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Data.py
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Data.py
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'''
******************************************************************************************
Assembly: BudgetPy
Filename: Data.py
Author: Terry D. Eppler
Created: 05-31-2023
Last Modified By: Terry D. Eppler
Last Modified On: 06-01-2023
******************************************************************************************
<copyright file="Data.py" company="Terry D. Eppler">
This is a Federal Budget, Finance, and Accounting application.
Copyright © 2024 Terry Eppler
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the “Software”),
to deal in the Software without restriction,
including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software,
and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
You can contact me at: terryeppler@gmail.com or eppler.terry@epa.gov
</copyright>
<summary>
Data.py
</summary>
******************************************************************************************
'''
import sqlite3 as sqlite
from pandas import DataFrame
from pandas import read_sql as sqlreader
import pyodbc as db
import os
from Static import Source, Provider, SQL, ParamStyle
from Booger import Error, ErrorDialog
class Pascal( ):
'''
Constructor:
Pascal( input: str )
Purpose:
Class splits string 'input' argument into Pascal Casing
'''
def __init__( self, input: str=None ):
self.input = input
self.output = input if input.istitle( ) else self.join( )
def __str__( self ) -> str:
if self.output is not None:
return self.output
def __dir__( self ) -> list[ str ]:
'''
Retunes a list[ str ] of member names.
'''
return [ 'input', 'split', 'join' ]
def split( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
_buffer = [ str( c ) for c in self.output ]
_output = [ ]
_retval = ''
for char in _buffer:
if char.islower( ):
_output.append( char )
elif char.isupper( ) and _buffer.index( char ) == 0:
_output.append( char )
elif char.isupper( ) and _buffer.index( char ) > 0:
_output.append( ' ' )
_output.append( char )
for o in _output:
_retval += f'{o}'
return _retval
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'Pascal'
_exc.method = 'join( self )'
_err = ErrorDialog( _exc )
_err.show( )
def join( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
if self.input.count( ' ' ) > 0:
_buffer = [ str( c ) for c in self.input ]
_output = [ ]
_retval = ''
for char in _buffer:
if char != ' ':
_output.append( char )
elif char == ' ':
_index = _buffer.index( char )
_next = str( _buffer[ _index + 1 ] )
if _next.islower( ):
_cap = _next.upper( )
_buffer.remove( _next )
_buffer.insert( _index + 1, _cap )
_buffer.remove( char )
_output.append( _next.upper( ) )
for o in _output:
_retval += f'{o}'
return _retval.replace( 'AH', 'Ah' ).replace( 'BOC', 'Boc' ) \
.replace( 'RPIO', 'Rpio' ).replace( 'RC', 'Rc' ) \
.replace( 'PRC', 'Prc' ).replace( 'ID', 'Id' ) \
.replace( 'OMB', 'Omb' ).replace( 'NPM', 'Npm' ) \
.replace( 'FOC', 'Foc' ).replace( 'ORG', 'Org' ) \
.replace( 'THE', 'The' ).replace( 'OR', 'Or' ) \
.replace( 'AND', 'And' ).replace( 'BUT', 'But' ) \
.replace( 'OF', 'Of' )
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'Pascal'
_exc.method = 'join( self )'
_err = ErrorDialog( _exc )
_err.show( )
class SqlPath( ):
'''
Constructor:
SqlPath( )
Purpose:
Class providing relative_path paths to the
folders containing sqlstatement files and driverinfo
paths used in the application
'''
def __init__( self ):
self.sqlite_driver = 'sqlite3'
self.sqlite_path = r'db\sqlite\datamodels\sql'
self.access_driver = r'DRIVER={Microsoft ACCDB Driver (*.mdb, *.accdb)};DBQ='
self.access_path = r'db\access\datamodels\sql'
self.sqlserver_driver = r'DRIVER={ODBC Driver 17 for SQL Server};SERVER=.\SQLExpress;'
self.sqlserver_database = r'db\mssql\datamodels\sql'
def __dir__( self ) -> list[ str ]:
'''
Retunes a list[ str ] of member names.
