public class FunctionLibraryList extends java.lang.Object implements FunctionLibrary, XQueryFunctionBinder
Modifier and Type | Field and Description |
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java.util.List<FunctionLibrary> |
libraryList |
Constructor and Description |
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FunctionLibraryList() |
Modifier and Type | Method and Description |
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int |
addFunctionLibrary(FunctionLibrary lib)
Add a new FunctionLibrary to the list of FunctionLibraries in this FunctionLibraryList.
|
Expression |
bind(SymbolicName.F functionName,
Expression[] staticArgs,
StaticContext env)
Bind an extension function, given the URI and local parts of the function name,
and the list of expressions supplied as arguments.
|
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.
|
FunctionLibrary |
get(int n)
Get the n'th function library in the list
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XQueryFunction |
getDeclaration(StructuredQName functionName,
int staticArgs)
Get the function declaration corresponding to a given function name and arity
|
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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java.util.List<FunctionLibrary> |
getLibraryList()
Get the list of contained FunctionLibraries.
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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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public java.util.List<FunctionLibrary> libraryList
public int addFunctionLibrary(FunctionLibrary lib)
lib
- A function library to be added to the list of function libraries to be searched.public FunctionLibrary get(int n)
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 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 arguments to the function call.
The length of this array represents the arity of the function. The intention is
that the static type of the arguments (obtainable via getItemType() and getCardinality() may
be used as part of the binding algorithm. In some cases it may be possible for the function
to be pre-evaluated at compile time, for example if these expressions are all constant values.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.public XQueryFunction getDeclaration(StructuredQName functionName, int staticArgs)
getDeclaration
in interface XQueryFunctionBinder
functionName
- the name of the function as a QNamestaticArgs
- the number of expressions supplied as arguments in the function callpublic java.util.List<FunctionLibrary> getLibraryList()
public FunctionLibrary copy()
copy
in interface FunctionLibrary
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