def __execute_query(self, sql: str, params: tuple = ()):
"""Executes a SELECT on remote database"""
self.__raise_error_if_closed()
self.row_count = 0
self.__description: list = []
the_cursor_util = CursorUtil()
parms_dict: dict = the_cursor_util.get_http_parameters_dict(params)
is_prepared_statement = False
if len(parms_dict) > 0:
is_prepared_statement = True
self.__result_set_info = self.__aceql_http_api.execute_query(sql, is_prepared_statement, parms_dict)
# Appends the files to delete
self.__filelist.append(self.__result_set_info.get_filename())
self.__rowcount = self.__result_set_info.get_row_count()
AceQLDebug.debug("self.rowcount: " + str(self.__rowcount))
AceQLDebug.debug("filename : " + self.__result_set_info.get_filename())
# first build the description for Cursor.description
self.__build_description()
self.__row_parser = RowParser(self.__result_set_info.get_filename(), self.__result_set_info.get_row_count())
def execute_server_query(self, server_query_executor_class_name: str, parameters: List):
"""Executes a remote server query that returns a SELECT JDBC ResultSet on the remote database
:param server_query_executor_class_name: the remote ServerQueryExecutor interface implementation name with
package info
:param parameters: the parameters to pass to the remote ServerQueryExecutor.executeQuery() implementation.
"""
if not ConnectionUtil.is_get_database_info_supported(self.__connection):
raise Exception("AceQL Server version must be >= " + ConnectionUtil.EXECUTE_SERVER_QUERY_MIN_SERVER_VERSION
+ " in order to call execute_server_query()")
self.__raise_error_if_closed()
self.row_count = 0
self.__description: list = []
self.__result_set_info = self.__aceql_http_api.execute_server_query(server_query_executor_class_name,
parameters)
# Appends the files to delete
self.__filelist.append(self.__result_set_info.get_filename())
self.__rowcount = self.__result_set_info.get_row_count()
AceQLDebug.debug("self.rowcount: " + str(self.__rowcount))
AceQLDebug.debug("filename : " + self.__result_set_info.get_filename())
# first build the description for Cursor.description
self.__build_description()
self.__row_parser = RowParser(self.__result_set_info.get_filename(), self.__result_set_info.get_row_count())
def __execute_update(self, sql: str, params: tuple = ()) -> int:
"""Executes and update operation on remote database"""
blob_streams: list = []
try:
the_cursor_util: CursorUtil = CursorUtil()
parms_dict: dict = the_cursor_util.get_http_parameters_dict(params)
blob_ids = the_cursor_util.blob_ids
blob_streams = the_cursor_util.blob_streams
blob_lengths = the_cursor_util.blob_lengths
cpt = 0
for blob_id in blob_ids:
self.__aceql_http_api.blob_upload(blob_id, blob_streams[cpt], blob_lengths[cpt])
cpt += 1
AceQLDebug.debug("parms_dict: " + str(parms_dict))
is_prepared_statement = False
if len(parms_dict) > 0:
is_prepared_statement = True
rows: int = self.__aceql_http_api.execute_update(sql, is_prepared_statement, parms_dict)
self.__rowcount = rows
return rows
finally:
for blob_stream in blob_streams:
blob_stream.close()
def __build_description(self):
""" Builds the .description property"""
self.__raise_error_if_closed()
self.__description: list = []
if self.__rowcount < 1:
return
row_parser: RowParser = None
try:
row_parser = RowParser(self.__result_set_info.get_filename(), self.__rowcount)
row_parser.build_next_row() # read first row to get the column names, only way to do it...
