RWCompactObjectOutputStreamImp Class Reference

Writes objects in a compact format to the supplied RWDataOutputStream. More...

#include <rw/serial/RWCompactObjectOutputStreamImp.h>

Inheritance diagram for RWCompactObjectOutputStreamImp:

Public Member Functions
virtual void	endBlock ()
virtual bool	needToWrite (const void *obj)
virtual void	newObjectMarker ()
virtual void	putString (const RWCString &str)
virtual void	putUString (const RWBasicUString &str)
virtual void	putWString (const RWWString &str)
virtual void	rememberObject (const void *obj)
virtual void	setNameForNextObject (const RWCString &)
virtual void	startBlock (const RWSymbol &)
virtual void	startMap (int count, RWStreamType keyType, RWStreamType valueType, const RWSymbol &)
virtual void	startSequence (int count, RWStreamType elementType, const RWSymbol &)
virtual void	writeMemberInfo (const RWSymbol &memberName, RWStreamType memberType)
virtual void	writeNullPtr ()
virtual void	writeTypeInfo (const RWSymbol &typeInfo)
Public Member Functions inherited from RWObjectOutputStreamImp
virtual void	closeContext (bool writeContext=true)
virtual void	endAssoc ()
virtual void	endElement ()
virtual void	endMap ()
virtual void	endMember (const RWSymbol &)
virtual void	endParent ()
virtual void	endSequence ()
virtual void	openContext (bool writeContext=true)
virtual void	putSymbol (const RWSymbol &sym)
virtual void	startAssocKey ()
virtual void	startAssocValue ()
virtual void	startElement (int)
virtual void	startParent (const RWSymbol &)
Public Member Functions inherited from RWFilteredDataOutputStreamImp
virtual	~RWFilteredDataOutputStreamImp ()
virtual void	close ()
virtual void	flush ()
virtual bool	isBad () const
virtual bool	isFail () const
virtual bool	isGood () const
virtual void	putBool (bool value)
virtual void	putBools (const bool *arrayPt, RWSize count)
virtual void	putChar (char value)
virtual void	putCharacter (char value)
virtual void	putChars (const char *arrayPt, RWSize count)
virtual void	putDouble (double value)
virtual void	putDoubles (const double *arrayPt, RWSize count)
virtual void	putFloat (float value)
virtual void	putFloats (const float *arrayPt, RWSize count)
virtual void	putInt (int value)
virtual void	putInts (const int *arrayPt, RWSize count)
virtual void	putLong (long value)
virtual void	putLongDouble (long double value)
virtual void	putLongDoubles (const long double *arrayPt, RWSize count)
virtual void	putLongLong (long long value)
virtual void	putLongLongs (const long long *arrayPt, RWSize count)
virtual void	putLongs (const long *arrayPt, RWSize count)
virtual void	putShort (short value)
virtual void	putShorts (const short *arrayPt, RWSize count)
virtual void	putSignedChar (signed char value)
virtual void	putSignedChars (const signed char *arrayPt, RWSize count)
virtual void	putSizeT (size_t value)
virtual void	putUCharacter (RWUChar value)
virtual void	putUnsignedChar (unsigned char value)
virtual void	putUnsignedChars (const unsigned char *arrayPt, RWSize count)
virtual void	putUnsignedInt (unsigned int value)
virtual void	putUnsignedInts (const unsigned int *arrayPt, RWSize count)
virtual void	putUnsignedLong (unsigned long value)
virtual void	putUnsignedLongLong (unsigned long long value)
virtual void	putUnsignedLongLongs (const unsigned long long *arrayPt, RWSize count)
virtual void	putUnsignedLongs (const unsigned long *arrayPt, RWSize count)
virtual void	putUnsignedShort (unsigned short value)
virtual void	putUnsignedShorts (const unsigned short *arrayPt, RWSize count)
virtual void	putWchar_t (wchar_t value)
virtual void	putWchar_ts (const wchar_t *arrayPt, RWSize count)
virtual void	putWCharacter (wchar_t value)
Public Member Functions inherited from RWDataOutputStreamImp
virtual	~RWDataOutputStreamImp ()
virtual RWDataOutputStream	acquire ()
virtual void	release ()
Public Member Functions inherited from RWOutputStreamImp
virtual	~RWOutputStreamImp ()
Public Member Functions inherited from RWStreamImp
virtual	~RWStreamImp ()

Static Public Member Functions
static RWObjectOutputStream	make (const RWDataOutputStream &sink, bool annotateStream=false)