'''
return [ 'sqlite_driver', 'sqlite_database',
'access_driver', 'access_database',
'sqlserver_driver', 'sqlserver_database' ]
class SqlFile( ):
'''
Constructor:
SqlFile( source: Source=None, provider: Provider = Provider.SQLite,
command: SQL=SQL.SELECTALL )
Purpose:
Class providing access to sqlstatement sub-folders in the application provided
optional arguments source, provider, and command.
'''
def __init__( self, source: Source=None, provider: Provider=Provider.SQLite,
commandtype: SQL = SQL.SELECTALL ):
self.command_type = commandtype
self.source = source
self.provider = provider
self.data = [ 'Actuals',
'AdjustedTrialBalances'
'AdministrativeRequests',
'Allocations',
'AmericanRescuePlanCarryoverEstimates',
'AnnualCarryoverEstimates',
'AnnualReimbursableEstimates',
'ApportionmentData',
'AppropriationAvailableBalances',
'AppropriationDocuments',
'AppropriationLevelAuthority',
'BudgetaryResourceExecution',
'BudgetAuthorityAndOutlays',
'BudgetDocuments',
'CarryoverApportionments',
'CarryoverRequests',
'Changes',
'CompassLevels',
'CongressionalProjects',
'Contacts',
'CombinedSchedules',
'Defactos',
'Deobligations',
'DocumentControlNumbers',
'Earmarks',
'Expenditures',
'HeadquartersAuthority',
'InflationReductionActCarryoverEstimates',
'JobsActCarryoverEstimates',
'LedgerAccounts',
'MainAccounts',
'MonthlyActuals',
'MonthlyLedgerAccountBalances',
'MonthlyOutlays',
'ObligationActivity',
'Obligations',
'OpenCommitments',
'OperatingPlans',
'Outlays',
'Partitions'
'PayrollAuthority',
'PayrollRequests',
'PRC',
'QueryDefinitions',
'RecoveryAct',
'RegionalAuthority',
'ReimbursableAgreements',
'ReimbursableFunds',
'Reports',
'Reprogrammings',
'StatusOfSuperfundSites',
'SpecialAccounts',
'SpendingDocuments',
'SpendingRates',
'StateGrantObligations',
'StatusOfAmericanRescuePlanFunds',
'StatusOfAppropriations',
'StatusOfBudgetaryResources',
'StatusOfEarmarks',
'StatusOfFunds',
'StatusOfInflationReductionActFunds',
'StatusOfJobsActFunds',
'StatusOfSupplementalFunds',
'StatusOfSuperfundSites',
'StatusOfSpecialAccountFunds',
'SupplementalCarryoverEstimates',
'TransferActivity',
'Transfers',
'UnliquidatedObligations',
'UnobligatedBalances',
'AccountingEvents',
'Accounts',
'ActivityCodes',
'AllowanceHolders',
'ApplicationTables',
'Appropriations',
'BudgetControls',
'BudgetObjectClasses',
'CapitalPlanningInvestmentCodes',
'ColumnSchema',
'CompassErrors',
'CongressionalControls',
'CostAreas',
'DataRuleDescriptions',
'Documents',
'EarmarkCodes',
'FederalHolidays',
'FinanceObjectClasses',
'FiscalYears',
'FundCategories',
'Funds',
'FundSymbols',
'Goals',
'GsPayScales',
'HeadquartersOffices',
'Images',
'Messages',
'MainAccounts',
'NationalPrograms',
'Objectives',
'Organizations',
'Partitions',
'PayPeriods',
'ProgramAreas',
'ProgramProjectDescriptions',
'ProgramProjects',
'Projects',
'Providers',
'PublicLaws',
'ReconciliationLines',
'ReferenceTables',
'RegionalOffices',
'ReportingLines',
'ResourcePlanningOffices',
'Resources',
'ResponsibilityCenters',
'SchemaTypes',
'StateOrganizations',
'SubAppropriations',
'TransTypes',
'TreasurySybmols',
'URL' ]
def __dir__( self ) -> list[ str ]:
'''
Retunes a list[ str ] of member names.
