@Override
public Model open(Assembler a, Resource root, Mode mode) {
Resource rootModel = getUniqueResource(root, BASE_MODEL);
if (rootModel == null) {
throw new AssemblerException(root, String.format(NO_X_PROVIDED, BASE_MODEL, root));
}
Model baseModel = a.openModel(rootModel, mode);
Literal modelName = getUniqueLiteral(root, JA.modelName);
if (modelName == null) {
throw new AssemblerException(root, String.format(NO_X_PROVIDED, JA.modelName, root));
}
Literal factoryName = getUniqueLiteral(root, EVALUATOR_FACTORY);
if (factoryName == null) {
throw new AssemblerException(root, String.format(NO_X_PROVIDED, EVALUATOR_FACTORY, root));
}
SecurityEvaluator securityEvaluator = null;
try {
Class<?> factoryClass = Class.forName(factoryName.getString());
Method method = factoryClass.getMethod("getInstance");
if (!SecurityEvaluator.class.isAssignableFrom(method.getReturnType())) {
throw new AssemblerException(
root,
String.format(
"%s (found at %s for %s) getInstance() must return an instance of SecurityEvaluator",
factoryName, EVALUATOR_FACTORY, root));
}
if (!Modifier.isStatic(method.getModifiers())) {
throw new AssemblerException(
root,
String.format(
"%s (found at %s for %s) getInstance() must be a static method",
factoryName, EVALUATOR_FACTORY, root));
}
securityEvaluator = (SecurityEvaluator) method.invoke(null);
} catch (SecurityException e) {
throw new AssemblerException(
root, String.format(ERROR_FINDING_FACTORY, factoryName, e.getMessage()), e);
} catch (IllegalArgumentException e) {
throw new AssemblerException(
root, String.format(ERROR_FINDING_FACTORY, factoryName, e.getMessage()), e);
} catch (ClassNotFoundException e) {
throw new AssemblerException(
root,
String.format(
"Class %s (found at %s for %s) could not be loaded",
factoryName, EVALUATOR_FACTORY, root));
} catch (NoSuchMethodException e) {
throw new AssemblerException(
root,
String.format(
"%s (found at %s for %s) must implement a static getInstance() that returns an instance of SecurityEvaluator",
factoryName, EVALUATOR_FACTORY, root));
} catch (IllegalAccessException e) {
throw new AssemblerException(
root, String.format(ERROR_FINDING_FACTORY, factoryName, e.getMessage()), e);
} catch (InvocationTargetException e) {
throw new AssemblerException(
root, String.format(ERROR_FINDING_FACTORY, factoryName, e.getMessage()), e);
}
return Factory.getInstance(securityEvaluator, modelName.asLiteral().getString(), baseModel);
}
