net.sf.saxon.functions
Class Unordered
java.lang.Object
net.sf.saxon.expr.ComputedExpression
net.sf.saxon.expr.FunctionCall
net.sf.saxon.functions.SystemFunction
net.sf.saxon.functions.CompileTimeFunction
net.sf.saxon.functions.Unordered
- All Implemented Interfaces:
- Serializable, Expression
public class Unordered
- extends CompileTimeFunction
XPath 2.0 unordered() function
- See Also:
- Serialized Form
Methods inherited from class net.sf.saxon.functions.SystemFunction |
addContextDocumentArgument, checkArguments, computeCardinality, display, getDetails, getItemType, getName, getRequiredType, main, makeSystemFunction, useContextItemAsDefault |
Methods inherited from class net.sf.saxon.expr.ComputedExpression |
computeDependencies, computeSpecialProperties, computeStaticProperties, dynamicError, effectiveBooleanValue, evaluateAsString, getCardinality, getDependencies, getIntrinsicDependencies, getLineNumber, getSpecialProperties, markTailFunctionCalls, setLineNumber, typeError |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Unordered
public Unordered()
analyze
public Expression analyze(StaticContext env)
throws XPathException
- Description copied from class:
FunctionCall
- Type-check the expression. This also calls preEvaluate() to evaluate the function
if all the arguments are constant; functions that do not require this behavior
can override the preEvaluate method.
- Specified by:
analyze
in interface Expression
- Overrides:
analyze
in class FunctionCall
- Parameters:
env
- the static context of the expression
- Returns:
- the original expression, rewritten to perform necessary
run-time type checks, and to perform other type-related
optimizations
- Throws:
XPathException
- if an error is discovered during this phase
(typically a type error)
preEvaluate
public Expression preEvaluate(StaticContext env)
throws XPathException
- preEvaluate: called if the argument is constant
- Overrides:
preEvaluate
in class CompileTimeFunction
- Throws:
XPathException