com.stratio.crossdata.driver.querybuilder.dslentities.identifiers.scala Maven / Gradle / Ivy

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Stratio Crossdata Driver

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/**
 * Copyright (C) 2015 Stratio (http://stratio.com)
 *
 * Licensed 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 com.stratio.crossdata.driver.querybuilder.dslentities

import com.stratio.crossdata.driver.querybuilder.{CrossdataSQLStatement, Expression, Relation}

sealed trait Identifier extends Expression with Relation

/**
 * Identifier for tables and columns
 */
case class EntityIdentifier(id: String) extends Identifier {
  override private[querybuilder] def toXDQL: String = id
}

case class AliasIdentifier(underlyingEntity: CrossdataSQLStatement, alias: String) extends Identifier {
  override private[querybuilder] def toXDQL: String = s" ${underlyingEntity.toXDQL} AS $alias"
}