aceql_types: dict = row_parser.get_types_per_col_index()
aceql_names: dict = row_parser.column_names_per_index()
AceQLDebug.debug("aceql_types : " + str(aceql_types))
AceQLDebug.debug("aceql_names: " + str(aceql_names))
index = 0
while index < len(aceql_types):
name_and_type = list()
# name_and_type.append(aceql_names[index])
# name_and_type.append(aceql_types[index])
aceql_name = aceql_names.get(index)
if aceql_name is not None:
name_and_type.append(aceql_name)
name_and_type.append(aceql_types.get(index))
# Append 5 non set values
name_and_type.append(None)
name_and_type.append(None)
name_and_type.append(None)
name_and_type.append(None)
name_and_type.append(None)
the_tup = tuple(name_and_type)
self.__description.append(the_tup)
index += 1
finally:
if row_parser is not None:
row_parser.close()
def get_blob_length(self, blob_id: str) -> int:
""" Gets the blob length. """
try:
if blob_id is None:
raise TypeError("blob_id is null!")
action = "get_blob_length"
dict_params: dict = {"blob_id": blob_id}
url_withaction = self._url + action
AceQLDebug.debug("urlWithaction: " + url_withaction)
AceQLDebug.debug("dictParams : " + str(dict_params))
# r = requests.post('http://httpbin.org/post', data = {'key':'value'})
if self.__timeout is None:
response = requests.post(url_withaction,
headers=self.__headers,
data=dict_params,
proxies=self.__proxies,
auth=self.__auth)
else:
response = requests.post(url_withaction,
headers=self.__headers,
data=dict_params,
proxies=self.__proxies,
auth=self.__auth,
timeout=self.__timeout)
self.__http_status_code = response.status_code
result = response.text
AceQLDebug.debug("result: " + result)
result_analyzer = ResultAnalyzer(result, self.__http_status_code)
if not result_analyzer.is_status_ok():
raise Error(result_analyzer.get_error_message(),
result_analyzer.get_error_type(), None, None,
self.__http_status_code)
length_str = result_analyzer.get_value("length")
AceQLDebug.debug("result: " + length_str + ":")
return int(length_str)
except Exception as e:
if isinstance(e, Error):
raise
else:
raise Error(str(e), 0, e, None, self.__http_status_code)
def is_status_ok(self) -> bool:
"""
Determines whether the SQL correctly executed on server side.
<returns><c>true</c> if [is status ok]; otherwise, <c>false</c>.</returns>
"""
with open(self.__filename, mode="r", encoding="utf-8") as fd:
status_ok = False
while True:
s = fd.readline()
if s == '':
break
s = s.strip()
AceQLDebug.debug(s)
if s.startswith("\"status\":"):
AceQLDebug.debug("status: " + s + "!")
if s.endswith("\"OK\","):
status_ok = True
break
if not status_ok:
self.parse_error_keywords()
return status_ok
def treat_result(self, filename: str):
file_out = None
if self.__aceQLHttpApi.is_gzip_result():
file_out = filename[0:len(filename) - 4] + ".ungzipped.txt"
FileUtil.decompress(filename, file_out)
if AceQLDebugParms.DELETE_FILES:
CursorUtil.remove_file_safe(filename)
else:
file_out = filename
AceQLDebug.debug("Before StreamResultAnalyzer")
result_analyzer = StreamResultAnalyzer(
file_out, self.__aceQLHttpApi.get_http_status_code())
if not result_analyzer.is_status_ok():
if AceQLDebugParms.DELETE_FILES:
CursorUtil.remove_file_safe(filename)
raise Error(result_analyzer.get_error_message(),
result_analyzer.get_error_type(), None, None,
self.__aceQLHttpApi.get_http_status_code())
row_counter = RowCounter(file_out)
row_count = row_counter.count()
result_set_info = ResultSetInfo(file_out, row_count)
AceQLDebug.debug("Before resultSetInfo")
return result_set_info
def get_blob_length(self, column_index: int) -> int:
""" Gets the remote BLOB length on a column in the current row
To be used if progress indicator needed.