'''
return [ 'source', 'provider', 'command_type', 'get_file_path',
'get_folder_path', 'get_command_text' ]
def get_file_path( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
_sqlpath = SqlPath( )
_data = self.data
_provider = self.provider.name
_tablename = self.source.name
_command = self.command_type.name
_current = os.getcwd( )
_filepath = ''
if _provider == 'SQLite' and _tablename in _data:
_filepath = f'{_sqlpath.sqlite_database}\\{_command}\\{_tablename}.sql'
return os.path.join( _current, _filepath )
elif _provider == 'ACCDB' and _tablename in _data:
_filepath = f'{_sqlpath.access_database}\\{_command}\\{_tablename}.sql'
return os.path.join( _current, _filepath )
elif _provider == 'SqlServer' and _tablename in _data:
_filepath = f'{_sqlpath.sqlserver_database}\\{_command}\\{_tablename}.sql'
return os.path.join( _current, _filepath )
else:
_filepath = f'{_sqlpath.sqlite_database}\\{_command}\\{_tablename}.sql'
return os.path.join( _current, _filepath )
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'SqlFile'
_exc.method = 'get_file_path( self )'
_err = ErrorDialog( _exc )
_err.show( )
def get_folder_path( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
_sqlpath = SqlPath( )
_data = self.data
_source = self.source.name
_provider = self.provider.name
_command = self.command_type.name
_current = os.getcwd( )
_folder = ''
if _provider == 'SQLite' and _source in _data:
_folder = f'{_sqlpath.sqlite_database}\\{_command}'
return os.path.join( _current, _folder )
elif _provider == 'ACCDB' and _source in _data:
_folder = f'{_sqlpath.access_database}\\{_command}'
return os.path.join( _current, _folder )
elif _provider == 'SqlServer' and _source in _data:
_folder = f'{_sqlpath.sqlserver_database}\\{_command}'
return os.path.join( _current, _folder )
else:
_folder = f'{_sqlpath.sqlite_database}\\{_command}'
return os.path.join( _current, _folder )
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'SqlFile'
_exc.method = 'get_folder_path( self )'
_err = ErrorDialog( _exc )
_err.show( )
def get_command_text( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
_source = self.source.name
_paths = self.get_file_path( )
_folder = self.get_folder_path( )
_sql = ''
for name in os.listdir( _folder ):
if name.endswith( '.sql' ) and os.path.splitext( name )[ 0 ] == _source:
_path = os.path.join( _folder, name )
_query = open( _path )
_sql = _query.read( )
if _sql is None:
_msg = 'INVALID INPUT!'
raise ValueError( _msg )
else:
return _sql
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'SqlFile'
_exc.method = 'get_command_text( self, other )'
_err = ErrorDialog( _exc )
_err.show( )
class DbConfig( ):
'''
Constructor:
DbConfig( source: Source, provider: Provider=Provider.SQLite )
Purpose:
Class provides list of Budget Execution tables across two databases
'''
def __init__( self, src: Source, pro: Provider=Provider.SQLite ):
self.provider = pro
self.source = src
self.table_name = src.name
self.sqlite_path = os.getcwd( ) + r'\db\sqlite\datamodels\Data.db'
self.access_driver = r'DRIVER={ Microsoft Access Driver (*.mdb, *.accdb) };DBQ='
self.access_path = os.getcwd( ) + r'\db\access\datamodels\sql\Data.accdb'
self.sqlserver_driver = r'DRIVER={ ODBC Driver 17 for SQL Server };SERVER=.\SQLExpress;'
self.sqlserver_path = os.getcwd( ) + r'\db\mssql\datamodels\Data.mdf'
self.data = [ 'Actuals',
'AdjustedTrialBalances'
'AdministrativeRequests',
'Allocations',
'AmericanRescuePlanCarryoverEstimates',
'AnnualCarryoverEstimates',
'AnnualReimbursableEstimates',
'ApportionmentData',
'AppropriationAvailableBalances',
'AppropriationDocuments',
'AppropriationLevelAuthority',
'BudgetaryResourceExecution',
'BudgetAuthorityAndOutlays',
'BudgetDocuments',
'CarryoverApportionments',
'CarryoverRequests',
'Changes',
'CompassLevels',
'CongressionalProjects',
'Contacts',
'CombinedSchedules',
'Defactos',
'Deobligations',
'DocumentControlNumbers',
'Earmarks',
'Expenditures',
'HeadquartersAuthority',
'InflationReductionActCarryoverEstimates',
'JobsActCarryoverEstimates',
'LedgerAccounts',
'MainAccounts',
'MonthlyActuals',
'MonthlyLedgerAccountBalances',
'MonthlyOutlays',
'ObligationActivity',
'Obligations',
