-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
FusionIndexSampler.java
67 lines (60 loc) · 2.08 KB
/
FusionIndexSampler.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
/*
* Copyright (c) 2002-2019 "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 org.neo4j.kernel.api.exceptions.index.IndexNotFoundKernelException;
import org.neo4j.storageengine.api.schema.IndexSample;
import org.neo4j.storageengine.api.schema.IndexSampler;
import static org.neo4j.io.IOUtils.closeAllSilently;
public class FusionIndexSampler implements IndexSampler
{
private final IndexSampler[] samplers;
public FusionIndexSampler( IndexSampler... samplers )
{
this.samplers = samplers;
}
@Override
public IndexSample sampleIndex() throws IndexNotFoundKernelException
{
IndexSample[] samples = new IndexSample[samplers.length];
for ( int i = 0; i < samplers.length; i++ )
{
samples[i] = samplers[i].sampleIndex();
}
return combineSamples( samples );
}
public static IndexSample combineSamples( IndexSample... samples )
{
long indexSize = 0;
long uniqueValues = 0;
long sampleSize = 0;
for ( IndexSample sample : samples )
{
indexSize += sample.indexSize();
uniqueValues += sample.uniqueValues();
sampleSize += sample.sampleSize();
}
return new IndexSample( indexSize, uniqueValues, sampleSize );
}
@Override
public void close()
{
closeAllSilently( samplers );
}
}