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ASF GitHub Bot commented on APEXMALHAR-1701: -------------------------------------------- Github user bhupeshchawda commented on a diff in the pull request: https://github.com/apache/apex-malhar/pull/335#discussion_r73115095 --- Diff: library/src/main/java/org/apache/apex/malhar/lib/dedup/DeduperTimeBasedPOJOImpl.java --- @@ -0,0 +1,209 @@ +/** + * 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.apex.malhar.lib.dedup; + +import javax.validation.constraints.NotNull; + +import org.joda.time.Duration; +import org.joda.time.Instant; + +import org.apache.apex.malhar.lib.state.managed.TimeBucketAssigner; +import org.apache.hadoop.classification.InterfaceStability.Evolving; + +import com.datatorrent.api.Context; +import com.datatorrent.api.Context.OperatorContext; +import com.datatorrent.api.Context.PortContext; +import com.datatorrent.api.DefaultInputPort; +import com.datatorrent.api.Operator.ActivationListener; +import com.datatorrent.api.StreamCodec; +import com.datatorrent.api.annotation.InputPortFieldAnnotation; +import com.datatorrent.lib.util.PojoUtils; +import com.datatorrent.lib.util.PojoUtils.Getter; +import com.datatorrent.netlet.util.Slice; + +@Evolving +public class DeduperTimeBasedPOJOImpl extends AbstractDeduper<Object> implements ActivationListener<Context> +{ + + // Required properties + @NotNull + private String keyExpression; + + private String timeExpression; + + @NotNull + private long bucketSpan; + + @NotNull + private long expireBefore; + + // Optional + private long referenceInstant = -1; + + private transient Class<?> pojoClass; + + private transient Getter<Object, Long> timeGetter; + + private transient Getter<Object, Object> keyGetter; + + @InputPortFieldAnnotation(schemaRequired = true) + public final transient DefaultInputPort<Object> input = new DefaultInputPort<Object>() + { + @Override + public void setup(PortContext context) + { + pojoClass = context.getAttributes().get(PortContext.TUPLE_CLASS); + } + + @Override + public void process(Object tuple) + { + processTuple(tuple); + } + + @Override + public StreamCodec<Object> getStreamCodec() + { + return getDeduperStreamCodec(); + } + }; + + @Override + protected long getTime(Object tuple) + { + if (timeGetter != null) { + return timeGetter.get(tuple); + } + return System.currentTimeMillis(); + } + + @Override + protected Slice getKey(Object tuple) + { + Object key = keyGetter.get(tuple); + return new Slice(key.toString().getBytes()); + } + + protected StreamCodec<Object> getDeduperStreamCodec() + { + return new DeduperStreamCodec(keyExpression); + } + + @Override + public void setup(OperatorContext context) + { + TimeBucketAssigner timeBucketAssigner = new TimeBucketAssigner(); + timeBucketAssigner.setBucketSpan(Duration.standardSeconds(bucketSpan)); + timeBucketAssigner.setExpireBefore(Duration.standardSeconds(expireBefore)); + if (referenceInstant == -1) { + timeBucketAssigner.setReferenceInstant(new Instant()); --- End diff -- Have set the default in the declaration. Will remove the if statement. > Deduper : create a deduper backed by Managed State > -------------------------------------------------- > > Key: APEXMALHAR-1701 > URL: https://issues.apache.org/jira/browse/APEXMALHAR-1701 > Project: Apache Apex Malhar > Issue Type: Task > Components: algorithms > Reporter: Chandni Singh > Assignee: Chandni Singh > > Need a de-deduplicator operator that is based on Managed State. -- This message was sent by Atlassian JIRA (v6.3.4#6332)