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From sandeepdeshmukh <...@git.apache.org>
Subject [GitHub] incubator-apex-malhar pull request: APEXMALHAR-1953 Updated Jdbc O...
Date Mon, 28 Mar 2016 06:35:39 GMT
Github user sandeepdeshmukh commented on a diff in the pull request:

    https://github.com/apache/incubator-apex-malhar/pull/215#discussion_r57548518
  
    --- Diff: library/src/main/java/com/datatorrent/lib/db/jdbc/JdbcPOJOInsertOutputOperator.java
---
    @@ -0,0 +1,182 @@
    +/**
    + * 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 com.datatorrent.lib.db.jdbc;
    +
    +import java.lang.reflect.Field;
    +import java.sql.ResultSet;
    +import java.sql.ResultSetMetaData;
    +import java.sql.SQLException;
    +import java.sql.Statement;
    +import java.util.List;
    +
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +
    +import com.google.common.collect.Lists;
    +
    +import com.datatorrent.api.Context.OperatorContext;
    +import com.datatorrent.lib.util.FieldInfo;
    +
    +/**
    + * <p>
    + * JdbcPOJOInsertOutputOperator class.</p>
    + * An implementation of AbstractJdbcTransactionableOutputOperator which takes in any
POJO.
    + *
    + * @displayName Jdbc Output Operator
    + * @category Output
    + * @tags database, sql, pojo, jdbc
    + * @since 2.1.0
    + */
    +@org.apache.hadoop.classification.InterfaceStability.Evolving
    +public class JdbcPOJOInsertOutputOperator extends AbstractJdbcPOJOOutputOperator
    +{
    +  String insertStatement;
    +  List<String> columnNames;
    +  List<Integer> columnNullabilities;
    +  String columnString;
    +  String valueString;
    +
    +  @Override
    +  public void setup(OperatorContext context)
    +  {
    +    super.setup(context);
    +
    +    // Populate columnNames and columnDataTypes
    +    try {
    +      if (getFieldInfos() == null) { // then assume direct mapping
    +        LOG.info("Assuming direct mapping between POJO fields and DB columns");
    --- End diff --
    
    Improve the log message to include explicit message about missing field info.


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