public override void HandleUpdate(bool isBaseEventType,
RevisionStateMerge revisionState,
RevisionEventBeanMerge revisionEvent,
RevisionTypeDesc typesDesc)
{
EventBean underlyingEvent = revisionEvent.UnderlyingFullOrDelta;
NullableObject <Object>[] changeSetValues = revisionState.Overlays;
if (changeSetValues == null) // optimization - the full event sets it to null, deltas all get a new one
{
changeSetValues = new NullableObject <Object> [spec.ChangesetPropertyNames.Length];
}
else
{
changeSetValues = ArrayCopy(changeSetValues); // preserve the last revisions
}
// apply all properties of the delta event
int[] indexes = typesDesc.ChangesetPropertyIndex;
EventPropertyGetter[] getters = typesDesc.ChangesetPropertyGetters;
for (int i = 0; i < indexes.Length; i++)
{
int index = indexes[i];
if (!getters[i].IsExistsProperty(underlyingEvent))
{
continue;
}
Object value = getters[i].Get(underlyingEvent);
changeSetValues[index] = new NullableObject <Object>(value);
}
revisionState.Overlays = changeSetValues;
}
/// <summary>Merge properties. </summary>
/// <param name="isBaseEventType">true if the event is a base event type</param>
/// <param name="revisionState">the current state, to be updated.</param>
/// <param name="revisionEvent">the new event to merge</param>
/// <param name="typesDesc">descriptor for event type of the new event to merge</param>
public abstract void HandleUpdate(bool isBaseEventType,
RevisionStateMerge revisionState,
RevisionEventBeanMerge revisionEvent,
RevisionTypeDesc typesDesc);
public override void OnUpdate(EventBean[] newData, EventBean[] oldData, NamedWindowRootViewInstance namedWindowRootView, EventTableIndexRepository indexRepository)
{
// If new data is filled, it is not a delete
RevisionEventBeanMerge revisionEvent;
Object key;
if ((newData == null) || (newData.Length == 0))
{
// we are removing an event
revisionEvent = (RevisionEventBeanMerge)oldData[0];
key = revisionEvent.Key;
_statePerKey.Remove(key);
// Insert into indexes for fast deletion, if there are any
foreach (EventTable table in indexRepository.GetTables())
{
table.Remove(oldData);
}
// make as not the latest event since its due for removal
revisionEvent.IsLatest = false;
namedWindowRootView.UpdateChildren(null, oldData);
return;
}
revisionEvent = (RevisionEventBeanMerge)newData[0];
EventBean underlyingEvent = revisionEvent.UnderlyingFullOrDelta;
EventType underyingEventType = underlyingEvent.EventType;
// obtain key values
key = null;
RevisionTypeDesc typesDesc;
Boolean isBaseEventType = false;
if (underyingEventType == RevisionSpec.BaseEventType)
{
typesDesc = _infoFullType;
key = PropertyUtility.GetKeys(underlyingEvent, _infoFullType.KeyPropertyGetters);
isBaseEventType = true;
}
else
{
typesDesc = TypeDescriptors.Get(underyingEventType);
// if this type cannot be found, check all supertypes, if any
if (typesDesc == null)
{
EventType[] superTypes = underyingEventType.DeepSuperTypes;
if (superTypes != null)
{
foreach (var superType in superTypes)
{
if (superType == RevisionSpec.BaseEventType)
{
typesDesc = _infoFullType;
key = PropertyUtility.GetKeys(underlyingEvent, _infoFullType.KeyPropertyGetters);
isBaseEventType = true;
break;
}
typesDesc = TypeDescriptors.Get(superType);
if (typesDesc != null)
{
TypeDescriptors.Put(underyingEventType, typesDesc);
key = PropertyUtility.GetKeys(underlyingEvent, typesDesc.KeyPropertyGetters);
break;
}
}
}
}
else
{
key = PropertyUtility.GetKeys(underlyingEvent, typesDesc.KeyPropertyGetters);
}
}
// get the state for this key value
RevisionStateMerge revisionState = _statePerKey.Get(key);
// Delta event and no full
if ((!isBaseEventType) && (revisionState == null))
