public QueryResult queryOnPartition(String mapName, Predicate predicate, int partitionId) {
final QueryResult result = new QueryResult();
List<QueryEntry> list = new LinkedList<QueryEntry>();
PartitionContainer container = getPartitionContainer(partitionId);
RecordStore recordStore = container.getRecordStore(mapName);
Map<Data, Record> records = recordStore.getReadonlyRecordMap();
SerializationService serializationService = nodeEngine.getSerializationService();
final PagingPredicate pagingPredicate =
predicate instanceof PagingPredicate ? (PagingPredicate) predicate : null;
Comparator<Map.Entry> wrapperComparator = SortingUtil.newComparator(pagingPredicate);
for (Record record : records.values()) {
Data key = record.getKey();
Object value = record.getValue();
if (value == null) {
continue;
}
QueryEntry queryEntry = new QueryEntry(serializationService, key, key, value);
if (predicate.apply(queryEntry)) {
if (pagingPredicate != null) {
Map.Entry anchor = pagingPredicate.getAnchor();
if (anchor != null
&& SortingUtil.compare(
pagingPredicate.getComparator(),
pagingPredicate.getIterationType(),
anchor,
queryEntry)
>= 0) {
continue;
}
}
list.add(queryEntry);
}
}
if (pagingPredicate != null) {
Collections.sort(list, wrapperComparator);
if (list.size() > pagingPredicate.getPageSize()) {
list = list.subList(0, pagingPredicate.getPageSize());
}
}
for (QueryEntry entry : list) {
result.add(
new QueryResultEntryImpl(entry.getKeyData(), entry.getKeyData(), entry.getValueData()));
}
return result;
}
private List<Integer> getMemberPartitions() {
InternalPartitionService partitionService = nodeEngine.getPartitionService();
List<Integer> partitions = partitionService.getMemberPartitions(nodeEngine.getThisAddress());
return Collections.unmodifiableList(partitions);
}
public Map<String, MapContainer> getMapContainers() {
return Collections.unmodifiableMap(mapContainers);
}