Difference between revisions of "Index Module"
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{| width='100%' | {| width='100%' | ||
|- valign="top" | |- valign="top" | ||
| − | | width='120' | ''' | + | | width='120' | '''Signature''' |
|<pre>index:facets( | |<pre>index:facets( | ||
| − | $db as xs:string | + | $db as xs:string, |
$type as xs:string := () | $type as xs:string := () | ||
) as xs:string</pre> | ) as xs:string</pre> | ||
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| − | | width='120' | ''' | + | | width='120' | '''Signature''' |
|<pre>index:texts( | |<pre>index:texts( | ||
| − | $db as xs:string | + | $db as xs:string, |
| − | $prefix as xs:string | + | $prefix as xs:string := (), |
| − | $ascending as xs:boolean := () | + | $ascending as xs:boolean? := false() |
) as element(value)*</pre> | ) as element(value)*</pre> | ||
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{| width='100%' | {| width='100%' | ||
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|<pre>index:attributes( | |<pre>index:attributes( | ||
| − | $db as xs:string | + | $db as xs:string, |
| − | $prefix as xs:string | + | $prefix as xs:string := (), |
| − | $ascending as xs:boolean := () | + | $ascending as xs:boolean? := false() |
) as element(value)*</pre> | ) as element(value)*</pre> | ||
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|<pre>index:tokens( | |<pre>index:tokens( | ||
$db as xs:string | $db as xs:string | ||
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|<pre>index:element-names( | |<pre>index:element-names( | ||
$db as xs:string | $db as xs:string | ||
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|<pre>index:attribute-names( | |<pre>index:attribute-names( | ||
$db as xs:string | $db as xs:string | ||
Latest revision as of 17:13, 9 March 2023
This XQuery Module provides functions for displaying information stored in the database index structures.
For functions that use the indexes to return nodes see Value Indexes in the Database Module and ft:search in the Full-Text Module.
Contents
Conventions[edit]
All functions and errors in this module are assigned to the http://basex.org/modules/index namespace, which is statically bound to the index prefix.
Functions[edit]
index:facets[edit]
| Signature | index:facets( $db as xs:string, $type as xs:string := () ) as xs:string |
| Summary | Returns information about all facets and facet values of the database $db in document structure format.If $type is specified as flat, the function returns this information in a flat summarized version. The returned data is derived from the Path Index.
|
| Errors | db:get: The addressed database does not exist or could not be opened.
|
| Examples |
|
index:texts[edit]
| Signature | index:texts( $db as xs:string, $prefix as xs:string := (), $ascending as xs:boolean? := false() ) as element(value)* |
| Summary | Returns all strings stored in the Text Index of the database $db, along with their number of occurrences.If $prefix is specified, the returned entries will be refined to the ones starting with that prefix.If $prefix and $ascending are specified, all nodes will be returned after or before the specified entry.
|
| Errors | db:get: The addressed database does not exist or could not be opened.db:no-index: the index is not available.
|
index:attributes[edit]
| Signature | index:attributes( $db as xs:string, $prefix as xs:string := (), $ascending as xs:boolean? := false() ) as element(value)* |
| Summary | Returns all strings stored in the Attribute Index of the database $db, along with their number of occurrences.If $prefix is specified, the returned entries will be refined to the ones starting with that prefix.If $prefix and $ascending are specified, all nodes will be returned after or before the specified start entry.
|
| Errors | db:get: The addressed database does not exist or could not be opened.db:no-index: the index is not available.
|
index:tokens[edit]
| Signature | index:tokens( $db as xs:string ) as element(value)* |
| Summary | Returns all strings stored in the Token Index of the database $db, along with their number of occurrences.
|
| Errors | db:get: The addressed database does not exist or could not be opened.db:no-index: the index is not available.
|
index:element-names[edit]
| Signature | index:element-names( $db as xs:string ) as element(value)* |
| Summary | Returns all element names stored in the Name Index of the database $db, along with their number of occurrences.
|
| Errors | db:get: The addressed database does not exist or could not be opened.
|
index:attribute-names[edit]
| Signature | index:attribute-names( $db as xs:string ) as element(value)* |
| Summary | Returns all attribute names stored in the Name Index of the database $db, along with their number of occurrences.
|
| Errors | db:get: The addressed database does not exist or could not be opened.
|
Changelog[edit]
- Version 8.4
- Added:
index:tokens
- Version 7.7
- Updated: the functions no longer accept Database Nodes as reference. Instead, the name of a database must now be specified.
- Version 7.3
- Updated:
index:texts,index:attributes: signature with three arguments added.
The module was introduced with Version 7.1.
