hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/KeyValueScanFixture.java

   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 java.util.ArrayList;
  23 import java.util.List;
  24
  25 import org.apache.hadoop.hbase.Cell;
  26 import org.apache.hadoop.hbase.CellComparator;
  27 import org.apache.hadoop.hbase.KeyValue;
  28 import org.apache.hadoop.hbase.util.CollectionBackedScanner;
  29
  30 /**
  31  * A fixture that implements and presents a KeyValueScanner.
  32  * It takes a list of key/values which is then sorted according
  33  * to the provided comparator, and then the whole thing pretends
  34  * to be a store file scanner.
  35  */
  36 public class KeyValueScanFixture extends CollectionBackedScanner {
  37   public KeyValueScanFixture(CellComparator comparator, Cell... cells) {
  38     super(comparator, cells);
  39   }
  40
  41   public static List<KeyValueScanner> scanFixture(KeyValue[] ... kvArrays) {
  42     ArrayList<KeyValueScanner> scanners = new ArrayList<>();
  43     for (KeyValue [] kvs : kvArrays) {
  44       scanners.add(new KeyValueScanFixture(CellComparator.getInstance(), kvs));
  45     }
  46     return scanners;
  47   }
  48 }