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ProcedureCallPipeTest.scala
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ProcedureCallPipeTest.scala
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/*
* Copyright (c) 2002-2017 "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.compiler.v3_2.pipes
import org.neo4j.cypher.internal.compiler.v3_2.ExecutionContext
import org.neo4j.cypher.internal.compiler.v3_2.commands.expressions.Variable
import org.neo4j.cypher.internal.compiler.v3_2.executionplan.{EagerReadWriteCallMode, LazyReadOnlyCallMode}
import org.neo4j.cypher.internal.compiler.v3_2.spi._
import org.neo4j.cypher.internal.frontend.v3_2.ast.AstConstructionTestSupport
import org.neo4j.cypher.internal.frontend.v3_2.symbols._
import org.neo4j.cypher.internal.frontend.v3_2.test_helpers.CypherFunSuite
class ProcedureCallPipeTest
extends CypherFunSuite
with PipeTestSupport
with AstConstructionTestSupport {
val procedureName = QualifiedName(List.empty, "foo")
val emptyStringArray = Array.empty[String]
test("should execute read-only procedure calls") {
val lhsData = List(Map("a" -> 1), Map("a" -> 2))
val lhs = new FakePipe(lhsData.iterator, "a" -> CTNumber)
val pipe = ProcedureCallPipe(
source = lhs,
name = procedureName,
callMode = LazyReadOnlyCallMode(emptyStringArray),
argExprs = Seq(Variable("a")),
rowProcessing = FlatMapAndAppendToRow,
resultSymbols = Seq("r" -> CTString),
resultIndices = Seq(0 -> "r")
)()(newMonitor)
val qtx = new FakeQueryContext(procedureName, resultsTransformer, ProcedureReadOnlyAccess(emptyStringArray))
pipe.createResults(QueryStateHelper.emptyWith(qtx)).toList should equal(List(
ExecutionContext.from("a" ->1, "r" -> "take 1/1"),
ExecutionContext.from("a" ->2, "r" -> "take 1/2"),
ExecutionContext.from("a" ->2, "r" -> "take 2/2")
))
}
test("should execute read-write procedure calls") {
val lhsData = List(Map("a" -> 1), Map("a" -> 2))
val lhs = new FakePipe(lhsData.iterator, "a" -> CTNumber)
val pipe = ProcedureCallPipe(
source = lhs,
name = procedureName,
callMode = EagerReadWriteCallMode(emptyStringArray),
argExprs = Seq(Variable("a")),
rowProcessing = FlatMapAndAppendToRow,
resultSymbols = Seq("r" -> CTString),
resultIndices = Seq(0 -> "r")
)()(newMonitor)
val qtx = new FakeQueryContext(procedureName, resultsTransformer, ProcedureReadWriteAccess(emptyStringArray))
pipe.createResults(QueryStateHelper.emptyWith(qtx)).toList should equal(List(
ExecutionContext.from("a" -> 1, "r" -> "take 1/1"),
ExecutionContext.from("a" -> 2, "r" -> "take 1/2"),
ExecutionContext.from("a" -> 2, "r" -> "take 2/2")
))
}
test("should execute void procedure calls") {
val lhsData = List(Map("a" -> 1), Map("a" -> 2))
val lhs = new FakePipe(lhsData.iterator, "a" -> CTNumber)
val pipe = ProcedureCallPipe(
source = lhs,
name = procedureName,
callMode = EagerReadWriteCallMode(emptyStringArray),
argExprs = Seq(Variable("a")),
rowProcessing = PassThroughRow,
resultSymbols = Seq.empty,
resultIndices = Seq.empty
)()(newMonitor)
val qtx = new FakeQueryContext(procedureName, _ => Iterator.empty, ProcedureReadWriteAccess(emptyStringArray))
pipe.createResults(QueryStateHelper.emptyWith(qtx)).toList should equal(List(
ExecutionContext.from("a" -> 1),
ExecutionContext.from("a" -> 2)
))
}
private def resultsTransformer(args: Seq[Any]): Iterator[Array[AnyRef]] = {
val count = args.head.asInstanceOf[Number].intValue()
1.to(count).map { i =>
Array[AnyRef](s"take $i/$count")
}
}.toIterator
class FakeQueryContext(procedureName: QualifiedName, result: Seq[Any] => Iterator[Array[AnyRef]],
expectedAccessMode: ProcedureAccessMode) extends QueryContext with QueryContextAdaptation {
override def isGraphKernelResultValue(v: Any): Boolean = false
override def callReadOnlyProcedure(name: QualifiedName, args: Seq[Any], allowed: Array[String]) = {
expectedAccessMode should equal(ProcedureReadOnlyAccess(emptyStringArray))
doIt(name, args, allowed)
}
override def callReadWriteProcedure(name: QualifiedName, args: Seq[Any], allowed: Array[String]): Iterator[Array[AnyRef]] = {
expectedAccessMode should equal(ProcedureReadWriteAccess(emptyStringArray))
doIt(name, args, allowed)
}
private def doIt(name: QualifiedName, args: Seq[Any], allowed: Array[String]): Iterator[Array[AnyRef]] = {
name should equal(procedureName)
args.length should be(1)
result(args)
}
override def kernelStatisticProvider(): KernelStatisticProvider = {
EmptyKernelStatisticProvider
}
}
}