| /* |
| * 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.eagle.log.entity.index; |
| |
| import org.apache.eagle.log.entity.HBaseInternalLogHelper; |
| import org.apache.eagle.log.entity.LogReader; |
| import org.apache.eagle.log.entity.SearchCondition; |
| import org.apache.eagle.log.entity.meta.EntityDefinition; |
| import org.apache.eagle.log.entity.meta.IndexDefinition; |
| import org.apache.eagle.log.entity.meta.IndexDefinition.IndexType; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| public class UniqueIndexStreamReader extends IndexStreamReader { |
| public UniqueIndexStreamReader(IndexDefinition indexDef, SearchCondition condition) { |
| super(indexDef, condition, new ArrayList<byte[]>()); |
| final IndexType type = indexDef.canGoThroughIndex(condition.getQueryExpression(), indexRowkeys); |
| if (!IndexType.UNIQUE_INDEX.equals(type)) { |
| throw new IllegalArgumentException("This query can't go through index: " + condition.getQueryExpression()); |
| } |
| } |
| |
| public UniqueIndexStreamReader(IndexDefinition indexDef, SearchCondition condition, List<byte[]> indexRowkeys) { |
| super(indexDef, condition, indexRowkeys); |
| } |
| |
| @Override |
| protected LogReader createIndexReader() { |
| final EntityDefinition entityDef = indexDef.getEntityDefinition(); |
| // final |
| byte[][] outputQualifiers = null; |
| if(!condition.isOutputAll()) { |
| outputQualifiers = HBaseInternalLogHelper.getOutputQualifiers(entityDef, condition.getOutputFields()); |
| } |
| return new UniqueIndexLogReader(indexDef, indexRowkeys, outputQualifiers, condition.getFilter()); |
| } |
| } |