FilterFactory functionName should support argument description
--------------------------------------------------------------
Key: GEOT-3519
URL: http://jira.codehaus.org/browse/GEOT-3519
Project: GeoTools
Issue Type: Wish
Components: core filter
Affects Versions: 8-M0
Reporter: Jody Garnett
Priority: Trivial
FunctionName is defined as:
{code}
public interface FunctionName extends Operator {
/**
* Number of arguments the function accepts.
* <p>
* <ul>
* <li>Use a postivie number to indicate the number of arguments.
* Example: add( number1, number2 ) = 2</li>
* <li>Use a negative number to indicate a minimum number:
* Example: concat( str1, str2,... ) has -2</li>
* </ul>
*
* <pre>
* <xsd:attribute name="nArgs" type="xsd:string" use="required"/>
* </pre>
* </p>
*/
@UML(identifier="argumentCount", specification=UNSPECIFIED)
int getArgumentCount();
/**
* Argument names for documentation purposes if known.
*
* @return Argument names (for documentation purposes) if known
*/
List<String> getArgumentNames();
}
{code}
However FilterFactory only provides the following method for creation:
{code}
/** function name */
FunctionName functionName(String name, int nargs);
{code}
I would like to add the following to complete this relationship:
{code}
/**
* FunctionName used to describe an available function.
*
* @param name
* name of function
* @param nargs
* number of arguments, use a negative number to indicate a
minimum if the function
* supports an open ended number of arguments
* @param argNames
* Optional list of argument names
*/
FunctionName functionName(String name, int nargs, List<String> argNames);
{code}
I will add this this to FilterFactory2 (as it does represent us going beyond
the standard).
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