OOPDB

OOPDB - OOP wrapper for work with database. For now it's based on sqlite3 python lib.

Supported database features

• Data types
  • Integer (DataTypes.INTEGER) - simple type for storing integer numbers
  • Text (DataTypes.TEXT) - simple type for storing text/strings with a maximum length of 65'535 bytes
• Rows styling
  • Dictionary - result on fetch will be list of dictionaries with keys equals to column names that was used in query
  • Tuple - result on fetch will be list of tuples with value order equals to column names order that was used in query
• Expression
  • Equal - checks that value in table with given column name matches some given value
  • Greater than - checks that value in table with given column name bigger than some given value
  • Less than - checks that value in table with given column name less than some given value
  • Greater than or equal - checks that value in table with given column name bigger than some given value or equal
  • Less than or equal - checks that value in table with given column name less than some given value or equal
  • Not equal - checks that value in table with given column name doesn't match some given value
  • Like - checks that value in table with given column name matches some given pattern
  • Between - checks that value in table with given column name matches some given interval
  • In - checks that value in table with given column name consists in the given list of values
  • Or - boolean operation that concatenates some other two expressions
  • And - boolean operation that concatenates some other two expressions
  • Not - negates some expression
• Column configurations
  • Column config - base abstraction for describing column configuration using following information
    • Name
    • Nullability
    • Type - type from DataTypes
  • Primary key - abstraction based on column config abstraction using following additional information
    • Autoincrement
  • Foreign key - abstraction based on column config abstraction using following additional information
    • Reference table name
    • Reference column name
• Commands
  • Create table - creates table with the given name and list of column configurations
  • Select - select data from the given table and list of given column names in the table
    • Distinct - optional configuration for select command to retrieve unique values
  • Table names - get all table names that are exist in database
  • Column names - get all column names that are exist in the table with the given table name
  • Insert into - append row values to the table with the given name and list of column names
  • Select count - select row count from the table with the given name
    • Distinct - optional configuration for select count command to retrieve count of the unique column values
  • Inner join - merges two tables with the given table names and column names
  • Order by - sort result by the given lists of column names and orders for each column
  • Update - updates the table with the given name by the given lists of column names and new values for that columns
  • Where - adds some condition based on Expression abstraction to the database queries
  • Delete - deletes rows using conditions
  • Last row id - returns the latest row's id that was inserted to the given table