public void initialize(CSLExtension ext) {
try {
extension = ext;
String calClassName = extension.getCSLClassName();
Class<?> clazz = Class.forName(calClassName);
Method[] list = clazz.getMethods();
for (Method m : list) {
methods.put(m.getName(), m);
}
} catch (ClassNotFoundException ex) {
Logger.getLogger(CSLExtensionHelper.class.getName()).log(Level.SEVERE, null, ex);
}
}
public int getMethodParameterCount(String name) {
int result = -1;
Method m = methods.get(name);
if (m != null) {
result = m.getParameterTypes().length;
}
if (result == -1) {
throw new ScriptExecutionException(
101, "Extension " + extension.getId() + " has no such method: " + name);
}
return result;
}
public IValue executeMethod(String name, List<IValue> params) {
Method m = methods.get(name);
Object[] paramArray = new Object[params.size()];
for (int i = 0; i < params.size(); i++) {
IValue param = params.get(i);
if (m.getParameterTypes()[i].equals(String.class)) {
paramArray[i] = param.valueAsString();
} else if (m.getParameterTypes()[i].equals(Boolean.class)
|| m.getParameterTypes()[i].equals(Boolean.TYPE)) {
paramArray[i] = param.valueAsBoolean();
} else if (isRuleVariable(m.getParameterTypes()[i])) {
paramArray[i] = param.valueAsObject();
} else {
// defaulting to a number
paramArray[i] = param.valueAsDouble();
}
}
try {
Object result = m.invoke(extension, paramArray);
if (result instanceof IValue) {
return (IValue) result;
} else if (result instanceof List) {
List<?> list = (List<?>) result;
List<IValue> ivals = new ArrayList<IValue>();
for (Object o : list) {
StringVariable var = new StringVariable(null, o.toString());
ivals.add(var);
}
Array returnArray = new Array(null);
returnArray.initialize(ivals);
return returnArray;
} else {
return new StringVariable(null, result.toString());
}
} catch (Exception e) {
throw new ScriptExecutionException(
102,
"Extension "
+ extension.getId()
+ " invocation failure: "
+ e.getCause().getLocalizedMessage());
}
}
