| /* |
| * 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.update.processor; |
| |
| import org.apache.solr.common.SolrException; |
| import static org.apache.solr.common.SolrException.ErrorCode.*; |
| import org.apache.solr.common.util.NamedList; |
| import org.apache.solr.request.SolrQueryRequest; |
| import org.apache.solr.response.SolrQueryResponse; |
| |
| /** |
| * <p> |
| * An update processor that adds a constant default value to any document |
| * being added that does not already have a value in the specified field. |
| * </p> |
| * |
| * <p> |
| * In the example configuration below, if a document does not contain a value |
| * in the <code>price</code> and/or <code>type</code> fields, it will be given |
| * default values of <code>0.0</code> and/or <code>unknown</code> |
| * (respectively). |
| * <br> |
| * |
| * <pre class="prettyprint"> |
| * <processor class="solr.DefaultValueUpdateProcessorFactory"> |
| * <str name="fieldName">price</str> |
| * <float name="value">0.0</float> |
| * </processor> |
| * <processor class="solr.DefaultValueUpdateProcessorFactory"> |
| * <str name="fieldName">type</str> |
| * <str name="value">unknown</str> |
| * </processor> |
| * </pre> |
| * @since 4.0.0 |
| */ |
| public class DefaultValueUpdateProcessorFactory |
| extends AbstractDefaultValueUpdateProcessorFactory { |
| |
| protected Object defaultValue = null; |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public void init(@SuppressWarnings({"rawtypes"})NamedList args) { |
| |
| Object obj = args.remove("value"); |
| if (null == obj) { |
| throw new SolrException |
| (SERVER_ERROR, "'value' init param must be specified and non-null"); |
| } else { |
| defaultValue = obj; |
| } |
| |
| super.init(args); |
| } |
| |
| @Override |
| public UpdateRequestProcessor getInstance(SolrQueryRequest req, |
| SolrQueryResponse rsp, |
| UpdateRequestProcessor next ) { |
| return new DefaultValueUpdateProcessor(fieldName, next) { |
| @Override |
| public Object getDefaultValue() { return defaultValue; } |
| }; |
| } |
| |
| } |
| |
| |
| |