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From ravipesala <...@git.apache.org>
Subject [GitHub] carbondata pull request #1489: [CARBONDATA-1576][PREAGG][DATAMAP] Support Da...
Date Mon, 13 Nov 2017 11:36:34 GMT
Github user ravipesala commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/1489#discussion_r150513579
  
    --- Diff: integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/datamap/DataMapListeners.scala
---
    @@ -0,0 +1,71 @@
    +/*
    + * 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.spark.sql.execution.command.datamap
    +
    +import scala.collection.JavaConverters._
    +
    +import org.apache.spark.sql.execution.command.CarbonDropTableCommand
    +
    +import org.apache.carbondata.core.metadata.schema.table.DataMapSchema
    +import org.apache.carbondata.events.{DropDataMapPostEvent, DropTablePostEvent, Event,
OperationContext, OperationEventListener}
    +
    +object DataMapDropTablePostListener extends OperationEventListener {
    +
    +  /**
    +   * Called on a specified event occurrence
    +   *
    +   * @param event
    +   */
    +  override def onEvent(event: Event, operationContext: OperationContext): Unit = {
    +    val dropPostEvent = event.asInstanceOf[DropTablePostEvent]
    +    val carbonTable = dropPostEvent.carbonTable
    +    val sparkSession = dropPostEvent.sparkSession
    +    if (carbonTable.isDefined && carbonTable.get.getTableInfo.getDataMapSchemaList
!= null &&
    +        !carbonTable.get.getTableInfo.getDataMapSchemaList.isEmpty) {
    +      val childSchemas = carbonTable.get.getTableInfo.getDataMapSchemaList
    +      for (childSchema: DataMapSchema <- childSchemas.asScala) {
    +        if (childSchema.getRelationIdentifier != null) {
    +          CarbonDropTableCommand(ifExistsSet = true,
    --- End diff --
    
    ok


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