| /* |
| * 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.griffin.measure.step.builder.dsl.expr |
| |
| case class FunctionExpr(functionName: String, args: Seq[Expr], |
| extraConditionOpt: Option[ExtraConditionExpr], |
| aliasOpt: Option[String] |
| ) extends Expr with AliasableExpr { |
| |
| addChildren(args) |
| |
| def desc: String = { |
| extraConditionOpt match { |
| case Some(cdtn) => s"${functionName}(${cdtn.desc} ${args.map(_.desc).mkString(", ")})" |
| case _ => s"${functionName}(${args.map(_.desc).mkString(", ")})" |
| } |
| } |
| def coalesceDesc: String = desc |
| def alias: Option[String] = { |
| if (aliasOpt.isEmpty) { |
| Some(functionName) |
| } else aliasOpt |
| } |
| |
| override def map(func: (Expr) => Expr): FunctionExpr = { |
| FunctionExpr(functionName, args.map(func(_)), |
| extraConditionOpt.map(func(_).asInstanceOf[ExtraConditionExpr]), aliasOpt) |
| } |
| } |