| /* |
| * 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.catalyst.catalog |
| |
| import com.google.common.base.Objects |
| import org.apache.spark.sql.catalyst.analysis.MultiInstanceRelation |
| import org.apache.spark.sql.catalyst.expressions.AttributeReference |
| import org.apache.spark.sql.catalyst.plans.logical.{LeafNode, LogicalPlan, Statistics} |
| import org.apache.spark.sql.internal.SQLConf |
| |
| /** |
| * A `LogicalPlan` that represents a hive table. |
| * |
| * TODO: remove this after we completely make hive as a data source. |
| */ |
| case class HiveTableRelation( |
| tableMeta: CatalogTable, |
| dataCols: Seq[AttributeReference], |
| partitionCols: Seq[AttributeReference]) extends LeafNode with MultiInstanceRelation { |
| assert(tableMeta.identifier.database.isDefined) |
| assert(tableMeta.partitionSchema.sameType(partitionCols.toStructType)) |
| assert(tableMeta.schema.sameType(dataCols.toStructType)) |
| |
| // The partition column should always appear after data columns. |
| override def output: Seq[AttributeReference] = dataCols ++ partitionCols |
| |
| def isPartitioned: Boolean = partitionCols.nonEmpty |
| |
| override def equals(relation: Any): Boolean = relation match { |
| case other: HiveTableRelation => tableMeta == other.tableMeta && output == other.output |
| case _ => false |
| } |
| |
| override def hashCode(): Int = { |
| Objects.hashCode(tableMeta.identifier, output) |
| } |
| |
| override def newInstance(): HiveTableRelation = copy( |
| dataCols = dataCols.map(_.newInstance()), |
| partitionCols = partitionCols.map(_.newInstance())) |
| } |