-
Notifications
You must be signed in to change notification settings - Fork 2.3k
/
CompiledConversionUtils.java
174 lines (151 loc) · 5 KB
/
CompiledConversionUtils.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
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
/*
* Copyright (c) 2002-2016 "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.codegen;
import java.lang.reflect.Array;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import org.neo4j.cypher.internal.frontend.v3_2.CypherTypeException;
import org.neo4j.cypher.internal.frontend.v3_2.IncomparableValuesException;
import org.neo4j.graphdb.Node;
import org.neo4j.graphdb.Relationship;
// Class with static methods used by compiled execution plans
public abstract class CompiledConversionUtils
{
public static boolean coerceToPredicate( Object value )
{
if ( value == null )
{
return false;
}
if ( value instanceof Boolean )
{
return (boolean) value;
}
if ( value.getClass().isArray() )
{
return Array.getLength( value ) > 0;
}
throw new CypherTypeException( "Don't know how to treat that as a predicate: " + value.toString(), null );
}
public static Collection<?> toCollection( Object value )
{
if ( value == null )
{
return Collections.emptyList();
}
if ( value instanceof Collection<?> )
{
return ((Collection<?>) value);
}
throw new CypherTypeException( "Don't know how to create an iterable out of " + value.getClass().getSimpleName(), null );
}
public static CompositeKey compositeKey( long... keys )
{
return new CompositeKey( keys );
}
public static class CompositeKey
{
private final long[] key;
private CompositeKey( long[] key )
{
this.key = key;
}
@Override
public boolean equals( Object o )
{
if ( this == o )
{ return true; }
if ( o == null || getClass() != o.getClass() )
{ return false; }
CompositeKey that = (CompositeKey) o;
return Arrays.equals( key, that.key );
}
@Override
public int hashCode()
{
return Arrays.hashCode( key );
}
}
public static Boolean equals( Object lhs, Object rhs )
{
if ( lhs == null || rhs == null )
{
return null;
}
if ( (lhs instanceof NodeIdWrapper && !(rhs instanceof NodeIdWrapper)) ||
(rhs instanceof NodeIdWrapper && !(lhs instanceof NodeIdWrapper)) ||
(lhs instanceof RelationshipIdWrapper && !(rhs instanceof RelationshipIdWrapper)) ||
(rhs instanceof RelationshipIdWrapper && !(lhs instanceof RelationshipIdWrapper)) )
{
throw new IncomparableValuesException( lhs.getClass().getSimpleName(), rhs.getClass().getSimpleName() );
}
return CompiledEquivalenceUtils.equals( lhs, rhs );
}
public static Boolean or( Object lhs, Object rhs )
{
if ( lhs == null && rhs == null )
{
return null;
}
else if ( lhs == null && rhs instanceof Boolean )
{
return (Boolean) rhs ? true : null;
}
else if ( rhs == null && lhs instanceof Boolean )
{
return (Boolean) lhs ? true : null;
}
else if ( lhs instanceof Boolean && rhs instanceof Boolean )
{
return (Boolean) lhs || (Boolean) rhs;
}
throw new CypherTypeException(
"Don't know how to do or on: " + (lhs != null ? lhs.toString() : null) + " and " +
(rhs != null ? rhs.toString() : null), null );
}
public static Boolean not( Object predicate )
{
if ( predicate == null )
{
return null;
}
if ( predicate instanceof Boolean )
{
return !(Boolean) predicate;
}
throw new CypherTypeException( "Don't know how to treat that as a boolean: " + predicate.toString(), null );
}
public static Object loadParameter( Object value )
{
if ( value instanceof Node )
{
return new NodeIdWrapper( ((Node) value).getId() );
}
else if ( value instanceof Relationship )
{
return new RelationshipIdWrapper( ((Relationship) value).getId() );
}
else
{
return value;
}
}
}