-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
FusionIndexReader.java
119 lines (108 loc) · 4.63 KB
/
FusionIndexReader.java
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
/*
* Copyright (c) 2002-2018 "Neo4j,"
* Neo4j Sweden AB [http://neo4j.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.kernel.impl.index.schema.fusion;
import java.util.Arrays;
import org.neo4j.collection.PrimitiveLongResourceIterator;
import org.neo4j.graphdb.Resource;
import org.neo4j.internal.kernel.api.IndexOrder;
import org.neo4j.internal.kernel.api.IndexQuery;
import org.neo4j.internal.kernel.api.IndexQuery.ExistsPredicate;
import org.neo4j.kernel.api.exceptions.index.IndexNotApplicableKernelException;
import org.neo4j.kernel.api.schema.index.IndexDescriptor;
import org.neo4j.kernel.impl.api.schema.BridgingIndexProgressor;
import org.neo4j.storageengine.api.schema.IndexProgressor;
import org.neo4j.storageengine.api.schema.IndexReader;
import org.neo4j.storageengine.api.schema.IndexSampler;
import org.neo4j.values.storable.Value;
import static java.lang.String.format;
import static org.neo4j.collection.PrimitiveLongResourceCollections.concat;
class FusionIndexReader extends FusionIndexBase<IndexReader> implements IndexReader
{
private final IndexDescriptor descriptor;
FusionIndexReader( SlotSelector slotSelector, LazyInstanceSelector<IndexReader> instanceSelector, IndexDescriptor descriptor )
{
super( slotSelector, instanceSelector );
this.descriptor = descriptor;
}
@Override
public void close()
{
instanceSelector.close( Resource::close );
}
@Override
public long countIndexedNodes( long nodeId, Value... propertyValues )
{
return instanceSelector.select( slotSelector.selectSlot( propertyValues, GROUP_OF ) ).countIndexedNodes( nodeId, propertyValues );
}
@Override
public IndexSampler createSampler()
{
return new FusionIndexSampler( instanceSelector.transform( IndexReader::createSampler ) );
}
@Override
public PrimitiveLongResourceIterator query( IndexQuery... predicates ) throws IndexNotApplicableKernelException
{
IndexSlot slot = slotSelector.selectSlot( predicates, IndexQuery::valueGroup );
return slot != null
? instanceSelector.select( slot ).query( predicates )
: concat( instanceSelector.transform( reader -> reader.query( predicates ) ) );
}
@Override
public void query( IndexProgressor.NodeValueClient cursor, IndexOrder indexOrder, IndexQuery... predicates )
throws IndexNotApplicableKernelException
{
IndexSlot slot = slotSelector.selectSlot( predicates, IndexQuery::valueGroup );
if ( slot != null )
{
instanceSelector.select( slot ).query( cursor, indexOrder, predicates );
}
else
{
if ( indexOrder != IndexOrder.NONE )
{
throw new UnsupportedOperationException(
format( "Tried to query index with unsupported order %s. Supported orders for query %s are %s.",
indexOrder, Arrays.toString( predicates ), IndexOrder.NONE ) );
}
BridgingIndexProgressor multiProgressor = new BridgingIndexProgressor( cursor,
descriptor.schema().getPropertyIds() );
cursor.initialize( descriptor, multiProgressor, predicates );
instanceSelector.forAll( reader -> reader.query( multiProgressor, indexOrder, predicates ) );
}
}
@Override
public boolean hasFullValuePrecision( IndexQuery... predicates )
{
IndexSlot slot = slotSelector.selectSlot( predicates, IndexQuery::valueGroup );
if ( slot != null )
{
return instanceSelector.select( slot ).hasFullValuePrecision( predicates );
}
else
{
// UNKNOWN slot which basically means the EXISTS predicate
if ( !(predicates.length == 1 && predicates[0] instanceof ExistsPredicate) )
{
throw new IllegalStateException( "Selected IndexReader null for predicates " + Arrays.toString( predicates ) );
}
return true;
}
}
}