Package net.sf.saxon.functions
Class SubstringBefore
java.lang.Object
net.sf.saxon.functions.AbstractFunction
net.sf.saxon.functions.SystemFunction
net.sf.saxon.functions.CollatingFunctionFixed
net.sf.saxon.functions.SubstringBefore
- All Implemented Interfaces:
Callable
,StatefulSystemFunction
,FunctionItem
,GroundedValue
,Item
,Sequence
Implements the fn:substring-before() function with the collation already known
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Nested Class Summary
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptioncall
(XPathContext context, Sequence[] arguments) Evaluate the expressionMake an elaborator for a system function call on this functionboolean
Ask whether this function needs a collation that can handle substring matchingMethods inherited from class net.sf.saxon.functions.CollatingFunctionFixed
copy, exportAttributes, getAtomicComparer, getPreAllocatedAtomicComparer, getStringCollator, importAttributes, preAllocateComparer, setCollationName, setRetainedStaticContext
Methods inherited from class net.sf.saxon.functions.SystemFunction
dependsOnContextItem, dynamicCall, equals, export, exportAdditionalArguments, fixArguments, getArity, getCardinality, getContextNode, getDescription, getDetails, getErrorCodeForTypeErrors, getFunctionItemType, getFunctionName, getIntegerBounds, getNetCost, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getSpecialProperties, getStaticBaseUriString, getStreamerName, getUniStringArg, hashCode, isSequenceVariadic, isTrustedResultType, makeCall, makeFunction, makeFunction40, makeFunctionCall, makeOptimizedFunctionCall, resultIfEmpty, setArity, setDetails, supplyTypeInformation, toShortString, toString, typeCheckCaller
Methods inherited from class net.sf.saxon.functions.AbstractFunction
atomize, deepEqual40, deepEquals, effectiveBooleanValue, getAnnotations, getUnicodeStringValue, isArray, isMap, makeNewContext, simplify, typeCheck
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface net.sf.saxon.om.FunctionItem
getGenre
Methods inherited from interface net.sf.saxon.om.GroundedValue
asIterable, concatenate, containsNode, materialize
Methods inherited from interface net.sf.saxon.om.Item
getLength, getStringValue, head, isStreamed, itemAt, iterate, reduce, subsequence
Methods inherited from interface net.sf.saxon.om.Sequence
makeRepeatable
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Constructor Details
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SubstringBefore
public SubstringBefore()
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Method Details
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isSubstringMatchingFunction
public boolean isSubstringMatchingFunction()Description copied from class:CollatingFunctionFixed
Ask whether this function needs a collation that can handle substring matching- Overrides:
isSubstringMatchingFunction
in classCollatingFunctionFixed
- Returns:
- true in the case of functions such as contains() and starts-with() where substring matching is required. Returns false by default;
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call
Evaluate the expression- Parameters:
context
- the dynamic evaluation contextarguments
- the values of the arguments, supplied as Sequences- Returns:
- the result of the evaluation, in the form of a Sequence
- Throws:
XPathException
- if a dynamic error occurs during the evaluation of the expression
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getElaborator
Make an elaborator for a system function call on this function- Overrides:
getElaborator
in classSystemFunction
- Returns:
- a suitable elaborator; or null if no custom elaborator is available
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