| /* |
| * 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.core; |
| |
| import org.apache.solr.search.SolrIndexSearcher; |
| import org.apache.solr.util.plugin.NamedListInitializedPlugin; |
| |
| /** |
| * |
| */ |
| public interface SolrEventListener extends NamedListInitializedPlugin{ |
| |
| public void postCommit(); |
| |
| public void postSoftCommit(); |
| |
| /** The searchers passed here are only guaranteed to be valid for the duration |
| * of this method call, so care should be taken not to spawn threads or asynchronous |
| * tasks with references to these searchers. |
| * <p> |
| * Implementations should add the {@link org.apache.solr.common.params.EventParams#EVENT} parameter and set it to a value of either: |
| * <ul> |
| * <li>{@link org.apache.solr.common.params.EventParams#FIRST_SEARCHER} - First Searcher event</li> |
| * <li>{@link org.apache.solr.common.params.EventParams#NEW_SEARCHER} - New Searcher event</li> |
| * </ul> |
| * |
| * Sample: |
| * <pre> |
| if (currentSearcher != null) { |
| nlst.add(CommonParams.EVENT, CommonParams.NEW_SEARCHER); |
| } else { |
| nlst.add(CommonParams.EVENT, CommonParams.FIRST_SEARCHER); |
| } |
| * |
| * </pre> |
| * |
| * @see org.apache.solr.core.AbstractSolrEventListener#addEventParms(org.apache.solr.search.SolrIndexSearcher, org.apache.solr.common.util.NamedList) |
| * |
| * @param newSearcher The new {@link org.apache.solr.search.SolrIndexSearcher} to use |
| * @param currentSearcher The existing {@link org.apache.solr.search.SolrIndexSearcher}. null if this is a firstSearcher event. |
| * |
| */ |
| public void newSearcher(SolrIndexSearcher newSearcher, SolrIndexSearcher currentSearcher); |
| |
| } |