carp84 commented on a change in pull request #8930: [FLINK-12955] HBase LookupableTableSource URL: https://github.com/apache/flink/pull/8930#discussion_r298980205
########## File path: flink-connectors/flink-hbase/src/main/java/org/apache/flink/connectors/hbase/table/HBaseLookupFunction.java ########## @@ -0,0 +1,201 @@ +/* + * 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.connectors.hbase.table; + +import org.apache.flink.api.common.typeinfo.TypeInformation; +import org.apache.flink.api.java.tuple.Tuple3; +import org.apache.flink.connectors.hbase.util.HBaseBytesSerializer; +import org.apache.flink.connectors.hbase.util.HBaseConfigurationUtil; +import org.apache.flink.connectors.hbase.util.HBaseTypeUtils; +import org.apache.flink.table.functions.FunctionContext; +import org.apache.flink.table.functions.TableFunction; +import org.apache.flink.types.Row; +import org.apache.flink.util.StringUtils; + +import org.apache.hadoop.hbase.HBaseConfiguration; +import org.apache.hadoop.hbase.HConstants; +import org.apache.hadoop.hbase.TableName; +import org.apache.hadoop.hbase.TableNotFoundException; +import org.apache.hadoop.hbase.client.Connection; +import org.apache.hadoop.hbase.client.ConnectionFactory; +import org.apache.hadoop.hbase.client.Get; +import org.apache.hadoop.hbase.client.HTable; +import org.apache.hadoop.hbase.client.Result; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.io.UnsupportedEncodingException; +import java.util.ArrayList; +import java.util.List; + +/** + * The HBaseLookupFunction is a standard user-defined table function, it can be used in tableAPI + * and also useful for temporal table join plan in SQL. + */ +public class HBaseLookupFunction extends TableFunction<Row> { + private static final Logger LOG = LoggerFactory.getLogger(HBaseLookupFunction.class); + private static final long serialVersionUID = 3831805737117914558L; + /** + * rowkey field index in source input row. + */ + private final int rowKeySourceIndex; + /** + * qualifier fields' indexes in source input row. + */ + private final List<Integer> qualifierSourceIndexes; + private final String hTableName; + private final List<Tuple3<byte[], byte[], TypeInformation<?>>> qualifierList; + /** + * field serializer for HBase format, order by field index of input row. + */ + private List<HBaseBytesSerializer> inputFieldSerializers; + private int rowKeyInternalTypeIndex; + private final int totalQualifiers; + private String charset; Review comment: Only used in constructor, could be converted to a local variable. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
