1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/*
* 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 System;
using IndexReader = Lucene.Net.Index.IndexReader;
namespace Lucene.Net.Search
{
/// <summary> Constrains search results to only match those which also match a provided
/// query.
///
/// <p/> This could be used, for example, with a <see cref="TermRangeQuery" /> on a suitably
/// formatted date field to implement date filtering. One could re-use a single
/// QueryFilter that matches, e.g., only documents modified within the last
/// week. The QueryFilter and TermRangeQuery would only need to be reconstructed
/// once per day.
///
/// </summary>
/// <version> $Id:$
/// </version>
[Serializable]
public class QueryWrapperFilter:Filter
{
private class AnonymousClassDocIdSet:DocIdSet
{
public AnonymousClassDocIdSet(Lucene.Net.Search.Weight weight, Lucene.Net.Index.IndexReader reader, QueryWrapperFilter enclosingInstance)
{
InitBlock(weight, reader, enclosingInstance);
}
private void InitBlock(Lucene.Net.Search.Weight weight, Lucene.Net.Index.IndexReader reader, QueryWrapperFilter enclosingInstance)
{
this.weight = weight;
this.reader = reader;
this.enclosingInstance = enclosingInstance;
}
private Lucene.Net.Search.Weight weight;
private Lucene.Net.Index.IndexReader reader;
private QueryWrapperFilter enclosingInstance;
public QueryWrapperFilter Enclosing_Instance
{
get
{
return enclosingInstance;
}
}
public override DocIdSetIterator Iterator()
{
return weight.Scorer(reader, true, false);
}
public override bool IsCacheable
{
get { return false; }
}
}
private Query query;
/// <summary>Constructs a filter which only matches documents matching
/// <c>query</c>.
/// </summary>
public QueryWrapperFilter(Query query)
{
this.query = query;
}
public override DocIdSet GetDocIdSet(IndexReader reader)
{
Weight weight = query.Weight(new IndexSearcher(reader));
return new AnonymousClassDocIdSet(weight, reader, this);
}
public override System.String ToString()
{
return "QueryWrapperFilter(" + query + ")";
}
public override bool Equals(System.Object o)
{
if (!(o is QueryWrapperFilter))
return false;
return this.query.Equals(((QueryWrapperFilter) o).query);
}
public override int GetHashCode()
{
return query.GetHashCode() ^ unchecked((int) 0x923F64B9);
}
}
}
|
