googleevaluator.java

java编写的OCR软件

/*
    Jacson
    Copyright (C) 2003 Patrick Carl, [e-mail]
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.
 
    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Lesser General Public License for more details.
 
    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
    $Id: GoogleEvaluator.java 13 2005-09-28 06:02:56Z pcs $
 
 */

package de.spieleck.app.jacson.eval;

import de.spieleck.config.ConfigNode;
import de.spieleck.config.ConfigVerify.Acceptor;


import de.spieleck.app.jacson.JacsonException;
import de.spieleck.app.jacson.JacsonRegistry;
import de.spieleck.app.jacson.JacsonReport;
import de.spieleck.app.jacson.JacsonConfigException;

import de.spieleck.app.jacson.util.ConfigUtil;

import com.google.soap.search.GoogleSearchFault;
import com.google.soap.search.GoogleSearch;
import com.google.soap.search.GoogleSearchResultElement;
/**
 * The GoogleEvaluator searches for the chunks it receives at Google.
 * @author  Patrick Carl
 */
public class GoogleEvaluator extends EvaluatorBase implements Acceptor {
    
    public static final String GOOGLE_KEY_NODE = "googlekey";
    
    protected GoogleSearch search;
    protected StringBuffer query;
    
    public void init(ConfigNode config, JacsonRegistry registry)
    throws JacsonConfigException {
        String key = config.getString(GOOGLE_KEY_NODE,  null);
        if(key == null)
            ConfigUtil.exception(
              "No google key specified for GoogleEvaluator",config);
        
        search = new GoogleSearch();
        search.setKey(key);
        
        query = new StringBuffer();
        
        ConfigUtil.verify(config, this);
    }
    
    public boolean accept(ConfigNode config){
        String name = config.getName();
        return name.equals(GOOGLE_KEY_NODE);
    }
    
    public void putChunk(String ch) throws JacsonException {
        query = query.append(ch + " ");
    }
    
    public void summary(){
        JacsonReport rep = getRegReport();
        String query = this.query.toString();
        search.setQueryString(query);
        GoogleSearchResultElement[] results = null;
        try{
            results = search.doSearch().getResultElements();
        } catch(GoogleSearchFault ex){
            rep.report("Google Exception", ex.getMessage());
        }
        
        if(results != null){
            int l = results.length;
            rep.report("Number Of SearchResults", "" + l);
            rep.report("Google Query", query);
            for(int i = 0; i < l; i++){
                rep.report("Search Result", results[i].getURL());
            }
        }
    }
}