| /* |
| * 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.aerospike.query; |
| |
| import org.apache.gora.aerospike.store.AerospikeStore; |
| import org.apache.gora.persistency.Persistent; |
| import org.apache.gora.query.Query; |
| import org.apache.gora.query.impl.ResultBase; |
| import org.apache.gora.store.DataStore; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| /** |
| * Aerospike specific implementation of the {@link org.apache.gora.query.Result} |
| * interface. |
| */ |
| public class AerospikeQueryResult<K, T extends Persistent> extends ResultBase<K, T> { |
| |
| private List<AerospikeResultRecord> resultRecords; |
| |
| private String[] fields; |
| |
| public AerospikeQueryResult(DataStore<K, T> dataStore, Query<K, T> query, |
| List<AerospikeResultRecord> recordsList, String[] fields) { |
| super(dataStore, query); |
| this.resultRecords = recordsList; |
| this.fields = fields; |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @return a float value representing progress of the job |
| * @throws IOException if there is an error obtaining progress |
| * @throws InterruptedException if progress stalls or is interrupted |
| */ |
| @Override |
| public float getProgress() throws IOException, InterruptedException { |
| if (resultRecords != null && resultRecords.size() > 0) { |
| return (float) offset / (float) resultRecords.size(); |
| } else { |
| return 0; |
| } |
| } |
| |
| /** |
| * Method to get the Aerospike specific data store |
| * |
| * @return the Aerospike data store instance |
| */ |
| @Override |
| public AerospikeStore getDataStore() { |
| return (AerospikeStore) super.getDataStore(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @return true if more elements exist |
| * @throws IOException if we reach non-existent result |
| */ |
| @Override |
| protected boolean nextInner() throws IOException { |
| if (offset < 0 || offset > (resultRecords.size() - 1)) { |
| return false; |
| } |
| key = (K) resultRecords.get((int) this.offset).getKey().userKey.getObject(); |
| persistent = (T) getDataStore() |
| .createPersistentInstance(resultRecords.get((int) this.offset).getRecord(), fields); |
| return true; |
| } |
| |
| @Override |
| public int size() { |
| // Fix query limit natively from Aerospike client |
| int totalSize = resultRecords.size(); |
| int intLimit = (int) this.limit; |
| return intLimit > 0 && totalSize > intLimit ? intLimit : totalSize; |
| } |
| } |