class c4_Storage

Manager for persistent storage of view structures.

Public members
	c4_Storage (); Construct streaming-only storage object
	c4_Storage (c4_Strategy& strategy_, bool owned_ =false); Construct a storage using the specified strategy handler
	c4_Storage (const char* filename_, const char* description_); Construct a storage object for given file and format
	c4_Storage (const char* filename_, bool canModify_); Construct a storage object, keeping the current structure
	c4_Storage (const c4_Storage&); Copy constructor
	~c4_Storage (); Destructor, usually closes file, but does not commit by default
c4_Storage&	operator= (const c4_Storage&); Assignment of storage implements reference semantics
void	AutoCommit (); Set storage up to always call Commit in the destructor
c4_RowRef	Contents () const; Give access to the stored data as a single row
c4_Strategy&	Strategy () const; Return the strategy object associated with this storage
c4_HandlerSeq&	RootTable () const; Return the root table entry
const char*	Description (const char* name_ =0); Return a description of the view structure (default is all)
bool	Commit (); Flush pending changes to file right now
bool	Rollback (); (Re)initialize for on-demand loading
c4_ViewRef	View (const char* name_); Get or set a named view in this storage object
c4_View	GetAs (const char* description_); Get a named view, redefining it to match the given structure
c4_View	Store (const char* name_, const c4_View& view_); Attach a view using specified name in this storage object
void	LoadFrom (c4_Stream& stream_); Load contents from the specified input stream
void	SaveTo (c4_Stream& stream_); Save contents to the specified output stream

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Header file

"mk4.h"   --   Dec 9, 1999