Package com.icl.saxon.expr
Class StyleSheetFunctionCall
java.lang.Object
com.icl.saxon.expr.Expression
com.icl.saxon.expr.Function
com.icl.saxon.expr.StyleSheetFunctionCall
This class represents a call to a function defined in the stylesheet
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Field Summary
Fields inherited from class com.icl.saxon.expr.Expression
staticContext
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionEvaluate the functionint
Determine the data type of the expression, if possibleint
Determine which aspects of the context the expression depends on.getName()
Get the name of the function.Remove dependencies.void
Create the reference to the saxon:function elementsimplify()
Simplify the function callMethods inherited from class com.icl.saxon.expr.Function
addArgument, checkArgumentCount, display, getNumberOfArguments
Methods inherited from class com.icl.saxon.expr.Expression
containsReferences, enumerate, evaluateAsBoolean, evaluateAsNodeSet, evaluateAsNumber, evaluateAsString, getStaticContext, indent, isContextDocumentNodeSet, make, outputStringValue, setStaticContext, usesCurrent
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Constructor Details
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StyleSheetFunctionCall
public StyleSheetFunctionCall()
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Method Details
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setFunction
Create the reference to the saxon:function element -
getName
Get the name of the function. -
getDataType
public int getDataType()Determine the data type of the expression, if possible- Specified by:
getDataType
in classExpression
- Returns:
- Value.ANY (meaning not known in advance)
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simplify
Simplify the function call- Overrides:
simplify
in classExpression
- Returns:
- the simplified expression
- Throws:
XPathException
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getDependencies
public int getDependencies()Determine which aspects of the context the expression depends on. The result is a bitwise-or'ed value composed from constants such as Context.VARIABLES and Context.CURRENT_NODE- Specified by:
getDependencies
in classExpression
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reduce
Remove dependencies.- Specified by:
reduce
in classExpression
- Parameters:
dependencies
- The dependencies to be removed, e.g. Context.VARIABLEScontext
- The context to be used for the partial evaluation- Returns:
- a new expression (or Value) that does not have any of the specified dependencies
- Throws:
XPathException
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evaluate
Evaluate the function- Specified by:
evaluate
in classExpression
- Parameters:
c
- The context in which the expression is to be evaluatedcontext
- The context in which the function is to be evaluated- Returns:
- a Value representing the result of the function. This must be of the data type corresponding to the result of getType().
- Throws:
XPathException
- if the function cannot be evaluated.
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