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ChecksumIndexInput.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 CHECKSUMINDEXINPUT_H
8 #define CHECKSUMINDEXINPUT_H
9 
10 #include <boost/crc.hpp>
11 #include "IndexInput.h"
12 
13 namespace Lucene {
14 
17 class LPPAPI ChecksumIndexInput : public IndexInput {
18 public:
19  ChecksumIndexInput(const IndexInputPtr& main);
20  virtual ~ChecksumIndexInput();
21 
23 
24 protected:
25  IndexInputPtr main;
26  boost::crc_32_type checksum;
27 
28 public:
31  virtual uint8_t readByte();
32 
38  virtual void readBytes(uint8_t* b, int32_t offset, int32_t length);
39 
41  int64_t getChecksum();
42 
44  virtual void close();
45 
48  virtual int64_t getFilePointer();
49 
52  virtual void seek(int64_t pos);
53 
55  virtual int64_t length();
56 
58  virtual LuceneObjectPtr clone(const LuceneObjectPtr& other = LuceneObjectPtr());
59 };
60 
61 }
62 
63 #endif
LUCENE_CLASS
#define LUCENE_CLASS(Name)
Definition: LuceneObject.h:24
Lucene::LuceneObjectPtr
boost::shared_ptr< LuceneObject > LuceneObjectPtr
Definition: LuceneTypes.h:539
Lucene::IndexInput
Abstract base class for input from a file in a Directory. A random-access input stream....
Definition: IndexInput.h:17
Lucene
Definition: AbstractAllTermDocs.h:12
Lucene::ChecksumIndexInput
Writes bytes through to a primary IndexInput, computing checksum as it goes. Note that you cannot use...
Definition: ChecksumIndexInput.h:17
Lucene::IndexInputPtr
boost::shared_ptr< IndexInput > IndexInputPtr
Definition: LuceneTypes.h:493
IndexInput.h
Lucene::ChecksumIndexInput::checksum
boost::crc_32_type checksum
Definition: ChecksumIndexInput.h:26

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