'OpenCommitments',
'OperatingPlans',
'Outlays',
'Partitions'
'PayrollAuthority',
'PayrollRequests',
'PRC',
'QueryDefinitions',
'RecoveryAct',
'RegionalAuthority',
'ReimbursableAgreements',
'ReimbursableFunds',
'Reports',
'Reprogrammings',
'StatusOfSuperfundSites',
'SpecialAccounts',
'SpendingDocuments',
'SpendingRates',
'StateGrantObligations',
'StatusOfAmericanRescuePlanFunds',
'StatusOfAppropriations',
'StatusOfBudgetaryResources',
'StatusOfEarmarks',
'StatusOfFunds',
'StatusOfInflationReductionActFunds',
'StatusOfJobsActFunds',
'StatusOfSupplementalFunds',
'StatusOfSuperfundSites',
'StatusOfSpecialAccountFunds',
'SupplementalCarryoverEstimates',
'TransferActivity',
'Transfers',
'UnliquidatedObligations',
'UnobligatedBalances',
'AccountingEvents',
'Accounts',
'ActivityCodes',
'AllowanceHolders',
'ApplicationTables',
'Appropriations',
'BudgetControls',
'BudgetObjectClasses',
'CapitalPlanningInvestmentCodes',
'ColumnSchema',
'CompassErrors',
'CongressionalControls',
'CostAreas',
'DataRuleDescriptions',
'Documents',
'EarmarkCodes',
'FederalHolidays',
'FinanceObjectClasses',
'FiscalYears',
'FundCategories',
'Funds',
'FundSymbols',
'Goals',
'GsPayScales',
'HeadquartersOffices',
'Images',
'Messages',
'MainAccounts',
'NationalPrograms',
'Objectives',
'Organizations',
'Partitions',
'PayPeriods',
'ProgramAreas',
'ProgramProjectDescriptions',
'ProgramProjects',
'Projects',
'Providers',
'PublicLaws',
'ReconciliationLines',
'ReferenceTables',
'RegionalOffices',
'ReportingLines',
'ResourcePlanningOffices',
'Resources',
'ResponsibilityCenters',
'SchemaTypes',
'StateOrganizations',
'SubAppropriations',
'TransTypes',
'TreasurySybmols',
'URL' ]
def __str__( self ) -> str:
if self.table_name is not None:
return self.table_name
def __dir__( self ) -> list[ str ]:
'''
Retunes a list[ str ] of member names.
'''
return [ 'source', 'provider', 'table_name', 'get_driver_info',
'sqlite_path', 'access_driver', 'access_path',
'sqlserver_driver', 'sqlserver_path',
'get_data_path', 'get_connection_string' ]
def get_driver_info( self ) -> str:
'''
Purpose:
Returns a string defining the driverinfo being used
Parameters: None
Returns: str
'''
try:
if self.provider.name == 'SQLite':
return self.sqlite_path
elif self.provider.name == 'Access':
return self.access_driver
elif self.provider.name == 'SqlServer':
return self.sqlserver_driver
else:
return self.sqlite_driver
except Exception as e:
_exc = Error( e )
_exc.cause = 'DbConfig Class'
_exc.method = 'getdriver_info( self )'
_error = ErrorDialog( _exc )
_error.show( )
def get_data_path( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
if self.provider.name == 'SQLite':
return self.sqlite_path
elif self.provider.name == 'Access':
return self.access_path
elif self.provider.name == 'SqlServer':
return self.sqlserver_path
else:
return self.sqlite_path
except Exception as e:
_exc = Error( e )
_exc.cause = 'DbConfig Class'
_exc.method = 'get_data_path( self )'
_error = ErrorDialog( _exc )
_error.show( )
def get_connection_string( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
_path = self.get_data_path( )
if self.provider.name == Provider.Access.name:
return self.get_driver_info( ) + _path
elif self.provider.name == Provider.SqlServer.name:
return r'DRIVER={ ODBC Driver 17 for SQL Server };Server=.\SQLExpress;' \
+ f'AttachDBFileName={_path}' \
+ f'DATABASE={_path}Trusted_Connection=yes;'
else:
return f'{_path} '
except Exception as e:
_exc = Error( e )
_exc.cause = 'DbConfig Class'
_exc.method = 'get_connection_string( self )'
_error = ErrorDialog( _exc )
_error.show( )
class Connection( DbConfig ):
'''
Constructor:
Connection( source: Source, provider: Provider=Provider.SQLite )
Purpose:
Class providing object used to connect to the databases
'''
def __init__( self, src: Source, pro: Provider=Provider.SQLite ):
super( ).__init__( src, pro )
self.source = super( ).source
self.provider = super( ).provider
self.data_path = super( ).get_data_path( )
self.driver = super( ).get_driver_info( )
self.dsn = super( ).table_name + ';'
self.connection_string = super( ).get_connection_string( )
def __dir__( self ) -> list[ str ]:
'''
Retunes a list[ str ] of member names.
