/*
 * Copyright (c) 2002-2003, Atlassian Software Systems Pty Ltd All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 *     * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.
 *     * Neither the name of Atlassian Software Systems Pty Ltd nor the names of
 * its contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.opensymphony.xwork2.util.profiling;

import java.util.ArrayList;
import java.util.List;

/**
 * Bean to contain information about the pages profiled
 *
 * @author <a href="mailto:mike@atlassian.com">Mike Cannon-Brookes</a>
 * @author <a href="mailto:scott@atlassian.com">Scott Farquhar</a>
 * 
 * @version $Date$ $Id$
 */
public class ProfilingTimerBean implements java.io.Serializable {
	
	private static final long serialVersionUID = -6180672043920208784L;
	
	List<ProfilingTimerBean> children = new ArrayList<ProfilingTimerBean>();
    ProfilingTimerBean parent = null;

    String resource;

    long startTime;
    long totalTime;

    public ProfilingTimerBean(String resource)
    {
        this.resource = resource;
    }

    protected void addParent(ProfilingTimerBean parent)
    {
        this.parent = parent;
    }

    public ProfilingTimerBean getParent()
    {
        return parent;
    }


    public void addChild(ProfilingTimerBean child)
    {
        children.add(child);
        child.addParent(this);
    }


    public void setStartTime()
    {
        this.startTime = System.currentTimeMillis();
    }

    public void setEndTime()
    {
        this.totalTime = System.currentTimeMillis() - startTime;
    }

    public String getResource()
    {
        return resource;
    }

    /**
     * Get a formatted string representing all the methods that took longer than a specified time.
     */

    public String getPrintable(long minTime)
    {
        return getPrintable("", minTime);
    }

    protected String getPrintable(String indent, long minTime)
    {
        //only print the value if we are larger or equal to the min time.
        if (totalTime >= minTime)
        {
            StringBuilder buffer = new StringBuilder();
            buffer.append(indent);
            buffer.append("[" + totalTime + "ms] - " + resource);
            buffer.append("\n");

            for (ProfilingTimerBean aChildren : children) {
                buffer.append((aChildren).getPrintable(indent + "  ", minTime));
            }

            return buffer.toString();
        }
        else
            return "";
    }
}