"""
self.__raise_error_if_closed()
if column_index is None:
raise TypeError("column_index is null!")
values_per_column_index: dict = self.__row_parser.get_values_per_col_index()
AceQLDebug.debug("values_per_column_index: " + str(values_per_column_index))
if values_per_column_index is None:
raise aceql.Error("Not positioned on a row. (No fetchone call done.)",
0, None, None, 200)
blob_id = values_per_column_index[column_index]
if AceQLDebugParms.DEBUG_ON:
print("blob_id: " + str(blob_id))
Cursor.check_blob_id(blob_id, column_index)
blob_length = self.__aceql_http_api.get_blob_length(blob_id)
return blob_length
def build_next_row(self):
"""Build the dictionaries of values per column name & values per column index for the next row"""
# No parse of course if no rows in file...
if self.__row_count == 0:
return False
# Stop parsing if end of file reached
if self.__rows_parsed >= self.__row_count:
self.__column_names_per_index = {}
self.__values_per_col_index = {}
return False
s = ""
while True:
line = self.__fd.readline()
if line == '':
break
line = line.strip()
if self.is_last_row(line):
self.__last_row += 1
break
# Case last row
if self.__last_row == self.__row_count:
if line == "]":
self.__last_row += 1
break
# doe not include closing array bracket
if not line.startswith("]"):
s += line
if s == '':
return
# AceQLDebug.print("s:" + s)
AceQLDebug.debug("")
AceQLDebug.debug("s : " + s)
AceQLDebug.debug("self.__last_row : " + str(self.__last_row))
s = s.replace("{", "")
s = s.replace("}", "")
s = "{" + s + "}"
resp = json.loads(s, object_pairs_hook=collections.OrderedDict)
index = 0
for key, value in resp.items():
# AceQLDebug.debug("key/value: " + str(key) + " " + str(value))
self.__column_names_per_index[index] = key
x = CursorUtil.get_utf8_value(value)
if str(x) == 'NULL':
self.__values_per_col_index[index] = None
else:
self.__values_per_col_index[index] = value
index += 1
# AceQLDebug.debug("key: %s , value: %s" % (key, self.__values_per_col_name [key]))
self.__rows_parsed += 1
return True
def execute_update(self, sql: str, is_prepared_statement: bool,
statement_parameters: dict):
"""Calls /execute_update API"""
try:
action = "execute_update"
AceQLExecutionUtil.check_values(is_prepared_statement, sql)
dict_params: dict = {"sql": sql}
AceQLExecutionUtil.set_is_prepared_statement(
dict_params, is_prepared_statement)
url_withaction = self.__url + action
AceQLDebug.debug("url_withaction: " + url_withaction)
AceQLDebug.debug("dict_params 1: " + str(dict_params))
if statement_parameters is not None:
if not isinstance(statement_parameters, dict):
raise TypeError(
"statement_parameters is not a dictionary!")
dict_params.update(statement_parameters)
AceQLDebug.debug("dictParams 2: " + str(dict_params))
# r = requests.post('http://httpbin.org/post', data = {'key':'value'})
# print("Before update request")
if self.__aceQLHttpApi.get_timeout() is None:
AceQLDebug.debug("UPDATE HERE 1")
response: Request = requests.post(
url_withaction,
headers=self.__aceQLHttpApi.get_headers(),
data=dict_params,
proxies=self.__aceQLHttpApi.get_proxies(),
auth=self.__aceQLHttpApi.get_auth())
else:
AceQLDebug.debug("UPDATE HERE 2")
response: Request = requests.post(
url_withaction,
headers=self.__aceQLHttpApi.get_headers(),
data=dict_params,
proxies=self.__aceQLHttpApi.get_proxies(),
auth=self.__aceQLHttpApi.get_auth(),
timeout=self.__aceQLHttpApi.get_timeout())
self.__aceQLHttpApi.set_http_status_code(response.status_code)
result = response.text
# print("self.__http_status_code: " + str(self.__http_status_code ))
# print("result : " + str(result))
AceQLDebug.debug("result: " + result)
result_analyzer = ResultAnalyzer(
result, self.__aceQLHttpApi.get_http_status_code())
if not result_analyzer.is_status_ok():
raise Error(result_analyzer.get_error_message(),
result_analyzer.get_error_type(), None, None,
self.__aceQLHttpApi.get_http_status_code())
row_count = result_analyzer.get_int_value("row_count")
return row_count
except Exception as e:
if isinstance(e, Error):
raise
else:
