Line data    Source code

       1             : // Copyright (C) 2016 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.server.query.change;
      16             : 
      17             : import com.google.gerrit.index.SchemaFieldDefs.SchemaField;
      18             : import com.google.gerrit.index.query.IndexPredicate;
      19             : import com.google.gerrit.index.query.Predicate;
      20             : 
      21             : /** Predicate that is mapped to a field in the change index. */
      22             : public class ChangeIndexPredicate extends IndexPredicate<ChangeData> {
      23             :   /**
      24             :    * Returns an index predicate that matches no changes in the index.
      25             :    *
      26             :    * <p>This predicate should be used in preference to a non-index predicate (such as {@code
      27             :    * Predicate.not(Predicate.any())}), since it can be matched efficiently against the index.
      28             :    *
      29             :    * @return an index predicate matching no changes.
      30             :    */
      31             :   public static Predicate<ChangeData> none() {
      32           5 :     return ChangeStatusPredicate.NONE;
      33             :   }
      34             : 
      35             :   protected ChangeIndexPredicate(SchemaField<ChangeData, ?> def, String value) {
      36         113 :     super(def, value);
      37         113 :   }
      38             : 
      39             :   protected ChangeIndexPredicate(SchemaField<ChangeData, ?> def, String name, String value) {
      40          68 :     super(def, name, value);
      41          68 :   }
      42             : }