Lucene.Net  3.0.3
Lucene.Net is a port of the Lucene search engine library, written in C# and targeted at .NET runtime users.
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TermVectorsTermsWriterPerThread.cs
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2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
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8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 using System;
19 
20 using UnicodeUtil = Lucene.Net.Util.UnicodeUtil;
21 
22 namespace Lucene.Net.Index
23 {
24 
26  {
27 
28  internal TermVectorsTermsWriter termsWriter;
29  internal TermsHashPerThread termsHashPerThread;
30  internal DocumentsWriter.DocState docState;
31 
32  internal TermVectorsTermsWriter.PerDoc doc;
33 
35  {
36  this.termsWriter = termsWriter;
37  this.termsHashPerThread = termsHashPerThread;
38  docState = termsHashPerThread.docState;
39  }
40 
41  // Used by perField when serializing the term vectors
42  internal ByteSliceReader vectorSliceReader = new ByteSliceReader();
43 
44  internal UnicodeUtil.UTF8Result[] utf8Results = new UnicodeUtil.UTF8Result[]{new UnicodeUtil.UTF8Result(), new UnicodeUtil.UTF8Result()};
45 
46  public override void StartDocument()
47  {
48  System.Diagnostics.Debug.Assert(ClearLastVectorFieldName());
49  if (doc != null)
50  {
51  doc.Reset();
52  doc.docID = docState.docID;
53  }
54  }
55 
56  public override DocumentsWriter.DocWriter FinishDocument()
57  {
58  try
59  {
60  return doc;
61  }
62  finally
63  {
64  doc = null;
65  }
66  }
67 
68  public override TermsHashConsumerPerField AddField(TermsHashPerField termsHashPerField, FieldInfo fieldInfo)
69  {
70  return new TermVectorsTermsWriterPerField(termsHashPerField, this, fieldInfo);
71  }
72 
73  public override void Abort()
74  {
75  if (doc != null)
76  {
77  doc.Abort();
78  doc = null;
79  }
80  }
81 
82  // Called only by assert
83  internal bool ClearLastVectorFieldName()
84  {
85  lastVectorFieldName = null;
86  return true;
87  }
88 
89  // Called only by assert
90  internal System.String lastVectorFieldName;
91  internal bool VectorFieldsInOrder(FieldInfo fi)
92  {
93  try
94  {
95  if (lastVectorFieldName != null)
96  return String.CompareOrdinal(lastVectorFieldName, fi.name) < 0;
97  else
98  return true;
99  }
100  finally
101  {
102  lastVectorFieldName = fi.name;
103  }
104  }
105  }
106 }