public class StylesheetFunctionLibrary extends java.lang.Object implements FunctionLibrary
Constructor and Description |
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StylesheetFunctionLibrary(StylesheetPackage sheet,
boolean overrideExtensionFunction)
Create a FunctionLibrary that provides access to stylesheet functions
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Modifier and Type | Method and Description |
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Expression |
bind(SymbolicName.F functionName,
Expression[] staticArgs,
StaticContext env)
Bind a function, given the URI and local parts of the function name,
and the list of expressions supplied as arguments.
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FunctionLibrary |
copy()
This method creates a copy of a FunctionLibrary: if the original FunctionLibrary allows
new functions to be added, then additions to this copy will not affect the original, or
vice versa.
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Function |
getFunctionItem(SymbolicName.F functionName,
StaticContext staticContext)
Test whether a function with a given name and arity is available; if so, return a function
item that can be dynamically called.
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StylesheetPackage |
getStylesheetPackage()
Get the stylesheet package to which this function library relates
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boolean |
isAvailable(SymbolicName.F functionName)
Test whether a function with a given name and arity is available
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boolean |
isOverrideExtensionFunction()
Ask whether the functions in this library are "overrideExtensionFunction" functions, that is, defined with
xsl:function override="yes".
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public StylesheetFunctionLibrary(StylesheetPackage sheet, boolean overrideExtensionFunction)
sheet
- The XSLT packageoverrideExtensionFunction
- set to true if this library is to contain functions specifying override="yes",
or to false if it is to contain functions specifying override="no". (XSLT uses two instances
of this class, one for overrideExtensionFunction functions and one for non-overrideExtensionFunction functions.)public boolean isOverrideExtensionFunction()
public StylesheetPackage getStylesheetPackage()
public Expression bind(SymbolicName.F functionName, Expression[] staticArgs, StaticContext env) throws XPathException
bind
in interface FunctionLibrary
functionName
- The name of the functionstaticArgs
- The expressions supplied statically in the function call. The intention is
that the static type of the arguments (obtainable via getItemType() and getCardinality() may
be used as part of the binding algorithm.env
- The static contextXPathException
- if a function is found with the required name and arity, but
the implementation of the function cannot be loaded or used; or if an error occurs
while searching for the function; or if this function library "owns" the namespace containing
the function call, but no function was found.public Function getFunctionItem(SymbolicName.F functionName, StaticContext staticContext) throws XPathException
This supports the function-lookup() function in XPath 3.0.
getFunctionItem
in interface FunctionLibrary
functionName
- the qualified name of the function being calledstaticContext
- the static context to be used by the function, in the event that
it is a system function with dependencies on the static contextXPathException
- in the event of certain errors, for example attempting to get a function
that is privatepublic boolean isAvailable(SymbolicName.F functionName)
This supports the function-available() function in XSLT.
isAvailable
in interface FunctionLibrary
functionName
- the qualified name of the function being calledpublic FunctionLibrary copy()
copy
in interface FunctionLibrary
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