| // 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.ListResultSet; |
| import com.google.gwtorm.server.OrmException; |
| import com.google.gwtorm.server.ResultSet; |
| import com.google.inject.Provider; |
| |
| import java.util.Collections; |
| |
| class LegacyChangeIdPredicate extends OperatorPredicate<ChangeData> implements |
| ChangeDataSource { |
| private final Provider<ReviewDb> db; |
| private final Change.Id id; |
| |
| LegacyChangeIdPredicate(Provider<ReviewDb> db, Change.Id id) { |
| super(ChangeQueryBuilder.FIELD_CHANGE, id.toString()); |
| this.db = db; |
| this.id = id; |
| } |
| |
| @Override |
| public boolean match(final ChangeData object) { |
| return id.equals(object.getId()); |
| } |
| |
| @Override |
| public ResultSet<ChangeData> read() throws OrmException { |
| Change c = db.get().changes().get(id); |
| if (c != null) { |
| return new ListResultSet<ChangeData>( // |
| Collections.singletonList(new ChangeData(c))); |
| } else { |
| return new ListResultSet<ChangeData>(Collections.<ChangeData> emptyList()); |
| } |
| } |
| |
| @Override |
| public boolean hasChange() { |
| return true; |
| } |
| |
| @Override |
| public int getCardinality() { |
| return 1; |
| } |
| |
| @Override |
| public int getCost() { |
| return ChangeCosts.IDS_MEMORY; |
| } |
| } |