Class: ActiveRecord::ConnectionAdapters::SQLite3Adapter

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain: self, `AbstractAdapter`, `::ActiveSupport::DescendantsTracker`
Instance Chain: self, `SQLite3::DatabaseStatements`, `AbstractAdapter`, `Savepoints`, `::ActiveRecord::QueryCache`, `DatabaseLimits`, `Quoting`, `DatabaseStatements`, `SchemaStatements`, `::ActiveSupport::Callbacks`
Inherits:	ActiveRecord::ConnectionAdapters::AbstractAdapter `::Object` ActiveRecord::ConnectionAdapters::AbstractAdapter ActiveRecord::ConnectionAdapters::SQLite3Adapter
Defined in:	activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb

Overview

The SQLite3 adapter works with the sqlite3-ruby drivers (available as gem from rubygems.org/gems/sqlite3).

Options:

:database - Path to the database file.

Constant Summary

ADAPTER_NAME =
# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 58
```
"SQLite"
```
COLLATE_REGEX =
# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 485
```
/.*\"(\w)\".*collate\s\"(\w+)\".*/i.freeze
```

NATIVE_DATABASE_TYPES =
# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 64

{
  primary_key:  "integer PRIMARY KEY AUTOINCREMENT NOT NULL",
  string:       { name: "varchar" },
  text:         { name: "text" },
  integer:      { name: "integer" },
  float:        { name: "float" },
  decimal:      { name: "decimal" },
  datetime:     { name: "datetime" },
  time:         { name: "time" },
  date:         { name: "date" },
  binary:       { name: "blob" },
  boolean:      { name: "boolean" },
  json:         { name: "json" },
}

`::ActiveSupport::Callbacks` - Included

CALLBACK_FILTER_TYPES

`DatabaseStatements` - Included

DEFAULT_INSERT_VALUE

`Quoting` - Included

COLUMN_NAME, COLUMN_NAME_WITH_ORDER

`AbstractAdapter` - Inherited

ADAPTER_NAME, COMMENT_REGEX, SIMPLE_INT

Class Attribute Summary

`AbstractAdapter` - Inherited

.__callbacks, .__callbacks?

Class Method Summary

.database_exists?(config) ⇒ Boolean
.new(connection, logger, connection_options, config) ⇒ SQLite3Adapter constructor

`AbstractAdapter` - Inherited

.database_exists?	Does the database for this adapter exist?
.type_cast_config_to_boolean, .type_cast_config_to_integer

`::ActiveSupport::DescendantsTracker` - Inherited

clear, descendants, direct_descendants,
store_inherited	This is the only method that is not thread safe, but is only ever called during the eager loading phase.
subclasses	Alias for ActiveSupport::DescendantsTracker.direct_descendants.

Instance Attribute Summary

#active? ⇒ Boolean readonly
#requires_reloading? ⇒ Boolean readonly
#supports_check_constraints? ⇒ Boolean readonly
#supports_common_table_expressions? ⇒ Boolean readonly
#supports_datetime_with_precision? ⇒ Boolean readonly
#supports_ddl_transactions? ⇒ Boolean readonly
#supports_explain? ⇒ Boolean readonly
#supports_expression_index? ⇒ Boolean readonly
#supports_foreign_keys? ⇒ Boolean readonly
#supports_index_sort_order? ⇒ Boolean readonly
#supports_insert_conflict_target? readonly

Alias for #supports_insert_on_conflict?.
#supports_insert_on_conflict? ⇒ Boolean (also: #supports_insert_on_duplicate_skip?, #supports_insert_on_duplicate_update?, #supports_insert_conflict_target?) readonly
#supports_insert_on_duplicate_skip? readonly

Alias for #supports_insert_on_conflict?.
#supports_insert_on_duplicate_update? readonly

Alias for #supports_insert_on_conflict?.
#supports_json? ⇒ Boolean readonly
#supports_lazy_transactions? ⇒ Boolean readonly
#supports_partial_index? ⇒ Boolean readonly
#supports_savepoints? ⇒ Boolean readonly
#supports_transaction_isolation? ⇒ Boolean readonly
#supports_views? ⇒ Boolean readonly

