/*
* 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.Session;
import com.facebook.presto.metadata.Metadata;
import com.facebook.presto.sql.planner.Symbol;
import com.facebook.presto.sql.planner.plan.ApplyNode;
import com.facebook.presto.sql.planner.plan.PlanNode;
import com.facebook.presto.sql.planner.plan.ProjectNode;
import com.google.common.collect.ImmutableSet;
import java.util.Collection;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
import static com.google.common.base.MoreObjects.toStringHelper;
import static java.util.Objects.requireNonNull;
public class StrictAssignedSymbolsMatcher
extends BaseStrictSymbolsMatcher
{
private final Collection<? extends RvalueMatcher> getExpected;
public StrictAssignedSymbolsMatcher(Function<PlanNode, Set<Symbol>> getActual, Collection<? extends RvalueMatcher> getExpected)
{
super(getActual);
this.getExpected = requireNonNull(getExpected, "getExpected is null");
}
@Override
protected Set<Symbol> getExpectedSymbols(PlanNode node, Session session, Metadata metadata, SymbolAliases symbolAliases)
{
ImmutableSet.Builder<Symbol> expected = ImmutableSet.builder();
for (RvalueMatcher matcher : getExpected) {
Optional<Symbol> assigned = matcher.getAssignedSymbol(node, session, metadata, symbolAliases);
if (!assigned.isPresent()) {
return null;
}
expected.add(assigned.get());
}
return expected.build();
}
public static Function<PlanNode, Set<Symbol>> actualAssignments()
{
return node -> ((ProjectNode) node).getAssignments().getSymbols();
}
public static Function<PlanNode, Set<Symbol>> actualSubqueryAssignments()
{
return node -> ((ApplyNode) node).getSubqueryAssignments().getSymbols();
}
@Override
public String toString()
{
return toStringHelper(this)
.add("exact assignments", getExpected)
.toString();
}
}