| /* |
| * 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.common.util |
| |
| import org.apache.spark.sql.catalyst.expressions._ |
| import org.apache.spark.sql.catalyst.plans.logical.{Filter, LogicalPlan, OneRowRelation} |
| import org.apache.spark.sql.catalyst.util._ |
| |
| /** |
| * Provides helper methods for comparing plans. |
| */ |
| class PlanTest extends CarbonFunSuite { |
| |
| /** Fails the test if the two expressions do not match */ |
| protected def compareExpressions(e1: Expression, e2: Expression): Unit = { |
| comparePlans(Filter(e1, OneRowRelation.apply()), Filter(e2, OneRowRelation.apply())) |
| } |
| |
| /** Fails the test if the two plans do not match */ |
| protected def comparePlans(plan1: LogicalPlan, plan2: LogicalPlan) { |
| val normalized1 = normalizeExprIds(plan1) |
| val normalized2 = normalizeExprIds(plan2) |
| if (normalized1 != normalized2) { |
| fail( |
| s""" |
| |== FAIL: Plans do not match === |
| |${sideBySide(normalized1.treeString, normalized2.treeString).mkString("\n")} |
| """.stripMargin) |
| } |
| } |
| |
| /** |
| * Since attribute references are given globally unique ids during analysis, |
| * we must normalize them to check if two different queries are identical. |
| */ |
| protected def normalizeExprIds(plan: LogicalPlan) = { |
| plan transformAllExpressions { |
| case a: AttributeReference => |
| AttributeReference(a.name, a.dataType, a.nullable)(exprId = ExprId(0)) |
| case a: Alias => |
| Alias(a.child, a.name)(exprId = ExprId(0)) |
| } |
| } |
| } |