def agregarNuevoTipo(self, tablaAMod, colAMod, nuevoTipo): typeChecker = TypeChecker() bandera = False tableToAlter = typeChecker.searchTable(SymbolTable().useDatabase, tablaAMod) tipoFinal = { '_tipoColumna': str(nuevoTipo._tipoColumna), '_paramOne': nuevoTipo._paramOne, '_paramTwo': nuevoTipo._paramTwo } for columna in tableToAlter.columns: if (columna._name == colAMod): bandera = True columna._dataType = tipoFinal break if not bandera: desc = f": Undefined column in alter type ()" ErrorController().add(26, 'Execution', desc, 0, 0) return bandera = False typeChecker.writeFile() pass
def agregarCheck(self, conditionColumn, tablaId): typeChecker = TypeChecker() bandera = False tableToAlter = typeChecker.searchTable(SymbolTable().useDatabase, tablaId) # L (L|D)* whatColumnIs = re.search('[a-zA-z]([a-zA-z]|[0-9])*', conditionColumn.alias) if whatColumnIs != None: whatColumnIs = whatColumnIs.group(0) for columna in tableToAlter.columns: if (columna._name == whatColumnIs): bandera = True columna._check = conditionColumn.alias break if not bandera: desc = f": Undefined column in alter check ()" ErrorController().add(26, 'Execution', desc, 0, 0) return bandera = False else: desc = f": column not given in check()" ErrorController().add(26, 'Execution', desc, 0, 0) return typeChecker.writeFile()
def agregarFk(self, listaCols, nombreTabla, listaTablasCols, tablaAAlter): typeChecker = TypeChecker() # the len of the cols must be de same if len(listaCols) != len(listaTablasCols): desc = f": cantidad of params in foreign() != " ErrorController().add(36, 'Execution', desc, 0, 0) return existForeingTable = typeChecker.searchTable(SymbolTable().useDatabase, nombreTabla) tableToAlter = typeChecker.searchTable(SymbolTable().useDatabase, tablaAAlter) # validate if the foreign table exists if existForeingTable == None: desc = f": Undefined table in foreign key ()" ErrorController().add(27, 'Execution', desc, 0, 0) return # validate if the columns exists in the foreign table for coli in listaTablasCols: if typeChecker.searchColumn(existForeingTable, coli) == None: desc = f": Undefined col in table in foreign key ()" ErrorController().add(26, 'Execution', desc, 0, 0) return bandera = False for x in range(0, len(listaCols)): for columna in tableToAlter.columns: if (columna._name == listaCols[x]): bandera = True columna._foreignKey = { '_refTable': nombreTabla, '_refColumn': listaTablasCols[x] } break if not bandera: desc = f": Undefined column in alter foreign key ()" ErrorController().add(26, 'Execution', desc, 0, 0) return bandera = False typeChecker.writeFile()
def existsPK(self, tableCreated): indicesPrimarios = 0 typeChecker = TypeChecker() tablaToExtract = typeChecker.searchTable(SymbolTable().useDatabase, tableCreated) for colExt in tablaToExtract._colums: if colExt._primaryKey == True: indicesPrimarios += 1 return indicesPrimarios
def addInherits(self, nameChildTable, nameParentTable): typeChecker = TypeChecker() tablaPadre = typeChecker.searchTable(SymbolTable().useDatabase, nameParentTable) tablaHija = typeChecker.searchTable(SymbolTable().useDatabase, nameChildTable) # La tabla de la que hereda no existe if tablaPadre == None: desc = f": parent table dont exists" ErrorController().add(27, 'Execution', desc, 0, 0) self._can_create_flag = False return for colPar in tablaPadre._colums: # Vamos a insertar en la hija validarCol = typeChecker.createColumnTable(tablaHija, colPar, 0, 0) # Si es una columna repetida entonces no puede crear la tabla if validarCol == None: self._can_create_flag = False return
def generateHiddenPK(self, nombreTabla): typeChecker = TypeChecker() tipoEscondido = { '_tipoColumna': 'HIDDEN', '_paramOne': None, '_paramTwo': None } columnaEscondida = Column('HIDDEN', tipoEscondido) columnaEscondida._primaryKey = True tableToInsert = typeChecker.searchTable(SymbolTable().useDatabase, nombreTabla) typeChecker.createColumnTable(tableToInsert, columnaEscondida, 0, 0) print('### SE HA GENERADO UNA LLAVE PRIMARIA ESCONDIDA')
