-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
CountsComputer.java
100 lines (90 loc) · 3.94 KB
/
CountsComputer.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
/*
* 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.kernel.impl.store;
import org.neo4j.io.pagecache.PageCache;
import org.neo4j.kernel.impl.api.CountsAccessor;
import org.neo4j.kernel.impl.store.counts.CountsTracker;
import org.neo4j.kernel.impl.store.kvstore.DataInitializer;
import org.neo4j.unsafe.impl.batchimport.Configuration;
import org.neo4j.unsafe.impl.batchimport.NodeCountsStage;
import org.neo4j.unsafe.impl.batchimport.RelationshipCountsStage;
import org.neo4j.unsafe.impl.batchimport.cache.NodeLabelsCache;
import org.neo4j.unsafe.impl.batchimport.cache.NumberArrayFactory;
import static org.neo4j.unsafe.impl.batchimport.staging.ExecutionSupervisors.superviseDynamicExecution;
public class CountsComputer implements DataInitializer<CountsAccessor.Updater>
{
private final NumberArrayFactory numberArrayFactory;
public static void recomputeCounts( NeoStores stores, PageCache pageCache )
{
MetaDataStore metaDataStore = stores.getMetaDataStore();
CountsTracker counts = stores.getCounts();
try ( CountsAccessor.Updater updater = counts.reset( metaDataStore.getLastCommittedTransactionId() ) )
{
new CountsComputer( stores, pageCache ).initialize( updater );
}
}
private final NodeStore nodes;
private final RelationshipStore relationships;
private final int highLabelId;
private final int highRelationshipTypeId;
private final long lastCommittedTransactionId;
public CountsComputer( NeoStores stores, PageCache pageCache )
{
this( stores.getMetaDataStore().getLastCommittedTransactionId(),
stores.getNodeStore(), stores.getRelationshipStore(),
(int) stores.getLabelTokenStore().getHighId(),
(int) stores.getRelationshipTypeTokenStore().getHighId(),
NumberArrayFactory.auto( pageCache, stores.getStoreDir() ) );
}
public CountsComputer( long lastCommittedTransactionId, NodeStore nodes, RelationshipStore relationships,
int highLabelId, int highRelationshipTypeId, NumberArrayFactory numberArrayFactory )
{
this.lastCommittedTransactionId = lastCommittedTransactionId;
this.nodes = nodes;
this.relationships = relationships;
this.highLabelId = highLabelId;
this.highRelationshipTypeId = highRelationshipTypeId;
this.numberArrayFactory = numberArrayFactory;
}
@Override
public void initialize( CountsAccessor.Updater countsUpdater )
{
NodeLabelsCache cache = new NodeLabelsCache( numberArrayFactory, highLabelId );
try
{
// Count nodes
superviseDynamicExecution(
new NodeCountsStage( Configuration.DEFAULT, cache, nodes, highLabelId, countsUpdater ) );
// Count relationships
superviseDynamicExecution(
new RelationshipCountsStage( Configuration.DEFAULT, cache, relationships, highLabelId,
highRelationshipTypeId, countsUpdater, numberArrayFactory ) );
}
finally
{
cache.close();
}
}
@Override
public long initialVersion()
{
return lastCommittedTransactionId;
}
}