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python-cx_Oracle/src/LobVar.c at master · pp3n/python-cx_Oracle · GitHub
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python-cx_Oracle
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LobVar.c
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src
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LobVar.c
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//-----------------------------------------------------------------------------
// Copyright 2016, 2017, Oracle and/or its affiliates. All rights reserved.
//
// Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
//
// Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
// Canada. All rights reserved.
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// LobVar.c
// Defines the routines for handling LOB variables.
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// Declaration of LOB variable functions.
//-----------------------------------------------------------------------------
static
int
LobVar_SetValue
(
udt_Variable
*
,
uint32_t
,
dpiData
*
,
PyObject
*
);
static
PyObject
*
LobVar_GetValue
(
udt_Variable
*
,
dpiData
*
);
//-----------------------------------------------------------------------------
// Python type declarations
//-----------------------------------------------------------------------------
DECLARE_VARIABLE_TYPE
(
g_CLOBVarType
,
CLOB
)
DECLARE_VARIABLE_TYPE
(
g_NCLOBVarType
,
NCLOB
)
DECLARE_VARIABLE_TYPE
(
g_BLOBVarType
,
BLOB
)
DECLARE_VARIABLE_TYPE
(
g_BFILEVarType
,
BFILE
)
//-----------------------------------------------------------------------------
// variable type declarations
//-----------------------------------------------------------------------------
static
udt_VariableType
vt_CLOB
=
{
(
SetValueProc
)
LobVar_SetValue
,
(
GetValueProc
)
LobVar_GetValue
,
&
g_CLOBVarType
,
// Python type
DPI_ORACLE_TYPE_CLOB
,
// Oracle type
DPI_NATIVE_TYPE_LOB
,
// native type
0
// element length
};
static
udt_VariableType
vt_NCLOB
=
{
(
SetValueProc
)
LobVar_SetValue
,
(
GetValueProc
)
LobVar_GetValue
,
&
g_NCLOBVarType
,
// Python type
DPI_ORACLE_TYPE_NCLOB
,
// Oracle type
DPI_NATIVE_TYPE_LOB
,
// native type
0
// element length
};
static
udt_VariableType
vt_BLOB
=
{
(
SetValueProc
)
LobVar_SetValue
,
(
GetValueProc
)
LobVar_GetValue
,
&
g_BLOBVarType
,
// Python type
DPI_ORACLE_TYPE_BLOB
,
// Oracle type
DPI_NATIVE_TYPE_LOB
,
// native type
0
// element length
};
static
udt_VariableType
vt_BFILE
=
{
(
SetValueProc
)
LobVar_SetValue
,
(
GetValueProc
)
LobVar_GetValue
,
&
g_BFILEVarType
,
// Python type
DPI_ORACLE_TYPE_BFILE
,
// Oracle type
DPI_NATIVE_TYPE_LOB
,
// native type
0
// element length
};
//-----------------------------------------------------------------------------
// LobVar_SetValue()
// Set the value of the variable.
//-----------------------------------------------------------------------------
static
int
LobVar_SetValue
(
udt_Variable
*
var
,
uint32_t
pos
,
dpiData
*
data
,
PyObject
*
value
)
{
const
char
*
encoding
;
udt_Buffer
buffer
;
int
status
;
if
(
var
->
type
==
&
vt_NCLOB
)
encoding
=
var
->
connection
->
encodingInfo
.
nencoding
;
else
encoding
=
var
->
connection
->
encodingInfo
.
encoding
;
if
(
cxBuffer_FromObject
(
&
buffer
,
value
,
encoding
)
<
0
)
return
-1
;
Py_BEGIN_ALLOW_THREADS
status
=
dpiLob_setFromBytes
(
data
->
value
.
asLOB
,
buffer
.
ptr
,
buffer
.
size
);
Py_END_ALLOW_THREADS
cxBuffer_Clear
(
&
buffer
);
if
(
status
<
0
)
return
Error_RaiseAndReturnInt
();
return
0
;
}
//-----------------------------------------------------------------------------
// LobVar_GetValue()
// Returns the value stored at the given array position.
//-----------------------------------------------------------------------------
static
PyObject
*
LobVar_GetValue
(
udt_Variable
*
var
,
dpiData
*
data
)
{
return
LOB_New
(
var
->
connection
,
var
->
type
->
oracleTypeNum
,
data
->
value
.
asLOB
);
}
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