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LSST Data Management Base Package
IdFactory.h
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1// -*- lsst-c++ -*-
2#ifndef AFW_TABLE_IdFactory_h_INCLUDED
3#define AFW_TABLE_IdFactory_h_INCLUDED
4
5#include <memory>
6
7#include "lsst/base.h"
9
10namespace lsst {
11namespace afw {
12namespace table {
13
21class IdFactory {
22public:
24 virtual RecordId operator()() = 0;
25
27 virtual void notify(RecordId id) = 0;
28
30 virtual std::shared_ptr<IdFactory> clone() const = 0;
31
38
49 static std::shared_ptr<IdFactory> makeSource(RecordId expId, int reserved);
50
57 static int computeReservedFromMaxBits(int maxBits) {
58 // Subtract one for signed integers to avoid the sign bit.
59 return sizeof(RecordId)*8 - std::is_signed<RecordId>::value - maxBits;
60 }
61
62 IdFactory() = default;
63 IdFactory(IdFactory const &) = default;
64 IdFactory(IdFactory &&) = default;
65
66 // Protected to prevent slicing.
67 IdFactory &operator=(IdFactory const &other) = delete;
68 IdFactory &operator=(IdFactory &&other) = delete;
69 virtual ~IdFactory() = default;
70
71private:
72};
73} // namespace table
74} // namespace afw
75} // namespace lsst
76
77#endif // !AFW_TABLE_IdFactory_h_INCLUDED
Basic LSST definitions.
A polymorphic functor base class for generating record IDs for a table.
Definition: IdFactory.h:21
virtual RecordId operator()()=0
Return a new unique RecordId.
IdFactory(IdFactory &&)=default
virtual ~IdFactory()=default
static int computeReservedFromMaxBits(int maxBits)
Return the number to pass as the 'reserved' argument to makeSource for an exposure ID with the given ...
Definition: IdFactory.h:57
static std::shared_ptr< IdFactory > makeSimple()
Return a simple IdFactory that simply counts from 1.
Definition: IdFactory.cc:70
virtual void notify(RecordId id)=0
Notify the IdFactory that the given ID has been used and must not be returned by operator().
virtual std::shared_ptr< IdFactory > clone() const =0
Deep-copy the IdFactory.
IdFactory & operator=(IdFactory const &other)=delete
IdFactory & operator=(IdFactory &&other)=delete
IdFactory(IdFactory const &)=default
static std::shared_ptr< IdFactory > makeSource(RecordId expId, int reserved)
Return an IdFactory that includes another, fixed ID in the higher-order bits.
Definition: IdFactory.cc:72
std::int64_t RecordId
Type used for unique IDs for records.
Definition: misc.h:21
A base class for image defects.