| // 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; |
| } |
| } |