'''
return [ 'source', 'provider', 'table_name', 'getdriver_info',
'get_data_path', 'get_connection_string',
'driver_info', 'data_path',
'connection_string', 'connect' ]
def connect( self ):
'''
Purpose:
Establishes a data connections using the connecdtion
string.
Parameters:
self
Returns:
None
'''
try:
if self.provider.name == Provider.Access.name:
return db.connect( self.connection_string )
elif self.provider.name == Provider.SqlServer.name:
return db.connect( self.connection_string )
else:
return sqlite.connect( self.connection_string )
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'Connection'
_exc.method = 'connect( self )'
_err = ErrorDialog( _exc )
_err.show( )
class SqlConfig( ):
'''
Constructor:
SqlConfig( commandtype: SQL=SQL.SELECTALL, columnnames: list = None,
columnvalues: tuple=None, paramstyle: ParamStyle = None )
Purpose:
Class provides database interaction behavior
'''
def __init__( self, cmd: SQL = SQL.SELECTALL, names: list[ str ]=None,
values: tuple=None, paramstyle: ParamStyle = None ):
self.command_type = cmd
self.column_names = names
self.column_values = values
self.parameter_style = paramstyle
self.criteria = dict( zip( names, list( values ) ) ) \
if names is not None and values is not None else None
def __dir__( self ) -> list[ str ]:
'''
Returns a list[ str ] of member names.
'''
return [ 'command_type', 'column_names', 'column_values',
'parameter_style', 'pair_dump', 'where_dump',
'set_dump', 'column_dump', 'value_dump' ]
def pair_dump( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
if self.column_names is not None and self.column_values is not None:
_pairs = ''
_kvp = zip( self.column_names, self.column_values )
for k, v in _kvp:
_pairs += f'{k} = \'{v}\' AND '
_criteria = _pairs.rstrip( ' AND ' )
if _criteria is None:
_msg = 'INVALID INPUT!'
raise ValueError( _msg )
else:
return _criteria
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'SqlConfig'
_exc.method = 'pair_dump( self )'
_err = ErrorDialog( _exc )
_err.show( )
def where_dump( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
if (isinstance( self.column_names, list ) and
isinstance( self.column_values, tuple )):
pairs = ''
for k, v in zip( self.column_names, self.column_values ):
pairs += f'{k} = \'{v}\' AND '
_criteria = 'WHERE ' + pairs.rstrip( ' AND ' )
if _criteria is None:
_msg = 'INVALID INPUT!'
raise ValueError( _msg )
else:
return _criteria
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'SqlConfig'
_exc.method = 'where_dump( self )'
_err = ErrorDialog( _exc )
_err.show( )
def set_dump( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
if self.column_names is not None and self.column_values is not None:
_pairs = ''
_criteria = ''
for k, v in zip( self.column_names, self.column_values ):
_pairs += f'{k} = \'{v}\', '
_criteria = 'SET ' + _pairs.rstrip( ', ' )
if _criteria is None:
_msg = 'INVALID INPUT!'
