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java.lang.Object net.sf.saxon.functions.FunctionLibraryList
public class FunctionLibraryList
A FunctionLibraryList is a list of FunctionLibraries. It is also a FunctionLibrary in its own right. When required, it searches the list of FunctionLibraries to find the required function.
Field Summary | |
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List<FunctionLibrary> |
libraryList
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Constructor Summary | |
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FunctionLibraryList()
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Method Summary | |
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int |
addFunctionLibrary(FunctionLibrary lib)
Add a new FunctionLibrary to the list of FunctionLibraries in this FunctionLibraryList. |
Expression |
bind(StructuredQName functionName,
Expression[] staticArgs,
StaticContext env,
Container container)
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 |
XQueryFunction |
getDeclaration(StructuredQName functionName,
Expression[] staticArgs)
Get the function declaration corresponding to a given function name and arity |
SequenceType[] |
getFunctionSignature(StructuredQName functionName,
int arity)
Test whether a system function with a given name and arity is available, and return its signature. |
List<FunctionLibrary> |
getLibraryList()
Get the list of contained FunctionLibraries. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public List<FunctionLibrary> libraryList
Constructor Detail |
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public FunctionLibraryList()
Method Detail |
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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 SequenceType[] getFunctionSignature(StructuredQName functionName, int arity)
getFunctionSignature
in interface FunctionLibrary
functionName
- the name of the functionarity
- The number of arguments. This is set to -1 in the case of the single-argument function-available() function
public Expression bind(StructuredQName functionName, Expression[] staticArgs, StaticContext env, Container container) throws XPathException
bind
in interface FunctionLibrary
functionName
- staticArgs
- 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
- container
-
XPathException
- 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, Expression[] staticArgs)
getDeclaration
in interface XQueryFunctionBinder
functionName
- the name of the function as a QNamestaticArgs
- the expressions supplied as arguments in the function call (typically,
we only need to know the number of arguments)
public List<FunctionLibrary> getLibraryList()
public FunctionLibrary copy()
copy
in interface FunctionLibrary
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