/
TransactionBoundPlanContext.scala
98 lines (83 loc) · 4 KB
/
TransactionBoundPlanContext.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
/*
* Copyright (c) 2002-2015 "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.spi.v2_2
import org.neo4j.cypher.MissingIndexException
import org.neo4j.cypher.internal.compiler.v2_2.spi._
import org.neo4j.graphdb.GraphDatabaseService
import org.neo4j.kernel.GraphDatabaseAPI
import org.neo4j.kernel.api.Statement
import org.neo4j.kernel.api.constraints.UniquenessConstraint
import org.neo4j.kernel.api.exceptions.KernelException
import org.neo4j.kernel.api.exceptions.schema.SchemaRuleNotFoundException
import org.neo4j.kernel.api.index.{IndexDescriptor, InternalIndexState}
import org.neo4j.kernel.impl.transaction.log.TransactionIdStore
class TransactionBoundPlanContext(someStatement: Statement, val gdb: GraphDatabaseService)
extends TransactionBoundTokenContext(someStatement) with PlanContext {
@Deprecated
def getIndexRule(labelName: String, propertyKey: String): Option[IndexDescriptor] = evalOrNone {
val labelId = statement.readOperations().labelGetForName(labelName)
val propertyKeyId = statement.readOperations().propertyKeyGetForName(propertyKey)
getOnlineIndex(statement.readOperations().indexesGetForLabelAndPropertyKey(labelId, propertyKeyId))
}
def getUniqueIndexRule(labelName: String, propertyKey: String): Option[IndexDescriptor] = evalOrNone {
val labelId = statement.readOperations().labelGetForName(labelName)
val propertyKeyId = statement.readOperations().propertyKeyGetForName(propertyKey)
Some(statement.readOperations().uniqueIndexGetForLabelAndPropertyKey(labelId, propertyKeyId))
}
private def evalOrNone[T](f: => Option[T]): Option[T] =
try { f } catch { case _: SchemaRuleNotFoundException => None }
private def getOnlineIndex(descriptor: IndexDescriptor): Option[IndexDescriptor] =
statement.readOperations().indexGetState(descriptor) match {
case InternalIndexState.ONLINE => Some(descriptor)
case _ => None
}
def getUniquenessConstraint(labelName: String, propertyKey: String): Option[UniquenessConstraint] = try {
val labelId = statement.readOperations().labelGetForName(labelName)
val propertyKeyId = statement.readOperations().propertyKeyGetForName(propertyKey)
import scala.collection.JavaConverters._
statement.readOperations().constraintsGetForLabelAndPropertyKey(labelId, propertyKeyId).asScala.collectFirst {
case unique: UniquenessConstraint => unique
}
} catch {
case _: KernelException => None
}
def checkNodeIndex(idxName: String) {
if (!gdb.index().existsForNodes(idxName)) {
throw new MissingIndexException(idxName)
}
}
def checkRelIndex(idxName: String) {
if ( !gdb.index().existsForRelationships(idxName) ) {
throw new MissingIndexException(idxName)
}
}
def getOrCreateFromSchemaState[T](key: Any, f: => T): T = {
val javaCreator = new org.neo4j.function.Function[Any, T]() {
def apply(key: Any) = f
}
statement.readOperations().schemaStateGetOrCreate(key, javaCreator)
}
val statistics: GraphStatistics =
InstrumentedGraphStatistics(TransactionBoundGraphStatistics(statement), MutableGraphStatisticsSnapshot())
val txIdProvider: () => Long = gdb.asInstanceOf[GraphDatabaseAPI]
.getDependencyResolver
.resolveDependency(classOf[TransactionIdStore])
.getLastCommittedTransactionId
}