Class cSearchIndex

CONTENIDO API - Search Index Object

This object creates an index of an article

Create object with $oIndex = new SearchIndex($db); # where $db is the global CONTENIDO database object. Start indexing with $oIndex->start($idart, $aContent); where $aContent is the complete content of an article specified by its content types. It looks like Array ( [CMS_HTMLHEAD] => Array ( [1] => Herzlich Willkommen... [2] => ...auf Ihrer Website! ) [CMS_HTML] => Array ( [1] => Die Inhalte auf dieser Website ...

The index for keyword 'willkommen' would look like '&12=1(CMS_HTMLHEAD-1)' which means the keyword 'willkommen' occurs 1 times in article with articleId 12 and content type CMS_HTMLHEAD[1].

TODO: The basic idea of the indexing process is to take the complete content of an article and to generate normalized index terms from the content and to store a specific index structure in the relation 'con_keywords'. To take the complete content is not very flexible. It would be better to differentiate by specific content types or by any content. The &, =, () and - seperated string is not easy to parse to compute the search result set. It would be a better idea (and a lot of work) to extend the relation 'con_keywords' to store keywords by articleId (or content source identifier) and content type. The functions removeSpecialChars, setStopwords, setContentTypes and setCmsOptions should be sourced out into a new helper-class. Keep in mind that class Search and SearchResult uses an instance of object Index.

cSearchBaseAbstract

cSearchIndex

Package: Core\Frontend\Search
Copyright: four for business AG <www.4fb.de>
License: http://www.contenido.org/license/LIZENZ.txt
Author: Willi Man
Located at classes/search/class.search.index.php

Methods summary
`public`	# `__construct( cDb $db = NULL )` Constructor, set object properties Constructor, set object properties Parameters `$db` CONTENIDO Database object Overrides `cSearchBaseAbstract::__construct()`
`public`	# `start( integer $idart, array $aContent, string $place = 'auto', array $cms_options = array(), array $aStopwords = array() )` Start indexing the article. Start indexing the article. Parameters `$idart` Article Id `$aContent` The complete content of an article specified by its content types. It looks like Array ( [CMS_HTMLHEAD] => Array ( [1] => Herzlich Willkommen... [2] => ...auf Ihrer Website! ) [CMS_HTML] => Array ( [1] => Die Inhalte auf dieser Website ... `$place` The field where to store the index information in db. `$cms_options` One can specify explicitly cms types which should not be indexed. `$aStopwords` Array with words which should not be indexed.
`public`	# `createKeywords( )` for each cms-type create index structure. it looks like Array ( [die] => CMS_HTML-1 [inhalte] => CMS_HTML-1 [auf] => CMS_HTML-1 CMS_HTMLHEAD-2 [dieser] => CMS_HTML-1 [website] => CMS_HTML-1 CMS_HTML-1 CMS_HTMLHEAD-2 ) for each cms-type create index structure. it looks like Array ( [die] => CMS_HTML-1 [inhalte] => CMS_HTML-1 [auf] => CMS_HTML-1 CMS_HTMLHEAD-2 [dieser] => CMS_HTML-1 [website] => CMS_HTML-1 CMS_HTML-1 CMS_HTMLHEAD-2 )
`public`	# `saveKeywords( )` generate index_string from index structure and save keywords The index_string looks like "&12=2(CMS_HTMLHEAD-1,CMS_HTML-1)" generate index_string from index structure and save keywords The index_string looks like "&12=2(CMS_HTMLHEAD-1,CMS_HTML-1)"
`public`	# `deleteKeywords( )` if keywords don't occur in the article anymore, update index_string and delete keyword if necessary if keywords don't occur in the article anymore, update index_string and delete keyword if necessary
`public`	# `getKeywords( )` get the keywords of an article get the keywords of an article
`public mixed`	# `removeSpecialChars( string $key )` remove special characters from index term remove special characters from index term Parameters `$key` Keyword Returns mixed
`public string`	# `addSpecialUmlauts( string $key )` Parameters `$key` Keyword Returns string
`public`	# `setStopwords( array $aStopwords )` set the array of stopwords which should not be indexed set the array of stopwords which should not be indexed Parameters `$aStopwords`
`public`	# `setContentTypes( )` set the cms types set the cms types
`public`	# `setCmsOptions( mixed $cms_options )` set the cms_options array of cms types which should be treated special set the cms_options array of cms types which should be treated special Parameters `$cms_options`
`public boolean`	# `checkCmsType( string $idtype )` Check if the requested content type should be indexed (false) or not (true) Check if the requested content type should be indexed (false) or not (true) Parameters `$idtype` Returns boolean
`public array`	# `getCmsType( )` Returns array the _cmsType property
`public array`	# `getCmsTypeSuffix( )` Returns array the _cmsTypeSuffix property

Methods inherited from cSearchBaseAbstract
`_debug()`

Properties summary
`protected array`	`$_keycode` the content of the cms-types of an article the content of the cms-types of an article	# `array()`
`protected array`	`$_keywords` the list of keywords of an article the list of keywords of an article	# `array()`
`protected array`	`$_stopwords` the words, which should not be indexed the words, which should not be indexed	# `array()`
`protected array`	`$_keywordsOld` the keywords of an article stored in the DB the keywords of an article stored in the DB	# `array()`
`protected array`	`$_keywordsDel` the keywords to be deleted the keywords to be deleted	# `array()`
`protected string`	`$_place` 'auto' or 'self' The field 'auto' in table con_keywords is used for automatic indexing. The value is a string like "&12=2(CMS_HTMLHEAD-1,CMS_HTML-1)", which means a keyword occurs 2 times in article with $idart 12 and can be found in CMS_HTMLHEAD[1] and CMS_HTML[1]. The field 'self' can be used in the article properties to index the article manually. 'auto' or 'self' The field 'auto' in table con_keywords is used for automatic indexing. The value is a string like "&12=2(CMS_HTMLHEAD-1,CMS_HTML-1)", which means a keyword occurs 2 times in article with $idart 12 and can be found in CMS_HTMLHEAD[1] and CMS_HTML[1]. The field 'self' can be used in the article properties to index the article manually.	#
`protected array`	`$_cmsOptions` array of cms types array of cms types	# `array()`
`protected array`	`$_cmsType` array of all available cms types array of all available cms types htmlhead - HTML Headline html - HTML Text head - Headline (no HTML) text - Text (no HTML) img - Upload id of the element imgdescr - Image description link - Link (URL) linktarget - Linktarget (_self, _blank, _top ...) linkdescr - Linkdescription swf - Upload id of the element etc.	# `array()`
`protected array`	`$_cmsTypeSuffix` the suffix of all available cms types the suffix of all available cms types	# `array()`
`protected integer`	`$idart`	#

Properties inherited from cSearchBaseAbstract
`$cfg, $client, $lang, $oDB`

Packages

Classes

Class cSearchIndex

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