public void removeRelation(InternalRelation relation) {
Preconditions.checkArgument(!relation.isRemoved());
relation = relation.it();
// Delete from Vertex
for (int i = 0; i < relation.getLen(); i++) {
relation.getVertex(i).removeRelation(relation);
}
// Update transaction data structures
if (relation.isNew()) {
addedRelations.remove(relation);
if (isVertexIndexProperty(relation)) newVertexIndexEntries.remove((TitanProperty) relation);
} else {
Preconditions.checkArgument(relation.isLoaded());
if (deletedRelations == EMPTY_DELETED_RELATIONS) {
if (config.isSingleThreaded()) {
deletedRelations = new HashMap<Long, InternalRelation>();
} else {
synchronized (this) {
if (deletedRelations == EMPTY_DELETED_RELATIONS)
deletedRelations = new ConcurrentHashMap<Long, InternalRelation>();
}
}
}
deletedRelations.put(Long.valueOf(relation.getID()), relation);
}
}
private void connectRelation(InternalRelation r) {
for (int i = 0; i < r.getLen(); i++) {
boolean success = r.getVertex(i).addRelation(r);
if (!success) throw new AssertionError("Could not connect relation: " + r);
}
addedRelations.add(r);
if (isVertexIndexProperty(r)) newVertexIndexEntries.add((TitanProperty) r);
}