Class DatabaseWrapper

Declaration

Methods

• ▶ def check_constraints(self, table_names=None) override

  Check each table name in `table_names` for rows with invalid foreign

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  This method overrides django.db.backends.base.base.BaseDatabaseWrapper.check_constraints.

  key references. This method is intended to be used in conjunction with
  `disable_constraint_checking()` and `enable_constraint_checking()`, to
  determine if rows with invalid references were entered while constraint
  checks were off.

• ▶ def close(self) override @async_unsafe

  inherited doc Close the connection to the database.

  @async_unsafe
  def close(self)

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  This method overrides django.db.backends.base.base.BaseDatabaseWrapper.close.

• ▶ def create_cursor(self, name=None) override

  inherited doc Create a cursor. Assume that a connection is established.

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  This method overrides django.db.backends.base.base.BaseDatabaseWrapper.create_cursor.

• ▶ def disable_constraint_checking(self) override

  inherited doc Backends can implement as needed to temporarily disable foreign key constraint checking. Should return True if the constraints were disabled and will need to be reenabled.

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  This method overrides django.db.backends.base.base.BaseDatabaseWrapper.disable_constraint_checking.

• ▶ def enable_constraint_checking(self) override

  inherited doc Backends can implement as needed to re-enable foreign key constraint checking.

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  This method overrides django.db.backends.base.base.BaseDatabaseWrapper.enable_constraint_checking.

• ▶ def get_connection_params(self) override

  inherited doc Return a dict of parameters suitable for get_new_connection.

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  This method overrides django.db.backends.base.base.BaseDatabaseWrapper.get_connection_params.

• ▶ def get_new_connection(self, conn_params) override @async_unsafe

  inherited doc Open a connection to the database.

  @async_unsafe
  def get_new_connection(

  self,

  conn_params,

  )

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  This method overrides django.db.backends.base.base.BaseDatabaseWrapper.get_new_connection.

  Overrides

  This method is overriden in:

  • django.contrib.gis.db.backends.spatialite.base.DatabaseWrapper
• ▶ def init_connection_state(self) override

  inherited doc Initialize the database connection settings.

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  This method overrides django.db.backends.base.base.BaseDatabaseWrapper.init_connection_state.

• ▷ def is_in_memory_db(self)

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• ▶ def is_usable(self) override

  inherited doc Test if the database connection is usable.

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  This method overrides django.db.backends.base.base.BaseDatabaseWrapper.is_usable.

  This method may assume that self.connection is not None.
  
  Actual implementations should take care not to raise exceptions
  as that may prevent Django from recycling unusable connections.

Inherited methods

• Methods inherited from django.db.backends.base.base.BaseDatabaseWrapper:
  __init__, allow_thread_sharing, check_settings, chunked_cursor, clean_savepoints, close_if_unusable_or_obsolete, commit, connect, constraint_checks_disabled, copy, cursor, dec_thread_sharing, ensure_connection, ensure_timezone, execute_wrapper, get_autocommit, get_rollback, inc_thread_sharing, make_cursor, make_debug_cursor, on_commit, prepare_database, queries, queries_logged, rollback, run_and_clear_commit_hooks, savepoint, savepoint_commit, savepoint_rollback, schema_editor, set_autocommit, set_rollback, temporary_connection, timezone, timezone_name, validate_no_atomic_block, validate_no_broken_transaction, validate_thread_sharing, wrap_database_errors

Subclasses

• django.contrib.gis.db.backends.spatialite.base.DatabaseWrapper

Reexports

• Imported in django.contrib.gis.db.backends.spatialite.base as SQLiteDatabaseWrapper.

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