1 /*
2 * Copyright 2010 The Apache Software Foundation
3 *
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20
21 package org.apache.hadoop.hbase.rest;
22
23 import java.io.IOException;
24 import java.util.Iterator;
25
26 import org.apache.hadoop.hbase.KeyValue;
27 import org.apache.hadoop.hbase.filter.Filter;
28 import org.apache.hadoop.hbase.rest.model.ScannerModel;
29
30 public abstract class ResultGenerator implements Iterator<KeyValue> {
31
32 public static ResultGenerator fromRowSpec(final String table,
33 final RowSpec rowspec, final Filter filter) throws IOException {
34 if (rowspec.isSingleRow()) {
35 return new RowResultGenerator(table, rowspec, filter);
36 } else {
37 return new ScannerResultGenerator(table, rowspec, filter);
38 }
39 }
40
41 public static Filter buildFilter(final String filter) throws Exception {
42 return ScannerModel.buildFilter(filter);
43 }
44
45 public abstract void putBack(KeyValue kv);
46
47 public abstract void close();
48 }