Package net.sf.saxon.pattern
Class NodeTestPattern
java.lang.Object
net.sf.saxon.expr.Expression
net.sf.saxon.expr.PseudoExpression
net.sf.saxon.pattern.Pattern
net.sf.saxon.pattern.NodeTestPattern
- All Implemented Interfaces:
ExportAgent
,Locatable
,IdentityComparable
,Traceable
A NodeTestPattern is a pattern that consists simply of a NodeTest
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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, UNBOUNDED_LOWER, UNBOUNDED_UPPER, UPDATE_METHOD, WATCH_METHOD
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Constructor Summary
ConstructorsConstructorDescriptionNodeTestPattern
(NodeTest test) Create an NodeTestPattern that matches all items of a given type -
Method Summary
Modifier and TypeMethodDescriptionprotected int
Hashcode supporting equals()Convert the pattern to a typed pattern, in which an element name is treated as schema-element(N)copy
(RebindingMap rebindings) Copy a pattern.boolean
Determine whether this pattern is the same as another patternvoid
export
(ExpressionPresenter presenter) Diagnostic print of expression structure.int
Determine the name fingerprint of nodes to which this pattern applies.Get a NodeTest that all the nodes matching this pattern must satisfygetUType()
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 Node.Display the pattern for diagnosticsProduce a short string identifying the expression for use in error messagesMethods inherited from class net.sf.saxon.pattern.Pattern
allocateSlots, bindCurrent, effectiveBooleanValue, getDefaultPriority, getDependencies, getElaborator, getHostLanguage, getOriginalText, handleDynamicError, isLiftable, isMotionless, isRecoverable, make, matchesBeneathAnchor, matchesCurrentGroup, matchesItem, optimize, patternContainsVariable, replaceCurrent, selectNodes, setOriginalText, setPriority, setRecoverable, simplify, toPattern, 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
addToPathMap, adoptChildExpression, allowExtractingCommonSubexpressions, checkedOperands, checkForUpdatingSubexpressions, checkPermittedContents, computeDependencies, computeSpecialProperties, computeStaticProperties, dispatchTailCall, dynamicError, explain, getCardinality, getConfiguration, getCost, getEvaluationMethod, getExpressionName, getExtraProperty, getIntegerBounds, 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, 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
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Constructor Details
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NodeTestPattern
Create an NodeTestPattern that matches all items of a given type- Parameters:
test
- the type that the items must satisfy for the pattern to match
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Method Details
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matches
Determine whether this Pattern matches the given Node. This is the main external interface for matching patterns: it sets current() to the node being tested -
getItemType
Get a NodeTest that all the nodes matching this pattern must satisfy- Specified by:
getItemType
in classPattern
- Returns:
- an ItemType, as specific as possible, which all the matching items satisfy
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getUType
Get a UType indicating which kinds of items this Pattern can match. -
getFingerprint
public int getFingerprint()Determine the name fingerprint of nodes to which this pattern applies. Used for optimisation.- Overrides:
getFingerprint
in classPattern
- Returns:
- A fingerprint that the nodes must match, or -1 if it can match multiple fingerprints
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reconstruct
Display the pattern for diagnostics- Overrides:
reconstruct
in classPattern
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toShortString
Description copied from class:Expression
Produce a short string identifying the expression for use in error messages- Overrides:
toShortString
in classPattern
- Returns:
- a short string, sufficient to identify the expression
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equals
Determine whether this pattern is the same as another pattern- Overrides:
equals
in classExpression
- Parameters:
other
- the other object- Returns:
- true if the other operand is an expression and if it can be determined that the two expressions are equivalent, in the sense that they will always return the same result.
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computeHashCode
protected int computeHashCode()Hashcode supporting equals()- Overrides:
computeHashCode
in classExpression
- Returns:
- a computed hash code
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convertToTypedPattern
Convert the pattern to a typed pattern, in which an element name is treated as schema-element(N)- Overrides:
convertToTypedPattern
in classPattern
- Parameters:
val
- either "strict" or "lax" depending on the value of xsl:mode/@typed- Returns:
- either the original pattern unchanged, or a new pattern as the result of the conversion
- Throws:
XPathException
- if the pattern cannot be converted
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export
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 interfaceExportAgent
- Specified by:
export
in classPattern
- 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.
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copy
Copy a pattern. This makes a deep copy. -
getNodeTest
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