lux.functions
Class Count

java.lang.Object
  net.sf.saxon.lib.ExtensionFunctionDefinition
      lux.functions.SearchBase
          lux.functions.Count

All Implemented Interfaces:

Serializable

public class Count
extends SearchBase

function lux:count($query as item(), $hints as xs:int?) as xs:integer

This function counts the number of results of a search. It is faster and uses less memory than calling fn:count() on the search results themselves because it does not need to load the result documents in memory. See Search for an explanation of the supported $query formats.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class lux.functions.SearchBase

SearchBase.SearchCall

Constructor Summary

Count()

Method Summary

net.sf.saxon.om.StructuredQName	getFunctionQName()
net.sf.saxon.value.SequenceType	getResultType(net.sf.saxon.value.SequenceType[] suppliedArgumentTypes)
net.sf.saxon.tree.iter.UnfailingIterator<net.sf.saxon.value.Int64Value>	iterate(org.apache.lucene.search.Query query, Evaluator saxon, long facts, String sortCriteria, int start)
boolean	trustResultType()

Methods inherited from class lux.functions.SearchBase

getArgumentTypes, getEvaluator, getMaximumNumberOfArguments, getMinimumNumberOfArguments, makeCallExpression

Methods inherited from class net.sf.saxon.lib.ExtensionFunctionDefinition

dependsOnFocus, hasSideEffects

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Count

public Count()

Method Detail

getFunctionQName

public net.sf.saxon.om.StructuredQName getFunctionQName()

Specified by:

getFunctionQName in class net.sf.saxon.lib.ExtensionFunctionDefinition

getResultType

public net.sf.saxon.value.SequenceType getResultType(net.sf.saxon.value.SequenceType[] suppliedArgumentTypes)

Specified by:

getResultType in class net.sf.saxon.lib.ExtensionFunctionDefinition

trustResultType

public boolean trustResultType()

Overrides:

trustResultType in class net.sf.saxon.lib.ExtensionFunctionDefinition

iterate

public net.sf.saxon.tree.iter.UnfailingIterator<net.sf.saxon.value.Int64Value> iterate(org.apache.lucene.search.Query query,
                                                                                       Evaluator saxon,
                                                                                       long facts,
                                                                                       String sortCriteria,
                                                                                       int start)
                                                                                throws net.sf.saxon.trans.XPathException

Specified by:

iterate in class SearchBase

Throws:

net.sf.saxon.trans.XPathException