io.trino.plugin.tpch.util.PredicateUtils 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.plugin.tpch.util;
import io.trino.plugin.tpch.TpchColumnHandle;
import io.trino.spi.connector.ColumnHandle;
import io.trino.spi.predicate.Domain;
import io.trino.spi.predicate.NullableValue;
import io.trino.spi.predicate.TupleDomain;
import java.util.function.Predicate;
public final class PredicateUtils
{
private PredicateUtils() {}
public static Predicate convertToPredicate(TupleDomain predicate, TpchColumnHandle columnHandle)
{
Domain columnDomain = predicate.getDomains()
.map(domains -> domains.getOrDefault(columnHandle, Domain.all(columnHandle.type())))
.orElseGet(() -> Domain.none(columnHandle.type()));
return nullableValue -> columnDomain.includesNullableValue(nullableValue.getValue());
}
public static TupleDomain filterOutColumnFromPredicate(TupleDomain predicate, TpchColumnHandle columnHandle)
{
return filterColumns(predicate, tpchColumnHandle -> !tpchColumnHandle.equals(columnHandle));
}
private static TupleDomain filterColumns(TupleDomain predicate, Predicate filterPredicate)
{
return predicate.filter((columnHandle, domain) -> filterPredicate.test((TpchColumnHandle) columnHandle));
}
}