StreamManager Class Reference

Represents stream managing class. More...

#include <streammanager.h>

Collaboration diagram for StreamManager:

[legend]

List of all members.

Public Member Functions
virtual	~StreamManager ()
void	print ()
	Prints information of all used input/output streams.
InputStream *	getQueryInputStream ()
	Returns the query input stream.
InputStream *	getXMLInputStream ()
	Returns the XML document input stream.
OutputStream *	getDebugOutputStream ()
	Returns the debug output stream.
OutputStream *	getEvalOutputStream ()
	Returns the evaluate/result output stream.
Static Public Member Functions
static void	initInstance (InputStream *_query_istream, InputStream *_xml_istream, OutputStream *_debug_ostream, OutputStream *_eval_ostream)
	Initializes instance of StreamManager.
static StreamManager *	getInstance ()
	Returns instance of StreamManager.
Private Member Functions
	StreamManager (InputStream *_query_istream, InputStream *_xml_istream, OutputStream *_debug_ostream, OutputStream *_eval_ostream)
	Constructor.
Private Attributes
InputStream *	query_istream
	The entered query InputStream.
InputStream *	xml_istream
	The entered XML document InputStream.
OutputStream *	debug_ostream
	The entered debug OutputStream.
OutputStream *	eval_ostream
	The entered evaluate/result OutputStream.
Static Private Attributes
static StreamManager *	instance = NULL
	Instance of StreamManager.

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Detailed Description

Represents stream managing class.

Represents stream managing class, which handles all input/ouput streams.

Note:

SINGLETON PATTERN!

Author:

Michael Schmidt

Gunnar Jehl

Version:

2.1

License:

Software License Agreement (BSD License)

Definition at line 53 of file streammanager.h.

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Constructor & Destructor Documentation

StreamManager::~StreamManager

(

)

[virtual]

Destructor.

Definition at line 57 of file streammanager.cpp.

References debug_ostream, eval_ostream, query_istream, and xml_istream.

StreamManager::StreamManager	(	InputStream *	_query_istream,
		InputStream *	_xml_istream,
		OutputStream *	_debug_ostream,
		OutputStream *	_eval_ostream
	)			[private]

Constructor.

Constructor - creating object for two InputStream and two OutputStream.

Parameters:

[in]	_query_istream	Pointer to a InputStream object.
[in]	_xml_istream	Pointer to a InputStream object.
[in]	_debug_ostream	Pointer to a OutputStream object.
[in]	_eval_ostream	Pointer to a OutputStream object.

Definition at line 52 of file streammanager.cpp.

Referenced by initInstance().

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Member Function Documentation

OutputStream * StreamManager::getDebugOutputStream

(

)

[inline]

Returns the debug output stream.

Returns the debug output stream.

Return values:

OutputStream*

Pointer to a OutputStream object.

Definition at line 112 of file streammanager.h.

References debug_ostream.

OutputStream * StreamManager::getEvalOutputStream

(

)

[inline]

Returns the evaluate/result output stream.

Returns the evaluate/result output stream.

Return values:

OutputStream*

Pointer to a OutputStream object.

Definition at line 121 of file streammanager.h.

References eval_ostream.

static StreamManager * StreamManager::getInstance

(

)

[static]

Returns instance of StreamManager.

Returns instance of StreamManager, i.e. of this object.

Note:

DO NOT CALL THIS METHOD BEFORE METHOD initInstance(InputStream* _query_istream, InputStream* _xml_istream, OutputStream* _debug_ostream, OutputStream* _eval_ostream) WAS CALLED!

Return values:

StreamManager*

Pointer to a StreamManager object.

Definition at line 48 of file streammanager.cpp.

References instance.

Referenced by Executor::parseQuery(), Executor::start(), and Executor::~Executor().

InputStream * StreamManager::getQueryInputStream

(

)

[inline]

Returns the query input stream.

Returns the query input stream.

Return values:

InputStream*

Pointer to a InputStream object.

Definition at line 96 of file streammanager.h.

References query_istream.

InputStream * StreamManager::getXMLInputStream

(

)

[inline]

Returns the XML document input stream.

Returns the XML document input stream.

Return values:

InputStream*

Pointer to a InputStream object.

Definition at line 103 of file streammanager.h.

Referenced by Executor::parseQuery().

static void StreamManager::initInstance	(	InputStream *	_query_istream,
		InputStream *	_xml_istream,
		OutputStream *	_debug_ostream,
		OutputStream *	_eval_ostream
	)			[static]

Initializes instance of StreamManager.

Initializes instance of StreamManager, i.e. initializes this object.

Note:

CALL THIS METHOD BEFORE METHOD getInstance()!

Parameters:

[in]	_query_istream	Pointer to a InputStream object.
[in]	_xml_istream	Pointer to a InputStream object.
[in]	_debug_ostream	Pointer to a OutputStream object.
[in]	_eval_ostream	Pointer to a OutputStream object.

Return values:

void

Definition at line 39 of file streammanager.cpp.

References instance, and StreamManager().

Referenced by Executor::initStreams().

void StreamManager::print

(

)

Prints information of all used input/output streams.

Prints information of all used input/output streams.

Return values:

void

Definition at line 64 of file streammanager.cpp.

References debug_ostream, eval_ostream, OutputStream::getArg(), InputStream::getArg(), OutputStream::getType(), InputStream::getType(), NEWLINE, query_istream, and xml_istream.

Referenced by Executor::parseQuery().

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Member Data Documentation

OutputStream * StreamManager::debug_ostream [private]

The entered debug OutputStream.

The entered debug OutputStream, which is the third argument of the constructor.

Definition at line 158 of file streammanager.h.

Referenced by getDebugOutputStream(), print(), and ~StreamManager().

OutputStream * StreamManager::eval_ostream [private]

The entered evaluate/result OutputStream.

The entered evaluate/result OutputStream, which is the fourth argument of the constructor.

Definition at line 164 of file streammanager.h.

Referenced by getEvalOutputStream(), print(), and ~StreamManager().

static StreamManager * StreamManager::instance = NULL [static, private]

Instance of StreamManager.

Instance of StreamManager to avoid duplicate existence of this object.

Definition at line 130 of file streammanager.h.

Referenced by getInstance(), and initInstance().

InputStream * StreamManager::query_istream [private]

The entered query InputStream.

The entered query InputStream, which is the first argument of the constructor.

Definition at line 146 of file streammanager.h.

Referenced by getQueryInputStream(), print(), and ~StreamManager().

InputStream * StreamManager::xml_istream [private]

The entered XML document InputStream.

The entered XML document InputStream, which is the second argument of the constructor.

Definition at line 152 of file streammanager.h.

Referenced by print(), and ~StreamManager().