TripleSink.h Source File

00001 // See the file LICENSE in the some directory as this file for legal
00002 // notices about this software.   
00003 // $Id: TripleSink_8h-source.html,v 1.11 2001/10/10 20:40:58 sandro Exp $
00004 #ifndef DEV_W3_ORG__2001_BLINDFOLD_SRC_TRIPLESINK_H
00005 #define DEV_W3_ORG__2001_BLINDFOLD_SRC_TRIPLESINK_H
00006 #include "config.h"
00007 
00008 #include "Triple.h"
00009 class TripleSource;
00010 
00021 class TripleSink {
00022       
00023 public:
00024 
00025     // STANDARD MEMBER FUNCTIONS
00026     TripleSink();
00027     TripleSink(const TripleSink& other);
00028     const TripleSink& operator=(const TripleSink& other);
00029     bool operator==(const TripleSink& other) const;
00030     bool operator<(const TripleSink& other) const;
00031     size_t hash() const;
00032     friend std::ostream& operator<<(std::ostream& s, const TripleSink& me);
00033     std::ostream& print_to(std::ostream& stream) const; 
00034     virtual ~TripleSink();       
00035 
00036     // CLASS-SPECIFIC PUBLIC INTERFACE
00037 
00041     void add(Symbol subject, Symbol predicate, Symbol object)
00042     {
00043         add(Triple(subject, predicate, object));
00044     }
00045 
00049     virtual void add(Triple triple) = 0;
00050 
00054     virtual VariableScope* getScope() const;
00055 
00056     virtual void mUnion(const TripleSource& source);
00057 
00058 private:
00059 
00060 };     
00061 
00062 
00063 
00068 inline void addCCC(TripleSink* sink, 
00069            const char* subject, 
00070            const char* predicate , 
00071            const char* object) 
00072 {
00073     sink->add(Symbol::constant(subject), 
00074           Symbol::constant(predicate), 
00075           Symbol::constant(object));
00076 }
00077 
00078 #if 0
00079 
00084 Symbol symbolFor(char *utf8_text, TripleSink* sink);
00085 Symbol symbolFor(char *utf8_text, char *end, TripleSink* sink);
00086 Symbol symbolFor(std::string utf8_text, TripleSink* sink);
00087 Symbol symbolForAnonymous(char *utf8_text, TripleSink* sink);
00088 Symbol symbolForAnonymous(char *utf8_text, SymbolSpace* space);
00089 #endif
00090 
00091 STANDARD_EXTERNAL(TripleSink)
00092 
00093 #endif   /* TRIPLESINK */  // -*-C++-*-