/**
* Checks if a message has the requested attribute. The class of the required attribute has to be
* the same. Subclasses will not be detected.
*
* @param message the message to check
* @param attributeClass the attribute which should be included in the message
* @throws Exception if the requested attribute is not included in the message
*/
public <T extends Attribute> void checkForAttribute(
final Message message, final Class<T> attributeClass) throws Exception {
if (!message.hasAttribute(attributeClass)) {
final String errorMessage =
attributeClass.getSimpleName() + " attribute expected"; // $NON-NLS-1
throw new Exception(errorMessage);
}
}
/**
* Checks if a message has an attribute with the given {@link AttributeType} . This method can be
* used to check if a message includes a subclass of an attribute with the given type.
*
* @param message the message to check
* @param requiredAttributeType the required {@link AttributeType}
* @throws Exception if the message has no attribute with the given type
*/
public void checkForAttributeType(
final Message message, final AttributeType requiredAttributeType) throws Exception {
boolean hasAttribute = false;
for (final Attribute a : message.getAttributes()) {
if (a.getType().equals(requiredAttributeType)) {
hasAttribute = true;
break;
}
}
if (!hasAttribute) {
throw new Exception(requiredAttributeType.toString() + " attribute expected"); // $NON-NLS-1
}
}