raise Error(str(e), 0, e, None,
self.__aceQLHttpApi.get_http_status_code())
def execute_batch(self, sql: str, batch_file_parameters: str):
try:
action = "prepared_statement_execute_batch"
AceQLExecutionUtil.check_values(True, sql)
url_withaction = self.__url + action
AceQLDebug.debug("url_withaction: " + url_withaction)
blob_id: str = os.path.basename(batch_file_parameters)
length: int = os.path.getsize(batch_file_parameters)
with open(batch_file_parameters, "rb") as fd:
self.__aceQLHttpApi.blob_upload(blob_id, fd, length)
dict_params: dict = {"sql": sql, "blob_id": blob_id}
AceQLDebug.debug("dict_params: " + str(dict_params))
# r = requests.post('http://httpbin.org/post', data = {'key':'value'})
# print("Before update request")
# if self.__timeout is None:
# response: Request = requests.post(url_withaction, headers=self.__headers, data=dict_params,
# proxies=self.__proxies, auth=self.__auth)
# else:
# response: Request = requests.post(url_withaction, headers=self.__headers, data=dict_params,
# proxies=self.__proxies, auth=self.__auth,
# timeout=self.__timeout)
if self.__aceQLHttpApi.get_timeout() is None:
response: Request = requests.post(url_withaction, headers=self.__aceQLHttpApi.get_headers(), data=dict_params,
proxies=self.__aceQLHttpApi.get_proxies(),
auth=self.__aceQLHttpApi.get_auth())
else:
response: Request = requests.post(url_withaction, headers=self.__aceQLHttpApi.get_headers(), data=dict_params,
proxies=self.__aceQLHttpApi.get_proxies(),
auth=self.__aceQLHttpApi.get_auth(),
timeout=self.__aceQLHttpApi.get_timeout())
self.__aceQLHttpApi.set_http_status_code(response.status_code)
result = response.text
# print("self.__http_status_code: " + str(self.__http_status_code ))
# print("result : " + str(result))
AceQLDebug.debug("result: " + result)
result_analyzer = ResultAnalyzer(result, self.__aceQLHttpApi.get_http_status_code())
if not result_analyzer.is_status_ok():
raise Error(result_analyzer.get_error_message(),
result_analyzer.get_error_type(), None, None, self.__aceQLHttpApi.get_http_status_code())
update_counts_array_dto_schema = marshmallow_dataclass.class_schema(UpdateCountsArrayDto)
update_counts_array_dto_back: UpdateCountsArrayDto = update_counts_array_dto_schema().loads(
result)
update_counts_array: List[int] = update_counts_array_dto_back.updateCountsArray
return update_counts_array
except Exception as e:
if isinstance(e, Error):
raise
else:
raise Error(str(e), 0, e, None, self.__aceQLHttpApi.get_http_status_code())
def execute_server_query(self, server_query_executor_class_name: str,
parameters: list):
"""Calls /execute_server_query API"""
try:
action = "execute_server_query"
dict_params = {
"server_query_executor_class_name":
server_query_executor_class_name
}
AceQLDebug.debug("dictParams 1: " + str(dict_params))
server_query_executor_dto_schema = marshmallow_dataclass.class_schema(
ServerQueryExecutorDto)
server_query_executor_dto: ServerQueryExecutorDto = ServerQueryExecutorDtoBuilder.build(
server_query_executor_class_name, parameters)
json_string: str = server_query_executor_dto_schema().dumps(
server_query_executor_dto)
dict_params["server_query_executor_dto"] = json_string
url_withaction = self.__url + action
AceQLDebug.debug("url_withaction: " + url_withaction)
AceQLDebug.debug("parameters : " + str(parameters))
self.update_dict_params(dict_params)
AceQLDebug.debug("dictParams 2: " + str(dict_params))
# r = requests.post('http://httpbin.org/post', data = {'key':'value'})
if self.__aceQLHttpApi.get_timeout() is None:
AceQLDebug.debug("QUERY HERE 1")
response: Request = requests.post(
url_withaction,
headers=self.__aceQLHttpApi.get_headers(),
data=dict_params,
proxies=self.__aceQLHttpApi.get_proxies(),
auth=self.__aceQLHttpApi.get_auth())
else:
AceQLDebug.debug("QUERY HERE 2")
response: Request = requests.post(
url_withaction,
headers=self.__aceQLHttpApi.get_headers(),
data=dict_params,
proxies=self.__aceQLHttpApi.get_proxies(),
auth=self.__aceQLHttpApi.get_auth(),
timeout=self.__aceQLHttpApi.get_timeout())
AceQLDebug.debug("DONE!")
