| using System; |
| |
| namespace Lucene.Net.Index |
| { |
| /* |
| * 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. |
| */ |
| |
| using AttributeSource = Lucene.Net.Util.AttributeSource; |
| using DocIdSetIterator = Lucene.Net.Search.DocIdSetIterator; |
| |
| // LUCENENET specific - converted constants from DocsEnum |
| // into a flags enum. |
| [Flags] |
| public enum DocsFlags |
| { |
| /// <summary> |
| /// Flag to pass to <see cref="TermsEnum.Docs(Util.IBits, DocsEnum, DocsFlags)"/> if you don't |
| /// require term frequencies in the returned enum. |
| /// </summary> |
| NONE = 0x0, |
| |
| /// <summary> |
| /// Flag to pass to <see cref="TermsEnum.Docs(Util.IBits, DocsEnum, DocsFlags)"/> |
| /// if you require term frequencies in the returned enum. |
| /// </summary> |
| FREQS = 0x1 |
| } |
| |
| /// <summary> |
| /// Iterates through the documents and term freqs. |
| /// NOTE: you must first call <see cref="DocIdSetIterator.NextDoc()"/> before using |
| /// any of the per-doc methods. |
| /// </summary> |
| public abstract class DocsEnum : DocIdSetIterator |
| { |
| // LUCENENET specific - made flags into their own [Flags] enum named DocsFlags and de-nested from this type |
| |
| private AttributeSource atts = null; |
| |
| /// <summary> |
| /// Sole constructor. (For invocation by subclass |
| /// constructors, typically implicit.) |
| /// </summary> |
| protected DocsEnum() |
| { |
| } |
| |
| /// <summary> |
| /// Returns term frequency in the current document, or 1 if the field was |
| /// indexed with <see cref="IndexOptions.DOCS_ONLY"/>. Do not call this before |
| /// <see cref="DocIdSetIterator.NextDoc()"/> is first called, nor after <see cref="DocIdSetIterator.NextDoc()"/> returns |
| /// <see cref="DocIdSetIterator.NO_MORE_DOCS"/>. |
| /// |
| /// <para/> |
| /// <b>NOTE:</b> if the <see cref="DocsEnum"/> was obtain with <see cref="DocsFlags.NONE"/>, |
| /// the result of this method is undefined. |
| /// </summary> |
| public abstract int Freq { get; } |
| |
| /// <summary> |
| /// Returns the related attributes. </summary> |
| public virtual AttributeSource Attributes |
| { |
| get |
| { |
| if (atts == null) |
| { |
| atts = new AttributeSource(); |
| } |
| return atts; |
| } |
| } |
| } |
| } |