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java.lang.Object
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+--com.icl.saxon.expr.Expression
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+--com.icl.saxon.expr.Function
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+--com.icl.saxon.functions.BooleanFn
| Fields inherited from class com.icl.saxon.expr.Function |
arguments |
| Fields inherited from class com.icl.saxon.expr.Expression |
emptyVector, staticContext |
| Constructor Summary | |
BooleanFn()
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| Method Summary | |
Value |
eval(java.util.Vector args,
Context context)
Evaluate the function, having evaluated its arguments. |
int |
getDataType()
Determine the data type of the exprssion, if possible |
java.lang.String |
getName()
Get the name of the function. |
Expression |
simplify()
Simplify This is a pure function so it can be simplified in advance if the arguments are known |
| Methods inherited from class com.icl.saxon.expr.Function |
addArgument, checkArgumentCount, evaluate, getDependencies, getIntrinsicDependencies, newInstance, reduce, reduceIntrinsic, simplifyPureFunction, toString |
| Methods inherited from class com.icl.saxon.expr.Expression |
containsReferences, enumerate, evaluateAsBoolean, evaluateAsNodeSet, evaluateAsNumber, evaluateAsString, getStaticContext, isNumeric, isRelative, make, make, setStaticContext, usesCurrent |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Constructor Detail |
public BooleanFn()
| Method Detail |
public java.lang.String getName()
FunctiongetName in class Functioncom.icl.saxon.expr.Functionpublic int getDataType()
getDataType in class Expression
public Value eval(java.util.Vector args,
Context context)
throws org.xml.sax.SAXException
Functioneval in class Functioncom.icl.saxon.expr.Functionarguments - A Vector, each of whose elements is a Value containing the value of a
supplied argument to the function.context - The context in which the function is to be evaluatedorg.xml.sax.SAXException - if the function cannot be evaluated.
public Expression simplify()
throws org.xml.sax.SAXException
simplify in class Functioncom.icl.saxon.expr.Function
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