Class CurrentDateTime

All Implemented Interfaces:
Serializable, SourceLocator, Container, Expression, InstructionInfoProvider

public class CurrentDateTime extends SystemFunction
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.
See Also:
  • Constructor Details

    • CurrentDateTime

      public CurrentDateTime()
  • Method Details

    • preEvaluate

      public 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)
      Overrides:
      preEvaluate in class FunctionCall
    • getIntrinsicDependencies

      public int getIntrinsicDependencies()
      Determine the dependencies
      Overrides:
      getIntrinsicDependencies in class ComputedExpression
      Returns:
      a set of bit-significant flags identifying the "intrinsic" dependencies. The flags are documented in class net.sf.saxon.value.StaticProperty
    • evaluateItem

      public Item evaluateItem(XPathContext context) throws XPathException
      Evaluate in a general context
      Specified by:
      evaluateItem in interface Expression
      Overrides:
      evaluateItem in class ComputedExpression
      Parameters:
      context - The context in which the expression is to be evaluated
      Returns:
      the node or atomic value that results from evaluating the expression; or null to indicate that the result is an empty sequence
      Throws:
      XPathException - if any dynamic error occurs evaluating the expression
    • getImplicitTimezone

      public static SecondsDurationValue getImplicitTimezone(XPathContext context) throws XPathException
      Get the implicit timezone
      Throws:
      XPathException