org.squeryl.dsl.ast.QueryExpressionElements.scala Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2010 Maxime Lévesque
*
* 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 org.squeryl.dsl.ast
trait QueryExpressionElements extends ExpressionNode {
var inhibitAliasOnSelectElementReference = false
def isChild(q: QueryableExpressionNode): Boolean
def alias: String
def selectDistinct: Boolean
def isForUpdate: Boolean
def page: Option[(Int,Int)]
def unionIsForUpdate: Boolean
def unionPage: Option[(Int, Int)]
def views: Iterable[QueryableExpressionNode]
def isJoinForm: Boolean
def subQueries: Iterable[QueryableExpressionNode]
def tableExpressions: Iterable[QueryableExpressionNode]
def selectList: Iterable[SelectElement]
def whereClause: Option[ExpressionNode]
def hasUnInhibitedWhereClause =
whereClause match {
case None => false
case Some(e:ExpressionNode) =>
if (e.inhibited) false
else if (e.children.isEmpty) true // for constant
else (e.children.exists(! _.inhibited))
}
def havingClause: Option[ExpressionNode]
def groupByClause: Iterable[ExpressionNode]
def orderByClause: Iterable[ExpressionNode]
def commonTableExpressions: Iterable[QueryExpressionElements]
}