raise ValueError( _msg )
else:
return _criteria
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'SqlConfig'
_exc.method = 'set_dump( self )'
_err = ErrorDialog( _exc )
_err.show( )
def column_dump( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
if self.column_names is not None:
_colnames = ''
for n in self.column_names:
_colnames += f'{n}, '
_columns = '(' + _colnames.rstrip( ', ' ) + ')'
if _columsn is None:
_msg = 'INVALID INPUT!'
raise ValueError( _msg )
else:
return _columns
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'SqlConfig'
_exc.method = 'column_dump( self )'
_err = ErrorDialog( _exc )
_err.show( )
def value_dump( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
if self.column_values is not None:
_vals = ''
for v in self.column_values:
_vals += f'{v}, '
_values = 'VALUES (' + _vals.rstrip( ', ' ) + ')'
if _values is None:
_msg = 'INVALID INPUT!'
raise ValueError( _msg )
else:
return _values
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'SqlConfig'
_exc.method = 'value_dump( self )'
_err = ErrorDialog( _exc )
_err.show( )
class SqlStatement( ):
'''
Constructor:
SqlStatement( dbcfg: DbConfig, sqlcfg: SqlConfig )
Purpose:
Class represents the values models used in the SQLite database
'''
def __init__( self, dbcfg: DbConfig, sqcfg: SqlConfig ):
self.command_type = sqcfg.command_type
self.provider = dbcfg.provider
self.source = dbcfg.source
self.table_name = dbcfg.table_name
self.column_names = sqcfg.column_dump( )
self.column_values = sqcfg.value_dump( )
self.updates = sqcfg.set_dump( )
self.criteria = dict( zip( self.column_names, list( self.column_values ) ) ) \
if self.column_names is not None and self.column_values is not None else None
self.command_text = self.__getquerytext( )
def __str__( self ) -> str:
if self.command_text is not None:
return self.command_text
def __dir__( self ) -> list[ str ]:
'''
Returns a list[ str ] of member names.
'''
return [ 'provider', 'table_name',
'command_type', 'column_names', 'values',
'updates', 'command_text' ]
def __getquerytext( self ) -> str:
'''
Purpose:
Parameters:
Returns:
'''
try:
_table = self.table_name
_cols = self.column_names
_vals = self.column_values
_where = self.criteria
_cmd = self.command_type
_updates = self.updates
if _cmd == SQL.SELECTALL and _cols is None and _vals is None and _where is None:
return f'SELECT * FROM {_table}'
elif _cmd == SQL.SELECT and _cols is not None and _vals is None and _where is not None:
return f'SELECT ' + _cols + f'FROM {_table}' + f' {_where}'
elif _cmd == SQL.INSERT and len( _where.items( ) ) > 0:
return f'SELECT ' + _cols + f' FROM {_table}' + f' {_where}'
elif _cmd == SQL.INSERT and _cols is not None and _vals is not None:
return f'INSERT INTO {_table} ' + f'{_cols} ' + f'{_vals}'
elif _cmd == SQL.UPDATE and _cols is not None and _vals is None and _where is not None:
_set = self.updates
return f'UPDATE {_table} ' + f'{_set}' + f'{_vals}' + f'{_where}'
elif _cmd == SQL.DELETE and _cols is None and _vals is None and _where is not None:
return f'DELETE FROM {_table} ' + f'{_where}'
elif _cmd == SQL.SELECT and _cols is not None and _vals is None and _where is None:
cols = _cols.lstrip( '(' ).rstrip( ')' )
return f'SELECT {cols} FROM {_table}'
elif _cmd == SQL.SELECTALL and _cols is None and _vals is None and _where is not None:
return f'SELECT * FROM {_table}' + f'{_where}'
elif _cmd == SQL.DELETE and _cols is None and _vals is None and _where is not None:
return f'DELETE FROM {_table}' + f'{_where}'
except Exception as e:
_exc = Error( e )
_exc.module = 'Data'
_exc.cause = 'SqlStatement'
_exc.method = '__getquerytext( self )'
_err = ErrorDialog( _exc )
_err.show( )
class Query( ):
'''