silverstripe-docsviewer/thirdparty/Zend/Search/Lucene/Proxy.php

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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Search_Lucene
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Proxy.php 20096 2010-01-06 02:05:09Z bkarwin $
*/
/** Zend_Search_Lucene_Interface */
require_once 'Zend/Search/Lucene/Interface.php';
/**
* Proxy class intended to be used in userland.
*
* It tracks, when index object goes out of scope and forces ndex closing
*
* @category Zend
* @package Zend_Search_Lucene
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Search_Lucene_Proxy implements Zend_Search_Lucene_Interface
{
/**
* Index object
*
* @var Zend_Search_Lucene_Interface
*/
private $_index;
/**
* Object constructor
*
* @param Zend_Search_Lucene_Interface $index
*/
public function __construct(Zend_Search_Lucene_Interface $index)
{
$this->_index = $index;
$this->_index->addReference();
}
/**
* Object destructor
*/
public function __destruct()
{
if ($this->_index !== null) {
// This code is invoked if Zend_Search_Lucene_Interface object constructor throws an exception
$this->_index->removeReference();
}
$this->_index = null;
}
/**
* Get current generation number
*
* Returns generation number
* 0 means pre-2.1 index format
* -1 means there are no segments files.
*
* @param Zend_Search_Lucene_Storage_Directory $directory
* @return integer
* @throws Zend_Search_Lucene_Exception
*/
public static function getActualGeneration(Zend_Search_Lucene_Storage_Directory $directory)
{
Zend_Search_Lucene::getActualGeneration($directory);
}
/**
* Get segments file name
*
* @param integer $generation
* @return string
*/
public static function getSegmentFileName($generation)
{
Zend_Search_Lucene::getSegmentFileName($generation);
}
/**
* Get index format version
*
* @return integer
*/
public function getFormatVersion()
{
return $this->_index->getFormatVersion();
}
/**
* Set index format version.
* Index is converted to this format at the nearest upfdate time
*
* @param int $formatVersion
* @throws Zend_Search_Lucene_Exception
*/
public function setFormatVersion($formatVersion)
{
$this->_index->setFormatVersion($formatVersion);
}
/**
* Returns the Zend_Search_Lucene_Storage_Directory instance for this index.
*
* @return Zend_Search_Lucene_Storage_Directory
*/
public function getDirectory()
{
return $this->_index->getDirectory();
}
/**
* Returns the total number of documents in this index (including deleted documents).
*
* @return integer
*/
public function count()
{
return $this->_index->count();
}
/**
* Returns one greater than the largest possible document number.
* This may be used to, e.g., determine how big to allocate a structure which will have
* an element for every document number in an index.
*
* @return integer
*/
public function maxDoc()
{
return $this->_index->maxDoc();
}
/**
* Returns the total number of non-deleted documents in this index.
*
* @return integer
*/
public function numDocs()
{
return $this->_index->numDocs();
}
/**
* Checks, that document is deleted
*
* @param integer $id
* @return boolean
* @throws Zend_Search_Lucene_Exception Exception is thrown if $id is out of the range
*/
public function isDeleted($id)
{
return $this->_index->isDeleted($id);
}
/**
* Set default search field.
*
* Null means, that search is performed through all fields by default
*
* Default value is null
*
* @param string $fieldName
*/
public static function setDefaultSearchField($fieldName)
{
Zend_Search_Lucene::setDefaultSearchField($fieldName);
}
/**
* Get default search field.
*
* Null means, that search is performed through all fields by default
*
* @return string
*/
public static function getDefaultSearchField()
{
return Zend_Search_Lucene::getDefaultSearchField();
}
/**
* Set result set limit.
*
* 0 (default) means no limit
*
* @param integer $limit
*/
public static function setResultSetLimit($limit)
{
Zend_Search_Lucene::setResultSetLimit($limit);
}
/**
* Set result set limit.
*
* 0 means no limit
*
* @return integer
*/
public static function getResultSetLimit()
{
return Zend_Search_Lucene::getResultSetLimit();
}
/**
* Retrieve index maxBufferedDocs option
*
* maxBufferedDocs is a minimal number of documents required before
* the buffered in-memory documents are written into a new Segment
*
* Default value is 10
*
* @return integer
*/
public function getMaxBufferedDocs()
{
return $this->_index->getMaxBufferedDocs();
}
/**
* Set index maxBufferedDocs option
*
* maxBufferedDocs is a minimal number of documents required before
* the buffered in-memory documents are written into a new Segment
*
* Default value is 10
*
* @param integer $maxBufferedDocs
*/
public function setMaxBufferedDocs($maxBufferedDocs)
{
$this->_index->setMaxBufferedDocs($maxBufferedDocs);
}
/**
* Retrieve index maxMergeDocs option
*
* maxMergeDocs is a largest number of documents ever merged by addDocument().
