<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!--NewPage-->
<HTML>
<HEAD>
<!-- Generated by javadoc (build 1.6.0_18) on Fri Dec 09 20:48:25 GMT 2011 -->
<TITLE>
ImportedFunctionLibrary
</TITLE>
<META NAME="date" CONTENT="2011-12-09">
<LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style">
<SCRIPT type="text/javascript">
function windowTitle()
{
if (location.href.indexOf('is-external=true') == -1) {
parent.document.title="ImportedFunctionLibrary";
}
}
</SCRIPT>
<NOSCRIPT>
</NOSCRIPT>
</HEAD>
<BODY BGCOLOR="white" onload="windowTitle();">
<HR>
<!-- ========= START OF TOP NAVBAR ======= -->
<A NAME="navbar_top"><!-- --></A>
<A HREF="#skip-navbar_top" title="Skip navigation links"></A>
<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY="">
<TR>
<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">
<A NAME="navbar_top_firstrow"><!-- --></A>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY="">
<TR ALIGN="center" VALIGN="top">
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD>
<TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD>
</TR>
</TABLE>
</TD>
<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
</EM>
</TD>
</TR>
<TR>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
<A HREF="../../../../net/sf/saxon/query/GlobalVariableDefinition.html" title="class in net.sf.saxon.query"><B>PREV CLASS</B></A>
<A HREF="../../../../net/sf/saxon/query/QueryLibrary.html" title="class in net.sf.saxon.query"><B>NEXT CLASS</B></A></FONT></TD>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
<A HREF="../../../../index.html?net/sf/saxon/query/ImportedFunctionLibrary.html" target="_top"><B>FRAMES</B></A>
<A HREF="ImportedFunctionLibrary.html" target="_top"><B>NO FRAMES</B></A>
<SCRIPT type="text/javascript">
<!--
if(window==top) {
document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>');
}
//-->
</SCRIPT>
<NOSCRIPT>
<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>
</NOSCRIPT>
</FONT></TD>
</TR>
<TR>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD>
</TR>
</TABLE>
<A NAME="skip-navbar_top"></A>
<!-- ========= END OF TOP NAVBAR ========= -->
<HR>
<!-- ======== START OF CLASS DATA ======== -->
<H2>
<FONT SIZE="-1">
net.sf.saxon.query</FONT>
<BR>
Class ImportedFunctionLibrary</H2>
<PRE>
<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>net.sf.saxon.query.ImportedFunctionLibrary</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://download.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</A>, <A HREF="../../../../net/sf/saxon/functions/FunctionLibrary.html" title="interface in net.sf.saxon.functions">FunctionLibrary</A>, <A HREF="../../../../net/sf/saxon/query/XQueryFunctionBinder.html" title="interface in net.sf.saxon.query">XQueryFunctionBinder</A></DD>
</DL>
<HR>
<DL>
<DT><PRE>public class <B>ImportedFunctionLibrary</B><DT>extends <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../../../net/sf/saxon/functions/FunctionLibrary.html" title="interface in net.sf.saxon.functions">FunctionLibrary</A>, <A HREF="../../../../net/sf/saxon/query/XQueryFunctionBinder.html" title="interface in net.sf.saxon.query">XQueryFunctionBinder</A></DL>
</PRE>
<P>
This implementation of FunctionLibrary contains all the functions imported into a Query Module.
It is implemented as a view of the "global" XQueryFunctionLibrary for the whole query, selecting
only those functions that are in an imported namespace.
