com.jaeksoft.searchlib.util.Debug.java Source code

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Here is the source code for com.jaeksoft.searchlib.util.Debug.java

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/**   
 * License Agreement for OpenSearchServer
 *
 * Copyright (C) 2008-2009 Emmanuel Keller / Jaeksoft
 * 
 * http://www.open-search-server.com
 * 
 * This file is part of OpenSearchServer.
 *
 * OpenSearchServer is free software: you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 * OpenSearchServer 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with OpenSearchServer. 
 *  If not, see <http://www.gnu.org/licenses/>.
 **/

package com.jaeksoft.searchlib.util;

import java.io.PrintWriter;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.apache.commons.lang.StringEscapeUtils;

public class Debug {

    private List<Debug> childrens;

    private String info;

    private long startTime;

    private long elapsedTime;

    private String className;

    private int hc;

    public Debug() {
        childrens = null;
        className = null;
        info = null;
        startTime = System.currentTimeMillis();
    }

    public void setInfo(Object object) {
        if (object != null) {
            this.className = object.getClass().getCanonicalName();
            this.info = object.toString();
            this.hc = object.hashCode();
        }
        this.elapsedTime = System.currentTimeMillis() - startTime;
    }

    public Debug addChildren() {
        return addChildren(new Debug());
    }

    public Debug addChildren(Debug debug) {
        if (debug == null)
            return null;
        synchronized (this) {
            if (childrens == null)
                childrens = new ArrayList<Debug>();
            childrens.add(debug);
        }
        return debug;
    }

    private DateFormat dtdf = DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.FULL);

    public void xmlInfo(PrintWriter writer) {
        writer.print("<debug start=\"");
        writer.print(dtdf.format(new Date(startTime)));
        writer.print("\" elapsed=\"");
        writer.print(elapsedTime);
        writer.print("\" info=\"");
        writer.print(StringEscapeUtils.escapeJava(StringEscapeUtils.escapeXml(info)));
        writer.print("\" hashCode=\"");
        writer.print(hc);
        writer.print("\" class=\"");
        writer.print(className);
        writer.print("\">");
        if (childrens != null)
            for (Debug children : childrens)
                children.xmlInfo(writer);
        writer.print("</debug>");
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();
        sb.append(dtdf.format(new Date(startTime)));
        sb.append(" elapsed:");
        sb.append(elapsedTime);
        sb.append(" info:");
        sb.append(info);
        sb.append(" class:");
        sb.append(" className:");
        return sb.toString();
    }
}