forked from oracle/python-cx_Oracle
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathcxoDbType.c
More file actions
266 lines (240 loc) · 9.02 KB
/
cxoDbType.c
File metadata and controls
266 lines (240 loc) · 9.02 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
//-----------------------------------------------------------------------------
// Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// cxoDbType.c
// Defines the objects used for identifying all types used by the database.
//-----------------------------------------------------------------------------
#include "cxoModule.h"
//-----------------------------------------------------------------------------
// cxoDbType_free()
// Free the database type object.
//-----------------------------------------------------------------------------
static void cxoDbType_free(cxoDbType *dbType)
{
Py_TYPE(dbType)->tp_free((PyObject*) dbType);
}
//-----------------------------------------------------------------------------
// cxoDbType_repr()
// Return a string representation of a queue.
//-----------------------------------------------------------------------------
static PyObject *cxoDbType_repr(cxoDbType *dbType)
{
PyObject *module, *name, *dbTypeName, *result;
dbTypeName = PyUnicode_DecodeASCII(dbType->name, strlen(dbType->name),
NULL);
if (!dbTypeName)
return NULL;
if (cxoUtils_getModuleAndName(Py_TYPE(dbType), &module, &name) < 0) {
Py_DECREF(dbTypeName);
return NULL;
}
result = cxoUtils_formatString("<%s.%s %s>",
PyTuple_Pack(3, module, name, dbTypeName));
Py_DECREF(module);
Py_DECREF(name);
Py_DECREF(dbTypeName);
return result;
}
//-----------------------------------------------------------------------------
// cxoDbType_richCompare()
// Peforms a comparison between the database type and another Python object.
// Equality (and inequality) are used to match database API types with their
// associated database types.
//-----------------------------------------------------------------------------
static PyObject *cxoDbType_richCompare(cxoDbType* dbType, PyObject* obj,
int op)
{
cxoApiType *apiType;
int status, equal;
// only equality and inequality can be checked
if (op != Py_EQ && op != Py_NE) {
Py_INCREF(Py_NotImplemented);
return Py_NotImplemented;
}
// check for exact object
equal = 0;
if (obj == (PyObject*) dbType) {
equal = 1;
// check for API type
} else {
status = PyObject_IsInstance(obj, (PyObject*) &cxoPyTypeApiType);
if (status < 0)
return NULL;
if (status == 1) {
apiType = (cxoApiType*) obj;
status = PySequence_Contains(apiType->dbTypes, (PyObject*) dbType);
if (status < 0)
return NULL;
equal = (status == 1) ? 1 : 0;
}
}
// determine return value
if ((equal && op == Py_EQ) || (!equal && op == Py_NE)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
//-----------------------------------------------------------------------------
// cxoDbType_hash()
// Return a hash value for the instance.
//-----------------------------------------------------------------------------
static Py_hash_t cxoDbType_hash(cxoDbType *dbType)
{
return (Py_hash_t) dbType->num;
}
//-----------------------------------------------------------------------------
// cxoDbType_fromDataTypeInfo()
// Return the database type given the data type info available from ODPI-C.
//-----------------------------------------------------------------------------
cxoDbType *cxoDbType_fromDataTypeInfo(dpiDataTypeInfo *info)
{
char message[120];
switch (info->oracleTypeNum) {
case DPI_ORACLE_TYPE_VARCHAR:
return cxoDbTypeVarchar;
case DPI_ORACLE_TYPE_NVARCHAR:
return cxoDbTypeNvarchar;
case DPI_ORACLE_TYPE_CHAR:
return cxoDbTypeChar;
case DPI_ORACLE_TYPE_NCHAR:
return cxoDbTypeNchar;
case DPI_ORACLE_TYPE_ROWID:
return cxoDbTypeRowid;
case DPI_ORACLE_TYPE_RAW:
return cxoDbTypeRaw;
case DPI_ORACLE_TYPE_NATIVE_DOUBLE:
return cxoDbTypeBinaryDouble;
case DPI_ORACLE_TYPE_NATIVE_FLOAT:
return cxoDbTypeBinaryFloat;
case DPI_ORACLE_TYPE_NATIVE_INT:
return cxoDbTypeBinaryInteger;
case DPI_ORACLE_TYPE_NUMBER:
return cxoDbTypeNumber;
case DPI_ORACLE_TYPE_DATE:
return cxoDbTypeDate;
case DPI_ORACLE_TYPE_TIMESTAMP:
return cxoDbTypeTimestamp;
case DPI_ORACLE_TYPE_TIMESTAMP_TZ:
return cxoDbTypeTimestampTZ;
case DPI_ORACLE_TYPE_TIMESTAMP_LTZ:
return cxoDbTypeTimestampLTZ;
case DPI_ORACLE_TYPE_INTERVAL_DS:
return cxoDbTypeIntervalDS;
case DPI_ORACLE_TYPE_INTERVAL_YM:
return cxoDbTypeIntervalYM;
case DPI_ORACLE_TYPE_CLOB:
return cxoDbTypeClob;
case DPI_ORACLE_TYPE_NCLOB:
return cxoDbTypeNclob;
case DPI_ORACLE_TYPE_BLOB:
return cxoDbTypeBlob;
case DPI_ORACLE_TYPE_BFILE:
return cxoDbTypeBfile;
case DPI_ORACLE_TYPE_STMT:
return cxoDbTypeCursor;
case DPI_ORACLE_TYPE_OBJECT:
return cxoDbTypeObject;
case DPI_ORACLE_TYPE_LONG_VARCHAR:
return cxoDbTypeLong;
case DPI_ORACLE_TYPE_LONG_RAW:
return cxoDbTypeLongRaw;
case DPI_ORACLE_TYPE_BOOLEAN:
return cxoDbTypeBoolean;
default:
break;
}
snprintf(message, sizeof(message), "Oracle type %d not supported.",
info->oracleTypeNum);
cxoError_raiseFromString(cxoNotSupportedErrorException, message);
return NULL;
}
//-----------------------------------------------------------------------------
// cxoDbType_fromTransformNum()
// Return the database type given the transformation number.
