Geners/interface/CatalogEntry.hh

0001 #ifndef GENERS_CATALOGENTRY_HH_
0002 #define GENERS_CATALOGENTRY_HH_
0003
0004 #include "Alignment/Geners/interface/ItemDescriptor.hh"
0005 #include "Alignment/Geners/interface/ItemLocation.hh"
0006
0007 namespace gs {
0008   class CatalogEntry : public ItemDescriptor {
0009   public:
0010     // Default constructor returns an invalid entry
0011     CatalogEntry();
0012
0013     // Use this constructor to build valid entries
0014     CatalogEntry(const ItemDescriptor &descr,
0015                  unsigned long long id,
0016                  unsigned compressionCode,
0017                  unsigned long long itemLength,
0018                  const ItemLocation &location,
0019                  unsigned long long offset = 0ULL);
0020
0021     inline ~CatalogEntry() override {}
0022
0023     inline unsigned long long id() const { return id_; }
0024     inline unsigned long long offset() const { return offset_; }
0025     inline const ItemLocation &location() const { return location_; }
0026     inline unsigned long long itemLength() const { return len_; }
0027     inline unsigned compressionCode() const { return compressionCode_; }
0028
0029     inline CatalogEntry &setStreamPosition(std::streampos pos) {
0030       location_.setStreamPosition(pos);
0031       return *this;
0032     }
0033     inline CatalogEntry &setURI(const char *newURI) {
0034       location_.setURI(newURI);
0035       return *this;
0036     }
0037     inline CatalogEntry &setCachedItemURI(const char *newURI) {
0038       location_.setCachedItemURI(newURI);
0039       return *this;
0040     }
0041     inline CatalogEntry &setOffset(const unsigned long long off) {
0042       offset_ = off;
0043       return *this;
0044     }
0045
0046     // Dump a simple human-readable representation
0047     bool humanReadable(std::ostream &os) const;
0048
0049     // Methods related to I/O for this record itself
0050     inline virtual ClassId classId() const { return ClassId(*this); }
0051     virtual bool write(std::ostream &of) const;
0052
0053     static inline const char *classname() { return "gs::CatalogEntry"; }
0054     static inline unsigned version() { return 1; }
0055
0056     // "locId" is the class id for ItemLocation. Should be written
0057     // out by the catalog together with the CatalogEntry class id.
0058     static CatalogEntry *read(const ClassId &id, const ClassId &locId, std::istream &in);
0059
0060   protected:
0061     bool isEqual(const ItemDescriptor &) const override;
0062
0063   private:
0064     unsigned long long id_;
0065     unsigned long long len_;
0066     unsigned long long offset_;
0067     unsigned compressionCode_;
0068     ItemLocation location_;
0069   };
0070 }  // namespace gs
0071
0072 #endif  // GENERS_CATALOGENTRY_HH_