Search/Lucene/Index/SegmentWriter.php

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Category
Zend  
Copyright
Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)  
License
New BSD License  
Package
Zend_Search_Lucene  
Subpackage
Index  
Version
$Id$  

\Zend_Search_Lucene_Index_SegmentWriter
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Package: Zend_Search_Lucene\Index
Children
\Zend_Search_Lucene_Index_SegmentWriter_DocumentWriter
\Zend_Search_Lucene_Index_SegmentWriter_StreamWriter
Category
Zend  
Copyright
Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)  
License
New BSD License  

Properties

>VPropertyprotected\Zend_Search_Lucene_Storage_Directory $_directory
File system adapter.
Details
Type
\Zend_Search_Lucene_Storage_Directory
>VPropertyprotectedinteger $_docCount = 0
Number of docs in a segment
Default value0Details
Type
integer
>VPropertyprotected\Zend_Search_Lucene_Storage_File $_fdtFile = null
'.fdt' file - Stored Fields, the field data.
Default valuenullDetails
Type
\Zend_Search_Lucene_Storage_File
>VPropertyprotected\Zend_Search_Lucene_Storage_File $_fdxFile = null
'.fdx' file - Stored Fields, the field index.
Default valuenullDetails
Type
\Zend_Search_Lucene_Storage_File
>VPropertyprotectedarray $_fields = array()
Segment fields. Array of Zend_Search_Lucene_Index_FieldInfo objects for this segment
Default valuearray()Details
Type
array
>VPropertyprotected\unknown_type $_files = array()
List of the index files.
Used for automatic compound file generation
Default valuearray()Details
Type
\unknown_type
>VPropertyprivate\Zend_Search_Lucene_Storage_File $_frqFile = null
Frequencies file
Default valuenullDetails
Type
\Zend_Search_Lucene_Storage_File
>VPropertyprivateinteger $_lastIndexPosition
Last term dictionary file position
Details
Type
integer
>VPropertyprotectedstring $_name
Segment name
Details
Type
string
>VPropertyprotectedarray $_norms = array()
Normalization factors.
An array fieldName => normVector normVector is a binary string. Each byte corresponds to an indexed document in a segment and encodes normalization factor (float value, encoded by Zend_Search_Lucene_Search_Similarity::encodeNorm())
Default valuearray()Details
Type
array
>VPropertyprivate\Zend_Search_Lucene_Index_Term $_prevIndexTerm
Last saved index term
Details
Type
\Zend_Search_Lucene_Index_Term
>VPropertyprivate\Zend_Search_Lucene_Index_TermInfo $_prevIndexTermInfo
Last saved index term info
Details
Type
\Zend_Search_Lucene_Index_TermInfo
>VPropertyprivate\Zend_Search_Lucene_Index_Term $_prevTerm
Last saved term
Details
Type
\Zend_Search_Lucene_Index_Term
>VPropertyprivate\Zend_Search_Lucene_Index_TermInfo $_prevTermInfo
Last saved term info
Details
Type
\Zend_Search_Lucene_Index_TermInfo
>VPropertyprivate\Zend_Search_Lucene_Storage_File $_prxFile = null
Positions file
Default valuenullDetails
Type
\Zend_Search_Lucene_Storage_File
>VPropertyprivateinteger $_termCount
Number of written terms
Details
Type
integer
>VPropertyprivate\Zend_Search_Lucene_Storage_File $_tiiFile = null
Term Dictionary index file
Default valuenullDetails
Type
\Zend_Search_Lucene_Storage_File
>VPropertyprivate\Zend_Search_Lucene_Storage_File $_tisFile = null
Term Dictionary file
Default valuenullDetails
Type
\Zend_Search_Lucene_Storage_File
>VPropertypublicinteger $indexInterval = 128
static
Expert: The fraction of terms in the "dictionary" which should be stored in RAM. Smaller values use more memory, but make searching slightly faster, while larger values use less memory and make searching slightly slower. Searching is typically not dominated by dictionary lookup, so tweaking this is rarely useful.
Default value128Details
Type
integer
>VPropertypublicinteger $maxSkipLevels = 0
static
Expert: The maximum number of skip levels. Smaller values result in slightly smaller indexes, but slower skipping in big posting lists.
0 indicates that we don't use skip data Note: not used in current implementation
Default value0Details
Type
integer
>VPropertypublicinteger $skipInterval = 2147483647
static
Expert: The fraction of TermDocs entries stored in skip tables.
Larger values result in smaller indexes, greater acceleration, but fewer accelerable cases, while smaller values result in bigger indexes, less acceleration and more accelerable cases. More detailed experiments would be useful here. 0x7FFFFFFF indicates that we don't use skip data Note: not used in current implementation
Default value2147483647Details
Type
integer

Methods

methodpublic__construct(\Zend_Search_Lucene_Storage_Directory $directory, string $name) : void

Object constructor.

Parameters
NameTypeDescription
$directory\Zend_Search_Lucene_Storage_Directory
$namestring
methodprotected_dumpFNM() : void

Dump Field Info (.fnm) segment file

methodprotected_dumpTermDictEntry(\Zend_Search_Lucene_Storage_File $dicFile, \Zend_Search_Lucene_Index_Term $prevTerm, \Zend_Search_Lucene_Index_Term $term, \Zend_Search_Lucene_Index_TermInfo $prevTermInfo, \Zend_Search_Lucene_Index_TermInfo $termInfo) : void

Dump Term Dictionary segment file entry.

Used to write entry to .tis or .tii files
Parameters
NameTypeDescription
$dicFile\Zend_Search_Lucene_Storage_File
$prevTerm\Zend_Search_Lucene_Index_Term
$term\Zend_Search_Lucene_Index_Term
$prevTermInfo\Zend_Search_Lucene_Index_TermInfo
$termInfo\Zend_Search_Lucene_Index_TermInfo
methodprotected_generateCFS() : void

Generate compound index file

methodpublicaddField(\Zend_Search_Lucene_Field $field) : integer

Add field to the segment

Returns actual field number
Parameters
NameTypeDescription
$field\Zend_Search_Lucene_Field
Returns
TypeDescription
integer
methodpublicaddFieldInfo(\Zend_Search_Lucene_Index_FieldInfo $fieldInfo) : integer

Add fieldInfo to the segment

Returns actual field number
Parameters
NameTypeDescription
$fieldInfo\Zend_Search_Lucene_Index_FieldInfo
Returns
TypeDescription
integer
methodpublicaddStoredFields(array $storedFields) : void

Add stored fields information

Parameters
NameTypeDescription
$storedFieldsarray

array of Zend_Search_Lucene_Field objects

methodpublicaddTerm(\Zend_Search_Lucene_Index_Term $termEntry, array $termDocs) : void

Add term

Term positions is an array( docId => array(pos1, pos2, pos3, ...), ... )
Parameters
NameTypeDescription
$termEntry\Zend_Search_Lucene_Index_Term
$termDocsarray
methodpublicclose() : \Zend_Search_Lucene_Index_SegmentInfo
abstract

Close segment, write it to disk and return segment info

Returns
TypeDescription
\Zend_Search_Lucene_Index_SegmentInfo
methodpubliccloseDictionaryFiles() : void

Close dictionary

methodpubliccount() : integer

Returns the total number of documents in this segment.

Returns
TypeDescription
integer
methodpublicgetFieldInfos() : array

Returns array of FieldInfo objects.

Returns
TypeDescription
array
methodpublicgetName() : string

Return segment name

Returns
TypeDescription
string
methodpublicinitializeDictionaryFiles() : void

Create dicrionary, frequency and positions files and write necessary headers

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