Protected Member Functions
	RWCompactObjectOutputStreamImp (const RWDataOutputStream &sinkStream, bool annotateStream)
virtual void	closeOuterContext (bool writeContext)
virtual void	openOuterContext (bool writeContext)
virtual void	putString (const char *string, RWSize count)
virtual void	putUString (const RWUChar *ustring, RWSize count)
virtual void	putWString (const wchar_t *wstring, RWSize count)
Protected Member Functions inherited from RWObjectOutputStreamImp
	RWObjectOutputStreamImp (const RWDataOutputStream &sinkStream)
int	getContextNestingLevel ()
Protected Member Functions inherited from RWFilteredDataOutputStreamImp
	RWFilteredDataOutputStreamImp (const RWDataOutputStream &sinkStream)
RWDataOutputStream &	getSinkStream ()
const RWDataOutputStream &	getSinkStream () const
Protected Member Functions inherited from RWDataOutputStreamImp
	RWDataOutputStreamImp ()
Protected Member Functions inherited from RWOutputStreamImp
	RWOutputStreamImp ()
Protected Member Functions inherited from RWStreamImp
	RWStreamImp ()
Protected Member Functions inherited from RWBodyBase
	RWBodyBase (void)
	RWBodyBase (RWStaticCtor)
	RWBodyBase (const RWBodyBase &second)
virtual	~RWBodyBase (void)
RWBodyBase &	operator= (const RWBodyBase &second)
Protected Member Functions inherited from RWTCountingBody< RWMutexLock >
	RWTCountingBody (unsigned initCount=0)
	RWTCountingBody (RWStaticCtor)
	RWTCountingBody (const RWTCountingBody< RWMutexLock > &second)
RWTCountingBody< RWMutexLock > &	operator= (const RWTCountingBody< RWMutexLock > &second)
	~RWTCountingBody (void)
unsigned	addReference (void)
unsigned	references (void) const
unsigned	removeReference (void)
Protected Member Functions inherited from RWTMonitor< RWMutexLock >
	RWTMonitor ()
	RWTMonitor (RWStaticCtor)
	RWTMonitor (const RWTMonitor< RWMutexLock > &second)
	~RWTMonitor ()
void	acquire ()
bool	isAcquired () const
RWTMonitor< RWMutexLock > &	monitor () const
RWMutexLock &	mutex ()
RWTMonitor< RWMutexLock > &	operator= (const RWTMonitor< RWMutexLock > &)
void	release ()
bool	tryAcquire ()

Additional Inherited Members
Protected Types inherited from RWTCountingBody< RWMutexLock >
typedef RWTLockGuard< RWTMonitor< RWMutexLock > >	LockGuard
typedef RWTTryLockGuard< RWTMonitor< RWMutexLock > >	TryLockGuard
typedef RWTUnlockGuard< RWTMonitor< RWMutexLock > >	UnlockGuard
Protected Types inherited from RWTMonitor< RWMutexLock >
typedef RWTLockGuard< RWTMonitor< RWMutexLock > >	LockGuard
typedef RWTTryLockGuard< RWTMonitor< RWMutexLock > >	TryLockGuard
typedef RWTUnlockGuard< RWTMonitor< RWMutexLock > >	UnlockGuard
Protected Attributes inherited from RWObjectOutputStreamImp
RWCString	nameForNextObject_

Detailed Description

The class RWCompactObjectOutputStreamImp writes objects in a compact format to the supplied RWDataOutputStream. The format of this stream resembles that produced when RWCollectable instances are persisted using RW virtual streams. Implements the body idiom from the handle/body pattern. The stream can optionally be annotated with member (attribute) name and type information to support generic parsing.

Example

// Create a string stream to serve as our sink
ostringstream s;

// Create a portable stream from the string stream
RWpostream pstrm(s);

// Create a compact data stream using the portable stream
RWObjectOutputStream out = RWCompactObjectOutputStreamImp::make(
                           RWDataToVirtualOutputStreamImp::make(pstrm));

// Write integer value 1 to compact data stream
out << 1;

Constructor & Destructor Documentation

RWCompactObjectOutputStreamImp::RWCompactObjectOutputStreamImp ( const RWDataOutputStream &  sinkStream, bool  annotateStream  )

inlineprotected

Used by derived classes to initialize the next processing stream. Throws no exceptions.

Parameters

sinkStream	A handle to the next processing stream.
annotateStream	Indicates whether the stream will be annotated.

