eu.stratosphere.api.java.DeltaIterationResultSet Maven / Gradle / Ivy

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/***********************************************************************************************************************
 *
 * 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.api.java;

import eu.stratosphere.api.java.operators.Keys;
import eu.stratosphere.types.TypeInformation;

public class DeltaIterationResultSet extends DataSet {

	private DeltaIteration iterationHead;

	private DataSet nextSolutionSet;
	
	private DataSet nextWorkset;
	
	private Keys keys;
	
	private int maxIterations;
	
	private TypeInformation typeWS;

	DeltaIterationResultSet(ExecutionEnvironment context,
							TypeInformation typeSS,
							TypeInformation typeWS,
							DeltaIteration iterationHead,
							DataSet nextSolutionSet,
							DataSet nextWorkset,
							Keys keys,
							int maxIterations)
	{
		super(context, typeSS);
		this.iterationHead = iterationHead;
		this.nextWorkset = nextWorkset;
		this.nextSolutionSet = nextSolutionSet;
		this.keys = keys;
		this.maxIterations = maxIterations;
		this.typeWS = typeWS;
	}

	public DeltaIteration getIterationHead() {
		return iterationHead;
	}
	
	public DataSet getNextSolutionSet() {
		return nextSolutionSet;
	}

	public DataSet getNextWorkset() {
		return nextWorkset;
	}
	
	public int [] getKeyPositions() {
		return keys.computeLogicalKeyPositions();
	}
	
	public int getMaxIterations() {
		return maxIterations;
	}
	
	public TypeInformation getWorksetType() {
		return typeWS;
	}
}