Pool.h Source File

00001 // See the file LICENSE in the some directory as this file for legal
00002 // notices about this software.   
00003 // $Id: Pool_8h-source.html,v 1.8 2001/10/10 20:40:58 sandro Exp $
00004 #ifndef DEV_W3_ORG__2001_BLINDFOLD_SRC_POOL_H
00005 #define DEV_W3_ORG__2001_BLINDFOLD_SRC_POOL_H
00006 #include "config.h"
00007 
00008 
00009 #include "iter.h"
00010 #include "TripleSink.h"
00011 #include "TripleSource.h"
00012 
00031 class Pool : public TripleSource, public TripleSink {
00032       
00033 public:
00034 
00035     // STANDARD MEMBER FUNCTIONS
00036     Pool();
00037     Pool(const Pool& other);
00038     const Pool& operator=(const Pool& other);
00039     bool operator==(const Pool& other) const;
00040     bool operator<(const Pool& other) const;
00041     size_t hash() const;
00042     friend std::ostream& operator<<(std::ostream& s, const Pool& me);
00043     std::ostream& print_to(std::ostream& stream) const; 
00044     virtual ~Pool();       
00045 
00046     // CLASS-SPECIFIC PUBLIC INTERFACE
00047 
00059     static Pool* open(std::string address, 
00060               Pool* configuration=0, 
00061               std::string override=""
00062               );
00063 
00067     static Pool* open(char* address,
00068               Pool* configuration=0, 
00069               char* override=0
00070               );
00071 
00072 
00079     virtual void replace(Symbol old, Symbol replacement) = 0;
00080 
00085     virtual void remove(Triple) = 0;
00086 
00087 #ifdef DOXYGENX
00088     virtual Symbol getWildcard();
00089 
00090     virtual Symbol* fetch(Symbol pattern[3], iter iterator, 
00091               unsigned long max_results = 0);
00092 
00093     virtual void streamOut(Symbol pattern[3], TripleSink* sink);
00094 #endif
00095 
00096     virtual VariableScope* getScope() const;
00097 
00098 private:
00099 
00100 
00101 };     
00102 
00103 
00104 STANDARD_EXTERNAL(Pool)
00105 
00106 #endif   /* POOL */  // -*-C++-*-