public static Class findFunctionClass(String name) {
if (name == null) return null;
if (name.indexOf('.') < 0) // consider as full qualified name
name = FUNCTIONS_PACKAGE + name;
try {
return Class.forName(name);
} catch (Error er) {
// too bad
logger.severe("Function class " + name + " " + er);
} catch (Exception ex) {
logger.severe("Function class " + name + " not found or " + ex);
}
return null;
}
/**
* @param classOf a target class to find method
* @param name of method
* @param paramPattern represents a pattern of parameters, can be list or array of the same type,
* if parameter is an array of some class then method with one array of this type searched, if
* it's a single class than method with list of parameters of this class searched
* @return Method if found, and null if not.
*/
public Method getMethod(Class classOf, String name, Class paramPattern) {
if (classOf == null) return null;
Class[] callParamClasses = null;
if (paramPattern.isArray()) {
callParamClasses = new Class[1];
Arrays.fill(callParamClasses, paramPattern);
} else {
callParamClasses = new Class[parameters.size()];
Arrays.fill(callParamClasses, (Class) paramPattern);
}
try {
return classOf.getDeclaredMethod(name, callParamClasses);
} catch (NoSuchMethodException nsm) {
if (logger.isLoggable(Level.FINEST))
logger.finest(
"Method '"
+ name
+ "' with "
+ callParamClasses.length
+ ", or variable parameters not found, last exception: "
+ nsm);
}
return null;
}