| /* |
| * 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.rest.schema.analysis; |
| import java.io.IOException; |
| import java.util.Map; |
| |
| import org.apache.lucene.analysis.util.ResourceLoader; |
| import org.apache.lucene.analysis.util.ResourceLoaderAware; |
| import org.apache.lucene.analysis.util.TokenFilterFactory; |
| import org.apache.solr.core.SolrResourceLoader; |
| import org.apache.solr.rest.ManagedResource; |
| import org.apache.solr.rest.ManagedResourceObserver; |
| |
| /** |
| * Abstract based class for implementing TokenFilterFactory objects that |
| * are managed by the REST API. Specifically, this base class is useful |
| * for token filters that have configuration and data that needs to be |
| * updated programmatically, such as to support a UI for adding synonyms. |
| * @since 4.8.0 |
| */ |
| public abstract class BaseManagedTokenFilterFactory extends TokenFilterFactory |
| implements ResourceLoaderAware, ManagedResourceObserver |
| { |
| |
| protected String handle; |
| |
| protected BaseManagedTokenFilterFactory(Map<String,String> args) { |
| super(args); |
| handle = require(args, "managed"); |
| |
| if (!args.isEmpty()) { |
| throw new IllegalArgumentException("Unknown parameters: " + args); |
| } |
| } |
| |
| /** |
| * Registers an endpoint with the RestManager so that this component can be |
| * managed using the REST API. This method can be invoked before all the |
| * resources the {@link org.apache.solr.rest.RestManager} needs to initialize |
| * a {@link ManagedResource} are available, so this simply registers the need |
| * to be managed at a specific endpoint and lets the RestManager deal with |
| * initialization when ready. |
| */ |
| @Override |
| public void inform(ResourceLoader loader) throws IOException { |
| SolrResourceLoader solrResourceLoader = (SolrResourceLoader)loader; |
| |
| // here we want to register that we need to be managed |
| // at a specified path and the ManagedResource impl class |
| // that should be used to manage this component |
| solrResourceLoader.getManagedResourceRegistry(). |
| registerManagedResource(getResourceId(), getManagedResourceImplClass(), this); |
| } |
| |
| /** |
| * Let the concrete analysis component decide the path it wishes to be managed at. |
| */ |
| protected abstract String getResourceId(); |
| |
| /** |
| * Let the concrete analysis component determine the ManagedResource implementation. |
| * As there can be many instances of the same analysis component in a schema, this |
| * class should not presume to create ManagedResource. For instance, there may be |
| * 10 instances of the ManagedStopFilterFactory that use the same set of English |
| * stop words and we don't want 10 copies of the ManagedWordSetResource in the same core. |
| */ |
| protected abstract Class<? extends ManagedResource> getManagedResourceImplClass(); |
| } |