Github user delding commented on a diff in the pull request: https://github.com/apache/flink/pull/2332#discussion_r74886606 --- Diff: flink-streaming-connectors/flink-connector-hbase/src/main/java/org/apache/flink/streaming/connectors/hbase/MutationActionList.java --- @@ -0,0 +1,371 @@ +/* + * 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.flink.streaming.connectors.hbase; + +import org.apache.flink.util.Preconditions; +import org.apache.hadoop.hbase.client.Append; +import org.apache.hadoop.hbase.client.Delete; +import org.apache.hadoop.hbase.client.Durability; +import org.apache.hadoop.hbase.client.Increment; +import org.apache.hadoop.hbase.client.Mutation; +import org.apache.hadoop.hbase.client.Put; + +import java.util.ArrayList; +import java.util.List; + +/** + * This class represents a list of {@link MutationAction}s you will take when writing + * an input value of {@link HBaseSink} to a row in a HBase table. + * Each {@link MutationAction} can create an HBase {@link Mutation} operation type + * including {@link Put}, {@link Increment}, {@link Append} and {@link Delete}. + */ +public class MutationActionList { + private final List<MutationAction> actions; + + public MutationActionList() { + this.actions = new ArrayList<>(); + } + + public List<MutationAction> getActions() { + return this.actions; + } + + /** + * Create a new list of HBase {@link Mutation}s. + * + * @param rowKey row that the created {@link Mutation} list is applied to + * @param writeToWAL enable WAL + * @return a list of HBase {@link Mutation}s + */ + public List<Mutation> newMutationList(byte[] rowKey, boolean writeToWAL) { + List<Mutation> mutations = new ArrayList<>(); + Put put = null; + Increment increment = null; + Append append = null; + Delete delete = null; + boolean rowIsDeleted = false; + for (MutationAction action : actions) { + switch (action.getType()) { + case PUT: + if (put == null) { + put = new Put(rowKey); + mutations.add(put); + } + if (action.getTs() == -1) { + put.addColumn(action.getFamily(), action.getQualifier(), action.getValue()); + } else { + put.addColumn(action.getFamily(), action.getQualifier(), action.getTs(), action.getValue()); + } + break; + + case INCREMENT: + if (increment == null) { + increment = new Increment(rowKey); + mutations.add(increment); + } + increment.addColumn(action.getFamily(), action.getQualifier(), action.getIncrement()); + break; + + case APPEND: + if (append == null) { + append = new Append(rowKey); + mutations.add(append); + } + append.add(action.getFamily(), action.getQualifier(), action.getValue()); + break; + + // If there are multiple DELETE_ROW actions, only the first one is served + case DELETE_ROW: + if (!rowIsDeleted) { + for (int i = 0; i < mutations.size(); ) { + if (mutations.get(i) instanceof Delete) { + mutations.remove(i); + } else { + i++; + } + } + delete = new Delete(rowKey, action.getTs()); + mutations.add(delete); + rowIsDeleted = true; + } + break; + + case DELETE_FAMILY: + if (!rowIsDeleted) { + if (delete == null) { + delete = new Delete(rowKey); + mutations.add(delete); + } + delete.addFamily(action.getFamily(), action.getTs()); + } + break; + + case DELETE_COLUMNS: + if (!rowIsDeleted) { + if (delete == null) { + delete = new Delete(rowKey); + mutations.add(delete); + } + delete.addColumns(action.getFamily(), action.getQualifier(), action.getTs()); + } + break; + + case DELETE_COLUMN: + if (!rowIsDeleted) { --- End diff -- I would be more than happy not to handle combination of Deletes :-). Will update.
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