| /* |
| * 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 |
| * under the License. |
| */ |
| |
| package org.apache.datasketches.pig.hll; |
| |
| import static org.apache.datasketches.pig.hll.DataToSketch.DEFAULT_HLL_TYPE; |
| import static org.apache.datasketches.pig.hll.DataToSketch.DEFAULT_LG_K; |
| |
| import org.apache.datasketches.hll.TgtHllType; |
| import org.apache.datasketches.hll.Union; |
| import org.apache.pig.backend.executionengine.ExecException; |
| import org.apache.pig.data.DataBag; |
| |
| @SuppressWarnings("javadoc") |
| 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); |
| } |
| |
| } |