forked from neo4j/neo4j
/
Collection.scala
43 lines (35 loc) · 1.53 KB
/
Collection.scala
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/**
* Copyright (c) 2002-2013 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.cypher.internal.commands.expressions
import org.neo4j.cypher.internal.symbols._
import org.neo4j.cypher.internal.ExecutionContext
case class Collection(children: Expression*) extends Expression {
def apply(ctx: ExecutionContext): Any = children.map(e => e(ctx))
def rewrite(f: (Expression) => Expression): Expression = f(Collection(children.map(f): _*))
def calculateType(symbols: SymbolTable): CypherType = {
children.map(_.getType(symbols)) match {
case Seq() => AnyCollectionType()
case types =>
val innerType = types.foldLeft(AnyType().asInstanceOf[CypherType])(_ mergeWith _)
new CollectionType( innerType )
}
}
def symbolTableDependencies = children.flatMap(_.symbolTableDependencies).toSet
}