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DelegatingQueryContext.scala
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DelegatingQueryContext.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.spi
import java.net.URL
import org.neo4j.cypher.internal.compiler.v3_2.IndexDescriptor
import org.neo4j.cypher.internal.compiler.v3_2.commands.expressions.{Expander, KernelPredicate, UserDefinedAggregator}
import org.neo4j.cypher.internal.compiler.v3_2.pipes.matching.PatternNode
import org.neo4j.cypher.internal.frontend.v3_2.SemanticDirection
import org.neo4j.graphdb.{Node, Path, PropertyContainer, Relationship}
import scala.collection.Iterator
class DelegatingQueryContext(val inner: QueryContext) extends QueryContext {
protected def singleDbHit[A](value: A): A = value
protected def manyDbHits[A](value: Iterator[A]): Iterator[A] = value
protected def manyDbHits(count: Int): Int = count
type EntityAccessor = inner.EntityAccessor
override def transactionalContext: QueryTransactionalContext = inner.transactionalContext
override def entityAccessor: EntityAccessor = inner.entityAccessor
override def setLabelsOnNode(node: Long, labelIds: Iterator[Int]): Int =
singleDbHit(inner.setLabelsOnNode(node, labelIds))
override def createNode(): Node = singleDbHit(inner.createNode())
override def createRelationship(start: Node, end: Node, relType: String): Relationship = singleDbHit(inner
.createRelationship(start, end, relType))
override def createRelationship(start: Long, end: Long, relType: Int): Relationship =
singleDbHit(inner.createRelationship(start, end, relType))
override def getOrCreateRelTypeId(relTypeName: String): Int = singleDbHit(inner.getOrCreateRelTypeId(relTypeName))
override def getLabelsForNode(node: Long): Iterator[Int] = singleDbHit(inner.getLabelsForNode(node))
override def getLabelName(id: Int): String = singleDbHit(inner.getLabelName(id))
override def getOptLabelId(labelName: String): Option[Int] = singleDbHit(inner.getOptLabelId(labelName))
override def getLabelId(labelName: String): Int = singleDbHit(inner.getLabelId(labelName))
override def getOrCreateLabelId(labelName: String): Int = singleDbHit(inner.getOrCreateLabelId(labelName))
override def getRelationshipsForIds(node: Node, dir: SemanticDirection, types: Option[Seq[Int]]): Iterator[Relationship] =
manyDbHits(inner.getRelationshipsForIds(node, dir, types))
override def nodeOps = inner.nodeOps
override def relationshipOps = inner.relationshipOps
override def removeLabelsFromNode(node: Long, labelIds: Iterator[Int]): Int =
singleDbHit(inner.removeLabelsFromNode(node, labelIds))
override def getPropertiesForNode(node: Long): Iterator[Int] = singleDbHit(inner.getPropertiesForNode(node))
override def getPropertiesForRelationship(relId: Long): Iterator[Int] =
singleDbHit(inner.getPropertiesForRelationship(relId))
override def getPropertyKeyName(propertyKeyId: Int): String = singleDbHit(inner.getPropertyKeyName(propertyKeyId))
override def getOptPropertyKeyId(propertyKeyName: String): Option[Int] =
singleDbHit(inner.getOptPropertyKeyId(propertyKeyName))
override def getPropertyKeyId(propertyKey: String) = singleDbHit(inner.getPropertyKeyId(propertyKey))
override def getOrCreatePropertyKeyId(propertyKey: String) = singleDbHit(inner.getOrCreatePropertyKeyId(propertyKey))
override def addIndexRule(descriptor: IndexDescriptor) = singleDbHit(inner.addIndexRule(descriptor))
override def dropIndexRule(descriptor: IndexDescriptor) = singleDbHit(inner.dropIndexRule(descriptor))
override def indexSeek(index: IndexDescriptor, values: Seq[Any]): Iterator[Node] =
manyDbHits(inner.indexSeek(index, values))
override def indexSeekByRange(index: IndexDescriptor, value: Any): Iterator[Node] =
manyDbHits(inner.indexSeekByRange(index, value))
