
    	String res = "";
    	if (ConfigurationProvider.getInstance().isMultiRepositoryMode()) {
    		res = this.request.getParameter(RequestParameters.LOCATION);
            if (res == null) {
                res = "";
            }
    	} 
    	return res;
    }
    
    public long getCurrentRevision() {
        long ret = -1;
        String value = this.request.getParameter(RequestParameters.CREV);
        if (value != null) {
            try {
                ret = Long.parseLong(value);
            } catch (NumberFormatException e) {
            }            
        }
        return ret;
    }
    
    public long getPegRevision() {
        long ret = -1;
        String value = this.request.getParameter(RequestParameters.PEGREV);
        if (value != null) {
            try {
                ret = Long.parseLong(value);
            } catch (NumberFormatException e) {
            }            
        }
        return ret;
    }    
    
    public long getRevision() {
        long ret = -1;
        String value = this.request.getParameter(RequestParameters.REV);        
        if (value != null) {
            try {
                ret = Long.parseLong(value);
            } catch (NumberFormatException e) {            
            }            
        }
        return ret;
    }        
    
    public long getRevisionCount() {
        long ret = 0;
        String value = this.request.getParameter(RequestParameters.REVCOUNT);
        if (value != null) {
            try {
                ret = Long.parseLong(value);
            } catch (NumberFormatException e) {
            }            
        }
        return ret;        
    }
    
    public String getView() {
        return this.request.getParameter(RequestParameters.VIEW);
    }
    
    public long getStartRevision() {
        long ret = -1;
        String value = this.request.getParameter(RequestParameters.STARTREV);
        if (value != null) {
            try {
                ret = Long.parseLong(value);
            } catch (NumberFormatException e) {
            }            
        }
        return ret;        
    }
    
    public long getEndRevision() {
        long ret = -1;
        String value = this.request.getParameter(RequestParameters.ENDREV);
        if (value != null) {
            try {
                ret = Long.parseLong(value);
            } catch (NumberFormatException e) {
            }            
        }
        return ret;        
    }
    
    public String getUrlPrefix() {
        String value = this.request.getParameter(RequestParameters.PREFIX);
        if (value == null) {
            value = "";
        }
        return UrlUtil.decode(value);
    }
    
    public String getUrlSuffix() {
        String value = this.request.getParameter(RequestParameters.SUFFIX);
        if (value == null) {
            value = "";
        }
        return UrlUtil.decode(value);        
    }
    
    public String getType() {
        return this.request.getParameter(RequestParameters.TYPE);
    }
    
    public String getSortOrder() {
        return this.request.getParameter(RequestParameters.SORT_ORDER);
    }
    
    public String getSortField() {
        return this.request.getParameter(RequestParameters.SORT_FIELD);
    }
    
    public String getAction() {
        return this.request.getParameter(RequestParameters.ACTION);
    }
    
    public String getUsername() {
        String value = this.request.getParameter(RequestParameters.USERNAME);
        if (value == null) {
            value = "";
        }
        return value;        
    }

    
    public String getPassword() {
        String value = this.request.getParameter(RequestParameters.PASSWORD);
        if (value == null) {
            value = "";
        }
        return value;        
    }
    
    public String getRepositoryName() {
    	String value = this.request.getParameter(RequestParameters.LOCATION);
        if (value == null) {
            value = "";
        }
        return value;
    }
    
    public boolean isAttachment() {
        String value = this.request.getParameter(RequestParameters.ATTACHMENT);
        if (RequestParameters.VALUE_TRUE.equals(value)) {
            return true;
        } else {
            return false;
        }
    }
    
    public abstract void check() throws RequestException;
    
    protected void checkNotNull(String parameterName) throws RequestException {
        String value = this.request.getParameter(parameterName);
        if (value == null) {
            throw new RequestException(parameterName + " request parameter must be defined");
        }        
    }
    
    protected void checkNotNullOrEmpty(String parameterName) throws RequestException {
        String value = this.request.getParameter(parameterName);
        if (value == null) {
            throw new RequestException(parameterName + " request parameter must be defined");
        }
        value = value.trim();
        if (value.length() == 0) {
            throw new RequestException("Invalid value \"" + value + "\" of " + parameterName + " request parameter. " + 
                    "It must be not empty string");            
        }        
    }
    
    protected void checkLong(String parameterName) throws RequestException {
        String value = this.request.getParameter(parameterName);
        if (value == null) {
            throw new RequestException(parameterName + " request parameter must be defined");
        }
        try {
            Long.parseLong(value);
        } catch (NumberFormatException e) {
            throw new RequestException("Invalid value \"" + value + "\" of " + parameterName + " request parameter. " + 
                    "It must be numeric");                        
        }
    }
    
    public long getLine() {
        long line = 0;
        String lineParam = this.request.getParameter(RequestParameters.LINE);
        if (lineParam != null) {
            try {
                line = Integer.parseInt(lineParam);
            } catch (NumberFormatException e) {
            }            
        }
        return line;
    }
    
}