src/main/java/org/apache/sysds/runtime/functionobjects/IndexFunction.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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package org.apache.sysds.runtime.functionobjects;

import org.apache.sysds.runtime.matrix.data.MatrixIndexes;
import org.apache.sysds.runtime.matrix.data.MatrixValue.CellIndex;
import org.apache.sysds.runtime.meta.DataCharacteristics;

import java.io.Serializable;

public abstract class IndexFunction extends FunctionObject implements Serializable 
{
	private static final long serialVersionUID = -7672111359444767237L;
	
	//compute output indexes
	
	public abstract void execute(MatrixIndexes in, MatrixIndexes out);
	
	public abstract void execute(CellIndex in, CellIndex out);
	
	//determine of dimension has been reduced
	public abstract boolean computeDimension(int row, int col, CellIndex retDim);

	//compute output dimensions
	public abstract boolean computeDimension(DataCharacteristics in, DataCharacteristics out);
}