`AbstractAdapter` - Inherited

#__callbacks, #__callbacks?,
#active?	Checks whether the connection to the database is still active.
#in_use?	Alias for AbstractAdapter#owner.
#lock, #logger, #owner, #pool,
#prepared_statements	Alias for AbstractAdapter#prepared_statements?.
#preventing_writes?	Determines whether writes are currently being prevented.
#replica?,
#requires_reloading?	Returns true if its required to reload the connection between requests for development mode.
#schema_cache, #schema_cache=,
#supports_advisory_locks?	Does this adapter support application-enforced advisory locking?
#supports_bulk_alter?,
#supports_check_constraints?	Does this adapter support creating check constraints?
#supports_comments?	Does this adapter support metadata comments on database objects (tables, columns, indexes)?
#supports_comments_in_create?	Can comments for tables, columns, and indexes be specified in create/alter table statements?
#supports_common_table_expressions?,
#supports_datetime_with_precision?	Does this adapter support datetime with precision?
#supports_ddl_transactions?	Does this adapter support DDL rollbacks in transactions? That is, would CREATE TABLE or ALTER TABLE get rolled back by a transaction?
#supports_explain?	Does this adapter support explain?
#supports_expression_index?	Does this adapter support expression indices?
#supports_extensions?	Does this adapter support database extensions?
#supports_foreign_keys?	Does this adapter support creating foreign key constraints?
#supports_foreign_tables?	Does this adapter support foreign/external tables?
#supports_index_sort_order?	Does this adapter support index sort order?
#supports_indexes_in_create?	Does this adapter support creating indexes in the same statement as creating the table?
#supports_insert_conflict_target?, #supports_insert_on_duplicate_skip?, #supports_insert_on_duplicate_update?, #supports_insert_returning?,
#supports_json?	Does this adapter support json data type?
#supports_lazy_transactions?,
#supports_materialized_views?	Does this adapter support materialized views?
#supports_optimizer_hints?	Does this adapter support optimizer hints?
#supports_partial_index?	Does this adapter support partial indices?
#supports_partitioned_indexes?,
#supports_savepoints?	Does this adapter support savepoints?
#supports_transaction_isolation?	Does this adapter support setting the isolation level for a transaction?
#supports_validate_constraints?	Does this adapter support creating invalid constraints?
#supports_views?	Does this adapter support views?
#supports_virtual_columns?	Does this adapter support virtual columns?
#use_metadata_table?, #visitor

`DatabaseStatements` - Included

#begin_transaction, #commit_transaction, #current_transaction, #materialize_transactions, #open_transactions, #rollback_transaction, #transaction_open?, #within_new_transaction

Instance Method Summary

#add_belongs_to(table_name, ref_name, **options)

Alias for #add_reference.
#disconnect!

Disconnects from the database if already connected.
#encoding

Returns the current database encoding format as a string, eg: ‘UTF-8’.
#foreign_keys(table_name)
#reconnect!
#rename_table(table_name, new_name)

Renames a table.

`SQLite3::DatabaseStatements` - Included

#begin_isolated_db_transaction	`:nodoc`.
#exec_delete, #exec_query,
#exec_update	Alias for SQLite3::DatabaseStatements#exec_delete.
#explain

`AbstractAdapter` - Inherited

#adapter_name	Returns the human-readable name of the adapter.
#clear_cache!	Clear any caching the database adapter may be doing.
#close	Check the connection back in to the connection pool.
#disable_extension	This is meant to be implemented by the adapters that support extensions.
#disable_referential_integrity	Override to turn off referential integrity while executing `&block`.
#discard!	Immediately forget this connection ever existed.
#disconnect!	Disconnects from the database if already connected.
#enable_extension	This is meant to be implemented by the adapters that support extensions.
#expire	this method must only be called while holding connection pool’s mutex.
#extensions	A list of extensions, to be filled in by adapters that support them.
#index_algorithms	A list of index algorithms, to be filled by adapters that support them.
#lease	this method must only be called while holding connection pool’s mutex.
#prefetch_primary_key?	Should primary key values be selected from their corresponding sequence before the insert statement? If true, next_sequence_value is called before each insert to set the record’s primary key.
#prepared_statements?,
#raw_connection	Provides access to the underlying database driver for this adapter.
#reconnect!	Disconnects from the database if already connected, and establishes a new connection with the database.
#reset!	Reset the state of this connection, directing the DBMS to clear transactions and other connection-related server-side state.
#throw_away!	Removes the connection from the pool and disconnect it.
#unprepared_statement,
#verify!	Checks whether the connection to the database is still active (i.e. not stale).
#log

`Savepoints` - Included

#create_savepoint, #current_savepoint_name, #exec_rollback_to_savepoint, #release_savepoint

`DatabaseLimits` - Included

#allowed_index_name_length	Returns the maximum allowed length for an index name.
#in_clause_length	Returns the maximum number of elements in an IN (x,y,z) clause.
#index_name_length	Returns the maximum length of an index name.
#table_alias_length	Returns the maximum length of a table alias.

