Difference between revisions of "Index Module"
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| − | This module is introduced with BaseX {{Mark|Version 7.1}}. It | + | This module is introduced with BaseX {{Mark|Version 7.1}}. It provides [[Querying#Functions|XQuery functions]] for displaying information stored in the database index structures. All functions are introduced with the {{Mono|index:}} prefix, which is linked to the {{Mono|http://www.basex.org/modules/index}} namespace. |
==index:facets== | ==index:facets== | ||
Revision as of 00:37, 16 January 2012
This module is introduced with BaseX Template:Mark. It provides XQuery functions for displaying information stored in the database index structures. All functions are introduced with the index: prefix, which is linked to the http://www.basex.org/modules/index namespace.
index:facets
| Signatures | index:facets($db as item()) as xs:stringindex:facets($db as item(), $type as xs:string) as xs:string
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| Summary | Returns information about possible facets and facet values on a database in document structure format. $db may either be an xs:string, denoting the database name, or a node stored in the database.If $type is specified as flat, the function returns this information in a flat summarized version.
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| Errors | BASX0001 is raised if the path index is not available. BASX0002 is raised if $db is a node that is not stored in a database.BASX0003 is raised if the addressed database $db cannot be opened. |
| Examples |
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index:texts
| Signatures | index:texts($db as item()) as element(value)*index:texts($db as item(), $prefix as xs:string) as element(value)*
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| Summary | Returns all strings stored in the text index, along with their number of occurrence. $db may either be an xs:string, denoting the database name, or a node stored in the database.If $prefix is specified, the returned nodes will be refined to the strings starting with that prefix.
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| Errors | BASX0001 is raised if the text index is not available. BASX0002 is raised if $db is a node that is not stored in a database.BASX0003 is raised if the addressed database $db cannot be opened. |
index:attributes
| Signatures | index:attributes($db as item()) as element(value)*index:attributes($db as item(), $prefix as xs:string) as element(value)*
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| Summary | Returns all strings stored in the attribute index, along with their number of occurrence. $db may either be an xs:string, denoting the database name, or a node stored in the database.If $prefix is specified, the returned nodes will be refined to the strings starting with that prefix.
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| Errors | BASX0001 is raised if the attribute index is not available. BASX0002 is raised if $db is a node that is not stored in a database.BASX0003 is raised if the addressed database $db cannot be opened. |