Difference between revisions of "Index Module"
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Revision as of 21:22, 27 May 2012
This XQuery Module provides functions for displaying information stored in the database index structures.
Contents
Conventions
All functions in this module are assigned to the http://basex.org/modules/index
namespace, which is statically bound to the index
prefix.
All errors are assigned to the http://basex.org/errors
namespace, which is statically bound to the bxerr
prefix.
Functions
index:facets
Signatures | index:facets($db as item()) as xs:string index:facets($db as item(), $type as xs:string) as xs:string
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Summary | Returns information about possible facets and facet values of the database node $db in document structure format.If $type is specified as flat , the function returns this information in a flat summarized version.
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Examples |
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index:texts
Template:Mark: Signature with three arguments added.
Signatures | index:texts($db as item()) as element(value)* index:texts($db as item(), $prefix as xs:string) as element(value)* index:texts($db as item(), $start as xs:string, $ascending as xs:boolean) as element(value)*
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Summary | Returns all strings stored in the text index of the database node $db , along with their number of occurrences.If $prefix is specified, the returned nodes will be refined to the strings starting with that prefix.If $start and $ascending are specified, all nodes will be returned after or before the specified start text.
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Errors | BXDB0004 : the text index is not available.
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index:attributes
Template:Mark: Signature with three arguments added.
Signatures | index:attributes($db as item()) as element(value)* index:attributes($db as item(), $prefix as xs:string) as element(value)* index:attributes($db as item(), $start as xs:string, $ascending as xs:boolean) as element(value)*
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Summary | Returns all strings stored in the attribute index of the database node $db , along with their number of occurrences.If $prefix is specified, the returned nodes will be refined to the strings starting with that prefix.If $start and $ascending are specified, all nodes will be returned after or before the specified start text.
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Errors | BXDB0004 : the attribute index is not available.
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index:element-names
Signatures | index:element-names($db as item()) as element(value)*
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Summary | Returns all element names stored in the index of the database node $db , along with their number of occurrences.
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index:attribute-names
Signatures | index:attribute-names($db as item()) as element(value)*
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Summary | Returns all attribute names stored in the index of the database node $db , along with their number of occurrences.
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Changelog
The module was introduced with Version 7.1.