//-----------------------------------------------------------------------------
cxoDbType *cxoDbType_fromTransformNum(cxoTransformNum transformNum)
{
char message[120];
switch (transformNum) {
case CXO_TRANSFORM_BINARY:
return cxoDbTypeRaw;
case CXO_TRANSFORM_BFILE:
return cxoDbTypeBfile;
case CXO_TRANSFORM_BLOB:
return cxoDbTypeBlob;
case CXO_TRANSFORM_BOOLEAN:
return cxoDbTypeBoolean;
case CXO_TRANSFORM_CLOB:
return cxoDbTypeClob;
case CXO_TRANSFORM_CURSOR:
return cxoDbTypeCursor;
case CXO_TRANSFORM_DATE:
case CXO_TRANSFORM_DATETIME:
return cxoDbTypeDate;
case CXO_TRANSFORM_DECIMAL:
case CXO_TRANSFORM_FLOAT:
case CXO_TRANSFORM_INT:
return cxoDbTypeNumber;
case CXO_TRANSFORM_FIXED_CHAR:
return cxoDbTypeChar;
case CXO_TRANSFORM_FIXED_NCHAR:
return cxoDbTypeNchar;
case CXO_TRANSFORM_LONG_BINARY:
return cxoDbTypeLongRaw;
case CXO_TRANSFORM_LONG_STRING:
return cxoDbTypeLong;
case CXO_TRANSFORM_NATIVE_DOUBLE:
return cxoDbTypeBinaryDouble;
case CXO_TRANSFORM_NATIVE_FLOAT:
return cxoDbTypeBinaryFloat;
case CXO_TRANSFORM_NATIVE_INT:
return cxoDbTypeBinaryInteger;
case CXO_TRANSFORM_NCLOB:
return cxoDbTypeNclob;
case CXO_TRANSFORM_NSTRING:
return cxoDbTypeNvarchar;
case CXO_TRANSFORM_OBJECT:
return cxoDbTypeObject;
case CXO_TRANSFORM_ROWID:
return cxoDbTypeRowid;
case CXO_TRANSFORM_NONE:
case CXO_TRANSFORM_STRING:
return cxoDbTypeVarchar;
case CXO_TRANSFORM_TIMEDELTA:
return cxoDbTypeIntervalDS;
case CXO_TRANSFORM_TIMESTAMP:
return cxoDbTypeTimestamp;
case CXO_TRANSFORM_TIMESTAMP_LTZ:
return cxoDbTypeTimestampLTZ;
case CXO_TRANSFORM_TIMESTAMP_TZ:
return cxoDbTypeTimestampTZ;
default:
break;
}
snprintf(message, sizeof(message), "transform %d not supported.",
transformNum);
cxoError_raiseFromString(cxoNotSupportedErrorException, message);
return NULL;
}
//-----------------------------------------------------------------------------
// declaration of members
//-----------------------------------------------------------------------------
static PyMemberDef cxoMembers[] = {
{ "name", T_STRING, offsetof(cxoDbType, name), READONLY },
{ NULL }
};
//-----------------------------------------------------------------------------
// Python type declaration
//-----------------------------------------------------------------------------
PyTypeObject cxoPyTypeDbType = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "cx_Oracle.DbType",
.tp_basicsize = sizeof(cxoDbType),
.tp_dealloc = (destructor) cxoDbType_free,
.tp_repr = (reprfunc) cxoDbType_repr,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_members = cxoMembers,
.tp_richcompare = (richcmpfunc) cxoDbType_richCompare,
.tp_hash = (hashfunc) cxoDbType_hash
};