-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
TransactionBoundPlanContext.scala
201 lines (165 loc) · 9.33 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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
/*
* 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.spi.v3_1
import java.util.Optional
import org.neo4j.cypher.MissingIndexException
import org.neo4j.cypher.internal.LastCommittedTxIdProvider
import org.neo4j.cypher.internal.compiler.v3_1.InternalNotificationLogger
import org.neo4j.cypher.internal.compiler.v3_1.pipes.EntityProducer
import org.neo4j.cypher.internal.compiler.v3_1.pipes.matching.ExpanderStep
import org.neo4j.cypher.internal.compiler.v3_1.spi.SchemaTypes.{IndexDescriptor, UniquenessConstraint}
import org.neo4j.cypher.internal.compiler.v3_1.spi._
import org.neo4j.cypher.internal.frontend.v3_1.symbols.CypherType
import org.neo4j.cypher.internal.frontend.v3_1.{CypherExecutionException, symbols}
import org.neo4j.graphdb.Node
import org.neo4j.kernel.api.exceptions.KernelException
import org.neo4j.kernel.api.exceptions.schema.SchemaKernelException
import org.neo4j.kernel.api.index.InternalIndexState
import org.neo4j.kernel.api.proc.Neo4jTypes.AnyType
import org.neo4j.kernel.api.proc.{Neo4jTypes, QualifiedName => KernelQualifiedName}
import org.neo4j.kernel.api.schema.SchemaDescriptorFactory
import org.neo4j.kernel.api.schema.constaints.ConstraintDescriptor
import org.neo4j.kernel.api.schema.index.{IndexDescriptor => KernelIndexDescriptor}
import org.neo4j.kernel.impl.proc.Neo4jValue
import org.neo4j.procedure.Mode
import scala.collection.JavaConverters._
class TransactionBoundPlanContext(tc: TransactionalContextWrapper, logger: InternalNotificationLogger)
extends TransactionBoundTokenContext(tc.statement) with PlanContext with SchemaDescriptorTranslation {
@Deprecated
def getIndexRule(labelName: String, propertyKey: String): Option[IndexDescriptor] = evalOrNone {
val labelId = tc.statement.readOperations().labelGetForName(labelName)
val propertyKeyId = tc.statement.readOperations().propertyKeyGetForName(propertyKey)
getOnlineIndex(tc.statement.readOperations().indexGetForSchema(SchemaDescriptorFactory.forLabel(labelId, propertyKeyId)))
}
def hasIndexRule(labelName: String): Boolean = {
val labelId = tc.statement.readOperations().labelGetForName(labelName)
val indexDescriptors = tc.statement.readOperations().indexesGetForLabel(labelId).asScala
val onlineIndexDescriptors = indexDescriptors.flatMap(getOnlineIndex)
onlineIndexDescriptors.nonEmpty
}
def getUniqueIndexRule(labelName: String, propertyKey: String): Option[IndexDescriptor] = evalOrNone {
val labelId = tc.statement.readOperations().labelGetForName(labelName)
val propertyKeyId = tc.statement.readOperations().propertyKeyGetForName(propertyKey)
val schema = tc.statement.readOperations().indexGetForSchema(SchemaDescriptorFactory.forLabel(labelId, propertyKeyId))
if (schema.`type`() == KernelIndexDescriptor.Type.UNIQUE) getOnlineIndex(schema)
else None
}
private def evalOrNone[T](f: => Option[T]): Option[T] =
try { f } catch { case _: SchemaKernelException => None }
private def getOnlineIndex(descriptor: KernelIndexDescriptor): Option[IndexDescriptor] =
tc.statement.readOperations().indexGetState(descriptor) match {
case InternalIndexState.ONLINE => Some(descriptor)
case _ => None
}
def getUniquenessConstraint(labelName: String, propertyKey: String): Option[UniquenessConstraint] = try {
val labelId = tc.statement.readOperations().labelGetForName(labelName)
val propertyKeyId = tc.statement.readOperations().propertyKeyGetForName(propertyKey)
import scala.collection.JavaConverters._
tc.statement.readOperations().constraintsGetForSchema(
SchemaDescriptorFactory.forLabel(labelId, propertyKeyId)
).asScala.collectFirst {
case constraint: ConstraintDescriptor if constraint.enforcesUniqueness() =>
SchemaTypes.UniquenessConstraint(labelId, propertyKeyId)
}
} catch {
case _: KernelException => None
}
override def hasPropertyExistenceConstraint(labelName: String, propertyKey: String): Boolean = {
val labelId = tc.statement.readOperations().labelGetForName(labelName)
val propertyKeyId = tc.statement.readOperations().propertyKeyGetForName(propertyKey)
