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FitsReader.h
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1// -*- lsst-c++ -*-
2#ifndef AFW_TABLE_IO_FitsReader_h_INCLUDED
3#define AFW_TABLE_IO_FitsReader_h_INCLUDED
4
5#include <type_traits>
6
7#include "lsst/afw/fits.h"
13
14namespace lsst {
15namespace afw {
16namespace table {
17namespace io {
18
35public:
43 explicit FitsReader(std::string const& persistedClassName);
44
45 FitsReader(FitsReader const&) = default;
46 FitsReader(FitsReader&&) = default;
47 FitsReader& operator=(FitsReader const&) = default;
49
70 template <typename ContainerT>
71 static ContainerT apply(afw::fits::Fits& fits, int ioFlags,
74 fits.readMetadata(*metadata, true);
75 FitsReader const* reader = _lookupFitsReader(*metadata);
76 FitsSchemaInputMapper mapper(*metadata, true);
77 reader->_setupArchive(fits, mapper, archive, ioFlags);
78 std::shared_ptr<BaseTable> table = reader->makeTable(mapper, metadata, ioFlags, true);
80 if (!container.getTable()) {
81 throw LSST_EXCEPT(pex::exceptions::RuntimeError, "Invalid table class for catalog.");
82 }
83 std::size_t nRows = fits.countRows();
84 container.reserve(nRows);
85 for (std::size_t row = 0; row < nRows; ++row) {
86 mapper.readRecord(
87 // We need to be able to support reading Catalog<T const>, since it shares the same
88 // template
89 // as Catalog<T> (which invokes this method in readFits).
91 *container.addNew()),
92 fits, row);
93 }
94 return container;
95 }
96
103 template <typename ContainerT, typename SourceT>
104 static ContainerT apply(SourceT& source, int hdu, int ioFlags,
107 fits.setHdu(hdu);
108 return apply<ContainerT>(fits, ioFlags, archive);
109 }
110
132 int ioFlags, bool stripMetadata) const;
133
138 virtual bool usesArchive(int ioFlags) const { return false; }
139
140 virtual ~FitsReader() = default;
141
142private:
143 static FitsReader const* _lookupFitsReader(daf::base::PropertyList const& metadata);
144
145 void _setupArchive(afw::fits::Fits& fits, FitsSchemaInputMapper& mapper,
146 std::shared_ptr<InputArchive> archive, int ioFlags) const;
147};
148} // namespace io
149} // namespace table
150} // namespace afw
151} // namespace lsst
152
153#endif // !AFW_TABLE_IO_FitsReader_h_INCLUDED
#define LSST_EXCEPT(type,...)
Create an exception with a given type.
Definition Exception.h:48
SchemaMapper * mapper
A simple struct that combines the two arguments that must be passed to most cfitsio routines and cont...
Definition fits.h:308
A utility class for reading FITS binary tables.
Definition FitsReader.h:34
FitsReader(FitsReader &&)=default
virtual std::shared_ptr< BaseTable > makeTable(FitsSchemaInputMapper &mapper, std::shared_ptr< daf::base::PropertyList > metadata, int ioFlags, bool stripMetadata) const
Callback to create a Table object from a FITS binary table schema.
Definition FitsReader.cc:24
virtual bool usesArchive(int ioFlags) const
Callback that should return true if the FitsReader subclass makes use of an InputArchive to read firs...
Definition FitsReader.h:138
static ContainerT apply(afw::fits::Fits &fits, int ioFlags, std::shared_ptr< InputArchive > archive=std::shared_ptr< InputArchive >())
Create a new Catalog by reading a FITS binary table.
Definition FitsReader.h:71
FitsReader(std::string const &persistedClassName)
Construct a FitsReader, registering it to be used for all persisted tables with the given tag.
Definition FitsReader.cc:32
FitsReader & operator=(FitsReader const &)=default
FitsReader(FitsReader const &)=default
static ContainerT apply(SourceT &source, int hdu, int ioFlags, std::shared_ptr< InputArchive > archive=std::shared_ptr< InputArchive >())
Create a new Catalog by reading a FITS file.
Definition FitsReader.h:104
FitsReader & operator=(FitsReader &&)=default
A class that describes a mapping from a FITS binary table to an afw::table Schema.
Class for storing ordered metadata with comments.
Reports errors that are due to events beyond the control of the program.
Definition Runtime.h:104
T make_shared(T... args)
T dynamic_pointer_cast(T... args)
int row
Definition CR.cc:145