com.google.gerrit.server.query.change.OrSource Maven / Gradle / Ivy
// Copyright (C) 2010 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.server.query.change;
import com.google.gerrit.index.query.FieldBundle;
import com.google.gerrit.index.query.OrPredicate;
import com.google.gerrit.index.query.Predicate;
import com.google.gerrit.reviewdb.client.Change;
import com.google.gwtorm.server.ListResultSet;
import com.google.gwtorm.server.OrmException;
import com.google.gwtorm.server.ResultSet;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class OrSource extends OrPredicate implements ChangeDataSource {
private int cardinality = -1;
public OrSource(Collection> that) {
super(that);
}
@Override
public ResultSet read() throws OrmException {
// TODO(spearce) This probably should be more lazy.
//
List r = new ArrayList<>();
Set have = new HashSet<>();
for (Predicate p : getChildren()) {
if (p instanceof ChangeDataSource) {
for (ChangeData cd : ((ChangeDataSource) p).read()) {
if (have.add(cd.getId())) {
r.add(cd);
}
}
} else {
throw new OrmException("No ChangeDataSource: " + p);
}
}
return new ListResultSet<>(r);
}
@Override
public ResultSet readRaw() throws OrmException {
throw new UnsupportedOperationException("not implemented");
}
@Override
public boolean hasChange() {
for (Predicate p : getChildren()) {
if (!(p instanceof ChangeDataSource) || !((ChangeDataSource) p).hasChange()) {
return false;
}
}
return true;
}
@Override
public int getCardinality() {
if (cardinality < 0) {
cardinality = 0;
for (Predicate p : getChildren()) {
if (p instanceof ChangeDataSource) {
cardinality += ((ChangeDataSource) p).getCardinality();
}
}
}
return cardinality;
}
}