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/*******************************************************************************
* 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.internal.tmf.core.request;
import org.eclipse.linuxtools.internal.tmf.core.Tracer;
import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
import org.eclipse.linuxtools.tmf.core.event.ITmfTimestamp;
import org.eclipse.linuxtools.tmf.core.event.TmfTimeRange;
import org.eclipse.linuxtools.tmf.core.request.ITmfDataRequest;
import org.eclipse.linuxtools.tmf.core.request.ITmfEventRequest;
import org.eclipse.linuxtools.tmf.core.request.TmfDataRequest;
/**
* The TMF coalesced event request
*
* @version 1.0
* @author Francois Chouinard
*/
public class TmfCoalescedEventRequest extends TmfCoalescedDataRequest implements ITmfEventRequest {
// ------------------------------------------------------------------------
// Attributes
// ------------------------------------------------------------------------
private TmfTimeRange fRange; // The requested events time range
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
/**
* Request all the events of a given type (high priority)
* Events are returned in blocks of the default size (DEFAULT_BLOCK_SIZE).
*
* @param dataType the requested data type
*/
public TmfCoalescedEventRequest(Class<? extends ITmfEvent> dataType) {
this(dataType, TmfTimeRange.ETERNITY, ALL_DATA, DEFAULT_BLOCK_SIZE, ExecutionType.FOREGROUND);
}
/**
* Request all the events of a given type (given priority)
* Events are returned in blocks of the default size (DEFAULT_BLOCK_SIZE).
*
* @param dataType the requested data type
* @param priority the requested execution priority
*/
public TmfCoalescedEventRequest(Class<? extends ITmfEvent> dataType, ExecutionType priority) {
this(dataType, TmfTimeRange.ETERNITY, ALL_DATA, DEFAULT_BLOCK_SIZE, priority);
}
/**
* Request all the events of a given type for the given time range (high priority)
* Events are returned in blocks of the default size (DEFAULT_BLOCK_SIZE).
*
* @param dataType the requested data type
* @param range the time range of the requested events
*/
public TmfCoalescedEventRequest(Class<? extends ITmfEvent> dataType, TmfTimeRange range) {
this(dataType, range, ALL_DATA, DEFAULT_BLOCK_SIZE, ExecutionType.FOREGROUND);
}
/**
* Request all the events of a given type for the given time range (given priority)
* Events are returned in blocks of the default size (DEFAULT_BLOCK_SIZE).
*
* @param dataType the requested data type
* @param range the time range of the requested events
* @param priority the requested execution priority
*/
public TmfCoalescedEventRequest(Class<? extends ITmfEvent> dataType, TmfTimeRange range, ExecutionType priority) {
this(dataType, range, ALL_DATA, DEFAULT_BLOCK_SIZE, priority);
}
/**
* Request 'n' events of a given type from the given time range (high priority)
* Events are returned in blocks of the default size (DEFAULT_BLOCK_SIZE).
*
* @param dataType the requested data type
* @param range the time range of the requested events
* @param nbRequested the number of events requested
*/
public TmfCoalescedEventRequest(Class<? extends ITmfEvent> dataType, TmfTimeRange range, int nbRequested) {
this(dataType, range, nbRequested, DEFAULT_BLOCK_SIZE, ExecutionType.FOREGROUND);
}
/**
* Request 'n' events of a given type for the given time range (given priority)
* Events are returned in blocks of the default size (DEFAULT_BLOCK_SIZE).
*
* @param dataType the requested data type
* @param range the time range of the requested events
* @param nbRequested the number of events requested
* @param priority the requested execution priority
*/
public TmfCoalescedEventRequest(Class<? extends ITmfEvent> dataType, TmfTimeRange range, int nbRequested, ExecutionType priority) {
this(dataType, range, nbRequested, DEFAULT_BLOCK_SIZE, priority);
}
/**
* Request 'n' events of a given type for the given time range (high priority).
* Events are returned in blocks of the given size.
*
* @param dataType the requested data type
* @param range the time range of the requested events
* @param nbRequested the number of events requested
* @param blockSize the number of events per block
*/
public TmfCoalescedEventRequest(Class<? extends ITmfEvent> dataType, TmfTimeRange range, int nbRequested, int blockSize) {
this(dataType, range, 0, nbRequested, blockSize, ExecutionType.FOREGROUND);
}
/**
* Request 'n' events of a given type for the given time range (given priority).
* Events are returned in blocks of the given size.