Member Function Documentation

virtual void RWCompactObjectOutputStreamImp::closeOuterContext ( bool  writeContext )

protectedvirtual

Really closes an open context. This function is called when the number of closeContext() calls matches the number of openContext() calls.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::endBlock ( )

virtual

Outputs tokens that identify the end of an object.

Implements RWObjectOutputStreamImp.

static RWObjectOutputStream RWCompactObjectOutputStreamImp::make ( const RWDataOutputStream &  sink, bool  annotateStream = false  )

static

Constructs an RWCompactObjectOutputStreamImp instance that uses the parameter sink as its sink of bytes, and returns a handle to it. Throws no exceptions.

Parameters

sink	The data stream used as the sink of bytes.
annotateStream	Indicates whether the stream will be annotated.

virtual bool RWCompactObjectOutputStreamImp::needToWrite ( const void *  obj )

virtual

Returns true when the referenced object has not yet been written to the stream in the current context. Otherwise, tokens are output identifying this object as having been previously streamed, and the function returns false.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::newObjectMarker ( )

virtual

Output is a token indicating that an object will be created by the factory.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::openOuterContext ( bool  writeContext )

protectedvirtual

Really opens a new context. This function is called by openContext() when a context is not already open.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::putString ( const RWCString &  str )

virtual

Writes an RWCString to the stream.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::putString ( const char *  string, RWSize  count  )

inlineprotectedvirtual

Forwards the writing of a narrow character string, including embedded nulls, starting at string to the next processing stream.

Parameters

string	A pointer to the narrow string's first character.
count	The number of narrow character(s) to be written to the stream.

Reimplemented from RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::putUString ( const RWBasicUString &  str )

virtual

Writes an RWBasicUString to the stream.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::putUString ( const RWUChar *  ustring, RWSize  count  )

inlineprotectedvirtual

Forwards the writing of a UTF-16 character string, including embedded nulls, starting at ustring to the next processing stream.

Parameters

ustring	A pointer to the string's first unicode character.
count	The number of unicode character(s) to be written to the stream.

Reimplemented from RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::putWString ( const RWWString &  str )

virtual

Writes an RWWString to the stream.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::putWString ( const wchar_t *  wstring, RWSize  count  )

inlineprotectedvirtual

Forwards the writing of a wide character string, including embedded nulls, starting at wstring to the next processing stream.

Parameters

wstring	A pointer to the string's first wide character.
count	The number of wide character(s) to be written to the stream.

Reimplemented from RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::rememberObject ( const void *  obj )

virtual

Called by streaming operators to record each instance streamed out, in case it is referenced again in the same context.

Parameters

obj	Holds the address of the instance.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::setNameForNextObject ( const RWCString &  str )

inlinevirtual

Sets up the instance name for the next object to be written out.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::startBlock ( const RWSymbol &  typeInfo )

virtual

Outputs tokens that identify the start of a new object.

Parameters

typeInfo

Identifies the type of the new object, if such information is available.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::startMap ( int  count, RWStreamType  keyType, RWStreamType  valueType, const RWSymbol &  typeInfo  )

virtual

Called by the output operators for association types (hash tables, etc.) at the start.

Parameters

count	Contains the number of items in the association.
keyType	Contains the type of key in the association.
valueType	Contains the type of value in the association.
typeInfo	Contains the type of the association (collection) itself.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::startSequence ( int  count, RWStreamType  elementType, const RWSymbol &  typeInfo  )

virtual

Called by the output operators for collection types at the start of a sequence.

Parameters

count	Contains the number of items in the collection.
elementType	Contains the type of element in the collection.
typeInfo	Contains the type of the collection itself.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::writeMemberInfo ( const RWSymbol &  memberName, RWStreamType  memberType  )

virtual

Called for before each data member by the streamContents() function. Metadata about the field may or may not be written to the stream, depending on the implementation. This function returns true if data is actually written out. Otherwise, it returns false.

Parameters

memberName	Identifies the name of the member.
memberType	Identifies the type of the member.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::writeNullPtr ( )

virtual

Output is a token representing a null pointer.

Implements RWObjectOutputStreamImp.

virtual void RWCompactObjectOutputStreamImp::writeTypeInfo ( const RWSymbol &  typeInfo )

virtual

Outputs the type information required to factory an object of the correct dynamic type (derived class) on input.

Parameters

typeInfo

Identifies the type of the new object, if such information is available.

Implements RWObjectOutputStreamImp.