Package com.saxonica.ee.optim
package com.saxonica.ee.optim
This package contains classes used to support optimized expressions and
instructions that are specific to Saxon-EE, and that don't fit
conveniently into a more specialized category (such as streaming). They include
the Saxon-EE optimiser; the code to implement multithreading in xsl:for-each in XSLT,
and the code to perform optimized evaluation of general comparisons.
None of these classes will be used by typical user applications.
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ClassesClassDescriptionThis class is responsible for identifying and extracting common subexpressions within an expression.This class provides an implementation of the GeneralComparison "=" operator, which deals efficiently with comparing two sequences.Elaborator for a general comparison expression such as (A = B).This class is responsible for extracting global variables from subexpressions within a function or templateAn IndexedFilterExpression contains a base expression and a filter predicate.A representation of a (sequence) value that allows the construction of one or more indexes to provide rapid access to the items in the sequence.A MultiIndex provides fast access to the items in a sequence.Iterator over a subset of the items in this IndexedValue, identified by an IntSet holding the positions of the items in the selected subset (zero-based)This class performs a number of optimizations that are specific to the Saxon-EE product.This class performs a quick parse of commonly encountered XPath expressions that conform to common syntactic patterns.A sequence that is held in a form that permits rapid searching, typically by use of indexes.A version of StaticQueryContext for Saxon-EE, that extends the capability by allowing compilation of library modules.An optimized Choose expression in which all the branches are tests of the same expression for equality with some value.Data structure used for holding details of a switch expressionElaborator for a "Switch" expression (typically an
xsl:choosethat tests one expression against a list of constants: not exactly equivalent to an XQuery 3.1 switch expression).Saxon-EE version of XQueryExpression.