{{ message }}
forked from oracle/python-cx_Oracle
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathcxoObjectType.c
More file actions
301 lines (266 loc) · 11 KB
/
Copy pathcxoObjectType.c
File metadata and controls
301 lines (266 loc) · 11 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
//-----------------------------------------------------------------------------
// Copyright 2016-2018, 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.
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// cxoObjectType.c
// Defines the routines for handling Oracle type information.
//-----------------------------------------------------------------------------
#include "cxoModule.h"
//-----------------------------------------------------------------------------
// Declaration of functions
//-----------------------------------------------------------------------------
static void cxoObjectType_free(cxoObjectType*);
static PyObject *cxoObjectType_repr(cxoObjectType*);
static PyObject *cxoObjectType_newObject(cxoObjectType*, PyObject*, PyObject*);
//-----------------------------------------------------------------------------
// declaration of methods for Python type "ObjectType"
//-----------------------------------------------------------------------------
static PyMethodDef cxoObjectTypeMethods[] = {
{ "newobject", (PyCFunction) cxoObjectType_newObject,
METH_VARARGS | METH_KEYWORDS },
{ NULL }
};
//-----------------------------------------------------------------------------
// declaration of members for Python type "ObjectType"
//-----------------------------------------------------------------------------
static PyMemberDef cxoObjectTypeMembers[] = {
{ "schema", T_OBJECT, offsetof(cxoObjectType, schema), READONLY },
{ "name", T_OBJECT, offsetof(cxoObjectType, name), READONLY },
{ "attributes", T_OBJECT, offsetof(cxoObjectType, attributes), READONLY },
{ "elementType", T_OBJECT, offsetof(cxoObjectType, elementType),
READONLY },
{ "iscollection", T_BOOL, offsetof(cxoObjectType, isCollection),
READONLY },
{ NULL }
};
//-----------------------------------------------------------------------------
// Python type declarations
//-----------------------------------------------------------------------------
PyTypeObject cxoPyTypeObjectType = {
PyVarObject_HEAD_INIT(NULL, 0)
"cx_Oracle.ObjectType", // tp_name
sizeof(cxoObjectType), // tp_basicsize
0, // tp_itemsize
(destructor) cxoObjectType_free, // tp_dealloc
0, // tp_print
0, // tp_getattr
0, // tp_setattr
0, // tp_compare
(reprfunc) cxoObjectType_repr, // tp_repr
0, // tp_as_number
0, // tp_as_sequence
0, // tp_as_mapping
0, // tp_hash
(ternaryfunc) cxoObjectType_newObject, // tp_call
0, // tp_str
0, // tp_getattro
0, // tp_setattro
0, // tp_as_buffer
Py_TPFLAGS_DEFAULT, // tp_flags
0, // tp_doc
0, // tp_traverse
0, // tp_clear
0, // tp_richcompare
0, // tp_weaklistoffset
0, // tp_iter
0, // tp_iternext
cxoObjectTypeMethods, // tp_methods
cxoObjectTypeMembers, // tp_members
0, // tp_getset
0, // tp_base
0, // tp_dict
0, // tp_descr_get
0, // tp_descr_set
0, // tp_dictoffset
0, // tp_init
0, // tp_alloc
0, // tp_new
0, // tp_free
0, // tp_is_gc
0 // tp_bases
};
//-----------------------------------------------------------------------------
// cxoObjectType_initialize()
// Initialize the object type with the information that is required.
//-----------------------------------------------------------------------------
static int cxoObjectType_initialize(cxoObjectType *objType,
cxoConnection *connection)
{
dpiObjectAttr **attributes;
dpiObjectTypeInfo info;
cxoObjectAttr *attr;
uint16_t i;
// get object type information
if (dpiObjectType_getInfo(objType->handle, &info) < 0)
return cxoError_raiseAndReturnInt();
Py_INCREF(connection);
objType->connection = connection;
objType->schema = cxoPyString_fromEncodedString(info.schema,
info.schemaLength, connection->encodingInfo.encoding);
if (!objType->schema)
return -1;
objType->name = cxoPyString_fromEncodedString(info.name, info.nameLength,
connection->encodingInfo.encoding);
if (!objType->name)
return -1;
objType->isCollection = info.isCollection;
objType->elementTransformNum =
cxoTransform_getNumFromDataTypeInfo(&info.elementTypeInfo);
if (info.elementTypeInfo.objectType) {
objType->elementType = (PyObject*) cxoObjectType_new(connection,
info.elementTypeInfo.objectType);
if (!objType->elementType)
return -1;
}
// allocate the attribute list (temporary and permanent) and dictionary
objType->attributes = PyList_New(info.numAttributes);
if (!objType->attributes)
return -1;
objType->attributesByName = PyDict_New();
if (!objType->attributesByName)
return -1;
// get the list of attributes from DPI
attributes = PyMem_Malloc(sizeof(dpiObjectAttr*) * info.numAttributes);
if (!attributes) {
PyErr_NoMemory();
return -1;
}
if (dpiObjectType_getAttributes(objType->handle, info.numAttributes,
attributes) < 0) {
PyMem_Free(attributes);
return cxoError_raiseAndReturnInt();
}
// create attribute information for each attribute
for (i = 0; i < info.numAttributes; i++) {
attr = cxoObjectAttr_new(connection, attributes[i]);
if (!attr) {
PyMem_Free(attributes);
return -1;
}
PyList_SET_ITEM(objType->attributes, i, (PyObject*) attr);
if (PyDict_SetItem(objType->attributesByName, attr->name,
(PyObject*) attr) < 0)
return -1;
}
PyMem_Free(attributes);
return 0;
}
//-----------------------------------------------------------------------------
// cxoObjectType_new()
// Allocate a new object type.
