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//-----------------------------------------------------------------------------
// Copyright (c) 2018, 2020, Oracle and/or its affiliates. All rights reserved.
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// cxoSodaDatabase.c
// Defines the routines for handling the SODA database.
//-----------------------------------------------------------------------------
#include "cxoModule.h"
//-----------------------------------------------------------------------------
// cxoSodaDatabase_new()
// Create a new SODA database object.
//-----------------------------------------------------------------------------
cxoSodaDatabase *cxoSodaDatabase_new(cxoConnection *connection)
{
cxoSodaDatabase *db;
PyObject *module;
// load JSON dump/load functions, if needed
if (!cxoJsonDumpFunction || !cxoJsonLoadFunction) {
module = PyImport_ImportModule("json");
if (!module)
return NULL;
if (!cxoJsonDumpFunction) {
cxoJsonDumpFunction = PyObject_GetAttrString(module, "dumps");
if (!cxoJsonDumpFunction)
return NULL;
}
if (!cxoJsonLoadFunction) {
cxoJsonLoadFunction = PyObject_GetAttrString(module, "loads");
if (!cxoJsonLoadFunction)
return NULL;
}
}
// create SODA database object
db = (cxoSodaDatabase*)
cxoPyTypeSodaDatabase.tp_alloc(&cxoPyTypeSodaDatabase, 0);
if (!db)
return NULL;
if (dpiConn_getSodaDb(connection->handle, &db->handle) < 0) {
Py_DECREF(db);
cxoError_raiseAndReturnNull();
return NULL;
}
Py_INCREF(connection);
db->connection = connection;
return db;
}
//-----------------------------------------------------------------------------
// cxoSodaDatabase_free()
// Free the memory associated with a SODA database.
//-----------------------------------------------------------------------------
static void cxoSodaDatabase_free(cxoSodaDatabase *db)
{
if (db->handle) {
dpiSodaDb_release(db->handle);
db->handle = NULL;
}
Py_CLEAR(db->connection);
Py_TYPE(db)->tp_free((PyObject*) db);
}
//-----------------------------------------------------------------------------
// cxoSodaDatabase_repr()
// Return a string representation of a SODA database.
//-----------------------------------------------------------------------------
static PyObject *cxoSodaDatabase_repr(cxoSodaDatabase *db)
{
PyObject *connectionRepr, *module, *name, *result;
connectionRepr = PyObject_Repr((PyObject*) db->connection);
if (!connectionRepr)
return NULL;
if (cxoUtils_getModuleAndName(Py_TYPE(db), &module, &name) < 0) {
Py_DECREF(connectionRepr);
return NULL;
}
result = cxoUtils_formatString("<%s.%s on %s>",
PyTuple_Pack(3, module, name, connectionRepr));
Py_DECREF(module);
Py_DECREF(name);
Py_DECREF(connectionRepr);
return result;
}
//-----------------------------------------------------------------------------
// cxoSodaDatabase_createCollection()
// Create a SODA collection and return it.
//-----------------------------------------------------------------------------
static PyObject *cxoSodaDatabase_createCollection(cxoSodaDatabase *db,
PyObject *args, PyObject *keywordArgs)
{
static char *keywordList[] = { "name", "metadata", "mapMode", NULL };
cxoBuffer nameBuffer, metadataBuffer;
PyObject *nameObj, *metadataObj;
cxoSodaCollection *coll;
const char *encoding;
dpiSodaColl *handle;
int status, mapMode;
uint32_t flags;
// parse arguments
mapMode = 0;
nameObj = metadataObj = NULL;
if (!PyArg_ParseTupleAndKeywords(args, keywordArgs, "O|Op", keywordList,
&nameObj, &metadataObj, &mapMode))
return NULL;
encoding = db->connection->encodingInfo.encoding;
if (cxoBuffer_fromObject(&nameBuffer, nameObj, encoding) < 0)
return NULL;
if (cxoUtils_processJsonArg(metadataObj, &metadataBuffer) < 0) {
cxoBuffer_clear(&nameBuffer);
return NULL;
}
// create collection
if (cxoConnection_getSodaFlags(db->connection, &flags) < 0)
return NULL;
if (mapMode)
flags |= DPI_SODA_FLAGS_CREATE_COLL_MAP;
Py_BEGIN_ALLOW_THREADS
status = dpiSodaDb_createCollection(db->handle, nameBuffer.ptr,
nameBuffer.size, metadataBuffer.ptr, metadataBuffer.size, flags,
&handle);
Py_END_ALLOW_THREADS
cxoBuffer_clear(&nameBuffer);
cxoBuffer_clear(&metadataBuffer);
if (status < 0)
return cxoError_raiseAndReturnNull();
coll = cxoSodaCollection_new(db, handle);
if (!coll) {
dpiSodaColl_release(handle);
return NULL;
}
return (PyObject*) coll;
}
//-----------------------------------------------------------------------------
// cxoSodaDatabase_createDocument()
// Create a SODA document with the specified key, content and media type.
