sdbclient::sdbLob Class Reference

Database operation interfaces of large object. More...

#include <client.hpp>

Public Member Functions
	sdbLob ()
	Default constructor.
	~sdbLob ()
	Destructor.
INT32	close ()
	Close lob.
INT32	read (UINT32 len, CHAR *buf, UINT32 *read)
	Read lob.
INT32	write (const CHAR *buf, UINT32 len)
	Write lob.
INT32	seek (SINT64 size, SDB_LOB_SEEK whence)
	Seek the place to read.
INT32	lock (INT64 offset, INT64 length)
	lock LOB section for write mode.
INT32	lockAndSeek (INT64 offset, INT64 length)
	lock LOB section for write mode and seek to the offset position.
INT32	isClosed (BOOLEAN &flag)
	Test whether lob has been closed or not.
BOOLEAN	isClosed ()
	Test whether lob has been closed or not.
INT32	getOid (bson::OID &oid)
	Get the lob's oid.
bson::OID	getOid ()
	Get the lob's oid.
INT32	getSize (SINT64 *size)
	Get the lob's size.
SINT64	getSize ()
	Get the lob's size. The size of lob, or -1 when the lob is not be opened or has been closed.
INT32	getCreateTime (UINT64 *millis)
	Get lob's create time.
UINT64	getCreateTime ()
	Get lob's create time.
UINT64	getModificationTime ()
	Get lob's last modification time.
INT32	getPiecesInfoNum ()
	Get the count of lob's pieces.
bson::BSONArray	getPiecesInfo ()
	Get lob's pieces.
BOOLEAN	isEof ()
	Check whether current offset has reached to the max size of current lob.

Public Attributes
_sdbLob *	pLob

Detailed Description

Database operation interfaces of large object.

Member Function Documentation

INT32 sdbclient::sdbLob::close ( )

inline

Close lob.

Return values

SDB_OK	Operation Success
Others	Operation Fail

INT32 sdbclient::sdbLob::getCreateTime ( UINT64 *  millis )

inline

Get lob's create time.

Parameters

[out]

millis

The create time in milliseconds of lob

Return values

SDB_OK	Operation Success
Others	Operation Fail

Deprecated:

Deprecated in version 2.x. Use "UINT64 getCreateTime ()" instead

UINT64 sdbclient::sdbLob::getCreateTime ( )

inline

Get lob's create time.

Return values

The	create time in milliseconds of lob or -1 when the lob does not be opened or has been closed

UINT64 sdbclient::sdbLob::getModificationTime ( )

inline

Get lob's last modification time.

Return values

The	modification time in milliseconds of lob or -1 when the lob does not be opened or has been closed

INT32 sdbclient::sdbLob::getOid ( bson::OID &  oid )

inline

Get the lob's oid.

Parameters

[out]

oid

The oid of the lob

Return values

SDB_OK	Operation Success
Others	Operation Fail

Deprecated:

Deprecated in version 2.x. Use "bson::OID getOid ()" instead

bson::OID sdbclient::sdbLob::getOid ( )

inline

Get the lob's oid.

Return values

The	oid of the lob or a empty Oid bson::OID() when the lob is not be opened or has been closed

bson::BSONArray sdbclient::sdbLob::getPiecesInfo ( )

inline

Get lob's pieces.

Return values

The	array of lob's pieces.

INT32 sdbclient::sdbLob::getPiecesInfoNum ( )

inline

Get the count of lob's pieces.

Return values

the	count of lob's pieces

INT32 sdbclient::sdbLob::getSize ( SINT64 *  size )

inline

Get the lob's size.

Parameters

[out]

size

The size of lob

Return values

SDB_OK	Operation Success
Others	Operation Fail

Deprecated:

Deprecated in version 2.x. Use "SINT64 getSize ()" instead

INT32 sdbclient::sdbLob::isClosed ( BOOLEAN &  flag )

inline

Test whether lob has been closed or not.

Parameters

[out]

flag

TRUE for lob has been closed, FALSE for not.

Return values

SDB_OK	Operation Success
Others	Operation Fail

Deprecated:

Deprecated in version 2.x. Use "BOOLEAN isClosed()" instead

BOOLEAN sdbclient::sdbLob::isClosed ( )

inline

Test whether lob has been closed or not.

Return values

TRUE	for lob has been closed, FALSE for not.

BOOLEAN sdbclient::sdbLob::isEof ( )

inline

Check whether current offset has reached to the max size of current lob.

Return values

Return

true if yes while false for not.

INT32 sdbclient::sdbLob::lock ( INT64  offset, INT64  length  )

inline

lock LOB section for write mode.

Parameters

[in]	offset	The lock start position
[in]	length	The lock length, -1 means lock to the end of lob

Return values

SDB_OK	Operation Success
Others	Operation Fail

INT32 sdbclient::sdbLob::lockAndSeek ( INT64  offset, INT64  length  )

inline

lock LOB section for write mode and seek to the offset position.

Parameters

[in]	offset	The lock start position
[in]	length	The lock length, -1 means lock to the end of lob

Return values

SDB_OK	Operation Success
Others	Operation Fail

INT32 sdbclient::sdbLob::read ( UINT32  len, CHAR *  buf, UINT32 *  read  )

inline

Read lob.

Parameters

[in]	len	The length want to read
[out]	buf	Put the data into buf
[out]	read	The length of read

Return values

SDB_OK	Operation Success
Others	Operation Fail

INT32 sdbclient::sdbLob::seek ( SINT64  size, SDB_LOB_SEEK  whence  )

inline

Seek the place to read.

Parameters

[in]	size	The size of seek
[in]	whence	The whence of seek

Return values

SDB_OK	Operation Success
Others	Operation Fail

INT32 sdbclient::sdbLob::write ( const CHAR *  buf, UINT32  len  )

inline

Write lob.

Parameters

[in]	buf	The buf of write
[in]	len	The length of write

Return values

SDB_OK	Operation Success
Others	Operation Fail

Member Data Documentation

sdbclient::sdbLob::pLob

A pointer of virtual base class _sdbLob

Class sdbLob is a shell for _sdbLob. We use pLob to call the methods in class _sdbLob.

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The documentation for this class was generated from the following file:

• client.hpp