SpanQuery.cs
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上传日期:2013-09-30
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- /*
- * Copyright 2004 The Apache Software Foundation
- *
- * Licensed 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 System;
- using IndexReader = Lucene.Net.Index.IndexReader;
- using Query = Lucene.Net.Search.Query;
- using Searcher = Lucene.Net.Search.Searcher;
- using Weight = Lucene.Net.Search.Weight;
- namespace Lucene.Net.Search.Spans
- {
-
- /// <summary>Base class for span-based queries. </summary>
- [Serializable]
- public abstract class SpanQuery:Query
- {
- /// <summary>Expert: Returns the matches for this query in an index. Used internally
- /// to search for spans.
- /// </summary>
- public abstract Spans GetSpans(IndexReader reader);
-
- /// <summary>Returns the name of the field matched by this query.</summary>
- public abstract System.String GetField();
-
- /// <summary>Returns a collection of all terms matched by this query.</summary>
- public abstract System.Collections.ICollection GetTerms();
-
- protected internal override Weight CreateWeight(Searcher searcher)
- {
- return new SpanWeight(this, searcher);
- }
- }
- }