com.saxonica.ee.pattern

Class GeneralNodePatternADJ

java.lang.Object

com.saxonica.ee.pattern.Adjunct

com.saxonica.ee.pattern.PatternADJ

com.saxonica.ee.pattern.GeneralNodePatternADJ

public class GeneralNodePatternADJ
extends PatternADJ

Field Summary

Fields inherited from class com.saxonica.ee.pattern.PatternADJ

pattern

Constructor Summary

Constructors

Constructor and Description
GeneralNodePatternADJ(Pattern p)

Method Summary

Methods

Modifier and Type	Method and Description
Pattern	applyAxis(byte axis) Convert a pattern to apply to nodes along a given axis.
Set<Expression>	getPreconditions() Find useful preconditions for this pattern to be true
Pattern	optimizeForName(int i) Optimize a pattern with respect to a named node (element or attribute).
Pattern	optimizeForType(int i) Optimize a pattern with respect to a typed node.

Methods inherited from class com.saxonica.ee.pattern.PatternADJ

copyLocationInfo, evaluateAgainstBoolean, export, getPatternPreconditions, getPreconditions, getRetainedStaticContext, optimizePattern, optimizePattern, unify, unifyingBindings

Methods inherited from class com.saxonica.ee.pattern.Adjunct

getExpressionAdjunct, getNodeTestAdjunct, getPatternAdjunct, index, processRewrites

Methods inherited from class java.lang.Object

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

Constructor Detail

GeneralNodePatternADJ

public GeneralNodePatternADJ(Pattern p)

Method Detail

optimizeForName

public Pattern optimizeForName(int i)

Description copied from class: PatternADJ

Optimize a pattern with respect to a named node (element or attribute). This is usually carried out on the base pattern, to determine if it will match the named node to be matched.

Overrides:

optimizeForName in class PatternADJ

Parameters:

i - the fingerprint of the name of the node to be matched.

Returns:

null if it isn't for this named node, otherwise the pattern itself.

optimizeForType

public Pattern optimizeForType(int i)

Description copied from class: PatternADJ

Optimize a pattern with respect to a typed node. This is usually carried out on the base pattern, to determine if it will match the typed node to be matched.

Overrides:

optimizeForType in class PatternADJ

Parameters:

i - the type of the node to be matched.

Returns:

null if it isn't for this type of node, otherwise the pattern itself.

applyAxis

public Pattern applyAxis(byte axis)

Description copied from class: PatternADJ

Convert a pattern to apply to nodes along a given axis. If appropriate this normally returns a BooleanExpressionPattern containing a suitable FilterExpression

Overrides:

applyAxis in class PatternADJ

Parameters:

axis - The axis to mode this pattern to

Returns:

a pattern which matches the original pattern alonng a given axis.

getPreconditions

public Set<Expression> getPreconditions()

Find useful preconditions for this pattern to be true

Returns:

a set of expressions that must be satisfied for this pattern to match