| using Lucene.Net.Index; |
| using Lucene.Net.Search.Highlight; |
| using System.IO; |
| |
| namespace Lucene.Net.Search.VectorHighlight |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// <see cref="IFragmentsBuilder"/> is an interface for fragments (snippets) builder classes. |
| /// A <see cref="IFragmentsBuilder"/> class can be plugged in to |
| /// <see cref="FastVectorHighlighter"/>. |
| /// </summary> |
| public interface IFragmentsBuilder |
| { |
| /// <summary> |
| /// create a fragment. |
| /// </summary> |
| /// <param name="reader"><see cref="IndexReader"/> of the index</param> |
| /// <param name="docId">document id to be highlighted</param> |
| /// <param name="fieldName">field of the document to be highlighted</param> |
| /// <param name="fieldFragList"><see cref="FieldFragList"/> object</param> |
| /// <returns>a created fragment or null when no fragment created</returns> |
| /// <exception cref="IOException">If there is a low-level I/O error</exception> |
| string CreateFragment(IndexReader reader, int docId, string fieldName, |
| FieldFragList fieldFragList); |
| |
| /// <summary> |
| /// create multiple fragments. |
| /// </summary> |
| /// <param name="reader"><see cref="IndexReader"/> of the index</param> |
| /// <param name="docId">document id to be highlighter</param> |
| /// <param name="fieldName">field of the document to be highlighted</param> |
| /// <param name="fieldFragList"><see cref="FieldFragList"/> object</param> |
| /// <param name="maxNumFragments">maximum number of fragments</param> |
| /// <returns> |
| /// created fragments or null when no fragments created. |
| /// size of the array can be less than <paramref name="maxNumFragments"/> |
| /// </returns> |
| /// <exception cref="IOException">If there is a low-level I/O error</exception> |
| string[] CreateFragments(IndexReader reader, int docId, string fieldName, |
| FieldFragList fieldFragList, int maxNumFragments); |
| |
| /// <summary> |
| /// create a fragment. |
| /// </summary> |
| /// <param name="reader"><see cref="IndexReader"/> of the index</param> |
| /// <param name="docId">document id to be highlighted</param> |
| /// <param name="fieldName">field of the document to be highlighted</param> |
| /// <param name="fieldFragList"><see cref="FieldFragList"/> object</param> |
| /// <param name="preTags">pre-tags to be used to highlight terms</param> |
| /// <param name="postTags">post-tags to be used to highlight terms</param> |
| /// <param name="encoder">an encoder that generates encoded text</param> |
| /// <returns>a created fragment or null when no fragment created</returns> |
| /// <exception cref="IOException">If there is a low-level I/O error</exception> |
| string CreateFragment(IndexReader reader, int docId, string fieldName, |
| FieldFragList fieldFragList, string[] preTags, string[] postTags, |
| IEncoder encoder); |
| |
| /// <summary> |
| /// create multiple fragments. |
| /// </summary> |
| /// <param name="reader"><see cref="IndexReader"/> of the index</param> |
| /// <param name="docId">document id to be highlighter</param> |
| /// <param name="fieldName">field of the document to be highlighted</param> |
| /// <param name="fieldFragList"><see cref="FieldFragList"/> object</param> |
| /// <param name="maxNumFragments">maximum number of fragments</param> |
| /// <param name="preTags">pre-tags to be used to highlight terms</param> |
| /// <param name="postTags">post-tags to be used to highlight terms</param> |
| /// <param name="encoder">an encoder that generates encoded text</param> |
| /// <returns> |
| /// created fragments or null when no fragments created. |
| /// size of the array can be less than <paramref name="maxNumFragments"/> |
| /// </returns> |
| /// <exception cref="IOException">If there is a low-level I/O error</exception> |
| string[] CreateFragments(IndexReader reader, int docId, string fieldName, |
| FieldFragList fieldFragList, int maxNumFragments, string[] preTags, string[] postTags, |
| IEncoder encoder); |
| } |
| } |