*
* @param dataType the requested data type
* @param range the time range of the requested events
* @param nbRequested the number of events requested
* @param blockSize the number of events per block
* @param priority the requested execution priority
*/
public TmfCoalescedEventRequest(Class<? extends ITmfEvent> dataType, TmfTimeRange range, int nbRequested, int blockSize, ExecutionType priority) {
this(dataType, range, 0, nbRequested, blockSize, priority);
}
/**
* Request 'n' events of a given type for the given time range (given priority).
* Events are returned in blocks of the given size.
*
* @param dataType the requested data type
* @param range the time range of the requested events
* @param index the index of the first event to retrieve
* @param nbRequested the number of events requested
* @param blockSize the number of events per block
* @param priority the requested execution priority
*/
public TmfCoalescedEventRequest(Class<? extends ITmfEvent> dataType, TmfTimeRange range, long index, int nbRequested, int blockSize, ExecutionType priority) {
super(dataType, index, nbRequested, blockSize, priority);
fRange = range;
if (Tracer.isRequestTraced()) {
String type = getClass().getName();
type = type.substring(type.lastIndexOf('.') + 1);
@SuppressWarnings("nls")
String message = "CREATED "
+ (getExecType() == ITmfDataRequest.ExecutionType.BACKGROUND ? "(BG)" : "(FG)")
+ " Type=" + type + " Index=" + getIndex() + " NbReq=" + getNbRequested()
+ " Range=" + getRange()
+ " DataType=" + getDataType().getSimpleName();
Tracer.traceRequest(this, message);
}
}
// ------------------------------------------------------------------------
// Management
// ------------------------------------------------------------------------
@Override
public void addRequest(ITmfDataRequest request) {
super.addRequest(request);
if (request instanceof ITmfEventRequest) {
merge((ITmfEventRequest) request);
}
}
@Override
public boolean isCompatible(ITmfDataRequest request) {
if (request instanceof ITmfEventRequest) {
if (super.isCompatible(request)) {
return overlaps((ITmfEventRequest) request);
}
}
return false;
}
private boolean overlaps(ITmfEventRequest request) {
ITmfTimestamp startTime = request.getRange().getStartTime();
ITmfTimestamp endTime = request.getRange().getEndTime();
return (startTime.compareTo(endTime) <= 0) && (fRange.getStartTime().compareTo(fRange.getEndTime()) <= 0);
}
private void merge(ITmfEventRequest request) {
ITmfTimestamp startTime = request.getRange().getStartTime();
ITmfTimestamp endTime = request.getRange().getEndTime();
if (!fRange.contains(startTime) && fRange.getStartTime().compareTo(startTime) > 0) {
fRange = new TmfTimeRange(startTime, fRange.getEndTime());
}
if (!fRange.contains(endTime) && fRange.getEndTime().compareTo(endTime) < 0) {
fRange = new TmfTimeRange(fRange.getStartTime(), endTime);
}
}
// ------------------------------------------------------------------------
// ITmfDataRequest
// ------------------------------------------------------------------------
@Override
public void handleData(ITmfEvent data) {
super.handleData(data);
long index = getIndex() + getNbRead() - 1;
for (ITmfDataRequest request : fRequests) {
if (data == null) {
request.handleData(null);
} else {
long start = request.getIndex();
long end = start + request.getNbRequested();
if (request instanceof ITmfEventRequest) {
ITmfEventRequest req = (ITmfEventRequest) request;
if (!req.isCompleted() && index >= start && index < end) {
ITmfTimestamp ts = data.getTimestamp();
if (req.getRange().contains(ts)) {
if (req.getDataType().isInstance(data)) {
req.handleData(data);
}
}
}
}
else {
TmfDataRequest req = (TmfDataRequest) request;
if (!req.isCompleted() && index >= start && index < end) {
if (req.getDataType().isInstance(data)) {
req.handleData(data);
}
}
}
}
}
}
// ------------------------------------------------------------------------
// ITmfEventRequest
// ------------------------------------------------------------------------
@Override
public TmfTimeRange getRange() {
return fRange;
}
@Override
public void setStartIndex(int index) {
setIndex(index);
}
// ------------------------------------------------------------------------
// 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
@SuppressWarnings("nls")
public String toString() {
return "[TmfCoalescedEventRequest(" + getRequestId() + "," + getDataType().getSimpleName()
+ "," + getRange() + "," + getIndex() + "," + getNbRequested() + "," + getBlockSize() + ")]";
}
}
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