| /* |
| * 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 java.util.UUID; |
| import java.util.Locale; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.solr.common.util.NamedList; |
| import org.apache.solr.request.SolrQueryRequest; |
| import org.apache.solr.response.SolrQueryResponse; |
| import org.apache.solr.schema.SchemaField; |
| |
| |
| /** |
| * <p> |
| * An update processor that adds a newly generated <code>UUID</code> 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>id</code> field, a new <code>UUID</code> will be generated |
| * and added as the value of that field. |
| * <br> |
| * |
| * <pre class="prettyprint"> |
| * <processor class="solr.UUIDUpdateProcessorFactory"> |
| * <str name="fieldName">id</str> |
| * </processor> |
| * </pre> |
| * |
| * |
| * <p> |
| * You can also invoke the processor with request handler param(s) |
| * as <code>uuid.fieldname</code> with <code>processor=uuid</code> |
| * |
| * curl -X POST -H Content-Type: application/json |
| * http://localhost:8983/solr/test/update/json/docs?processor=uuid;ampersand;uuid.fieldName=id;ampersand;commit=true |
| * --data-binary {"id":"1","title": "titleA"} |
| * |
| * NOTE: The param(s) provided in request handler will override / supersede processor's config. |
| * |
| * If field name is omitted in processor configuration and not provided in request handler param(s), |
| * then @{link org.apache.solr.schema.IndexSchema#getUniqueKeyField()} |
| * is used as field and a new <code>UUID</code> will be generated |
| * and added as the value of that field. The field type of the uniqueKeyField |
| * must be anything which accepts a string or UUID value. |
| * |
| * |
| * |
| * @see UUID |
| * @since 4.0.0 |
| */ |
| public class UUIDUpdateProcessorFactory extends UpdateRequestProcessorFactory { |
| |
| private static final String PREFIX_PARAM = "uuid."; |
| public static final String NAME = "uuid"; |
| private static final String FIELD_PARAM = "fieldName"; |
| |
| |
| protected String fieldName = null; |
| |
| @SuppressWarnings("unchecked") |
| public void init(@SuppressWarnings({"rawtypes"})NamedList args) { |
| |
| Object obj = args.remove(FIELD_PARAM); |
| if (null != obj) { |
| fieldName = obj.toString(); |
| } |
| } |
| |
| public UpdateRequestProcessor getInstance(SolrQueryRequest req, |
| SolrQueryResponse rsp, |
| UpdateRequestProcessor next ) { |
| String fieldName = this.fieldName; |
| |
| String fname = req.getParams().get(PREFIX_PARAM+FIELD_PARAM); |
| if (!StringUtils.isEmpty(fname)) { |
| fieldName = fname; |
| } |
| |
| if (StringUtils.isEmpty(fieldName)) { |
| SchemaField schemaField = req.getSchema().getUniqueKeyField(); |
| fieldName = schemaField.getName(); |
| } |
| |
| return new AbstractDefaultValueUpdateProcessorFactory.DefaultValueUpdateProcessor(fieldName, next) { |
| @Override |
| public Object getDefaultValue() { |
| return UUID.randomUUID().toString().toLowerCase(Locale.ROOT); |
| } |
| }; |
| } |
| } |
| |
| |
| |