// 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.reviewdb.client.Change;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.query.OperatorPredicate;
import com.google.gwtorm.server.OrmException;
import com.google.gwtorm.server.ResultSet;
import com.google.inject.Provider;
class ChangeIdPredicate extends OperatorPredicate<ChangeData> implements
ChangeDataSource {
private final Provider<ReviewDb> dbProvider;
ChangeIdPredicate(Provider<ReviewDb> dbProvider, String id) {
super(ChangeQueryBuilder.FIELD_CHANGE, id);
this.dbProvider = dbProvider;
}
@Override
public boolean match(final ChangeData cd) throws OrmException {
Change change = cd.change(dbProvider);
if (change == null) {
return false;
}
String key = change.getKey().get();
if (key.equals(getValue()) || key.startsWith(getValue())) {
return true;
}
return false;
}
@Override
public ResultSet<ChangeData> read() throws OrmException {
Change.Key a = new Change.Key(getValue());
Change.Key b = a.max();
return ChangeDataResultSet.change( //
dbProvider.get().changes().byKeyRange(a, b));
}
@Override
public boolean hasChange() {
return true;
}
@Override
public int getCost() {
return ChangeCosts.cost(ChangeCosts.CHANGES_SCAN, getCardinality());
}
@Override
public int getCardinality() {
return ChangeCosts.CARD_KEY;
}
}