/*
* 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 com.facebook.presto.sql.planner.assertions;
import com.facebook.presto.spi.block.SortOrder;
import com.facebook.presto.sql.planner.plan.WindowNode;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import java.util.List;
import java.util.Map;
import static com.google.common.base.MoreObjects.toStringHelper;
import static com.google.common.collect.ImmutableList.toImmutableList;
import static com.google.common.collect.ImmutableMap.toImmutableMap;
import static java.util.Objects.requireNonNull;
public class SpecificationProvider
implements ExpectedValueProvider<WindowNode.Specification>
{
private final List<SymbolAlias> partitionBy;
private final List<SymbolAlias> orderBy;
private final Map<SymbolAlias, SortOrder> orderings;
SpecificationProvider(
List<SymbolAlias> partitionBy,
List<SymbolAlias> orderBy,
Map<SymbolAlias, SortOrder> orderings)
{
this.partitionBy = ImmutableList.copyOf(requireNonNull(partitionBy, "partitionBy is null"));
this.orderBy = ImmutableList.copyOf(requireNonNull(orderBy, "orderBy is null"));
this.orderings = ImmutableMap.copyOf(requireNonNull(orderings, "orderings is null"));
}
@Override
public WindowNode.Specification getExpectedValue(SymbolAliases aliases)
{
return new WindowNode.Specification(
partitionBy
.stream()
.map(alias -> alias.toSymbol(aliases))
.collect(toImmutableList()),
orderBy
.stream()
.map(alias -> alias.toSymbol(aliases))
.collect(toImmutableList()),
orderings
.entrySet()
.stream()
.collect(toImmutableMap(entry -> entry.getKey().toSymbol(aliases), Map.Entry::getValue)));
}
@Override
public String toString()
{
return toStringHelper(this)
.add("partitionBy", this.partitionBy)
.add("orderBy", this.orderBy)
.add("orderings", this.orderings)
.toString();
}
}