SequoiaLob Class Reference

Public Member Functions
	close ()
	getSize ()
	getCreateTime ()
	getModificationTime ()
	write (string $buffer)
	read (integer|SequoiaINT64 $length)
	seek (integer|SequoiaINT64 $offset, integer $whence=SDB_LOB_SET)
	lock (integer|SequoiaINT64 offset, integer|SequoiaINT64 length)
	lockAndSeek (integer|SequoiaINT64 offset, integer|SequoiaINT64 length)
	isEof ()

Public Attributes
const	SDB_LOB_SET 0
const	SDB_LOB_CUR 1
const	SDB_LOB_END 2

Detailed Description

SequoiaLob Class. To get this Class object must be call SequoiaCL::openLob.

Member Function Documentation

SequoiaLob::close

(

)

Close lob.

Returns

Returns the result, default return array.

Return values

array	array( 'errno' => 0 )
string	{ "errno": 0 }

Example:

$err = $lobObj -> close() ;
if( $err['errno'] != 0 ) {
   echo "Failed to close lob, error code: ".$err['errno'] ;
   return ;
}

SequoiaLob::getCreateTime

(

)

Get the lob create time (millisecond).

Returns

Returns the create time.

Return values

integer|SequoiaINT64

millisecond

Example:

$times = $lobObj -> getCreateTime() ;
$err = $db -> getLastErrorMsg() ;
if( $err['errno'] != 0 ) {
   echo "Failed to get lob create time, error code: ".$err['errno'] ;
   return ;
}
echo "Lob create time is: ".$times ;

SequoiaLob::getModificationTime

(

)

Get the lob last modification time (millisecond).

Returns

Returns the create time.

Return values

integer|SequoiaINT64

millisecond

Example:

$times = $lobObj -> getModificationTime() ;
$err = $db -> getLastErrorMsg() ;
if( $err['errno'] != 0 ) {
   echo "Failed to get lob modification time, error code: ".$err['errno'] ;
   return ;
}
echo "Lob modification time is: ".$times ;

SequoiaLob::getSize

(

)

Get the lob size.

Returns

Returns the number of lob size.

Return values

integer|SequoiaINT64

lob size

Example:

$lobSize = $lobObj -> getSize() ;
$err = $db -> getLastErrorMsg() ;
if( $err['errno'] != 0 ) {
   echo "Failed to get lob size, error code: ".$err['errno'] ;
   return ;
}
echo "Lob size is: ".$lobSize ;

SequoiaLob::isEof

(

)

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

Returns

Returns the result.

Return values

boolean

isEof

Example:

$err = $lobObj -> seek( 0, SDB_LOB_END ) ;
if( $err['errno'] != 0 ) {
   echo "Failed to call seek, error code: ".$err['errno'] ;
   return ;
}
$result = $lobObj -> isEof() ;
var_dump ( $result ) ;

SequoiaLob::lock	(	integer|SequoiaINT64	offset,
		integer|SequoiaINT64	length
	)

Lock LOB section for write mode.

Parameters

$offset	an integer or the SequoiaINT64 object argument. The lock start position.
$length	an integer or the SequoiaINT64 object argument. The lock length, -1 means lock to the end of lob.

Returns

Returns the result, default return array.

Return values

array	array( 'errno' => 0 )
string	{ "errno": 0 }

Example:

$err = $lobObj -> lock( 10, 100 ) ;
if( $err['errno'] != 0 ) {
   echo "Failed to call lock, error code: ".$err['errno'] ;
   return ;
}

SequoiaLob::lockAndSeek	(	integer|SequoiaINT64	offset,
		integer|SequoiaINT64	length
	)

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

Parameters

$offset	an integer or the SequoiaINT64 object argument. The lock start position.
$length	an integer or the SequoiaINT64 object argument. The lock length, -1 means lock to the end of lob.

Returns

Returns the result, default return array.

Return values

array	array( 'errno' => 0 )
string	{ "errno": 0 }

Example:

$err = $lobObj -> lockAndSeek( 10, 100 ) ;
if( $err['errno'] != 0 ) {
   echo "Failed to call lockAndSeek, error code: ".$err['errno'] ;
   return ;
}

SequoiaLob::read

(

integer|SequoiaINT64

$length

)

Read lob.

Parameters

$length

an integer or the SequoiaINT64 object argument. The length want to read.

Returns

Returns the string of read.

Return values

string

read buffer

Example:

$buffer = $lobObj -> read( 5 ) ;
$err = $db -> getLastErrorMsg() ;
if( $err['errno'] != 0 ) {
   echo "Failed to read lob, error code: ".$err['errno'] ;
   return ;
}

SequoiaLob::seek	(	integer|SequoiaINT64	$offset,
		integer	$whence = SDB_LOB_SET
	)

Seek the place to read or write.

Parameters

$offset	an integer or the SequoiaINT64 object argument. Lob offset position.
$whence	an integer argument. Where to start position. SDB_LOB_SET : Set position equal to offset bytes. SDB_LOB_CUR : Set position to current location plus offset. SDB_LOB_END : Set position to end of lob plus offset.

Returns

Returns the result, default return array.

Return values

array	array( 'errno' => 0 )
string	{ "errno": 0 }

Example:

$err = $lobObj -> seek( 10, SDB_LOB_CUR ) ;
if( $err['errno'] != 0 ) {
   echo "Failed to call seek, error code: ".$err['errno'] ;
   return ;
}

SequoiaLob::write

(

string

$buffer

)

Write lob.

Parameters

$buffer

the string argument. The buffer of write.

Returns

Returns the result, default return array.

Return values

array	array( 'errno' => 0 )
string	{ "errno": 0 }

Example:

$err = $lobObj -> write( 'hello' ) ;
if( $err['errno'] != 0 ) {
   echo "Failed to write lob, error code: ".$err['errno'] ;
   return ;
}

Member Data Documentation

const SequoiaLob::SDB_LOB_CUR 1

Set position to current location plus offset.

const SequoiaLob::SDB_LOB_END 2

Set position to end of lob plus offset.

const SequoiaLob::SDB_LOB_SET 0

Set position equal to offset bytes.

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

• class_lob.php