override def indexScan(index: IndexDescriptor): Iterator[Node] = manyDbHits(inner.indexScan(index))
override def indexScanByContains(index: IndexDescriptor, value: String): scala.Iterator[Node] =
manyDbHits(inner.indexScanByContains(index, value))
override def indexScanByEndsWith(index: IndexDescriptor, value: String): scala.Iterator[Node] =
manyDbHits(inner.indexScanByEndsWith(index, value))
override def getNodesByLabel(id: Int): Iterator[Node] = manyDbHits(inner.getNodesByLabel(id))
override def getOrCreateFromSchemaState[K, V](key: K, creator: => V): V =
singleDbHit(inner.getOrCreateFromSchemaState(key, creator))
override def createNodeKeyConstraint(descriptor: IndexDescriptor): Boolean =
singleDbHit(inner.createNodeKeyConstraint(descriptor))
override def dropNodeKeyConstraint(descriptor: IndexDescriptor) =
singleDbHit(inner.dropNodeKeyConstraint(descriptor))
override def createUniqueConstraint(descriptor: IndexDescriptor): Boolean =
singleDbHit(inner.createUniqueConstraint(descriptor))
override def dropUniqueConstraint(descriptor: IndexDescriptor) =
singleDbHit(inner.dropUniqueConstraint(descriptor))
override def createNodePropertyExistenceConstraint(labelId: Int, propertyKeyId: Int): Boolean =
singleDbHit(inner.createNodePropertyExistenceConstraint(labelId, propertyKeyId))
override def dropNodePropertyExistenceConstraint(labelId: Int, propertyKeyId: Int) =
singleDbHit(inner.dropNodePropertyExistenceConstraint(labelId, propertyKeyId))
override def createRelationshipPropertyExistenceConstraint(relTypeId: Int, propertyKeyId: Int): Boolean =
singleDbHit(inner.createRelationshipPropertyExistenceConstraint(relTypeId, propertyKeyId))
override def dropRelationshipPropertyExistenceConstraint(relTypeId: Int, propertyKeyId: Int) =
singleDbHit(inner.dropRelationshipPropertyExistenceConstraint(relTypeId, propertyKeyId))
override def withAnyOpenQueryContext[T](work: (QueryContext) => T): T = inner.withAnyOpenQueryContext(work)
override def lockingUniqueIndexSeek(index: IndexDescriptor, value: Any): Option[Node] =
singleDbHit(inner.lockingUniqueIndexSeek(index, value))
override def getRelTypeId(relType: String): Int = singleDbHit(inner.getRelTypeId(relType))
override def getOptRelTypeId(relType: String): Option[Int] = singleDbHit(inner.getOptRelTypeId(relType))
override def getRelTypeName(id: Int): String = singleDbHit(inner.getRelTypeName(id))
override def getImportURL(url: URL): Either[String,URL] = inner.getImportURL(url)
override def relationshipStartNode(rel: Relationship) = inner.relationshipStartNode(rel)
override def relationshipEndNode(rel: Relationship) = inner.relationshipEndNode(rel)
override def nodeGetDegree(node: Long, dir: SemanticDirection): Int = singleDbHit(inner.nodeGetDegree(node, dir))
override def nodeGetDegree(node: Long, dir: SemanticDirection, relTypeId: Int): Int =
singleDbHit(inner.nodeGetDegree(node, dir, relTypeId))
override def nodeIsDense(node: Long): Boolean = singleDbHit(inner.nodeIsDense(node))
override def variableLengthPathExpand(node: PatternNode,
realNode: Node,
minHops: Option[Int],
maxHops: Option[Int],
direction: SemanticDirection,
relTypes: Seq[String]): Iterator[Path] =
manyDbHits(inner.variableLengthPathExpand(node, realNode, minHops, maxHops, direction, relTypes))
override def isLabelSetOnNode(label: Int, node: Long): Boolean = singleDbHit(inner.isLabelSetOnNode(label, node))
override def nodeCountByCountStore(labelId: Int): Long = singleDbHit(inner.nodeCountByCountStore(labelId))
override def relationshipCountByCountStore(startLabelId: Int, typeId: Int, endLabelId: Int): Long =
singleDbHit(inner.relationshipCountByCountStore(startLabelId, typeId, endLabelId))
override def lockNodes(nodeIds: Long*): Unit = inner.lockNodes(nodeIds:_*)
override def lockRelationships(relIds: Long*): Unit = inner.lockRelationships(relIds:_*)
