2010-09-12 Francois Chouinard <fchouinard@gmail.com> Fix for Bug316349

[deliverable/tracecompass.git] / org.eclipse.linuxtools.tmf / src / org / eclipse / linuxtools / tmf / request / TmfCoalescedEventRequest.java

/*******************************************************************************
 * Copyright (c) 2009, 2010 Ericsson
 * 
 * All rights reserved. This program and the accompanying materials are
 * made available under the terms of the Eclipse Public License v1.0 which
 * accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *   Francois Chouinard - Initial API and implementation
 *******************************************************************************/

package org.eclipse.linuxtools.tmf.request;

import org.eclipse.linuxtools.tmf.event.TmfEvent;
import org.eclipse.linuxtools.tmf.event.TmfTimeRange;
import org.eclipse.linuxtools.tmf.event.TmfTimestamp;

/**
 * <b><u>TmfCoalescedEventRequest</u></b>
 * <p>
 * TODO: Implement me. Please.
 */
public class TmfCoalescedEventRequest<T extends TmfEvent> extends TmfCoalescedDataRequest<T> implements ITmfEventRequest<T> {

    // ------------------------------------------------------------------------
    // Attributes
    // ------------------------------------------------------------------------

	private TmfTimeRange fRange;	// The requested events time range

    // ------------------------------------------------------------------------
    // Constructor
    // ------------------------------------------------------------------------

    /**
     * @param range
     */
    public TmfCoalescedEventRequest(Class<T> dataType) {
        this(dataType, TmfTimeRange.Eternity, ALL_DATA, DEFAULT_BLOCK_SIZE, ExecutionType.SHORT);
    }

    public TmfCoalescedEventRequest(Class<T> dataType, ExecutionType execType) {
        this(dataType, TmfTimeRange.Eternity, ALL_DATA, DEFAULT_BLOCK_SIZE, execType);
    }

    /**
     * @param range
     */
    public TmfCoalescedEventRequest(Class<T> dataType, TmfTimeRange range) {
        this(dataType, range, ALL_DATA, DEFAULT_BLOCK_SIZE, ExecutionType.SHORT);
    }

    public TmfCoalescedEventRequest(Class<T> dataType, TmfTimeRange range, ExecutionType execType) {
        this(dataType, range, ALL_DATA, DEFAULT_BLOCK_SIZE, execType);
    }

    /**
     * @param range
     * @param nbRequested
     */
    public TmfCoalescedEventRequest(Class<T> dataType, TmfTimeRange range, int nbRequested) {
        this(dataType, range, nbRequested, DEFAULT_BLOCK_SIZE, ExecutionType.SHORT);
    }
    
    public TmfCoalescedEventRequest(Class<T> dataType, TmfTimeRange range, int nbRequested, ExecutionType execType) {
        this(dataType, range, nbRequested, DEFAULT_BLOCK_SIZE, execType);
    }
    
    /**
     * @param range
     * @param nbRequested
     * @param blockSize Size of the largest blocks expected
     */
    public TmfCoalescedEventRequest(Class<T> dataType, TmfTimeRange range, int nbRequested, int blockSize) {
    	super(dataType, 0, nbRequested, blockSize, ExecutionType.SHORT);
    	fRange = range;
    }

    public TmfCoalescedEventRequest(Class<T> dataType, TmfTimeRange range, int nbRequested, int blockSize, ExecutionType execType) {
    	super(dataType, 0, nbRequested, blockSize, execType);
    	fRange = range;
    }

    // ------------------------------------------------------------------------
    // Management
    // ------------------------------------------------------------------------

	@Override
	public boolean isCompatible(ITmfDataRequest<T> request) {
		if (request instanceof ITmfEventRequest<?>) {
			boolean ok = getNbRequested() == request.getNbRequested();
			ok &= getBlockize() == request.getBlockize();
			ok &= getExecType() == request.getExecType();
			if (ok) {
				TmfTimestamp startTime = ((ITmfEventRequest<T>) request).getRange().getStartTime();
				TmfTimestamp endTime   = ((ITmfEventRequest<T>) request).getRange().getEndTime();
				if (!fRange.contains(startTime))
					fRange = new TmfTimeRange(startTime, fRange.getEndTime());
				if (!fRange.contains(endTime))
					fRange = new TmfTimeRange(fRange.getStartTime(), endTime);
			}
			return ok;
		}
		return false;
	}

    // ------------------------------------------------------------------------
    // ITmfDataRequest
    // ------------------------------------------------------------------------

    @Override
	public void handleData() {
    	for (ITmfDataRequest<T> request : fRequests) {
			if (request instanceof TmfEventRequest<?>) {
    			TmfEventRequest<T> req = (TmfEventRequest<T>) request;
    			T[] data = getData();
    			TmfTimestamp ts = data[0].getTimestamp();
        		if (data.length > 0 && req.getRange().contains(ts)) {
            		req.setData(data);
            		req.handleData();
        		}
    		}
    		else {
    			TmfDataRequest<T> req = (TmfDataRequest<T>) request;
    			T[] data = getData();
        		req.setData(data);
        		req.handleData();
    		}
    	}
    }

    // ------------------------------------------------------------------------
    // ITmfEventRequest
    // ------------------------------------------------------------------------

	public TmfTimeRange getRange() {
		return fRange;
	}
	
    // ------------------------------------------------------------------------
    // Object
    // ------------------------------------------------------------------------

    @Override
    // All requests have a unique id
    public int hashCode() {
    	return super.hashCode();
    }

    @Override
    public boolean equals(Object other) {
    	if (other instanceof TmfCoalescedEventRequest<?>) {
    		TmfCoalescedEventRequest<?> request = (TmfCoalescedEventRequest<?>) other;
       		return 	(request.getDataType()    == getDataType()) &&
       				(request.getIndex()       == getIndex())    &&
       				(request.getNbRequested() == getNbRequested()) &&
       	    		(request.getRange().equals(getRange()));
       	}
    	if (other instanceof TmfCoalescedDataRequest<?>) {
       		return super.equals(other);
    	}
  		return false;
    }

    @Override
    public String toString() {
		return "[TmfCoalescedEventRequest(" + getRequestId() + "," + getDataType().getSimpleName() 
			+ "," + getRange() + "," + getNbRequested() + "," + getBlockize() + ")]";
    }

}