log4jreport.java

java编写的OCR软件

package de.spieleck.app.jacson.report;

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


import de.spieleck.app.jacson.JacsonState;
import de.spieleck.app.jacson.util.ConfigUtil;
import de.spieleck.config.ConfigNode;
import de.spieleck.config.ConfigVerify.Acceptor;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.Map;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;



/**
 * Feed the Jacson output events to log4j and whereever log4j puts it.
 * Note this first implementation uses excessive String concatenation
 * and is not fast.
 * @author fsn
 * @author Patrick Carl
 */
public class Log4jReport
    implements JacsonReport, Acceptor
{
    /** Config: Name of the log4j configuration file. */
    public final static String LOG4J_CONFIG = "config";
    
    /** Config: Reread log4j configuration file. */
    public final static String LOG4J_REREAD = "reread";
    
    /** Nesting of groups */
    LinkedList begins; 

    /** hash the Logger's */
    Map loggers;

    /** Keep a stringbuffer for concatenation if sections */
    StringBuffer sb;

    private JacsonState state;
    
    public Log4jReport() { }

    public void init(ConfigNode config)
        throws JacsonConfigException
    {
        begins = new LinkedList();
        loggers = new HashMap(20);
        sb = new StringBuffer(200);
        ConfigUtil.verify(config, this);
        String log4jConfig = config.getString(LOG4J_CONFIG, null);
        String reread = config.getString(LOG4J_REREAD, null);
        if ( log4jConfig == null )
        {
            BasicConfigurator.configure();
        }
        else
        {
            int rr = 1000;
            try
            {
                rr = Integer.parseInt(reread);
            }
            catch ( Exception e ) 
            { 
                reread = null;
            }
            if ( reread != null )
                PropertyConfigurator.configureAndWatch(log4jConfig, rr);
            else
                PropertyConfigurator.configure(log4jConfig);
        }
    }

    public boolean accept(ConfigNode cn)
    {
        return cn.getName().equals(LOG4J_CONFIG);
    }

    public void begin(String id)
    {
        begins.addLast(id);
    }

    public void report(String localName, String value)
    {
        Iterator it = begins.iterator();
        sb.setLength(0);
        while ( it.hasNext() )
            sb.append(it.next()).append('.');
        sb.append(localName);
        String key = sb.toString();
        Logger l = (Logger) loggers.get(key);
        if ( l == null )
        {
            l = Logger.getLogger(key);
            loggers.put(key, l);
        }
        l.info(value);
    }

    public void end()
    {
        begins.removeLast();
    }

    public void finish()
    {
        finish(true);
    }

    public void finish(boolean close)
    {
        if ( close )
            loggers.clear();
    }
    
    public void registerState(JacsonState state) 
    {
        this.state = state;
    }
    
    public JacsonState getRegState() {
        return state;
    }
    
}
//
//    Jacson - Text Filtering with Java.
//    Copyright (C) 2002 Frank S. Nestel (nestefan -at- users.sourceforge.net)
//
//    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
//