/**
* Consume an Install event. If the item is being installed and it is not embargoed then we want
* to set the item's policies. See {@link DuoPolicyManager} for details
*
* @param context
* @param event
* @throws Exception
*/
public void consume(Context context, Event event) throws Exception {
Item item = (Item) event.getSubject(context);
// check to see if the item has a StudentWeb grade of "fail"
if (this.isFail(context, item)) {
// if so, withdraw the item
item.withdraw();
return;
}
// we mustn't set the policies if the item is embargoed; these will have already
// been removed, and should stay that way
if (this.isEmbargoed(context, item)) {
return;
}
DuoPolicyManager dpm = new DuoPolicyManager();
dpm.setDefaultPolicies(context, item);
}
/**
* Consume a content event -- just build the sets of objects to add (new) to the index, update,
* and delete.
*
* @param ctx DSpace context
* @param event Content event
*/
public void consume(Context ctx, Event event) throws Exception {
if (objectsToUpdate == null) {
objectsToUpdate = new HashSet<DSpaceObject>();
handlesToDelete = new HashSet<String>();
}
int st = event.getSubjectType();
if (!(st == Constants.ITEM
|| st == Constants.BUNDLE
|| st == Constants.COLLECTION
|| st == Constants.COMMUNITY)) {
log.warn(
"SearchConsumer should not have been given this kind of Subject in an event, skipping: "
+ event.toString());
return;
}
DSpaceObject subject = event.getSubject(ctx);
DSpaceObject object = event.getObject(ctx);
// If event subject is a Bundle and event was Add or Remove,
// transform the event to be a Modify on the owning Item.
// It could be a new bitstream in the TEXT bundle which
// would change the index.
int et = event.getEventType();
if (st == Constants.BUNDLE) {
if ((et == Event.ADD || et == Event.REMOVE)
&& subject != null
&& "TEXT".equals(((Bundle) subject).getName())) {
st = Constants.ITEM;
et = Event.MODIFY;
subject = ((Bundle) subject).getItems()[0];
if (log.isDebugEnabled()) {
log.debug("Transforming Bundle event into MODIFY of Item " + subject.getHandle());
}
} else {
return;
}
}
switch (et) {
case Event.CREATE:
case Event.MODIFY:
case Event.MODIFY_METADATA:
if (subject == null) {
log.warn(
event.getEventTypeAsString()
+ " event, could not get object for "
+ event.getSubjectTypeAsString()
+ " id="
+ String.valueOf(event.getSubjectID())
+ ", perhaps it has been deleted.");
} else {
log.debug("consume() adding event to update queue: " + event.toString());
objectsToUpdate.add(subject);
}
break;
case Event.REMOVE:
case Event.ADD:
if (object == null) {
log.warn(
event.getEventTypeAsString()
+ " event, could not get object for "
+ event.getObjectTypeAsString()
+ " id="
+ String.valueOf(event.getObjectID())
+ ", perhaps it has been deleted.");
} else {
log.debug("consume() adding event to update queue: " + event.toString());
objectsToUpdate.add(object);
}
break;
case Event.DELETE:
String detail = event.getDetail();
if (detail == null) {
log.warn("got null detail on DELETE event, skipping it.");
} else {
log.debug("consume() adding event to delete queue: " + event.toString());
handlesToDelete.add(detail);
}
break;
default:
log.warn(
"SearchConsumer should not have been given a event of type="
+ event.getEventTypeAsString()
+ " on subject="
+ event.getSubjectTypeAsString());
break;
}
}