def addPKToDB(self, tableCreated): indicesPrimarios = [] typeChecker = TypeChecker() tablaToExtract = typeChecker.searchTable(SymbolTable().useDatabase, tableCreated) for colExt in tablaToExtract._colums: if colExt._primaryKey == True: indicesPrimarios.append(colExt._number) if len(indicesPrimarios) == 0: pass else: DataController().alterAddPK(tableCreated, indicesPrimarios, 0, 0)
def agregarCol(self, columna, nombreTabla): typeChecker = TypeChecker() tipoFinal = { '_tipoColumna': str(columna._type_column._tipoColumna), '_paramOne': columna._type_column._paramOne, '_paramTwo': columna._type_column._paramTwo } columnaFinal = Column(columna._column_name, tipoFinal) tableToInsert = typeChecker.searchTable(SymbolTable().useDatabase, nombreTabla) validateCol = typeChecker.createColumnTable(tableToInsert, columnaFinal, 0, 0) # if return None an error ocurrio if validateCol == None: return
def addForeignKey(self, listaCols, nombreTabla, listaTablasCols): # the len of the cols must be de same if len(listaCols) != len(listaTablasCols): desc = f": cant of params in foreign() != " ErrorController().add(36, 'Execution', desc, 0, 0) self._can_create_flag = False return typeChecker = TypeChecker() existForeingTable = typeChecker.searchTable(SymbolTable().useDatabase, nombreTabla) # validate if the foreign table exists if existForeingTable == None: desc = f": Undefined table in foreign key ()" ErrorController().add(27, 'Execution', desc, 0, 0) self._can_create_flag = False return # validate if the columns exists in the foreign table for coli in listaTablasCols: if typeChecker.searchColumn(existForeingTable, coli) == None: desc = f": Undefined col in table in foreign key ()" ErrorController().add(26, 'Execution', desc, 0, 0) self._can_create_flag = False return bandera = False for x in range(0, len(listaCols)): for columna in self._column_list: if isinstance(columna, CreateCol): if (columna._column_name == listaCols[x]): if columna._properties != None: bandera = True columna._properties[0]['fk_references_to'] = { '_refTable': nombreTabla, '_refColumn': listaTablasCols[x] } break if not bandera: desc = f": Undefined column in foreign key ()" ErrorController().add(26, 'Execution', desc, 0, 0) self._can_create_flag = False return bandera = False
def eliminarColumna(self, nombreTabla, nombreColumna): typeChecker = TypeChecker() bandera = False tableToAlter = typeChecker.searchTable(SymbolTable().useDatabase, nombreTabla) for columna in tableToAlter.columns: if (columna._name == nombreColumna): bandera = True # typeChecker.deleteColumn(tableToAlter,columna,0,0) break if not bandera: desc = f": Undefined column in alter drop column ()" ErrorController().add(26, 'Execution', desc, 0, 0) return bandera = False pass
def agregarNotNull(self, tablaAMod, colAMod): typeChecker = TypeChecker() bandera = False tableToAlter = typeChecker.searchTable(SymbolTable().useDatabase, tablaAMod) for columna in tableToAlter.columns: if (columna._name == colAMod): bandera = True columna._notNull = True break if not bandera: desc = f": Undefined column in alter not null ()" ErrorController().add(26, 'Execution', desc, 0, 0) return bandera = False typeChecker.writeFile()
def process(self, instrucction): typeChecker = TypeChecker() bandera = False tableToAlter = typeChecker.searchTable(SymbolTable().useDatabase, instrucction) for columna in tableToAlter.columns: if (columna._name == self._oldName): bandera = True columna._name = self._newName break if not bandera: desc = f": Undefined column in rename column ()" ErrorController().add(26, 'Execution', desc, 0, 0) return bandera = False typeChecker.writeFile()
def process(self, instruction): typeChecker = TypeChecker() print('') print('VAMOS A MODIFICAR LA SIGUIENTE TABLA') print(self._tablaAModificar) existTable = typeChecker.searchTable(SymbolTable().useDatabase, self._tablaAModificar) # validate if the table to alter exists if existTable == None: desc = f": Undefined table in alter table" ErrorController().add(27, 'Execution', desc, 0, 0) return print('y estos son los cambios') # Cambio puede ser un add (column,check,constraint_unique,foreign_key) # un alter # un drop # un rename for cambio in self._listaCambios: cambio.process(self._tablaAModificar)