/*
* Copyright (c) 2007-2014 Concurrent, Inc. All Rights Reserved.
*
* Project and contact information: http://www.cascading.org/
*
* This file is part of the Cascading project.
*
* 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 cascading.flow.iso.graph;
import java.util.Map;
import cascading.flow.iso.NonTap;
import cascading.flow.planner.graph.FlowElementGraph;
import cascading.pipe.Checkpoint;
import cascading.pipe.Merge;
import cascading.pipe.Pipe;
import cascading.tap.Tap;
import cascading.tuple.Fields;
import static cascading.util.Util.createHashMap;
/**
*
*/
public class MulitStepFlowGraph extends FlowElementGraph
{
public MulitStepFlowGraph()
{
Pipe lower = new Pipe( "lower" );
Pipe upper = new Pipe( "upper" );
lower = new Checkpoint( lower );
upper = new Checkpoint( upper );
lower = new Checkpoint( lower );
upper = new Checkpoint( upper );
Pipe sink = new Merge( "sink", lower, upper );
Map<String, Tap> sources = createHashMap();
sources.put( lower.getName(), new NonTap( new Fields( "offset", "line" ) ) );
sources.put( upper.getName(), new NonTap( new Fields( "offset", "line" ) ) );
Map<String, Tap> sinks = createHashMap();
sinks.put( sink.getName(), new NonTap( new Fields( "offset", "line" ) ) );
initialize( sources, sinks, sink );
}
}