public class StringLength_1 extends ScalarSystemFunction
ZERO_LENGTH_STRING
Constructor and Description |
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StringLength_1() |
Modifier and Type | Method and Description |
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AtomicValue |
evaluate(Item arg,
XPathContext context)
Abstract method that must be supplied in subclasses to perform the evaluation
|
java.lang.String |
getCompilerName()
Get the (local) name of a class that can be used to generate bytecode for this
system function
|
IntegerValue[] |
getIntegerBounds()
For an expression that returns an integer or a sequence of integers, get
a lower and upper bound on the values of the integers that may be returned, from
static analysis.
|
ZeroOrOne<? extends AtomicValue> |
resultWhenEmpty()
Method that may be supplied in subclasses, to indicate the result that is returned
when an empty sequence is supplied as the argument value.
|
call, makeFunctionCall
dependsOnContextItem, dynamicCall, equals, export, exportAdditionalArguments, exportAttributes, fixArguments, getArity, getCardinality, getContextNode, getDescription, getDetails, getErrorCodeForTypeErrors, getFunctionItemType, getFunctionName, getNetCost, getOperandRoles, getRequiredType, getResultItemType, getResultItemType, getRetainedStaticContext, getSpecialProperties, getStaticBaseUriString, getStreamerName, importAttributes, isTrustedResultType, makeCall, makeFunction, makeOptimizedFunctionCall, resultIfEmpty, setArity, setDetails, setRetainedStaticContext, supplyTypeInformation, typeCheckCaller
atomize, deepEquals, effectiveBooleanValue, getAnnotations, getStringValue, getStringValueCS, isArray, isMap, makeNewContext, simplify, typeCheck
getLength, head, isStreamed, itemAt, iterate, reduce, subsequence
clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getLength, head, itemAt, reduce, subsequence
public IntegerValue[] getIntegerBounds()
getIntegerBounds
in class SystemFunction
public ZeroOrOne<? extends AtomicValue> resultWhenEmpty()
ScalarSystemFunction
resultWhenEmpty
in class ScalarSystemFunction
public AtomicValue evaluate(Item arg, XPathContext context) throws XPathException
ScalarSystemFunction
evaluate
in class ScalarSystemFunction
arg
- the supplied argumentcontext
- the dynamic contextXPathException
- if a dynamic error occurspublic java.lang.String getCompilerName()
SystemFunction
getCompilerName
in class SystemFunction
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