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1 |
1 | <?php |
2 | |
3 | namespace CirrusSearch\Parser\AST; |
4 | |
5 | use CirrusSearch\Parser\AST\Visitor\Visitor; |
6 | |
7 | /** |
8 | * A phrase |
9 | */ |
10 | class PhraseQueryNode extends ParsedNode { |
11 | /** |
12 | * @var string |
13 | */ |
14 | private $phrase; |
15 | |
16 | /** |
17 | * @var int |
18 | */ |
19 | private $slop; |
20 | |
21 | /** |
22 | * @var bool |
23 | */ |
24 | private $stem; |
25 | |
26 | /** |
27 | * @var bool |
28 | */ |
29 | private $unbalanced = false; |
30 | |
31 | /** |
32 | * @param int $start |
33 | * @param int $end |
34 | * @param string $phrase |
35 | * @param int $slop the edit distance (in words) allowed between words defined in this query, set to -1 |
36 | * if a specific slop is not specified in the syntax. |
37 | * @param bool $stem true if the syntax specifies that this phrase should be applied to stem fields |
38 | */ |
39 | public function __construct( $start, $end, $phrase, $slop, $stem ) { |
40 | parent::__construct( $start, $end ); |
41 | $this->phrase = $phrase; |
42 | $this->slop = $slop; |
43 | $this->stem = $stem; |
44 | } |
45 | |
46 | /** |
47 | * @param int $start |
48 | * @param int $end |
49 | * @param string $phrase |
50 | * @return PhraseQueryNode |
51 | */ |
52 | public static function unbalanced( $start, $end, $phrase ) { |
53 | $node = new self( $start, $end, $phrase, -1, false ); |
54 | $node->unbalanced = true; |
55 | return $node; |
56 | } |
57 | |
58 | /** |
59 | * @return array |
60 | */ |
61 | public function toArray() { |
62 | return [ |
63 | 'phrase' => array_merge( parent::baseParams(), [ |
64 | 'phrase' => $this->phrase, |
65 | 'slop' => $this->slop, |
66 | 'stem' => $this->stem, |
67 | 'unbalanced' => $this->unbalanced, |
68 | ] ) |
69 | ]; |
70 | } |
71 | |
72 | /** |
73 | * The phrase |
74 | * @return string |
75 | */ |
76 | public function getPhrase() { |
77 | return $this->phrase; |
78 | } |
79 | |
80 | /** |
81 | * number of words allowed between phrase words |
82 | * (-1 to use wiki defaults) |
83 | * @return int |
84 | */ |
85 | public function getSlop() { |
86 | return $this->slop; |
87 | } |
88 | |
89 | /** |
90 | * Should this phrase be applied on stem fields |
91 | * @return bool |
92 | */ |
93 | public function isStem() { |
94 | return $this->stem; |
95 | } |
96 | |
97 | /** |
98 | * True if this phrase was created by detecting unbalanced quotes in the query |
99 | * @return bool |
100 | */ |
101 | public function isUnbalanced() { |
102 | return $this->unbalanced; |
103 | } |
104 | |
105 | /** |
106 | * @param Visitor $visitor |
107 | */ |
108 | public function accept( Visitor $visitor ) { |
109 | $visitor->visitPhraseQueryNode( $this ); |
110 | } |
111 | } |