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1   /*
2    *
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *     http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   */
19  
20  package org.apache.hadoop.hbase.regionserver;
21  
22  import org.apache.hadoop.hbase.regionserver.KeyValueScanner;
23  import org.apache.hadoop.hbase.util.CollectionBackedScanner;
24  import org.apache.hadoop.hbase.KeyValue;
25  
26  import java.util.ArrayList;
27  import java.util.List;
28  
29  /**
30   * A fixture that implements and presents a KeyValueScanner.
31   * It takes a list of key/values which is then sorted according
32   * to the provided comparator, and then the whole thing pretends
33   * to be a store file scanner.
34   */
35  public class KeyValueScanFixture extends CollectionBackedScanner {
36    public KeyValueScanFixture(KeyValue.KVComparator comparator,
37                               KeyValue... incData) {
38      super(comparator, incData);
39    }
40  
41    public static List<KeyValueScanner> scanFixture(KeyValue[] ... kvArrays) {
42      ArrayList<KeyValueScanner> scanners = new ArrayList<KeyValueScanner>();
43      for (KeyValue [] kvs : kvArrays) {
44        scanners.add(new KeyValueScanFixture(KeyValue.COMPARATOR, kvs));
45      }
46      return scanners;
47    }
48  }