//-----------------------------------------------------------------------------
static PyObject *cxoSodaDatabase_createDocument(cxoSodaDatabase *db,
PyObject *args, PyObject *keywordArgs)
{
static char *keywordList[] = { "content", "key", "mediaType", NULL };
cxoBuffer contentBuffer, keyBuffer, mediaTypeBuffer;
PyObject *contentObj, *keyObj, *mediaTypeObj;
const char *encoding;
dpiSodaDoc *doc;
int status;
// parse arguments
keyObj = mediaTypeObj = NULL;
if (!PyArg_ParseTupleAndKeywords(args, keywordArgs, "O|OO", keywordList,
&contentObj, &keyObj, &mediaTypeObj))
return NULL;
// content must be converted to string if it is a dictionary
if (PyDict_Check(contentObj)) {
contentObj = PyObject_CallFunctionObjArgs(cxoJsonDumpFunction,
contentObj, NULL);
if (!contentObj)
return NULL;
}
// get buffers for each of the content, key and media type parameters
if (cxoUtils_processJsonArg(contentObj, &contentBuffer) < 0)
return NULL;
encoding = db->connection->encodingInfo.encoding;
if (cxoBuffer_fromObject(&keyBuffer, keyObj, encoding) < 0) {
cxoBuffer_clear(&contentBuffer);
return NULL;
}
if (cxoBuffer_fromObject(&mediaTypeBuffer, mediaTypeObj, encoding) < 0) {
cxoBuffer_clear(&contentBuffer);
cxoBuffer_clear(&keyBuffer);
return NULL;
}
// create SODA document
status = dpiSodaDb_createDocument(db->handle, keyBuffer.ptr,
keyBuffer.size, contentBuffer.ptr, contentBuffer.size,
mediaTypeBuffer.ptr, mediaTypeBuffer.size, DPI_SODA_FLAGS_DEFAULT,
&doc);
cxoBuffer_clear(&contentBuffer);
cxoBuffer_clear(&keyBuffer);
cxoBuffer_clear(&mediaTypeBuffer);
if (status < 0)
return cxoError_raiseAndReturnNull();
return (PyObject*) cxoSodaDoc_new(db, doc);
}
//-----------------------------------------------------------------------------
// cxoSodaDatabase_getCollectionNames()
// Return a list of the names of the collections found in the database.
//-----------------------------------------------------------------------------
static PyObject *cxoSodaDatabase_getCollectionNames(cxoSodaDatabase *db,
PyObject *args, PyObject *keywordArgs)
{
static char *keywordList[] = { "startName", "limit", NULL };
PyObject *startName, *result, *temp;
dpiSodaCollNames collNames;
cxoBuffer startNameBuffer;
uint32_t limit, i, flags;
const char *encoding;
int status;
// parse arguments
limit = 0;
startName = NULL;
if (!PyArg_ParseTupleAndKeywords(args, keywordArgs, "|Oi", keywordList,
&startName, &limit))
return NULL;
// get collection names from the database
encoding = db->connection->encodingInfo.encoding;
if (cxoBuffer_fromObject(&startNameBuffer, startName, encoding) < 0)
return NULL;
if (cxoConnection_getSodaFlags(db->connection, &flags) < 0)
return NULL;
Py_BEGIN_ALLOW_THREADS
status = dpiSodaDb_getCollectionNames(db->handle,
(const char*) startNameBuffer.ptr, startNameBuffer.size, limit,
flags, &collNames);
Py_END_ALLOW_THREADS
cxoBuffer_clear(&startNameBuffer);
if (status < 0)
return cxoError_raiseAndReturnNull();
// transform results into a Python list
result = PyList_New(collNames.numNames);
if (!result)
return NULL;
for (i = 0; i < collNames.numNames; i++) {
temp = PyUnicode_Decode(collNames.names[i], collNames.nameLengths[i],
encoding, NULL);
if (!temp) {
Py_DECREF(result);
return NULL;
}
PyList_SET_ITEM(result, i, temp);
}
if (dpiSodaDb_freeCollectionNames(db->handle, &collNames) < 0) {
Py_DECREF(result);
return cxoError_raiseAndReturnNull();
}
return result;
}
//-----------------------------------------------------------------------------
// cxoSodaDatabase_openCollection()
// Open a SODA collection and return it.
//-----------------------------------------------------------------------------
static PyObject *cxoSodaDatabase_openCollection(cxoSodaDatabase *db,
PyObject *nameObj)
{
cxoSodaCollection *coll;
cxoBuffer nameBuffer;
dpiSodaColl *handle;
uint32_t flags;
int status;
// open collection
if (cxoBuffer_fromObject(&nameBuffer, nameObj,
db->connection->encodingInfo.encoding) < 0)
return NULL;
if (cxoConnection_getSodaFlags(db->connection, &flags) < 0)
return NULL;
Py_BEGIN_ALLOW_THREADS
status = dpiSodaDb_openCollection(db->handle, nameBuffer.ptr,
nameBuffer.size, flags, &handle);
Py_END_ALLOW_THREADS
cxoBuffer_clear(&nameBuffer);
if (status < 0)
return cxoError_raiseAndReturnNull();
if (!handle)
Py_RETURN_NONE;
coll = cxoSodaCollection_new(db, handle);
if (!coll) {
dpiSodaColl_release(handle);
return NULL;
}
return (PyObject*) coll;
}
//-----------------------------------------------------------------------------
// declaration of methods for Python type
//-----------------------------------------------------------------------------
static PyMethodDef cxoMethods[] = {
{ "createCollection", (PyCFunction) cxoSodaDatabase_createCollection,
METH_VARARGS | METH_KEYWORDS },
{ "createDocument", (PyCFunction) cxoSodaDatabase_createDocument,
METH_VARARGS | METH_KEYWORDS },
{ "getCollectionNames", (PyCFunction) cxoSodaDatabase_getCollectionNames,
METH_VARARGS | METH_KEYWORDS },
{ "openCollection", (PyCFunction) cxoSodaDatabase_openCollection, METH_O },
{ NULL }
};
//-----------------------------------------------------------------------------
// declaration of Python type
//-----------------------------------------------------------------------------
PyTypeObject cxoPyTypeSodaDatabase = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "cx_Oracle.SodaDatabase",
.tp_basicsize = sizeof(cxoSodaDatabase),
.tp_dealloc = (destructor) cxoSodaDatabase_free,
.tp_repr = (reprfunc) cxoSodaDatabase_repr,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_methods = cxoMethods
};
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