com.google.gerrit.index.query.OrCardinalPredicate Maven / Gradle / Ivy
// Copyright (C) 2022 The Android Open Source Project
//
// 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.google.gerrit.index.query;
import java.util.Collection;
import java.util.Optional;
public class OrCardinalPredicate extends OrPredicate implements HasCardinality {
private final int cardinality;
public OrCardinalPredicate(Collection> that) {
super(that);
Optional> nonHasCardinality =
getChildren().stream().filter(p -> !(p instanceof HasCardinality)).findAny();
if (nonHasCardinality.isPresent()) {
throw new IllegalArgumentException("No HasCardinality: " + nonHasCardinality.get());
}
int aggregateCardinality = 0;
for (Predicate p : getChildren()) {
if (p instanceof HasCardinality) {
aggregateCardinality += ((HasCardinality) p).getCardinality();
}
}
cardinality = aggregateCardinality;
}
@Override
public Predicate copy(Collection> children) {
return new OrCardinalPredicate<>(children);
}
@Override
public int getCardinality() {
return cardinality;
}
}