//-----------------------------------------------------------------------------
cxoObjectType *cxoObjectType_new(cxoConnection *connection,
dpiObjectType *handle)
{
cxoObjectType *objType;
objType = (cxoObjectType*)
cxoPyTypeObjectType.tp_alloc(&cxoPyTypeObjectType, 0);
if (!objType)
return NULL;
if (dpiObjectType_addRef(handle) < 0) {
Py_DECREF(objType);
cxoError_raiseAndReturnNull();
return NULL;
}
objType->handle = handle;
if (cxoObjectType_initialize(objType, connection) < 0) {
Py_DECREF(objType);
return NULL;
}
return objType;
}
//-----------------------------------------------------------------------------
// cxoObjectType_newByName()
// Create a new object type given its name.
//-----------------------------------------------------------------------------
cxoObjectType *cxoObjectType_newByName(cxoConnection *connection,
PyObject *name)
{
cxoObjectType *objType;
dpiObjectType *handle;
cxoBuffer buffer;
int status;
if (cxoBuffer_fromObject(&buffer, name,
connection->encodingInfo.encoding) < 0)
return NULL;
status = dpiConn_getObjectType(connection->handle, buffer.ptr,
buffer.size, &handle);
cxoBuffer_clear(&buffer);
if (status < 0)
return (cxoObjectType*) cxoError_raiseAndReturnNull();
objType = cxoObjectType_new(connection, handle);
dpiObjectType_release(handle);
return objType;
}
//-----------------------------------------------------------------------------
// cxoObjectType_free()
// Free the memory associated with an object type.
//-----------------------------------------------------------------------------
static void cxoObjectType_free(cxoObjectType *objType)
{
if (objType->handle) {
dpiObjectType_release(objType->handle);
objType->handle = NULL;
}
Py_CLEAR(objType->connection);
Py_CLEAR(objType->schema);
Py_CLEAR(objType->name);
Py_CLEAR(objType->attributes);
Py_CLEAR(objType->attributesByName);
Py_CLEAR(objType->elementType);
Py_TYPE(objType)->tp_free((PyObject*) objType);
}
//-----------------------------------------------------------------------------
// cxoObjectType_repr()
// Return a string representation of the object type.
//-----------------------------------------------------------------------------
static PyObject *cxoObjectType_repr(cxoObjectType *objType)
{
PyObject *module, *name, *result;
if (cxoUtils_getModuleAndName(Py_TYPE(objType), &module, &name) < 0)
return NULL;
result = cxoUtils_formatString("<%s.%s %s.%s>",
PyTuple_Pack(4, module, name, objType->schema, objType->name));
Py_DECREF(module);
Py_DECREF(name);
return result;
}
//-----------------------------------------------------------------------------
// cxoObjectType_newObject()
// Factory function for creating objects of the type which can be bound.
//-----------------------------------------------------------------------------
static PyObject *cxoObjectType_newObject(cxoObjectType *objType,
PyObject *args, PyObject *keywordArgs)
{
static char *keywordList[] = { "value", NULL };
PyObject *initialValue;
dpiObject *handle;
cxoObject *obj;
// parse arguments
initialValue = NULL;
if (!PyArg_ParseTupleAndKeywords(args, keywordArgs, "|O", keywordList,
&initialValue))
return NULL;
// get handle to newly created object
if (dpiObjectType_createObject(objType->handle, &handle) < 0)
return cxoError_raiseAndReturnNull();
// create the object
obj = (cxoObject*) cxoObject_new(objType, handle);
if (!obj) {
dpiObject_release(handle);
return NULL;
}
// populate collection, if applicable
if (initialValue) {
if (cxoObject_internalExtend(obj, initialValue) < 0) {
Py_DECREF(obj);
return NULL;
}
}
return (PyObject*) obj;
}
You can’t perform that action at this time.