override def singleShortestPath(left: Node, right: Node, depth: Int, expander: Expander,
pathPredicate: KernelPredicate[Path],
filters: Seq[KernelPredicate[PropertyContainer]]): Option[Path] =
singleDbHit(inner.singleShortestPath(left, right, depth, expander, pathPredicate, filters))
override def allShortestPath(left: Node, right: Node, depth: Int, expander: Expander,
pathPredicate: KernelPredicate[Path],
filters: Seq[KernelPredicate[PropertyContainer]]): Iterator[Path] =
manyDbHits(inner.allShortestPath(left, right, depth, expander, pathPredicate, filters))
override def callReadOnlyProcedure(name: QualifiedName, args: Seq[Any], allowed: Array[String]) =
singleDbHit(inner.callReadOnlyProcedure(name, args, allowed))
override def callReadWriteProcedure(name: QualifiedName, args: Seq[Any], allowed: Array[String]) =
singleDbHit(inner.callReadWriteProcedure(name, args, allowed))
override def callSchemaWriteProcedure(name: QualifiedName, args: Seq[Any], allowed: Array[String]) =
singleDbHit(inner.callSchemaWriteProcedure(name, args, allowed))
override def callDbmsProcedure(name: QualifiedName, args: Seq[Any], allowed: Array[String]) =
inner.callDbmsProcedure(name, args, allowed)
override def callFunction(name: QualifiedName, args: Seq[Any], allowed: Array[String]) =
singleDbHit(inner.callFunction(name, args, allowed))
override def aggregateFunction(name: QualifiedName,
allowed: Array[String]): UserDefinedAggregator =
singleDbHit(inner.aggregateFunction(name, allowed))
override def isGraphKernelResultValue(v: Any): Boolean =
inner.isGraphKernelResultValue(v)
override def detachDeleteNode(node: Node): Int = manyDbHits(inner.detachDeleteNode(node))
override def assertSchemaWritesAllowed(): Unit = inner.assertSchemaWritesAllowed()
override def kernelStatisticProvider(): KernelStatisticProvider = inner.kernelStatisticProvider()
}
class DelegatingOperations[T <: PropertyContainer](protected val inner: Operations[T]) extends Operations[T] {
protected def singleDbHit[A](value: A): A = value
protected def manyDbHits[A](value: Iterator[A]): Iterator[A] = value
override def delete(obj: T): Unit = singleDbHit(inner.delete(obj))
override def setProperty(obj: Long, propertyKey: Int, value: Any): Unit =
singleDbHit(inner.setProperty(obj, propertyKey, value))
override def getById(id: Long): T = singleDbHit(inner.getById(id))
override def getProperty(obj: Long, propertyKeyId: Int): Any = singleDbHit(inner.getProperty(obj, propertyKeyId))
override def hasProperty(obj: Long, propertyKeyId: Int): Boolean = singleDbHit(inner.hasProperty(obj, propertyKeyId))
override def propertyKeyIds(obj: Long): Iterator[Int] = singleDbHit(inner.propertyKeyIds(obj))
override def removeProperty(obj: Long, propertyKeyId: Int): Unit = singleDbHit(inner.removeProperty(obj, propertyKeyId))
override def indexGet(name: String, key: String, value: Any): Iterator[T] = manyDbHits(inner.indexGet(name, key, value))
override def indexQuery(name: String, query: Any): Iterator[T] = manyDbHits(inner.indexQuery(name, query))
override def all: Iterator[T] = manyDbHits(inner.all)
override def isDeletedInThisTx(obj: T): Boolean = inner.isDeletedInThisTx(obj)
override def acquireExclusiveLock(obj: Long): Unit = inner.acquireExclusiveLock(obj)
override def releaseExclusiveLock(obj: Long): Unit = inner.releaseExclusiveLock(obj)
}
class DelegatingQueryTransactionalContext(val inner: QueryTransactionalContext) extends QueryTransactionalContext {
override type ReadOps = inner.ReadOps
override type DbmsOps = inner.DbmsOps
override def readOperations: ReadOps = inner.readOperations
override def dbmsOperations: DbmsOps = inner.dbmsOperations
override def commitAndRestartTx() { inner.commitAndRestartTx() }
override def isTopLevelTx: Boolean = inner.isTopLevelTx
override def close(success: Boolean) { inner.close(success) }
}