| /** |
| * 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.hcatalog.pig; |
| |
| import java.io.IOException; |
| import java.util.Properties; |
| |
| import org.apache.hadoop.mapreduce.Job; |
| import org.apache.hcatalog.common.HCatConstants; |
| import org.apache.pig.impl.util.UDFContext; |
| |
| /** |
| * This class is used to test the HCAT_PIG_STORER_EXTERNAL_LOCATION property used in HCatStorer. |
| * When this property is set, HCatStorer writes the output to the location it specifies. Since |
| * the property can only be set in the UDFContext, we need this simpler wrapper to do three things: |
| * <ol> |
| * <li> save the external dir specified in the Pig script </li> |
| * <li> set the same UDFContext signature as HCatStorer </li> |
| * <li> before {@link HCatStorer#setStoreLocation(String, Job)}, set the external dir in the UDFContext.</li> |
| * </ol> |
| */ |
| public class HCatStorerWrapper extends HCatStorer { |
| |
| private String sign; |
| private String externalDir; |
| |
| public HCatStorerWrapper(String partSpecs, String schema, String externalDir) throws Exception { |
| super(partSpecs, schema); |
| this.externalDir = externalDir; |
| } |
| |
| public HCatStorerWrapper(String partSpecs, String externalDir) throws Exception { |
| super(partSpecs); |
| this.externalDir = externalDir; |
| } |
| |
| public HCatStorerWrapper(String externalDir) throws Exception{ |
| super(); |
| this.externalDir = externalDir; |
| } |
| |
| @Override |
| public void setStoreLocation(String location, Job job) throws IOException { |
| Properties udfProps = UDFContext.getUDFContext().getUDFProperties( |
| this.getClass(), new String[] { sign }); |
| udfProps.setProperty(HCatConstants.HCAT_PIG_STORER_EXTERNAL_LOCATION, externalDir); |
| super.setStoreLocation(location, job); |
| } |
| |
| @Override |
| public void setStoreFuncUDFContextSignature(String signature) { |
| sign = signature; |
| super.setStoreFuncUDFContextSignature(signature); |
| } |
| } |