/* situation options:
* 1. ID:*:*
* 2. URN:*:*
* 3. ID:URN:*
* 4. URN:ID:*
*/
@Override
public Iterator<Node[]> queryVersioning(
Node[] query, int limit, String keyspace, int situation, String ID, String URN)
throws StoreException {
Iterator<Node[]> it = super.query(query, limit, keyspace);
if (it != null) {
return it;
}
String columnFamily = CF_S_PO;
int[] map = _maps.get(columnFamily);
Node[] q = Util.reorder(query, map);
// _log.info("query: " + Nodes.toN3(query) + " idx: " + columnFamily + " reordered: " +
// Nodes.toN3(q));
if (isVariable(q[0])) {
// scan over all
throw new UnsupportedOperationException("triple patterns must have at least one constant");
} else {
// SPO cf has one node as key and two nodes as colname
Node[] nxKey = getQueryKeyBySituation(q[0], situation);
String key_ID = nxKey[0].toN3();
int colNameTupleLength = 2;
// check ID and get the latest if neccessary
if (ID != null && ID.contains("last") && URN != null)
/*ID = String.valueOf(lastVersioningNumber(keyspace,q[0].toString()
, URN));*/
ID = lastCommitTxID(keyspace, q[0].toString());
/* TM: query composite */
SliceQuery<String, Composite, String> query_comp =
HFactory.createSliceQuery(
getExistingKeyspace(keyspace),
StringSerializer.get(),
CompositeSerializer.get(),
StringSerializer.get());
Composite columnStart = getCompositeStart(ID, URN, situation, q);
Composite columnEnd = getCompositeEnd(ID, URN, situation, q);
query_comp.setColumnFamily(columnFamily).setKey(key_ID);
/*_log.info("QUERY COMPOSITE ...on CF " + columnFamily + "..... on key " + key_ID);
_log.info("QUERY COMPOSITE " + Nodes.toN3(q) + "--" + Nodes.toN3(new Node[] {q[1], q[2]})) ;
_log.info("QUERY COMPOSITE situation: " + situation );*/
// use the extended map
map = _maps_ext.get(columnFamily);
it =
new ColumnSliceIteratorComposite<String>(
query_comp, nxKey, columnStart, columnEnd, map, limit, colNameTupleLength, query);
}
return it;
}
public <V> void setComposite(N columnName, Composite composite) {
addInsertion(columnName, composite, CompositeSerializer.get(), globalTtl);
}