@Override
public TitanEdge addEdge(TitanVertex outVertex, TitanVertex inVertex, TitanLabel label) {
verifyWriteAccess(outVertex, inVertex);
outVertex = ((InternalVertex) outVertex).it();
inVertex = ((InternalVertex) inVertex).it();
Preconditions.checkNotNull(label);
Lock uniqueLock = FakeLock.INSTANCE;
if (config.hasVerifyUniqueness()
&& (label.isUnique(Direction.OUT) || label.isUnique(Direction.IN)))
uniqueLock = getUniquenessLock(outVertex, label, inVertex);
uniqueLock.lock();
try {
// Check uniqueness
if (config.hasVerifyUniqueness()) {
if (label.isUnique(Direction.OUT)) {
Preconditions.checkArgument(
Iterables.isEmpty(
query(outVertex)
.includeHidden()
.type(label)
.direction(Direction.OUT)
.titanEdges()),
"An edge with the given type already exists on the out-vertex");
}
if (label.isUnique(Direction.IN)) {
Preconditions.checkArgument(
Iterables.isEmpty(
query(inVertex).includeHidden().type(label).direction(Direction.IN).titanEdges()),
"An edge with the given type already exists on the in-vertex");
}
}
StandardEdge edge =
new StandardEdge(
temporaryID.decrementAndGet(),
label,
(InternalVertex) outVertex,
(InternalVertex) inVertex,
ElementLifeCycle.New);
if (config.hasAssignIDsImmediately()) graph.assignID(edge);
connectRelation(edge);
return edge;
} finally {
uniqueLock.unlock();
}
}
public TitanProperty addPropertyInternal(TitanVertex vertex, TitanKey key, Object value) {
verifyWriteAccess(vertex);
vertex = ((InternalVertex) vertex).it();
Preconditions.checkNotNull(key);
value = AttributeUtil.verifyAttribute(key, value);
Lock uniqueLock = FakeLock.INSTANCE;
if (config.hasVerifyUniqueness() && (key.isUnique(Direction.OUT) || key.isUnique(Direction.IN)))
uniqueLock = getUniquenessLock(vertex, key, value);
uniqueLock.lock();
try {
// Check uniqueness
if (config.hasVerifyUniqueness()) {
if (key.isUnique(Direction.OUT)) {
Preconditions.checkArgument(
Iterables.isEmpty(
query(vertex).includeHidden().type(key).direction(Direction.OUT).properties()),
"An property with the given key already exists on the vertex and the property key is defined as out-unique");
}
if (key.isUnique(Direction.IN)) {
Preconditions.checkArgument(
Iterables.isEmpty(getVertices(key, value)),
"The given value is already used as a property and the property key is defined as in-unique");
}
}
StandardProperty prop =
new StandardProperty(
temporaryID.decrementAndGet(),
key,
(InternalVertex) vertex,
value,
ElementLifeCycle.New);
if (config.hasAssignIDsImmediately()) graph.assignID(prop);
connectRelation(prop);
return prop;
} finally {
uniqueLock.unlock();
}
}
@Override
public boolean containsType(String name) {
verifyOpen();
return (typeCache.containsKey(name)
|| !Iterables.isEmpty(getVertices(SystemKey.TypeName, name)));
}