//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public boolean process(org.neo4j.storageengine.api.StorageNodeCursor cursor) throws FAILURE
public override bool Process(StorageNodeCursor cursor)
{
long[] labels = cursor.Labels();
if (labels.Length == 0 && LabelIds.Length != 0)
{
// This node has no labels at all
return(false);
}
if (_labelUpdateVisitor != null)
{
// Notify the label update visitor
_labelUpdateVisitor.visit(labelChanges(cursor.EntityReference(), EMPTY_LONG_ARRAY, labels));
}
if (_propertyUpdatesVisitor != null && containsAnyEntityToken(LabelIds, labels))
{
// Notify the property update visitor
EntityUpdates.Builder updates = EntityUpdates.forEntity(cursor.EntityReference(), true).withTokens(labels);
if (hasRelevantProperty(cursor, updates))
{
return(_propertyUpdatesVisitor.visit(updates.Build()));
}
}
return(false);
}
internal virtual bool HasRelevantProperty(CURSOR cursor, EntityUpdates.Builder updates)
{
if (!cursor.hasProperties())
{
return(false);
}
bool hasRelevantProperty = false;
_propertyCursor.init(cursor.propertiesReference());
while (_propertyCursor.next())
{
int propertyKeyId = _propertyCursor.propertyKey();
if (_propertyKeyIdFilter.test(propertyKeyId))
{
// This relationship has a property of interest to us
Value value = _propertyCursor.propertyValue();
// No need to validate values before passing them to the updater since the index implementation
// is allowed to fail in which ever way it wants to. The result of failure will be the same as
// a failed validation, i.e. population FAILED.
updates.Added(propertyKeyId, value);
hasRelevantProperty = true;
}
}
return(hasRelevantProperty);
}
public override EntityUpdates NodeAsUpdates(long nodeId)
{
NodeRecord node = NodeStore.getRecord(nodeId, NodeStore.newRecord(), FORCE);
if (!node.InUse())
{
return(null);
}
long firstPropertyId = node.NextProp;
if (firstPropertyId == Record.NO_NEXT_PROPERTY.intValue())
{
return(null); // no properties => no updates (it's not going to be in any index)
}
long[] labels = parseLabelsField(node).get(NodeStore);
if (labels.Length == 0)
{
return(null); // no labels => no updates (it's not going to be in any index)
}
EntityUpdates.Builder update = EntityUpdates.forEntity(nodeId, true).withTokens(labels);
foreach (PropertyRecord propertyRecord in PropertyStore.getPropertyRecordChain(firstPropertyId))
{
foreach (PropertyBlock property in propertyRecord)
{
Value value = property.Type.value(property, PropertyStore);
update.Added(property.KeyIndexId, value);
}
}
return(update.Build());
}
private void GatherUpdatesFor(long nodeId, Command.NodeCommand nodeCommand, EntityCommandGrouper <Command.NodeCommand> .Cursor propertyCommands)
{
EntityUpdates.Builder nodePropertyUpdate = GatherUpdatesFromCommandsForNode(nodeId, nodeCommand, propertyCommands);
EntityUpdates entityUpdates = nodePropertyUpdate.Build();
// we need to materialize the IndexEntryUpdates here, because when we
// consume (later in separate thread) the store might have changed.
foreach (IndexEntryUpdate <SchemaDescriptor> update in _updateService.convertToIndexUpdates(entityUpdates, EntityType.NODE))
{
_updates.Add(update);
}
}
private void GatherUpdatesFor(long relationshipId, Command.RelationshipCommand relationshipCommand, EntityCommandGrouper <Command.RelationshipCommand> .Cursor propertyCommands)
{
EntityUpdates.Builder relationshipPropertyUpdate = GatherUpdatesFromCommandsForRelationship(relationshipId, relationshipCommand, propertyCommands);
EntityUpdates entityUpdates = relationshipPropertyUpdate.Build();
// we need to materialize the IndexEntryUpdates here, because when we
// consume (later in separate thread) the store might have changed.
foreach (IndexEntryUpdate <SchemaDescriptor> update in _updateService.convertToIndexUpdates(entityUpdates, EntityType.RELATIONSHIP))
{
_updates.Add(update);
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: protected boolean process(org.neo4j.storageengine.api.StorageRelationshipScanCursor cursor) throws FAILURE
protected internal override bool Process(StorageRelationshipScanCursor cursor)
{
int reltype = cursor.Type();
if (_propertyUpdatesVisitor != null && containsAnyEntityToken(_relationshipTypeIds, reltype))
{
// Notify the property update visitor
EntityUpdates.Builder updates = EntityUpdates.forEntity(cursor.EntityReference(), true).withTokens(reltype);
if (hasRelevantProperty(cursor, updates))
{
return(_propertyUpdatesVisitor.visit(updates.Build()));
}
}
return(false);
}
private EntityUpdates.Builder GatherUpdatesFromCommandsForRelationship(long relationshipId, Command.RelationshipCommand relationshipCommand, EntityCommandGrouper <Command.RelationshipCommand> .Cursor propertyCommands)
{
long reltypeBefore;
long reltypeAfter;
if (relationshipCommand != null)
{
reltypeBefore = relationshipCommand.Before.Type;
reltypeAfter = relationshipCommand.After.Type;
}
else
{
RelationshipRecord relationshipRecord = LoadRelationship(relationshipId);
reltypeBefore = reltypeAfter = relationshipRecord.Type;
}
bool complete = ProvidesCompleteListOfProperties(relationshipCommand);
EntityUpdates.Builder relationshipPropertyUpdates = EntityUpdates.forEntity(relationshipId, complete).withTokens(reltypeBefore).withTokensAfter(reltypeAfter);
_converter.convertPropertyRecord(propertyCommands, relationshipPropertyUpdates);
return(relationshipPropertyUpdates);
}
private EntityUpdates.Builder GatherUpdatesFromCommandsForNode(long nodeId, Command.NodeCommand nodeChanges, EntityCommandGrouper <Command.NodeCommand> .Cursor propertyCommandsForNode)
{
long[] nodeLabelsBefore;
long[] nodeLabelsAfter;
if (nodeChanges != null)
{
nodeLabelsBefore = parseLabelsField(nodeChanges.Before).get(_nodeStore);
nodeLabelsAfter = parseLabelsField(nodeChanges.After).get(_nodeStore);
}
else
{
/* If the node doesn't exist here then we've most likely encountered this scenario:
* - TX1: Node N exists and has property record P
* - rotate log
* - TX2: P gets changed
* - TX3: N gets deleted (also P, but that's irrelevant for this scenario)
* - N is persisted to disk for some reason
* - crash
* - recover
* - TX2: P has changed and updates to indexes are gathered. As part of that it tries to read
* the labels of N (which does not exist a.t.m.).
*
* We can actually (if we disregard any potential inconsistencies) just assume that
* if this happens and we're in recovery mode that the node in question will be deleted
* in an upcoming transaction, so just skip this update.
*/
NodeRecord nodeRecord = LoadNode(nodeId);
nodeLabelsBefore = nodeLabelsAfter = parseLabelsField(nodeRecord).get(_nodeStore);
}
// First get possible Label changes
bool complete = ProvidesCompleteListOfProperties(nodeChanges);
EntityUpdates.Builder nodePropertyUpdates = EntityUpdates.forEntity(nodeId, complete).withTokens(nodeLabelsBefore).withTokensAfter(nodeLabelsAfter);
// Then look for property changes
_converter.convertPropertyRecord(propertyCommandsForNode, nodePropertyUpdates);
return(nodePropertyUpdates);
}