com.yahoo.sketches.pig.hll.DataToSketchAlgebraicIntermediate Maven / Gradle / Ivy
/*
* Copyright 2017, Yahoo! Inc.
* Licensed under the terms of the Apache License 2.0. See LICENSE file at the project root for terms.
*/
package com.yahoo.sketches.pig.hll;
import static com.yahoo.sketches.pig.hll.DataToSketch.DEFAULT_HLL_TYPE;
import static com.yahoo.sketches.pig.hll.DataToSketch.DEFAULT_LG_K;
import org.apache.pig.backend.executionengine.ExecException;
import org.apache.pig.data.DataBag;
import com.yahoo.sketches.hll.TgtHllType;
import com.yahoo.sketches.hll.Union;
public class DataToSketchAlgebraicIntermediate extends AlgebraicIntermediate {
/**
* Default constructor for the intermediate pass of an Algebraic function.
* Assumes default lgK and target HLL type.
*/
public DataToSketchAlgebraicIntermediate() {
super(DEFAULT_LG_K, DEFAULT_HLL_TYPE);
}
/**
* Constructor for the intermediate pass of an Algebraic function. Pig will call
* this and pass the same constructor arguments as the base UDF.
* Assumes default HLL target type.
*
* @param lgK in a form of a String
*/
public DataToSketchAlgebraicIntermediate(final String lgK) {
super(Integer.parseInt(lgK), DEFAULT_HLL_TYPE);
}
/**
* Constructor for the intermediate pass of an Algebraic function. Pig will call
* this and pass the same constructor arguments as the base UDF.
*
* @param lgK parameter controlling the sketch size and accuracy
* @param tgtHllType HLL type of the resulting sketch
*/
public DataToSketchAlgebraicIntermediate(final String lgK, final String tgtHllType) {
super(Integer.parseInt(lgK), TgtHllType.valueOf(tgtHllType));
}
@Override
void updateUnion(final DataBag bag, final Union union) throws ExecException {
DataToSketch.updateUnion(bag, union);
}
}