{
return; // Ignore the event, its a delta and we don't currently have a full event for it
}
// New full event
if (revisionState == null)
{
revisionState = new RevisionStateMerge(underlyingEvent, null, null);
_statePerKey.Put(key, revisionState);
// prepare revison event
revisionEvent.LastBaseEvent = underlyingEvent;
revisionEvent.Key = key;
revisionEvent.Overlay = null;
revisionEvent.IsLatest = true;
// Insert into indexes for fast deletion, if there are any
foreach (EventTable table in indexRepository.GetTables())
{
table.Add(newData);
}
// post to data window
revisionState.LastEvent = revisionEvent;
namedWindowRootView.UpdateChildren(new EventBean[] { revisionEvent }, null);
return;
}
// handle Update, changing revision state and event as required
_updateStrategy.HandleUpdate(isBaseEventType, revisionState, revisionEvent, typesDesc);
// prepare revision event
revisionEvent.LastBaseEvent = revisionState.BaseEventUnderlying;
revisionEvent.Overlay = revisionState.Overlays;
revisionEvent.Key = key;
revisionEvent.IsLatest = true;
// get prior event
RevisionEventBeanMerge lastEvent = revisionState.LastEvent;
lastEvent.IsLatest = false;
// data to post
var newDataPost = new EventBean[] { revisionEvent };
var oldDataPost = new EventBean[] { lastEvent };
// Update indexes
foreach (EventTable table in indexRepository.GetTables())
{
table.Remove(oldDataPost);
table.Add(newDataPost);
}
// keep reference to last event
revisionState.LastEvent = revisionEvent;
namedWindowRootView.UpdateChildren(newDataPost, oldDataPost);
}
public override void HandleUpdate(bool isBaseEventType,
RevisionStateMerge revisionState,
RevisionEventBeanMerge revisionEvent,
RevisionTypeDesc typesDesc)
{
EventBean underlyingEvent = revisionEvent.UnderlyingFullOrDelta;
// Previously-seen full event
if (isBaseEventType)
{
// If delta types don't add properties, simply set the overlay to null
NullableObject <Object>[] changeSetValues;
if (!spec.IsDeltaTypesAddProperties)
{
changeSetValues = null;
}
// If delta types do add properties, set a new overlay
else
{
changeSetValues = revisionState.Overlays;
if (changeSetValues == null) // optimization - the full event sets it to null, deltas all get a new one
{
changeSetValues = new NullableObject <Object> [spec.ChangesetPropertyNames.Length];
}
else
{
changeSetValues = ArrayCopy(changeSetValues); // preserve the last revisions
}
// reset properties not contributed by any delta, leaving all delta-contributed properties in place
bool[] changesetPropertyDeltaContributed = spec.ChangesetPropertyDeltaContributed;
for (int i = 0; i < changesetPropertyDeltaContributed.Length; i++)
{
// if contributed then leave the value, else override
if (!changesetPropertyDeltaContributed[i])
{
changeSetValues[i] = null;
}
}
}
revisionState.Overlays = changeSetValues;
revisionState.BaseEventUnderlying = underlyingEvent;
}
// Delta event to existing full event merge
else
{
NullableObject <Object>[] changeSetValues = revisionState.Overlays;
if (changeSetValues == null) // optimization - the full event sets it to null, deltas all get a new one
{
changeSetValues = new NullableObject <Object> [spec.ChangesetPropertyNames.Length];
}
else
{
changeSetValues = ArrayCopy(changeSetValues); // preserve the last revisions
}
// apply all properties of the delta event
int[] indexes = typesDesc.ChangesetPropertyIndex;
EventPropertyGetter[] getters = typesDesc.ChangesetPropertyGetters;
for (int i = 0; i < indexes.Length; i++)
{
int index = indexes[i];
Object value = getters[i].Get(underlyingEvent);
changeSetValues[index] = new NullableObject <Object>(value);
}
revisionState.Overlays = changeSetValues;
}
}
