private static void writeAttribute(DataOutput out, TitanProperty property) {
Object attribute = property.getAttribute();
TitanKey key = (TitanKey) property.getType();
assert attribute != null;
assert key.getDataType().isInstance(attribute);
if (hasGenericDataType(key)) {
out.writeClassAndObject(attribute);
} else {
out.writeObjectNotNull(attribute);
}
}
private void lockKeyedProperty(TitanProperty prop, StoreMutator mutator) throws StorageException {
TitanKey pt = prop.getPropertyKey();
assert pt.isSimple();
if (pt.hasIndex() && pt.isUnique()) {
if (prop.isNew()) {
mutator.acquireIndexLock(getIndexKey(prop.getAttribute()), getKeyedIndexColumn(pt), null);
} else {
assert prop.isRemoved();
mutator.acquireIndexLock(
getIndexKey(prop.getAttribute()), getKeyedIndexColumn(pt), getIndexValue(prop));
}
}
}
private void addIndexEntry(TitanProperty prop, StoreMutator mutator) throws StorageException {
TitanKey pt = prop.getPropertyKey();
assert pt.isSimple();
if (pt.hasIndex()) {
if (pt.isUnique()) {
mutator.mutateIndex(
getIndexKey(prop.getAttribute()),
Lists.newArrayList(new Entry(getKeyedIndexColumn(pt), getIndexValue(prop))),
null);
} else {
mutator.mutateIndex(
getIndexKey(prop.getAttribute()),
Lists.newArrayList(new Entry(getIndexColumn(pt, prop.getID()), getIndexValue(prop))),
null);
}
}
}
private ByteBuffer getIndexValue(TitanProperty prop) {
assert prop.getType().isSimple();
return VariableLong.positiveByteBuffer(prop.getVertex().getID());
}