Examples with PhysicalSortProperty io.ordinate.engine.builder.PhysicalSortProperty used on opensource projects

Example 1 with PhysicalSortProperty

use of io.ordinate.engine.builder.PhysicalSortProperty in project Mycat2 by MyCATApache.

the class HeapTopNPlan method execute.

@Override
public Observable<VectorSchemaRoot> execute(RootContext rootContext) {
    Comparator<Record> recordComparator;
    if (physicalSortProperties.size() == 1) {
        recordComparator = physicalSortProperties.get(0).evaluateToSortComparator();
    } else {
        recordComparator = physicalSortProperties.get(0).evaluateToSortComparator();
        for (PhysicalSortProperty physicalSortProperty : physicalSortProperties.subList(1, physicalSortProperties.size())) {
            recordComparator = recordComparator.thenComparing(physicalSortProperty.evaluateToSortComparator());
        }
    }
    OutputLinq4jPhysicalPlan midPlan = OutputLinq4jPhysicalPlan.create(input);
    Observable<Object[]> observable = midPlan.executeToObject(rootContext);
    @NonNull Iterable<Record> objects = MycatRxJavaUtl.blockingIterable(observable.map(i -> RecordImpl.create(i)));
    Enumerable<Record> records = EnumerableDefaults.orderBy(Linq4j.asEnumerable(objects), i -> i, recordComparator, offset.getInt(null), fetch.getInt(null));
    return InputRecordPhysicalPlan.create(schema(), Observable.fromIterable(records)).execute(rootContext);
}