/usr/include/CLucene/index/MultiReader.h is in libclucene-dev 2.3.3.4-4build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
*
* Distributable under the terms of either the Apache License (Version 2.0) or
* the GNU Lesser General Public License, as specified in the COPYING file.
------------------------------------------------------------------------------*/
#ifndef _lucene_index_MultiReader
#define _lucene_index_MultiReader
//#include "SegmentHeader.h"
#include "IndexReader.h"
CL_CLASS_DEF(document,Document)
//#include "Terms.h"
//#include "SegmentMergeQueue.h"
CL_NS_DEF(index)
/** An IndexReader which reads multiple indexes, appending their content.
*/
class CLUCENE_EXPORT MultiReader:public IndexReader{
private:
class Internal;
Internal* _internal;
int32_t readerIndex(const int32_t n) const;
bool hasNorms(const TCHAR* field);
uint8_t* fakeNorms();
void init(const CL_NS(util)::ArrayBase<IndexReader*>* subReaders, bool closeSubReaders);
protected:
CL_NS(util)::ArrayBase<IndexReader*>* subReaders;
int32_t* starts; // 1st docno for each segment
void doSetNorm(int32_t n, const TCHAR* field, uint8_t value);
void doUndeleteAll();
void doCommit();
void doClose();
void doDelete(const int32_t n);
public:
/**
* <p>Construct a MultiReader aggregating the named set of (sub)readers.
* Directory locking for delete, undeleteAll, and setNorm operations is
* left to the subreaders. </p>
* @param subReaders set of (sub)readers
* @param closeSubReaders The subReaders (IndexReader instances) are deleted if true
* @throws IOException
* @memory The subReaders array itself belongs to the caller
*/
MultiReader(const CL_NS(util)::ArrayBase<IndexReader*>* subReaders, bool closeSubReaders=true);
~MultiReader();
/**
* Tries to reopen the subreaders.
* <br>
* If one or more subreaders could be re-opened (i. e. subReader.reopen()
* returned a new instance != subReader), then a new MultiReader instance
* is returned, otherwise this instance is returned.
* <p>
* A re-opened instance might share one or more subreaders with the old
* instance. Index modification operations result in undefined behavior
* when performed before the old instance is closed.
* (see {@link IndexReader#reopen()}).
* <p>
* If subreaders are shared, then the reference count of those
* readers is increased to ensure that the subreaders remain open
* until the last referring reader is closed.
*
* @throws CorruptIndexException if the index is corrupt
* @throws IOException if there is a low-level IO error
*/
IndexReader* reopen();
TermFreqVector* getTermFreqVector(int32_t n, const TCHAR* field=NULL);
void getTermFreqVector(int32_t docNumber, const TCHAR* field, TermVectorMapper* mapper);
void getTermFreqVector(int32_t docNumber, TermVectorMapper* mapper);
/** Return an array of term frequency vectors for the specified document.
* The array contains a vector for each vectorized field in the document.
* Each vector vector contains term numbers and frequencies for all terms
* in a given vectorized field.
* If no such fields existed, the method returns null.
*/
CL_NS(util)::ArrayBase<TermFreqVector*>* getTermFreqVectors(int32_t n);
bool isOptimized();
int32_t numDocs();
int32_t maxDoc() const;
bool document(int32_t n, CL_NS(document)::Document& doc, const CL_NS(document)::FieldSelector* fieldSelector);
bool isDeleted(const int32_t n);
bool hasDeletions() const;
uint8_t* norms(const TCHAR* field);
void norms(const TCHAR* field, uint8_t* result);
TermEnum* terms();
TermEnum* terms(const Term* term);
//Returns the document frequency of the current term in the set
int32_t docFreq(const Term* t=NULL);
TermDocs* termDocs();
TermPositions* termPositions();
/**
* @see IndexReader#getFieldNames(IndexReader.FieldOption fldOption)
*/
void getFieldNames(FieldOption fldOption, StringArrayWithDeletor& retarray);
/**
* Checks recursively if all subreaders are up to date.
*/
bool isCurrent();
/** Not implemented.
* @throws UnsupportedOperationException
*/
int64_t getVersion();
const CL_NS(util)::ArrayBase<IndexReader*>* getSubReaders() const;
static const char* getClassName();
const char* getObjectName() const;
};
CL_NS_END
#endif
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