* Small values (e.g., less than 10,000) are best for interactive indexing,
* as this limits the length of pauses while indexing to a few seconds.
* Larger values are best for batched indexing and speedier searches.
*
* Default value is PHP_INT_MAX
*
* @return integer
*/
public function getMaxMergeDocs()
{
return $this->_index->getMaxMergeDocs();
}
/**
* Set index maxMergeDocs option
*
* maxMergeDocs is a largest number of documents ever merged by addDocument().
* Small values (e.g., less than 10,000) are best for interactive indexing,
* as this limits the length of pauses while indexing to a few seconds.
* Larger values are best for batched indexing and speedier searches.
*
* Default value is PHP_INT_MAX
*
* @param integer $maxMergeDocs
*/
public function setMaxMergeDocs($maxMergeDocs)
{
$this->_index->setMaxMergeDocs($maxMergeDocs);
}
/**
* Retrieve index mergeFactor option
*
* mergeFactor determines how often segment indices are merged by addDocument().
* With smaller values, less RAM is used while indexing,
* and searches on unoptimized indices are faster,
* but indexing speed is slower.
* With larger values, more RAM is used during indexing,
* and while searches on unoptimized indices are slower,
* indexing is faster.
* Thus larger values (> 10) are best for batch index creation,
* and smaller values (< 10) for indices that are interactively maintained.
*
* Default value is 10
*
* @return integer
*/
public function getMergeFactor()
{
return $this->_index->getMergeFactor();
}
/**
* Set index mergeFactor option
*
* mergeFactor determines how often segment indices are merged by addDocument().
* With smaller values, less RAM is used while indexing,
* and searches on unoptimized indices are faster,
* but indexing speed is slower.
* With larger values, more RAM is used during indexing,
* and while searches on unoptimized indices are slower,
* indexing is faster.
* Thus larger values (> 10) are best for batch index creation,
* and smaller values (< 10) for indices that are interactively maintained.
*
* Default value is 10
*
* @param integer $maxMergeDocs
*/
public function setMergeFactor($mergeFactor)
{
$this->_index->setMergeFactor($mergeFactor);
}
/**
* Performs a query against the index and returns an array
* of Zend_Search_Lucene_Search_QueryHit objects.
* Input is a string or Zend_Search_Lucene_Search_Query.
*
* @param mixed $query
* @return array Zend_Search_Lucene_Search_QueryHit
* @throws Zend_Search_Lucene_Exception
*/
public function find($query)
{
// actual parameter list
$parameters = func_get_args();
// invoke $this->_index->find() method with specified parameters
return call_user_func_array(array(&$this->_index, 'find'), $parameters);
}
/**
* Returns a list of all unique field names that exist in this index.
*
* @param boolean $indexed
* @return array
*/
public function getFieldNames($indexed = false)
{
return $this->_index->getFieldNames($indexed);
}
/**
* Returns a Zend_Search_Lucene_Document object for the document
* number $id in this index.
*
* @param integer|Zend_Search_Lucene_Search_QueryHit $id
* @return Zend_Search_Lucene_Document
*/
public function getDocument($id)
{
return $this->_index->getDocument($id);
}
/**
* Returns true if index contain documents with specified term.
*
* Is used for query optimization.
*
* @param Zend_Search_Lucene_Index_Term $term
* @return boolean
*/
public function hasTerm(Zend_Search_Lucene_Index_Term $term)
{
return $this->_index->hasTerm($term);
}
/**
* Returns IDs of all the documents containing term.
*
* @param Zend_Search_Lucene_Index_Term $term
* @param Zend_Search_Lucene_Index_DocsFilter|null $docsFilter
* @return array
*/
public function termDocs(Zend_Search_Lucene_Index_Term $term, $docsFilter = null)
{
return $this->_index->termDocs($term, $docsFilter);
}
/**
* Returns documents filter for all documents containing term.