<P>
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../serialized-form.html#net.sf.saxon.query.ImportedFunctionLibrary">Serialized Form</A></DL>
<HR>
<P>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<A NAME="constructor_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Constructor Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../net/sf/saxon/query/ImportedFunctionLibrary.html#ImportedFunctionLibrary(net.sf.saxon.query.QueryModule, net.sf.saxon.query.XQueryFunctionLibrary)">ImportedFunctionLibrary</A></B>(<A HREF="../../../../net/sf/saxon/query/QueryModule.html" title="class in net.sf.saxon.query">QueryModule</A> importingModule,
<A HREF="../../../../net/sf/saxon/query/XQueryFunctionLibrary.html" title="class in net.sf.saxon.query">XQueryFunctionLibrary</A> baseLibrary)</CODE>
<BR>
Create an imported function library</TD>
</TR>
</TABLE>
<!-- ========== METHOD SUMMARY =========== -->
<A NAME="method_summary"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
<B>Method Summary</B></FONT></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/query/ImportedFunctionLibrary.html#addImportedNamespace(java.lang.String)">addImportedNamespace</A></B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> namespace)</CODE>
<BR>
Add an imported namespace</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/query/ImportedFunctionLibrary.html#bind(net.sf.saxon.om.StructuredQName, net.sf.saxon.expr.Expression[], net.sf.saxon.expr.StaticContext, net.sf.saxon.expr.Container)">bind</A></B>(<A HREF="../../../../net/sf/saxon/om/StructuredQName.html" title="class in net.sf.saxon.om">StructuredQName</A> functionName,
<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A>[] staticArgs,
<A HREF="../../../../net/sf/saxon/expr/StaticContext.html" title="interface in net.sf.saxon.expr">StaticContext</A> env,
<A HREF="../../../../net/sf/saxon/expr/Container.html" title="interface in net.sf.saxon.expr">Container</A> container)</CODE>
<BR>
Bind an extension function, given the URI and local parts of the function name,
and the list of expressions supplied as arguments.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../net/sf/saxon/functions/FunctionLibrary.html" title="interface in net.sf.saxon.functions">FunctionLibrary</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/query/ImportedFunctionLibrary.html#copy()">copy</A></B>()</CODE>
<BR>
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.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../net/sf/saxon/query/XQueryFunction.html" title="class in net.sf.saxon.query">XQueryFunction</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/query/ImportedFunctionLibrary.html#getDeclaration(net.sf.saxon.om.StructuredQName, net.sf.saxon.expr.Expression[])">getDeclaration</A></B>(<A HREF="../../../../net/sf/saxon/om/StructuredQName.html" title="class in net.sf.saxon.om">StructuredQName</A> functionName,
<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A>[] staticArgs)</CODE>
<BR>
Get the function declaration corresponding to a given function name and arity</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../../net/sf/saxon/value/SequenceType.html" title="class in net.sf.saxon.value">SequenceType</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/query/ImportedFunctionLibrary.html#getFunctionSignature(net.sf.saxon.om.StructuredQName, int)">getFunctionSignature</A></B>(<A HREF="../../../../net/sf/saxon/om/StructuredQName.html" title="class in net.sf.saxon.om">StructuredQName</A> functionName,
int arity)</CODE>
<BR>
Test whether a function with a given name and arity is available; if so, return its signature.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/saxon/query/ImportedFunctionLibrary.html#setImportingModule(net.sf.saxon.query.QueryModule)">setImportingModule</A></B>(<A HREF="../../../../net/sf/saxon/query/QueryModule.html" title="class in net.sf.saxon.query">QueryModule</A> importingModule)</CODE>
<BR>
Set the module that imports this function libary</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
<P>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="ImportedFunctionLibrary(net.sf.saxon.query.QueryModule, net.sf.saxon.query.XQueryFunctionLibrary)"><!-- --></A><H3>
ImportedFunctionLibrary</H3>
<PRE>
public <B>ImportedFunctionLibrary</B>(<A HREF="../../../../net/sf/saxon/query/QueryModule.html" title="class in net.sf.saxon.query">QueryModule</A> importingModule,
<A HREF="../../../../net/sf/saxon/query/XQueryFunctionLibrary.html" title="class in net.sf.saxon.query">XQueryFunctionLibrary</A> baseLibrary)</PRE>
<DL>
<DD>Create an imported function library
<P>
<DL>
<DT><B>Parameters:</B><DD><CODE>importingModule</CODE> - the module importing the library<DD><CODE>baseLibrary</CODE> - the function library of which this is a subset view</DL>
</DL>
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>
<A NAME="addImportedNamespace(java.lang.String)"><!-- --></A><H3>
addImportedNamespace</H3>
<PRE>
public void <B>addImportedNamespace</B>(<A HREF="http://download.oracle.com/javase/6/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> namespace)</PRE>
<DL>
<DD>Add an imported namespace
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>namespace</CODE> - the imported namespace</DL>
</DD>
</DL>
<HR>
