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/*
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* Copyright 2010 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package in.shop2020.web.mappers;
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import java.util.logging.Logger;
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import org.apache.hadoop.io.NullWritable;
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import com.google.appengine.api.datastore.Entity;
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import com.google.appengine.api.datastore.Key;
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import com.google.appengine.tools.mapreduce.AppEngineMapper;
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/**
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* A sample AppEngine mapper.
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*
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* @author frew@google.com (Fred Wulff)
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*/
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public class TestMapper extends
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AppEngineMapper<Key, Entity, NullWritable, NullWritable> {
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private static final Logger log = Logger.getLogger(TestMapper.class
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.getName());
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public TestMapper() {
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}
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@Override
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public void taskSetup(Context context) {
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log.warning("Doing per-task setup");
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}
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@Override
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public void taskCleanup(Context context) {
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log.warning("Doing per-task cleanup");
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}
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@Override
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public void setup(Context context) {
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log.warning("Doing per-worker setup");
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}
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@Override
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public void cleanup(Context context) {
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log.warning("Doing per-worker cleanup");
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}
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// This is a silly mapper that's intended to show some of the capabilities
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// of the API.
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@Override
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public void map(Key key, Entity value, Context context) {
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log.warning("Mapping key: " + key);
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context.getCounter("event", "count").increment(1);
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if (value.hasProperty("eventType") && value.getProperty("eventType")!=null) {
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context.getCounter("eventType", value.getProperty("eventType").toString()).increment(1);
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}
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}
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}
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