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java.lang.Objectnet.sf.saxon.expr.ComputedExpression
net.sf.saxon.expr.FunctionCall
net.sf.saxon.functions.SystemFunction
net.sf.saxon.functions.CurrentDateTime
public class CurrentDateTime
This class implements the XPath 2.0 functions current-date(), current-time(), and current-dateTime(), as well as the function implicit-timezone(). The value that is required is inferred from the type of result required.
Field Summary |
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Fields inherited from class net.sf.saxon.functions.SystemFunction |
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operation |
Fields inherited from class net.sf.saxon.expr.FunctionCall |
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argument |
Fields inherited from class net.sf.saxon.expr.ComputedExpression |
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locationId, staticProperties |
Fields inherited from interface net.sf.saxon.expr.Expression |
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EVALUATE_METHOD, ITERATE_METHOD, PROCESS_METHOD |
Constructor Summary | |
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CurrentDateTime()
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Method Summary | |
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Item |
evaluateItem(XPathContext context)
Evaluate in a general context |
static SecondsDurationValue |
getImplicitTimezone(XPathContext context)
Get the implicit timezone |
int |
getIntrinsicDependencies()
Determine the dependencies |
Expression |
preEvaluate(StaticContext env)
preEvaluate: this method suppresses compile-time evaluation by doing nothing (because the value of the expression depends on the runtime context) |
Methods inherited from class net.sf.saxon.functions.SystemFunction |
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addContextDocumentArgument, checkArguments, computeCardinality, computeSpecialProperties, display, getDetails, getErrorCodeForTypeErrors, getItemType, getRequiredType, main, makeSystemFunction, setDetails, useContextItemAsDefault |
Methods inherited from class net.sf.saxon.expr.FunctionCall |
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checkArgumentCount, getDisplayName, getFunctionNameCode, getNumberOfArguments, iterateSubExpressions, optimize, promote, setArguments, setFunctionNameCode, simplify, simplifyArguments, typeCheck |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public CurrentDateTime()
Method Detail |
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public Expression preEvaluate(StaticContext env)
preEvaluate
in class FunctionCall
public int getIntrinsicDependencies()
getIntrinsicDependencies
in class ComputedExpression
public Item evaluateItem(XPathContext context) throws XPathException
evaluateItem
in interface Expression
evaluateItem
in class ComputedExpression
context
- The context in which the expression is to be evaluated
XPathException
- if any dynamic error occurs evaluating the
expressionpublic static SecondsDurationValue getImplicitTimezone(XPathContext context) throws XPathException
XPathException
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