| /* |
| * 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.jackrabbit.oak.plugins.index.lucene.spi; |
| |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| import org.apache.lucene.document.Field; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.Collections; |
| import java.util.Set; |
| /** |
| * Implementations of this interface would get callbacks while indexing documents. It's the responsibility |
| * of the implementation to exit as early as possible if it doesn't care about the document being indexed. |
| */ |
| public interface IndexFieldProvider { |
| /** |
| * Implementation which doesn't do anything useful... yet, abides with the contract. |
| */ |
| IndexFieldProvider DEFAULT = new IndexFieldProvider() { |
| @Override |
| public Iterable<Field> getAugmentedFields(String path, NodeState document, NodeState indexDefinition) { |
| return Collections.EMPTY_LIST; |
| } |
| |
| @Override |
| public Set<String> getSupportedTypes() { |
| return Collections.EMPTY_SET; |
| } |
| }; |
| |
| /** |
| * This method would get called while indexing a document. |
| * |
| * @param path path of the document being indexed |
| * @param document {@link NodeState} of the document being indexed |
| * @param indexDefinition {@link NodeState} of index definition |
| * @return {@link Iterable} of fields that are to be added to {@link org.apache.lucene.document.Document} being prepared |
| */ |
| @NotNull |
| Iterable<Field> getAugmentedFields(String path, NodeState document, NodeState indexDefinition); |
| |
| /** |
| * This method is used to find which node types are supported by the implementation. Based, on the index |
| * definition being used to index the document, only those implementations would get callback to |
| * {@link IndexFieldProvider#getAugmentedFields} which declare a matching node type. Note, node types are |
| * exact matches and do not support inheritance. |
| * @return {@link Set} of types supported by the implementation |
| */ |
| @NotNull |
| Set<String> getSupportedTypes(); |
| } |