Search/Lucene/Search/Weight/Phrase.php
inherited
Classes
Zend Framework
LICENSE
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- Category
- Zend
- Copyright
- Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- License
- New BSD License
- Package
- Zend_Search_Lucene
- Subpackage
- Search
- Version
- $Id: Phrase.php 24593 2012-01-05 20:35:02Z matthew $
\Zend_Search_Lucene_Search_Weight_Phrase
Calculate query weights and build query scorers.
A Weight is constructed by a query Query->createWeight(). The sumOfSquaredWeights() method is then called on the top-level query to compute the query normalization factor Similarity->queryNorm(float). This factor is then passed to normalize(float). At this point the weighting is complete.
- Parent(s)
- \Zend_Search_Lucene_Search_Weight
- Category
- Zend
- Copyright
- Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
- License
- New BSD License
Properties
float $_idf = Score factor
- Type
- float
\Zend_Search_Lucene_Search_Query_Phrase $_query = The query that this concerns.
float $_queryNorm =
This value is stored only for query expanation purpose and not used in any other place
- Type
- float
- Inherited_from
- \Zend_Search_Lucene_Search_Weight::$$_queryNorm
float $_value =
Weight value may be initialized in sumOfSquaredWeights() or normalize() because they both are invoked either in Query::_initWeight (for top-level query) or in corresponding methods of parent query's weights
- Type
- float
- Inherited_from
- \Zend_Search_Lucene_Search_Weight::$$_value
Methods
__construct(\Zend_Search_Lucene_Search_Query_Phrase $query, \Zend_Search_Lucene_Interface $reader) : voidZend_Search_Lucene_Search_Weight_Phrase constructor
| Name | Type | Description |
|---|---|---|
| $query | \Zend_Search_Lucene_Search_Query_Phrase | |
| $reader | \Zend_Search_Lucene_Interface |
getValue() : float
| Type | Description |
|---|---|
| float |
normalize(float $queryNorm) : voidAssigns the query normalization factor to this.
| Name | Type | Description |
|---|---|---|
| $queryNorm | float |
sumOfSquaredWeights() : floatThe sum of squared weights of contained query clauses.
| Type | Description |
|---|---|
| float |