io.trino.operator.join.TrackingLookupSourceSupplier Maven / Gradle / Ivy
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.trino.operator.join;
import java.util.function.Supplier;
import static java.util.Objects.requireNonNull;
public interface TrackingLookupSourceSupplier
{
LookupSource getLookupSource();
OuterPositionIterator getOuterPositionIterator();
static TrackingLookupSourceSupplier nonTracking(Supplier lookupSourceSupplier)
{
requireNonNull(lookupSourceSupplier, "lookupSourceSupplier is null");
return new TrackingLookupSourceSupplier()
{
@Override
public LookupSource getLookupSource()
{
return lookupSourceSupplier.get();
}
@Override
public OuterPositionIterator getOuterPositionIterator()
{
throw new UnsupportedOperationException();
}
};
}
}