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Diffstat (limited to 'src/3rdparty/clucene/src/CLucene/search/FieldCacheImpl.h')
-rw-r--r-- | src/3rdparty/clucene/src/CLucene/search/FieldCacheImpl.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/3rdparty/clucene/src/CLucene/search/FieldCacheImpl.h b/src/3rdparty/clucene/src/CLucene/search/FieldCacheImpl.h new file mode 100644 index 0000000..ac3c4ca --- /dev/null +++ b/src/3rdparty/clucene/src/CLucene/search/FieldCacheImpl.h @@ -0,0 +1,144 @@ +/*------------------------------------------------------------------------------ +* 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_search_FieldCacheImpl_ +#define _lucene_search_FieldCacheImpl_ + +#if defined(_LUCENE_PRAGMA_ONCE) +# pragma once +#endif + +#include "CLucene/index/IndexReader.h" +#include "FieldCache.h" +#include "Sort.h" + + +CL_NS_DEF(search) + + +/** + * Expert: The default cache implementation, storing all values in memory. + * + */ +class FieldCacheImpl: public FieldCache { +public: + DEFINE_MUTEX(THIS_LOCK) + + /** Expert: Every key in the internal cache is of this type. */ + class FileEntry:LUCENE_BASE { + const TCHAR* field; // which Field + int32_t type; // which SortField type + SortComparatorSource* custom; // which custom comparator + size_t _hashCode; + public: + /** Creates one of these objects. */ + FileEntry (const TCHAR* field, int32_t type); + + /** Creates one of these objects for a custom comparator. */ + FileEntry (const TCHAR* field, SortComparatorSource* custom); + ~FileEntry(); + + int32_t getType() const{ return type; } + + /** Two of these are equal iff they reference the same field and type. */ + bool equals (FileEntry* other) const; + + /** Composes a hashcode based on the field and type. */ + size_t hashCode(); + + int32_t compareTo(const FileEntry* other) const; + + class Compare:LUCENE_BASE, public CL_NS(util)::Compare::_base //<Term*> + { + public: + bool operator()( FileEntry* f1, FileEntry* f2 ) const{ + return ( f1->compareTo(f2) < 0 ); + } + size_t operator()( FileEntry* t ) const{ + return t->hashCode(); + } + }; + class Equals:LUCENE_BASE, public CL_NS(util)::Compare::_base //<Term*> + { + public: + bool operator()( FileEntry* f1, FileEntry* f2 ) const{ + return ( f1->compareTo(f2) == 0 ); + } + }; + }; + + FieldCacheImpl(); + ~FieldCacheImpl(); +private: + + ///the type that is stored in the field cache. can't use a typedef because + ///the decorated name would become too long + class fieldcacheCacheReaderType: public CL_NS(util)::CLHashMap<FileEntry*, + FieldCacheAuto*, + FileEntry::Compare, + FileEntry::Equals, + CL_NS(util)::Deletor::Object<FileEntry>, + CL_NS(util)::Deletor::Object<FieldCacheAuto> >{ + public: + fieldcacheCacheReaderType(); + ~fieldcacheCacheReaderType(); + }; + + //note: typename gets too long if using cacheReaderType as a typename + typedef CL_NS(util)::CLHashMap<CL_NS(index)::IndexReader*, + fieldcacheCacheReaderType*, + CL_NS(util)::Compare::Void<CL_NS(index)::IndexReader>, + CL_NS(util)::Equals::Void<CL_NS(index)::IndexReader>, + CL_NS(util)::Deletor::Object<CL_NS(index)::IndexReader>, + CL_NS(util)::Deletor::Object<fieldcacheCacheReaderType> > fieldcacheCacheType; + + /** The internal cache. Maps FileEntry to array of interpreted term values. **/ + //todo: make indexreader remove itself from here when the reader is shut + fieldcacheCacheType cache; + + /** See if an object is in the cache. */ + FieldCacheAuto* lookup (CL_NS(index)::IndexReader* reader, const TCHAR* field, int32_t type) ; + + /** See if a custom object is in the cache. */ + FieldCacheAuto* lookup (CL_NS(index)::IndexReader* reader, const TCHAR* field, SortComparatorSource* comparer); + + /** Put an object into the cache. */ + void store (CL_NS(index)::IndexReader* reader, const TCHAR* field, int32_t type, FieldCacheAuto* value); + + /** Put a custom object into the cache. */ + void store (CL_NS(index)::IndexReader* reader, const TCHAR* field, SortComparatorSource* comparer, FieldCacheAuto* value); + +public: + + // inherit javadocs + FieldCacheAuto* getInts (CL_NS(index)::IndexReader* reader, const TCHAR* field); + + // inherit javadocs + FieldCacheAuto* getFloats (CL_NS(index)::IndexReader* reader, const TCHAR* field); + + // inherit javadocs + FieldCacheAuto* getStrings (CL_NS(index)::IndexReader* reader, const TCHAR* field); + + // inherit javadocs + FieldCacheAuto* getStringIndex (CL_NS(index)::IndexReader* reader, const TCHAR* field); + + // inherit javadocs + FieldCacheAuto* getAuto (CL_NS(index)::IndexReader* reader, const TCHAR* field); + + // inherit javadocs + FieldCacheAuto* getCustom (CL_NS(index)::IndexReader* reader, const TCHAR* field, SortComparator* comparator); + + + /** + * Callback for when IndexReader closes. This causes + * any cache to be removed for the specified reader. + */ + static void closeCallback(CL_NS(index)::IndexReader* reader, void* fieldCacheImpl); +}; + + +CL_NS_END +#endif |