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MergePolicy.h
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1 // Copyright (c) 2009-2014 Alan Wright. All rights reserved.
3 // Distributable under the terms of either the Apache License (Version 2.0)
4 // or the GNU Lesser General Public License.
6 
7 #ifndef MERGEPOLICY_H
8 #define MERGEPOLICY_H
9 
10 #include "SegmentInfos.h"
11 
12 namespace Lucene {
13 
32 class LPPAPI MergePolicy : public LuceneObject {
33 public:
34  MergePolicy(const IndexWriterPtr& writer);
35  virtual ~MergePolicy();
36 
38 
39 protected:
40  IndexWriterWeakPtr _writer;
41 
42 public:
47  virtual MergeSpecificationPtr findMerges(const SegmentInfosPtr& segmentInfos) = 0;
48 
57  virtual MergeSpecificationPtr findMergesForOptimize(const SegmentInfosPtr& segmentInfos, int32_t maxSegmentCount, SetSegmentInfo segmentsToOptimize) = 0;
58 
61  virtual MergeSpecificationPtr findMergesToExpungeDeletes(const SegmentInfosPtr& segmentInfos) = 0;
62 
64  virtual void close() = 0;
65 
67  virtual bool useCompoundFile(const SegmentInfosPtr& segments, const SegmentInfoPtr& newSegment) = 0;
68 
70  virtual bool useCompoundDocStore(const SegmentInfosPtr& segments) = 0;
71 };
72 
76 class LPPAPI OneMerge : public LuceneObject {
77 public:
78  OneMerge(const SegmentInfosPtr& segments, bool useCompoundFile);
79  virtual ~OneMerge();
80 
82 
83 public:
84  SegmentInfoPtr info; // used by IndexWriter
85  bool mergeDocStores; // used by IndexWriter
86  bool optimize; // used by IndexWriter
87  bool registerDone; // used by IndexWriter
88  int64_t mergeGen; // used by IndexWriter
89  bool isExternal; // used by IndexWriter
90  int32_t maxNumSegmentsOptimize; // used by IndexWriter
91  Collection<SegmentReaderPtr> readers; // used by IndexWriter
93 
96  bool aborted;
98 
99 public:
101  void setException(const LuceneException& error);
102 
104  LuceneException getException();
105 
107  void abort();
108 
110  bool isAborted();
111 
112  void checkAborted(const DirectoryPtr& dir);
113 
114  String segString(const DirectoryPtr& dir);
115 };
116 
119 class LPPAPI MergeSpecification : public LuceneObject {
120 public:
122  virtual ~MergeSpecification();
123 
125 
126 public:
128 
129 public:
130  void add(const OneMergePtr& merge);
131  String segString(const DirectoryPtr& dir);
132 };
133 
134 }
135 
136 #endif
int64_t mergeGen
Definition: MergePolicy.h:88
OneMerge provides the information necessary to perform an individual primitive merge operation...
Definition: MergePolicy.h:76
boost::shared_ptr< OneMerge > OneMergePtr
Definition: LuceneTypes.h:192
bool aborted
Definition: MergePolicy.h:96
A MergeSpecification instance provides the information necessary to perform multiple merges...
Definition: MergePolicy.h:119
Collection< SegmentReaderPtr > readers
Definition: MergePolicy.h:91
boost::shared_ptr< IndexWriter > IndexWriterPtr
Definition: LuceneTypes.h:160
int32_t maxNumSegmentsOptimize
Definition: MergePolicy.h:90
bool optimize
Definition: MergePolicy.h:86
LuceneException error
Definition: MergePolicy.h:97
boost::shared_ptr< SegmentInfo > SegmentInfoPtr
Definition: LuceneTypes.h:208
boost::weak_ptr< IndexWriter > IndexWriterWeakPtr
Definition: LuceneTypes.h:160
boost::shared_ptr< SegmentInfos > SegmentInfosPtr
Definition: LuceneTypes.h:210
bool useCompoundFile
Definition: MergePolicy.h:95
boost::shared_ptr< Directory > DirectoryPtr
Definition: LuceneTypes.h:489
Base class for all Lucene classes.
Definition: LuceneObject.h:31
SegmentInfosPtr segments
Definition: MergePolicy.h:94
#define LUCENE_CLASS(Name)
Definition: LuceneObject.h:24
Definition: AbstractAllTermDocs.h:12
Lucene exception container.
Definition: LuceneException.h:15
boost::shared_ptr< MergeSpecification > MergeSpecificationPtr
Definition: LuceneTypes.h:176
bool isExternal
Definition: MergePolicy.h:89
bool mergeDocStores
Definition: MergePolicy.h:85
A MergePolicy determines the sequence of primitive merge operations to be used for overall merge and ...
Definition: MergePolicy.h:32
bool registerDone
Definition: MergePolicy.h:87
Collection< SegmentReaderPtr > readersClone
Definition: MergePolicy.h:92

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