| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.gora.hbase.query; |
| |
| import java.io.IOException; |
| |
| import org.apache.gora.hbase.store.HBaseStore; |
| import org.apache.gora.persistency.Persistent; |
| import org.apache.gora.query.Query; |
| import org.apache.hadoop.hbase.client.Result; |
| import org.apache.hadoop.hbase.client.ResultScanner; |
| |
| /** |
| * Result of a query based on an HBase scanner. |
| */ |
| public class HBaseScannerResult<K, T extends Persistent> |
| extends HBaseResult<K, T> { |
| |
| private final ResultScanner scanner; |
| |
| public HBaseScannerResult(HBaseStore<K,T> dataStore, Query<K, T> query, |
| ResultScanner scanner) { |
| super(dataStore, query); |
| this.scanner = scanner; |
| } |
| |
| // do not clear object in scanner result |
| @Override |
| protected void clear() { } |
| |
| @Override |
| public boolean nextInner() throws IOException { |
| |
| Result result = scanner.next(); |
| if (result == null) { |
| return false; |
| } |
| |
| readNext(result); |
| |
| return true; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| scanner.close(); |
| } |
| |
| @Override |
| public float getProgress() throws IOException { |
| //TODO: if limit is set, we know how far we have gone |
| return 0; |
| } |
| |
| } |