RWWithObjectInputContext Class Reference
[Serialization]

Represents a guard object that opens and closes a context within a lexical scope for input streams. More...

#include <rw/serial/RWObjectInputStream.h>

List of all members.

Public Member Functions
	RWWithObjectInputContext (RWObjectInputStream &strm, bool readContext=true)
	RWWithObjectInputContext (RWObjectInputStreamImp *strm, bool readContext=true)
	~RWWithObjectInputContext ()

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Detailed Description

This class consists of a guard object that opens and closes a context within a lexical scope. To use RWWithObjectInputContext, simply declare an automatic instance of this class initialized with a object input stream, and all object references within the scope of the automatic variable will be streamed within the same context.

Examples

 // Read in one or more objects from an object stream that
 // were output in the same context.

 #include <rw/serial/RWCompactObjectInputStreamImp.h>
 #include <rw/serial/RWObjectInputStream.h>
 #include <fstream.h>
 #include <iostream.h>

 int main() {
   ifstream fstrm;
   fstrm.open("RWWithObjectOutputContext.out",
     ios::in | ios::nocreate);

   if (!fstrm) {
     cout << "The file does not exist."<< endl;
   }

   else {
     RWObjectInputStream in =
       RWCompactObjectInputStreamImp::make(fstrm);

     RWWithObjectInputContext context(in);

     int i,j;

     in >> i >> j;
     cout << "i = " << i << "  j = " << j << endl;

   }
   return 0;
 }

See also:

RWObjectInputStream

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Constructor & Destructor Documentation

RWWithObjectInputContext::RWWithObjectInputContext	(	RWObjectInputStream &	strm,
		bool	readContext = true
	)			[inline]

Constructor taking object input stream reference argument. If readContext is true then read in any document header at the outer context.

RWWithObjectInputContext::RWWithObjectInputContext	(	RWObjectInputStreamImp *	strm,
		bool	readContext = true
	)			[inline]

Constructor taking object input stream pointer argument. If readContext is true then read in any document header at the outer context.

RWWithObjectInputContext::~RWWithObjectInputContext

(

)

[inline]

Destructor automatically closes context.