-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
KeyReadTokenNameLookup.java
84 lines (78 loc) · 2.54 KB
/
KeyReadTokenNameLookup.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
/*
* 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.api;
import org.neo4j.internal.kernel.api.TokenNameLookup;
import org.neo4j.internal.kernel.api.exceptions.PropertyKeyIdNotFoundKernelException;
import org.neo4j.kernel.api.exceptions.LabelNotFoundKernelException;
import org.neo4j.kernel.api.exceptions.RelationshipTypeIdNotFoundKernelException;
import org.neo4j.kernel.impl.api.operations.KeyReadOperations;
/**
* Instances allow looking up ids back to their names.
*/
public final class KeyReadTokenNameLookup implements TokenNameLookup
{
private final KeyReadOperations read;
public KeyReadTokenNameLookup( KeyReadOperations read )
{
this.read = read;
}
/**
* Returns the label name for the given label id. In case of downstream failure, returns label[id].
*/
@Override
public String labelGetName( int labelId )
{
try
{
return read.labelGetName( null, labelId );
}
catch ( LabelNotFoundKernelException e )
{
return "[" + labelId + "]";
}
}
@Override
public String relationshipTypeGetName( int relTypeId )
{
try
{
return read.relationshipTypeGetName( null, relTypeId );
}
catch ( RelationshipTypeIdNotFoundKernelException e )
{
return "[" + relTypeId + "]";
}
}
/**
* Returns the name of a property given its property key id. In case of downstream failure, returns property[id].
*/
@Override
public String propertyKeyGetName( int propertyKeyId )
{
try
{
return read.propertyKeyGetName( null, propertyKeyId );
}
catch ( PropertyKeyIdNotFoundKernelException e )
{
return "[" + propertyKeyId + "]";
}
}
}