| /* |
| * 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.solr.handler.dataimport; |
| |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| public abstract class DIHWriterBase implements DIHWriter { |
| protected String keyFieldName; |
| protected Set<Object> deltaKeys = null; |
| |
| @Override |
| public void setDeltaKeys(Set<Map<String,Object>> passedInDeltaKeys) { |
| deltaKeys = new HashSet<>(); |
| for (Map<String,Object> aMap : passedInDeltaKeys) { |
| if (aMap.size() > 0) { |
| Object key = null; |
| if (keyFieldName != null) { |
| key = aMap.get(keyFieldName); |
| } else { |
| key = aMap.entrySet().iterator().next(); |
| } |
| if (key != null) { |
| deltaKeys.add(key); |
| } |
| } |
| } |
| } |
| } |