self.__aceQLHttpApi.set_http_status_code(response.status_code)
filename = FileUtil.build_result_set_file()
AceQLDebug.debug("filename1: " + filename)
# We dump the JSon stream into user.home/.kawansoft/tmp
with open(filename, 'wb') as fd:
for chunk in response.iter_content(chunk_size=2048):
fd.write(chunk)
AceQLDebug.debug("after open filename")
result_set_info = self.treat_result(filename)
return result_set_info
except Exception as e:
if isinstance(e, Error):
raise
else:
raise Error(str(e), 0, e, None,
self.__aceQLHttpApi.get_http_status_code())
def execute_query(self, sql: str, is_prepared_statement: bool,
statement_parameters: dict):
"""Calls /execute_query API"""
try:
action = "execute_query"
AceQLExecutionUtil.check_values(is_prepared_statement, sql)
dict_params = {"sql": sql}
AceQLExecutionUtil.set_is_prepared_statement(
dict_params, is_prepared_statement)
url_withaction = self.__url + action
AceQLDebug.debug("url_withaction: " + url_withaction)
AceQLDebug.debug("dictParams 1: " + str(dict_params))
if statement_parameters is not None:
if not isinstance(statement_parameters, dict):
raise TypeError("statementParameters is not a dictionary!")
dict_params.update(statement_parameters)
self.update_dict_params(dict_params)
AceQLDebug.debug("dictParams 2: " + str(dict_params))
# r = requests.post('http://httpbin.org/post', data = {'key':'value'})
if self.__aceQLHttpApi.get_timeout() is None:
AceQLDebug.debug("QUERY HERE 1")
response: Request = requests.post(
url_withaction,
headers=self.__aceQLHttpApi.get_headers(),
data=dict_params,
proxies=self.__aceQLHttpApi.get_proxies(),
auth=self.__aceQLHttpApi.get_auth())
else:
AceQLDebug.debug("QUERY HERE 2")
response: Request = requests.post(
url_withaction,
headers=self.__aceQLHttpApi.get_headers(),
data=dict_params,
proxies=self.__aceQLHttpApi.get_proxies(),
auth=self.__aceQLHttpApi.get_auth(),
timeout=self.__aceQLHttpApi.get_timeout())
AceQLDebug.debug("DONE!")
self.__aceQLHttpApi.set_http_status_code(response.status_code)
filename = FileUtil.build_result_set_file()
AceQLDebug.debug("filename1: " + filename)
# We dump the JSon stream into user.home/.kawansoft/tmp
with open(filename, 'wb') as fd:
for chunk in response.iter_content(chunk_size=2048):
fd.write(chunk)
AceQLDebug.debug("after open filename")
result_set_info = self.treat_result(filename)
return result_set_info
except Exception as e:
if isinstance(e, Error):
raise
else:
raise Error(str(e), 0, e, None,
self.__aceQLHttpApi.get_http_status_code())
