Package net.sf.saxon.pattern

Class JNodePattern

java.lang.Object

net.sf.saxon.expr.Expression

net.sf.saxon.expr.PseudoExpression

net.sf.saxon.pattern.Pattern

net.sf.saxon.pattern.JNodePattern

All Implemented Interfaces:

ExportAgent, Locatable, IdentityComparable, Traceable

public class JNodePattern
extends Pattern

Field Summary

Fields inherited from class net.sf.saxon.expr.Expression

EFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, ITEM_FEED_METHOD, ITERATE_METHOD, MAX_COST, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, PROCESS_METHOD, staticProperties, UPDATE_METHOD, WATCH_METHOD

Constructor Summary

Constructors

Constructor	Description
JNodePattern(AtomicValue selector, SequenceType contentType)

Method Summary

Modifier and Type	Method	Description
Pattern	copy(RebindingMap rebindings)	Copy an expression.
void	export(ExpressionPresenter presenter)	Diagnostic print of expression structure.
double	getDefaultPriority()	Determine the default priority to use if this pattern appears as a match pattern for a template with no explicit priority attribute.
ItemType	getItemType()	Get an ItemType that all the items matching this pattern must satisfy
UType	getUType()	Get a UType indicating which kinds of items this Pattern can match.
boolean	matches(Item item, XPathContext context)	Determine whether this Pattern matches the given item.

Methods inherited from class net.sf.saxon.pattern.Pattern

allocateSlots, bindCurrent, convertToTypedPattern, effectiveBooleanValue, getDependencies, getElaborator, getFingerprint, getHostLanguage, getOriginalText, handleDynamicError, isLiftable, isMotionless, isRecoverable, make, matchesBeneathAnchor, matchesCurrentGroup, matchesItem, optimize, patternContainsVariable, reconstruct, replaceCurrent, selectNodes, setOriginalText, setPriority, setRecoverable, simplify, toPattern, toShortString, toString, typeCheck

Methods inherited from class net.sf.saxon.expr.PseudoExpression

computeCardinality, evaluateAsString, evaluateItem, getImplementationMethod, iterate, process

Methods inherited from class net.sf.saxon.expr.Expression

adoptChildExpression, allowExtractingCommonSubexpressions, checkedOperands, checkForUpdatingSubexpressions, checkPermittedContents, computeDependencies, computeHashCode, computeSpecialProperties, computeStaticProperties, dispatchTailCall, dynamicError, equals, explain, getCardinality, getConfiguration, getCost, getEvaluationMethod, getExpressionName, getExtraProperty, getIntrinsicDependencies, getLocalRetainedStaticContext, getLocation, getNetCost, getObjectName, getPackageData, getParentExpression, getProperties, getProperty, getRetainedStaticContext, getScopingExpression, getSlotsUsed, getSpecialProperties, getStaticBaseURI, getStaticBaseURIString, getStaticType, getStaticUType, getStreamerName, getTracingTag, hasCompatibleStaticContext, hashCode, hasSpecialProperty, hasVariableBinding, identityHashCode, implementsStaticTypeCheck, isCallOn, isEqual, isIdentical, isInstruction, isMultiThreaded, isStaticPropertiesKnown, isSubtreeExpression, isUpdatingExpression, isVacuousExpression, makeElaborator, markTailFunctionCalls, operandList, operands, operandSparseList, optimizeChildren, prepareForStreaming, resetLocalStaticProperties, restoreParentPointers, setEvaluationMethod, setExtraProperty, setFiltered, setFlattened, setLocation, setParentExpression, setRetainedStaticContext, setRetainedStaticContextLocally, setRetainedStaticContextThoroughly, setStaticProperty, simplifyChildren, staticTypeCheck, supportsLazyEvaluation, suppressValidation, typeCheckChildren, typeError, unordered, verifyParentPointers, warning, withLocation

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.sf.saxon.trace.Traceable

gatherProperties

Constructor Details

JNodePattern

public JNodePattern(AtomicValue selector,
 SequenceType contentType)

Method Details

matches

public boolean matches(Item item,
 XPathContext context)
                throws XPathException

Description copied from class: Pattern

Determine whether this Pattern matches the given item. This should be called via matchesItem() to get the XSLT-defined error handling behaviour.

The method, where required, sets current() to the node being tested.

Specified by:

matches in class Pattern

Parameters:

item - The item to be tested against the Pattern

context - The dynamic context.

Returns:

true if the node matches the Pattern, false otherwise

Throws:

XPathException - if an error occurs while matching the pattern

getUType

public UType getUType()

Description copied from class: Pattern

Get a UType indicating which kinds of items this Pattern can match.

Specified by:

getUType in class Pattern

Returns:

a UType indicating all the primitive types of item that the pattern can match.

getItemType

public ItemType getItemType()

Description copied from class: Pattern

Get an ItemType that all the items matching this pattern must satisfy

Specified by:

getItemType in class Pattern

Returns:

an ItemType, as specific as possible, which all the matching items satisfy

export

public void export(ExpressionPresenter presenter)
            throws XPathException

Description copied from class: Expression

Diagnostic print of expression structure. The abstract expression tree is written to the supplied output destination.

Specified by:

export in interface ExportAgent

Specified by:

export in class Pattern

Parameters:

presenter - the expression presenter used to display the structure

Throws:

XPathException - if the export fails, for example if an expression is found that won't work in the target environment.

getDefaultPriority

public double getDefaultPriority()

Description copied from class: Pattern

Determine the default priority to use if this pattern appears as a match pattern for a template with no explicit priority attribute. Note that the default priority of a pattern

Overrides:

getDefaultPriority in class Pattern

Returns:

the default priority for the pattern

copy

public Pattern copy(RebindingMap rebindings)

Description copied from class: Expression

Copy an expression. This makes a deep copy.

Specified by:

copy in class Pattern

Parameters:

rebindings - a mutable list of (old binding, new binding) pairs that is used to update the bindings held in any local variable references that are copied.

Returns:

the copy of the original expression