eu.stratosphere.nephele.managementgraph.ManagementGroupEdge Maven / Gradle / Ivy
/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
**********************************************************************************************************************/
package eu.stratosphere.nephele.managementgraph;
import eu.stratosphere.nephele.io.channels.ChannelType;
/**
* This class implements a directed edge of between two {@link ManagementGroupVertex} objects. The edge is derived from
* a group edge of the actual execution graph.
*
* This class is not thread-safe.
*
*/
public final class ManagementGroupEdge extends ManagementAttachment {
/**
* The source vertex of this group edge.
*/
private final ManagementGroupVertex source;
/**
* The target vertex of this group edge.
*/
private final ManagementGroupVertex target;
/**
* The edge's index at the source vertex.
*/
private final int sourceIndex;
/**
* The edge's index at the target vertex.
*/
private final int targetIndex;
/**
* The type of the channels represented by this group edge.
*/
private final ChannelType channelType;
/**
* Constructs a new management group edge.
*
* @param source
* the source vertex of the new group edge
* @param sourceIndex
* the index at the source vertex
* @param target
* the target vertex of the new group edge
* @param targetIndex
* the index at the target vertex
* @param channelType
* the type of the channels represented by the new group edge
* @param compressionLevel
* the compression level of the channels represented by the new group edge
*/
public ManagementGroupEdge(final ManagementGroupVertex source, final int sourceIndex,
final ManagementGroupVertex target, final int targetIndex, final ChannelType channelType) {
this.source = source;
this.target = target;
this.sourceIndex = sourceIndex;
this.targetIndex = targetIndex;
this.channelType = channelType;
source.insertForwardEdge(this, sourceIndex);
target.insertBackwardEdge(this, targetIndex);
}
/**
* Returns the type of the channels represented by this group edge.
*
* @return the type of the channels represented by this group edge
*/
public ChannelType getChannelType() {
return this.channelType;
}
/**
* Returns the source vertex of this group edge.
*
* @return the source vertex of this group edge
*/
public ManagementGroupVertex getSource() {
return this.source;
}
/**
* Returns the target vertex of this group edge.
*
* @return the target vertex of this group edge
*/
public ManagementGroupVertex getTarget() {
return this.target;
}
/**
* Returns the edge's index at the source vertex.
*
* @return the edge's index at the source vertex
*/
public int getSourceIndex() {
return this.sourceIndex;
}
/**
* Returns the edge's index at the target vertex.
*
* @return the edges's index at the target vertex
*/
public int getTargetIndex() {
return this.targetIndex;
}
}