|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Wikibase\QueryEngine\SQLStore\DVHandler; |
|
4
|
|
|
|
|
5
|
|
|
use DataValues\DataValue; |
|
6
|
|
|
use DataValues\MonolingualTextValue; |
|
7
|
|
|
use Doctrine\DBAL\Schema\Table; |
|
8
|
|
|
use Doctrine\DBAL\Types\Type; |
|
9
|
|
|
use InvalidArgumentException; |
|
10
|
|
|
use Wikibase\QueryEngine\SQLStore\DataValueHandler; |
|
11
|
|
|
use Wikibase\QueryEngine\StringHasher; |
|
12
|
|
|
|
|
13
|
|
|
/** |
|
14
|
|
|
* Represents the mapping between MonolingualTextValue and |
|
15
|
|
|
* the corresponding table in the store. |
|
16
|
|
|
* |
|
17
|
|
|
* @since 0.1 |
|
18
|
|
|
* |
|
19
|
|
|
* @licence GNU GPL v2+ |
|
20
|
|
|
* @author Jeroen De Dauw < [email protected] > |
|
21
|
|
|
* @author Thiemo Kreuz |
|
22
|
|
|
*/ |
|
23
|
|
|
class MonolingualTextHandler extends DataValueHandler { |
|
24
|
|
|
|
|
25
|
|
|
/** |
|
26
|
|
|
* @var StringHasher |
|
27
|
|
|
*/ |
|
28
|
|
|
private $stringHasher; |
|
29
|
|
|
|
|
30
|
|
|
/** |
|
31
|
|
|
* @see DataValueHandler::getBaseTableName |
|
32
|
|
|
* |
|
33
|
|
|
* @return string |
|
34
|
|
|
*/ |
|
35
|
|
|
protected function getBaseTableName() { |
|
36
|
|
|
return 'mono_text'; |
|
37
|
|
|
} |
|
38
|
|
|
|
|
39
|
|
|
/** |
|
40
|
|
|
* @see DataValueHandler::completeTable |
|
41
|
|
|
*/ |
|
42
|
|
|
protected function completeTable( Table $table ) { |
|
43
|
|
|
$table->addColumn( 'value_text', Type::TEXT ); |
|
44
|
|
|
// See http://tools.ietf.org/html/rfc5646#section-4.4.1 |
|
45
|
|
|
$table->addColumn( 'value_language', Type::STRING, array( 'length' => 35 ) ); |
|
46
|
|
|
$table->addColumn( 'hash', Type::STRING, array( 'length' => StringHasher::LENGTH ) ); |
|
47
|
|
|
|
|
48
|
|
|
// TODO: Is an index on the first 255 bytes/chars of each BLOB/CLOB column possible? |
|
49
|
|
|
$table->addIndex( array( 'value_language' ) ); |
|
50
|
|
|
$table->addIndex( array( 'hash' ) ); |
|
51
|
|
|
} |
|
52
|
|
|
|
|
53
|
|
|
/** |
|
54
|
|
|
* @see DataValueHandler::getInsertValues |
|
55
|
|
|
* |
|
56
|
|
|
* @param DataValue $value |
|
57
|
|
|
* |
|
58
|
|
|
* @throws InvalidArgumentException |
|
59
|
|
|
* @return string[] |
|
60
|
|
|
*/ |
|
61
|
|
|
public function getInsertValues( DataValue $value ) { |
|
62
|
|
|
if ( !( $value instanceof MonolingualTextValue ) ) { |
|
63
|
|
|
throw new InvalidArgumentException( 'Value is not a MonolingualTextValue.' ); |
|
64
|
|
|
} |
|
65
|
|
|
|
|
66
|
|
|
$values = array( |
|
67
|
|
|
'value_text' => $value->getText(), |
|
68
|
|
|
'value_language' => $value->getLanguageCode(), |
|
69
|
|
|
|
|
70
|
|
|
'hash' => $this->getEqualityFieldValue( $value ) |
|
71
|
|
|
); |
|
72
|
|
|
|
|
73
|
|
|
return $values; |
|
74
|
|
|
} |
|
75
|
|
|
|
|
76
|
|
|
/** |
|
77
|
|
|
* @see DataValueHandler::getEqualityFieldValue |
|
78
|
|
|
* |
|
79
|
|
|
* @param DataValue $value |
|
80
|
|
|
* |
|
81
|
|
|
* @throws InvalidArgumentException |
|
82
|
|
|
* @return string |
|
83
|
|
|
*/ |
|
84
|
|
|
public function getEqualityFieldValue( DataValue $value ) { |
|
85
|
|
|
if ( !( $value instanceof MonolingualTextValue ) ) { |
|
86
|
|
|
throw new InvalidArgumentException( 'Value is not a MonolingualTextValue.' ); |
|
87
|
|
|
} |
|
88
|
|
|
|
|
89
|
|
|
return $this->hash( addcslashes( $value->getText(), '\\|' ) |
|
90
|
|
|
. '|' . addcslashes( $value->getLanguageCode(), '\\|' ) ); |
|
91
|
|
|
} |
|
92
|
|
|
|
|
93
|
|
|
private function hash( $string ) { |
|
94
|
|
|
if ( $this->stringHasher === null ) { |
|
95
|
|
|
$this->stringHasher = new StringHasher(); |
|
96
|
|
|
} |
|
97
|
|
|
|
|
98
|
|
|
return $this->stringHasher->hash( $string ); |
|
99
|
|
|
} |
|
100
|
|
|
|
|
101
|
|
|
} |
|
102
|
|
|
|
wmde /
WikibaseQueryEngine