tc.statement.readOperations().constraintsGetForSchema(SchemaDescriptorFactory.forLabel(labelId, propertyKeyId)).hasNext
}
def checkNodeIndex(idxName: String) {
if (!tc.statement.readOperations().nodeLegacyIndexesGetAll().contains(idxName)) {
throw new MissingIndexException(idxName)
}
}
def checkRelIndex(idxName: String) {
if (!tc.statement.readOperations().relationshipLegacyIndexesGetAll().contains(idxName)) {
throw new MissingIndexException(idxName)
}
}
def getOrCreateFromSchemaState[T](key: Any, f: => T): T = {
val javaCreator = new java.util.function.Function[Any, T]() {
def apply(key: Any) = f
}
tc.statement.readOperations().schemaStateGetOrCreate(key, javaCreator)
}
// Legacy traversal matchers (pre-Ronja) (These were moved out to remove the dependency on the kernel)
override def monoDirectionalTraversalMatcher(steps: ExpanderStep, start: EntityProducer[Node]) =
new MonoDirectionalTraversalMatcher(steps, start)
override def bidirectionalTraversalMatcher(steps: ExpanderStep,
start: EntityProducer[Node],
end: EntityProducer[Node]) =
new BidirectionalTraversalMatcher(steps, start, end)
val statistics: GraphStatistics =
InstrumentedGraphStatistics(TransactionBoundGraphStatistics(tc.readOperations), new MutableGraphStatisticsSnapshot())
val txIdProvider = LastCommittedTxIdProvider(tc.graph)
override def procedureSignature(name: QualifiedName) = {
val kn = new KernelQualifiedName(name.namespace.asJava, name.name)
val ks = tc.statement.readOperations().procedureGet(kn)
val input = ks.inputSignature().asScala.map(s => FieldSignature(s.name(), asCypherType(s.neo4jType()), asOption(s.defaultValue()).map(asCypherValue))).toIndexedSeq
val output = if (ks.isVoid) None else Some(ks.outputSignature().asScala.map(s => FieldSignature(s.name(), asCypherType(s.neo4jType()))).toIndexedSeq)
val deprecationInfo = asOption(ks.deprecated())
val mode = asCypherProcMode(ks.mode(), ks.allowed())
val description = asOption(ks.description())
ProcedureSignature(name, input, output, deprecationInfo, mode, description)
}
override def functionSignature(name: QualifiedName): Option[UserFunctionSignature] = {
val kn = new KernelQualifiedName(name.namespace.asJava, name.name)
val maybeFunction = tc.statement.readOperations().functionGet(kn)
if (maybeFunction.isPresent) {
val ks = maybeFunction.get
val input = ks.inputSignature().asScala.map(s => FieldSignature(s.name(), asCypherType(s.neo4jType()), asOption(s.defaultValue()).map(asCypherValue))).toIndexedSeq
val output = asCypherType(ks.outputType())
val deprecationInfo = asOption(ks.deprecated())
val description = asOption(ks.description())
Some(UserFunctionSignature(name, input, output, deprecationInfo, ks.allowed(), description))
}
else None
}
private def asOption[T](optional: Optional[T]): Option[T] = if (optional.isPresent) Some(optional.get()) else None
private def asCypherProcMode(mode: Mode, allowed: Array[String]): ProcedureAccessMode = mode match {
case Mode.READ => ProcedureReadOnlyAccess(allowed)
case Mode.DEFAULT => ProcedureReadOnlyAccess(allowed)
case Mode.WRITE => ProcedureReadWriteAccess(allowed)
case Mode.SCHEMA => ProcedureSchemaWriteAccess(allowed)
case Mode.DBMS => ProcedureDbmsAccess(allowed)
case _ => throw new CypherExecutionException(
"Unable to execute procedure, because it requires an unrecognized execution mode: " + mode.name(), null )
}
private def asCypherValue(neo4jValue: Neo4jValue) = CypherValue(neo4jValue.value, asCypherType(neo4jValue.neo4jType()))
private def asCypherType(neoType: AnyType): CypherType = neoType match {
case Neo4jTypes.NTString => symbols.CTString
case Neo4jTypes.NTInteger => symbols.CTInteger
case Neo4jTypes.NTFloat => symbols.CTFloat
case Neo4jTypes.NTNumber => symbols.CTNumber
case Neo4jTypes.NTBoolean => symbols.CTBoolean
case l: Neo4jTypes.ListType => symbols.CTList(asCypherType(l.innerType()))
case Neo4jTypes.NTPoint => symbols.CTPoint
case Neo4jTypes.NTNode => symbols.CTNode
case Neo4jTypes.NTRelationship => symbols.CTRelationship
case Neo4jTypes.NTPath => symbols.CTPath
case Neo4jTypes.NTGeometry => symbols.CTGeometry
case Neo4jTypes.NTMap => symbols.CTMap
case Neo4jTypes.NTAny => symbols.CTAny
}
override def notificationLogger(): InternalNotificationLogger = logger
}