*
* It performs the same operation as termDocs, but return result as
* Zend_Search_Lucene_Index_DocsFilter object
*
* @param Zend_Search_Lucene_Index_Term $term
* @param Zend_Search_Lucene_Index_DocsFilter|null $docsFilter
* @return Zend_Search_Lucene_Index_DocsFilter
*/
public function termDocsFilter(Zend_Search_Lucene_Index_Term $term, $docsFilter = null)
{
return $this->_index->termDocsFilter($term, $docsFilter);
}
/**
* Returns an array of all term freqs.
* Return array structure: array( docId => freq, ...)
*
* @param Zend_Search_Lucene_Index_Term $term
* @param Zend_Search_Lucene_Index_DocsFilter|null $docsFilter
* @return integer
*/
public function termFreqs(Zend_Search_Lucene_Index_Term $term, $docsFilter = null)
{
return $this->_index->termFreqs($term, $docsFilter);
}
/**
* Returns an array of all term positions in the documents.
* Return array structure: array( docId => array( pos1, pos2, ...), ...)
*
* @param Zend_Search_Lucene_Index_Term $term
* @param Zend_Search_Lucene_Index_DocsFilter|null $docsFilter
* @return array
*/
public function termPositions(Zend_Search_Lucene_Index_Term $term, $docsFilter = null)
{
return $this->_index->termPositions($term, $docsFilter);
}
/**
* Returns the number of documents in this index containing the $term.
*
* @param Zend_Search_Lucene_Index_Term $term
* @return integer
*/
public function docFreq(Zend_Search_Lucene_Index_Term $term)
{
return $this->_index->docFreq($term);
}
/**
* Retrive similarity used by index reader
*
* @return Zend_Search_Lucene_Search_Similarity
*/
public function getSimilarity()
{
return $this->_index->getSimilarity();
}
/**
* Returns a normalization factor for "field, document" pair.
*
* @param integer $id
* @param string $fieldName
* @return float
*/
public function norm($id, $fieldName)
{
return $this->_index->norm($id, $fieldName);
}
/**
* Returns true if any documents have been deleted from this index.
*
* @return boolean
*/
public function hasDeletions()
{
return $this->_index->hasDeletions();
}
/**
* Deletes a document from the index.
* $id is an internal document id
*
* @param integer|Zend_Search_Lucene_Search_QueryHit $id
* @throws Zend_Search_Lucene_Exception
*/
public function delete($id)
{
return $this->_index->delete($id);
}
/**
* Adds a document to this index.
*
* @param Zend_Search_Lucene_Document $document
*/
public function addDocument(Zend_Search_Lucene_Document $document)
{
$this->_index->addDocument($document);
}
/**
* Commit changes resulting from delete() or undeleteAll() operations.
*/
public function commit()
{
$this->_index->commit();
}
/**
* Optimize index.
*
* Merges all segments into one
*/
public function optimize()
{
$this->_index->optimize();
}
/**
* Returns an array of all terms in this index.
*
* @return array
*/
public function terms()
{
return $this->_index->terms();
}
/**
* Reset terms stream.
*/
public function resetTermsStream()
{
$this->_index->resetTermsStream();
}
/**
* Skip terms stream up to specified term preffix.
*
* Prefix contains fully specified field info and portion of searched term
*
* @param Zend_Search_Lucene_Index_Term $prefix
*/
public function skipTo(Zend_Search_Lucene_Index_Term $prefix)
{
return $this->_index->skipTo($prefix);
}
/**
* Scans terms dictionary and returns next term
*
* @return Zend_Search_Lucene_Index_Term|null
*/
public function nextTerm()
{
return $this->_index->nextTerm();
}
/**
* Returns term in current position
*
* @return Zend_Search_Lucene_Index_Term|null
*/
public function currentTerm()
{
return $this->_index->currentTerm();
}
/**
* Close terms stream
*
* Should be used for resources clean up if stream is not read up to the end
*/
public function closeTermsStream()
{
$this->_index->closeTermsStream();
}
/**
* Undeletes all documents currently marked as deleted in this index.
*/
public function undeleteAll()
{
return $this->_index->undeleteAll();
}
/**
* Add reference to the index object
*
* @internal
*/
public function addReference()
{
return $this->_index->addReference();
}
/**
* Remove reference from the index object
*
* When reference count becomes zero, index is closed and resources are cleaned up
*
* @internal
*/
public function removeReference()
{
return $this->_index->removeReference();
}
}