| /* |
| * 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 |
| |
| trait LogicalExpr extends Expr { |
| } |
| |
| case class InExpr(head: Expr, is: Boolean, range: Seq[Expr]) extends LogicalExpr { |
| |
| addChildren(head +: range) |
| |
| def desc: String = { |
| val notStr = if (is) "" else " NOT" |
| s"${head.desc}${notStr} IN (${range.map(_.desc).mkString(", ")})" |
| } |
| def coalesceDesc: String = { |
| val notStr = if (is) "" else " NOT" |
| s"${head.coalesceDesc}${notStr} IN (${range.map(_.coalesceDesc).mkString(", ")})" |
| } |
| |
| override def map(func: (Expr) => Expr): InExpr = { |
| InExpr(func(head), is, range.map(func(_))) |
| } |
| } |
| |
| case class BetweenExpr(head: Expr, is: Boolean, range: Seq[Expr]) extends LogicalExpr { |
| |
| range match { |
| case first :: second :: _ => addChildren(head :: first :: second :: Nil) |
| case _ => throw new Exception("between expression exception: range less than 2") |
| } |
| |
| def desc: String = { |
| val notStr = if (is) "" else " NOT" |
| val rangeStr = range match { |
| case first :: second :: _ => s"${first.desc} AND ${second.desc}" |
| case _ => throw new Exception("between expression exception: range less than 2") |
| } |
| s"${head.desc}${notStr} BETWEEN ${rangeStr}" |
| } |
| def coalesceDesc: String = { |
| val notStr = if (is) "" else " NOT" |
| val rangeStr = range match { |
| case first :: second :: _ => s"${first.coalesceDesc} AND ${second.coalesceDesc}" |
| case _ => throw new Exception("between expression exception: range less than 2") |
| } |
| s"${head.coalesceDesc}${notStr} BETWEEN ${rangeStr}" |
| } |
| |
| override def map(func: (Expr) => Expr): BetweenExpr = { |
| BetweenExpr(func(head), is, range.map(func(_))) |
| } |
| } |
| |
| case class LikeExpr(head: Expr, is: Boolean, value: Expr) extends LogicalExpr { |
| |
| addChildren(head :: value :: Nil) |
| |
| def desc: String = { |
| val notStr = if (is) "" else " NOT" |
| s"${head.desc}${notStr} LIKE ${value.desc}" |
| } |
| def coalesceDesc: String = { |
| val notStr = if (is) "" else " NOT" |
| s"${head.coalesceDesc}${notStr} LIKE ${value.coalesceDesc}" |
| } |
| |
| override def map(func: (Expr) => Expr): LikeExpr = { |
| LikeExpr(func(head), is, func(value)) |
| } |
| } |
| |
| case class RLikeExpr(head: Expr, is: Boolean, value: Expr) extends LogicalExpr { |
| |
| addChildren(head :: value :: Nil) |
| |
| def desc: String = { |
| val notStr = if (is) "" else " NOT" |
| s"${head.desc}${notStr} RLIKE ${value.desc}" |
| } |
| def coalesceDesc: String = { |
| val notStr = if (is) "" else " NOT" |
| s"${head.coalesceDesc}${notStr} RLIKE ${value.coalesceDesc}" |
| } |
| |
| override def map(func: (Expr) => Expr): RLikeExpr = { |
| RLikeExpr(func(head), is, func(value)) |
| } |
| } |
| |
| |
| case class IsNullExpr(head: Expr, is: Boolean) extends LogicalExpr { |
| |
| addChild(head) |
| |
| def desc: String = { |
| val notStr = if (is) "" else " NOT" |
| s"${head.desc} IS${notStr} NULL" |
| } |
| def coalesceDesc: String = desc |
| |
| override def map(func: (Expr) => Expr): IsNullExpr = { |
| IsNullExpr(func(head), is) |
| } |
| } |
| |
| case class IsNanExpr(head: Expr, is: Boolean) extends LogicalExpr { |
| |
| addChild(head) |
| |
| def desc: String = { |
| val notStr = if (is) "" else "NOT " |
| s"${notStr}isnan(${head.desc})" |
| } |
| def coalesceDesc: String = desc |
| |
| override def map(func: (Expr) => Expr): IsNanExpr = { |
| IsNanExpr(func(head), is) |
| } |
| } |
| |
| // ----------- |
| |
| case class LogicalFactorExpr(factor: Expr, withBracket: Boolean, aliasOpt: Option[String] |
| ) extends LogicalExpr with AliasableExpr { |
| |
| addChild(factor) |
| |
| def desc: String = if (withBracket) s"(${factor.desc})" else factor.desc |
| def coalesceDesc: String = factor.coalesceDesc |
| def alias: Option[String] = aliasOpt |
| override def extractSelf: Expr = { |
| if (aliasOpt.nonEmpty) this |
| else factor.extractSelf |
| } |
| |
| override def map(func: (Expr) => Expr): LogicalFactorExpr = { |
| LogicalFactorExpr(func(factor), withBracket, aliasOpt) |
| } |
| } |
| |
| case class UnaryLogicalExpr(oprs: Seq[String], factor: LogicalExpr) extends LogicalExpr { |
| |
| addChild(factor) |
| |
| def desc: String = { |
| oprs.foldRight(factor.desc) { (opr, fac) => |
| s"(${trans(opr)} ${fac})" |
| } |
| } |
| def coalesceDesc: String = { |
| oprs.foldRight(factor.coalesceDesc) { (opr, fac) => |
| s"(${trans(opr)} ${fac})" |
| } |
| } |
| private def trans(s: String): String = { |
| s match { |
| case "!" => "NOT" |
| case _ => s.toUpperCase |
| } |
| } |
| override def extractSelf: Expr = { |
| if (oprs.nonEmpty) this |
| else factor.extractSelf |
| } |
| |
| override def map(func: (Expr) => Expr): UnaryLogicalExpr = { |
| UnaryLogicalExpr(oprs, func(factor).asInstanceOf[LogicalExpr]) |
| } |
| } |
| |
| case class BinaryLogicalExpr(factor: LogicalExpr, tails: Seq[(String, LogicalExpr)]) |
| extends LogicalExpr { |
| |
| addChildren(factor +: tails.map(_._2)) |
| |
| def desc: String = { |
| val res = tails.foldLeft(factor.desc) { (fac, tail) => |
| val (opr, expr) = tail |
| s"${fac} ${trans(opr)} ${expr.desc}" |
| } |
| if (tails.size <= 0) res else s"${res}" |
| } |
| def coalesceDesc: String = { |
| val res = tails.foldLeft(factor.coalesceDesc) { (fac, tail) => |
| val (opr, expr) = tail |
| s"${fac} ${trans(opr)} ${expr.coalesceDesc}" |
| } |
| if (tails.size <= 0) res else s"${res}" |
| } |
| private def trans(s: String): String = { |
| s match { |
| case "&&" => "AND" |
| case "||" => "OR" |
| case _ => s.trim.toUpperCase |
| } |
| } |
| override def extractSelf: Expr = { |
| if (tails.nonEmpty) this |
| else factor.extractSelf |
| } |
| |
| override def map(func: (Expr) => Expr): BinaryLogicalExpr = { |
| BinaryLogicalExpr(func(factor).asInstanceOf[LogicalExpr], tails.map{ pair => |
| (pair._1, func(pair._2).asInstanceOf[LogicalExpr]) |
| }) |
| } |
| } |