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From ramkrish86 <...@git.apache.org>
Subject [GitHub] flink pull request #3149: FLINK-2168 Add HBaseTableSource
Date Thu, 26 Jan 2017 05:45:18 GMT
Github user ramkrish86 commented on a diff in the pull request:

    https://github.com/apache/flink/pull/3149#discussion_r97934446
  
    --- Diff: flink-connectors/flink-hbase/src/main/java/org/apache/flink/addons/hbase/HBaseTableSchema.java
---
    @@ -0,0 +1,137 @@
    +/*
    + * 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.addons.hbase;
    +
    +import org.apache.flink.api.common.typeinfo.TypeInformation;
    +import org.apache.flink.api.java.typeutils.TypeExtractor;
    +import org.apache.flink.util.Preconditions;
    +import org.apache.hadoop.hbase.util.Bytes;
    +import org.apache.hadoop.hbase.util.Pair;
    +
    +import java.io.Serializable;
    +import java.math.BigDecimal;
    +import java.math.BigInteger;
    +import java.util.List;
    +import java.util.Map;
    +import java.util.HashMap;
    +import java.util.ArrayList;
    +import java.util.Date;
    +
    +/**
    + * Helps to specify an HBase Table's schema
    + */
    +public class HBaseTableSchema implements Serializable {
    +
    +	// A Map with key as column family.
    +	private final Map<String, List<Pair<String, TypeInformation<?>>>>
familyMap =
    +		new HashMap<String, List<Pair<String, TypeInformation<?>>>>();
    +
    +	// Allowed types. This may change.
    +	// TODO : Check if the Date type should be the one in java.util or the one in java.sql
    +	private static Class[] CLASS_TYPES = {
    +		Integer.class, Short.class, Float.class, Long.class, String.class, Byte.class, Boolean.class,
Double.class, BigInteger.class, BigDecimal.class, Date.class, byte[].class
    +	};
    +	/**
    +	 * Allows specifying the family and qualifier name along with the data type of the qualifier
for an HBase table
    +	 *
    +	 * @param family    the family name
    +	 * @param qualifier the qualifier name
    +	 * @param clazz     the data type of the qualifier
    +	 */
    +	public void addColumn(String family, String qualifier, Class<?> clazz) {
    +		Preconditions.checkNotNull(family, "family name");
    +		Preconditions.checkNotNull(family, "qualifier name");
    --- End diff --
    
    Good catch.


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