<A NAME="bind(net.sf.saxon.om.StructuredQName, net.sf.saxon.expr.Expression[], net.sf.saxon.expr.StaticContext, net.sf.saxon.expr.Container)"><!-- --></A><H3>
bind</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A> <B>bind</B>(<A HREF="../../../../net/sf/saxon/om/StructuredQName.html" title="class in net.sf.saxon.om">StructuredQName</A> functionName,
<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A>[] staticArgs,
<A HREF="../../../../net/sf/saxon/expr/StaticContext.html" title="interface in net.sf.saxon.expr">StaticContext</A> env,
<A HREF="../../../../net/sf/saxon/expr/Container.html" title="interface in net.sf.saxon.expr">Container</A> container)
throws <A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></PRE>
<DL>
<DD>Bind an extension function, given the URI and local parts of the function name,
and the list of expressions supplied as arguments. This method is called at compile
time.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/functions/FunctionLibrary.html#bind(net.sf.saxon.om.StructuredQName, net.sf.saxon.expr.Expression[], net.sf.saxon.expr.StaticContext, net.sf.saxon.expr.Container)">bind</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/functions/FunctionLibrary.html" title="interface in net.sf.saxon.functions">FunctionLibrary</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>functionName</CODE> - the name of the function to be bound<DD><CODE>staticArgs</CODE> - 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.
<p/>
The conventions of the XPath language demand that the results of a function depend only on the
values of the expressions supplied as arguments, and not on the form of those expressions. For
example, the result of f(4) is expected to be the same as f(2+2). The actual expression is supplied
here to enable the binding mechanism to select the most efficient possible implementation (including
compile-time pre-evaluation where appropriate).<DD><CODE>env</CODE> - <DD><CODE>container</CODE> -
<DT><B>Returns:</B><DD>An object representing the function to be called, if one is found;
null if no function was found matching the required name and arity.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../../net/sf/saxon/trans/XPathException.html" title="class in net.sf.saxon.trans">XPathException</A></CODE> - 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.</DL>
</DD>
</DL>
<HR>
<A NAME="getDeclaration(net.sf.saxon.om.StructuredQName, net.sf.saxon.expr.Expression[])"><!-- --></A><H3>
getDeclaration</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/query/XQueryFunction.html" title="class in net.sf.saxon.query">XQueryFunction</A> <B>getDeclaration</B>(<A HREF="../../../../net/sf/saxon/om/StructuredQName.html" title="class in net.sf.saxon.om">StructuredQName</A> functionName,
<A HREF="../../../../net/sf/saxon/expr/Expression.html" title="class in net.sf.saxon.expr">Expression</A>[] staticArgs)</PRE>
<DL>
<DD>Get the function declaration corresponding to a given function name and arity
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/query/XQueryFunctionBinder.html#getDeclaration(net.sf.saxon.om.StructuredQName, net.sf.saxon.expr.Expression[])">getDeclaration</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/query/XQueryFunctionBinder.html" title="interface in net.sf.saxon.query">XQueryFunctionBinder</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>functionName</CODE> - the name of the function as a QName<DD><CODE>staticArgs</CODE> - the expressions supplied as arguments in the function call (typically,
we only need to know the number of arguments)
<DT><B>Returns:</B><DD>the XQueryFunction if there is one, or null if not.</DL>
</DD>
</DL>
<HR>
<A NAME="copy()"><!-- --></A><H3>
copy</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/functions/FunctionLibrary.html" title="interface in net.sf.saxon.functions">FunctionLibrary</A> <B>copy</B>()</PRE>
<DL>
<DD>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.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/functions/FunctionLibrary.html#copy()">copy</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/functions/FunctionLibrary.html" title="interface in net.sf.saxon.functions">FunctionLibrary</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a copy of this function library. This must be an instance of the original class.</DL>
</DD>
</DL>
<HR>
<A NAME="setImportingModule(net.sf.saxon.query.QueryModule)"><!-- --></A><H3>
setImportingModule</H3>
<PRE>
public void <B>setImportingModule</B>(<A HREF="../../../../net/sf/saxon/query/QueryModule.html" title="class in net.sf.saxon.query">QueryModule</A> importingModule)</PRE>
<DL>
<DD>Set the module that imports this function libary
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>importingModule</CODE> - the importing module</DL>
</DD>
</DL>
<HR>
<A NAME="getFunctionSignature(net.sf.saxon.om.StructuredQName, int)"><!-- --></A><H3>
getFunctionSignature</H3>
<PRE>
public <A HREF="../../../../net/sf/saxon/value/SequenceType.html" title="class in net.sf.saxon.value">SequenceType</A>[] <B>getFunctionSignature</B>(<A HREF="../../../../net/sf/saxon/om/StructuredQName.html" title="class in net.sf.saxon.om">StructuredQName</A> functionName,
int arity)</PRE>
<DL>
<DD>Test whether a function with a given name and arity is available; if so, return its signature.
This supports the function-available() function in XSLT; it is also used to support
higher-order functions introduced in XQuery 1.1.
<p>This method may be called either at compile time
or at run time. If the function library is to be used only in an XQuery or free-standing XPath
environment, this method may throw an UnsupportedOperationException.</p>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/saxon/functions/FunctionLibrary.html#getFunctionSignature(net.sf.saxon.om.StructuredQName, int)">getFunctionSignature</A></CODE> in interface <CODE><A HREF="../../../../net/sf/saxon/functions/FunctionLibrary.html" title="interface in net.sf.saxon.functions">FunctionLibrary</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>functionName</CODE> - the qualified name of the function being called<DD><CODE>arity</CODE> - The number of arguments. This is set to -1 in the case of the single-argument
function-available() function; in this case the method should return true if there is some
function of this name available for calling.
<DT><B>Returns:</B><DD>if a function of this name and arity is available for calling, then the type signature of the
function, as an array of sequence types in which the zeroth entry represents the return type; or a zero-length
array if the function exists but the signature is not known; or null if the function does not exist</DL>
</DD>
</DL>
<!-- ========= END OF CLASS DATA ========= -->
<HR>
<!-- ======= START OF BOTTOM NAVBAR ====== -->
<A NAME="navbar_bottom"><!-- --></A>
<A HREF="#skip-navbar_bottom" title="Skip navigation links"></A>
<TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY="">
<TR>
<TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1">
<A NAME="navbar_bottom_firstrow"><!-- --></A>
<TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY="">
<TR ALIGN="center" VALIGN="top">
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD>
<TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD>
<TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD>
</TR>
</TABLE>
</TD>
<TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM>
</EM>
</TD>
</TR>
<TR>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
<A HREF="../../../../net/sf/saxon/query/GlobalVariableDefinition.html" title="class in net.sf.saxon.query"><B>PREV CLASS</B></A>
<A HREF="../../../../net/sf/saxon/query/QueryLibrary.html" title="class in net.sf.saxon.query"><B>NEXT CLASS</B></A></FONT></TD>
<TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">
<A HREF="../../../../index.html?net/sf/saxon/query/ImportedFunctionLibrary.html" target="_top"><B>FRAMES</B></A>
<A HREF="ImportedFunctionLibrary.html" target="_top"><B>NO FRAMES</B></A>
<SCRIPT type="text/javascript">
<!--
if(window==top) {
document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>');
}
//-->
</SCRIPT>
<NOSCRIPT>
<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>
</NOSCRIPT>
</FONT></TD>
</TR>
<TR>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
<TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">
DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD>
</TR>
</TABLE>
<A NAME="skip-navbar_bottom"></A>
<!-- ======== END OF BOTTOM NAVBAR ======= -->
<HR>
Copyright (c) 2004-2011 Saxonica Limited. All rights reserved.
</BODY>
</HTML>