`Quoting` - Included

#quote	Quotes the column value to help prevent SQL injection attacks.
#quote_column_name	Quotes the column name.
#quote_string	Quotes a string, escaping any ‘ (single quote) and \ (backslash) characters.
#quote_table_name	Quotes the table name.
#quote_table_name_for_assignment	Override to return the quoted table name for assignment.
#quoted_date	Quote date/time values for use in SQL input.
#quoted_false, #quoted_true,
#type_cast	Cast a `value` to a type that the database understands.
#unquoted_false, #unquoted_true

`DatabaseStatements` - Included

#add_transaction_record	Register a record with the current transaction so that its after_commit and after_rollback callbacks can be called.
#begin_db_transaction	Begins the transaction (and turns off auto-committing).
#begin_isolated_db_transaction	Begins the transaction with the isolation level set.
#commit_db_transaction	Commits the transaction (and turns on auto-committing).
#create	Alias for DatabaseStatements#insert.
#default_sequence_name,
#delete	Executes the delete statement and returns the number of rows affected.
#disable_lazy_transactions!, #empty_insert_statement_value, #enable_lazy_transactions!,
#exec_delete	Executes delete `sql` statement in the context of this connection using `binds` as the bind substitutes.
#exec_insert	Executes insert `sql` statement in the context of this connection using `binds` as the bind substitutes.
#exec_query	Executes `sql` statement in the context of this connection using `binds` as the bind substitutes.
#exec_update	Executes update `sql` statement in the context of this connection using `binds` as the bind substitutes.
#execute	Executes the SQL statement in the context of this connection and returns the raw result from the connection adapter.
#initialize,
#insert	Executes an INSERT query and returns the new record’s ID.
#insert_fixture	Inserts the given fixture into the table.
#insert_fixtures_set,
#reset_sequence!	Set the sequence to the max value of the table’s column.
#rollback_db_transaction	Rolls back the transaction (and turns on auto-committing).
#rollback_to_savepoint,
#sanitize_limit	Sanitizes the given LIMIT parameter in order to prevent SQL injection.
#select_all	Returns an `::ActiveRecord::Result` instance.
#select_one	Returns a record hash with the column names as keys and column values as values.
#select_rows	Returns an array of arrays containing the field values.
#select_value	Returns a single value from a record.
#select_values	Returns an array of the values of the first column in a select:
#to_sql	Converts an arel AST to SQL.
#transaction	Runs the given block in a database transaction, and returns the result of the block.
#transaction_isolation_levels,
#truncate	Executes the truncate statement.
#update	Executes the update statement and returns the number of rows affected.
#write_query?	Determines whether the SQL statement is a write query.

`SchemaStatements` - Included

#add_belongs_to	Alias for SchemaStatements#add_reference.
#add_check_constraint	Adds a new check constraint to the table.
#add_column	Add a new `type` column named `column_name` to `table_name`.
#add_foreign_key	Adds a new foreign key.
#add_index	Adds a new index to the table.
#add_reference	Adds a reference.
#add_timestamps	Adds timestamps (`created_at` and `updated_at`) columns to `table_name`.
#assume_migrated_upto_version,
#change_column	Changes the column’s definition according to the new options.
#change_column_comment	Changes the comment for a column or removes it if `nil`.
#change_column_default	Sets a new default value for a column:
#change_column_null	Sets or removes a `NOT NULL` constraint on a column.
#change_table	A block for changing columns in `table`.
#change_table_comment	Changes the comment for a table or removes it if `nil`.
#check_constraints	Returns an array of check constraints for the given table.
#column_exists?	Checks to see if a column exists in a given table.
#columns	Returns an array of `Column` objects for the table specified by `table_name`.
#create_join_table	Creates a new join table with the name created using the lexical order of the first two arguments.
#create_table	Creates a new table with the name `table_name`.
#data_source_exists?	Checks to see if the data source `name` exists on the database.
#data_sources	Returns the relation names useable to back Active Record models.
#drop_join_table	Drops the join table specified by the given arguments.
#drop_table	Drops a table from the database.
#foreign_key_exists?	Checks to see if a foreign key exists on a table for a given foreign key definition.
#foreign_keys	Returns an array of foreign keys for the given table.
#index_exists?	Checks to see if an index exists on a table for a given index definition.
#index_name_exists?	Verifies the existence of an index with a given name.
#indexes	Returns an array of indexes for the given table.
#native_database_types	Returns a hash of mappings from the abstract data types to the native database types.
#options_include_default?,
#primary_key	Returns just a table’s primary key.
#remove_belongs_to	Alias for SchemaStatements#remove_reference.
#remove_check_constraint	Removes the given check constraint from the table.
#remove_column	Removes the column from the table definition.
#remove_columns	Removes the given columns from the table definition.
#remove_foreign_key	Removes the given foreign key from the table.
#remove_index	Removes the given index from the table.
#remove_reference	Removes the reference(s).
#remove_timestamps	Removes the timestamp columns (`created_at` and `updated_at`) from the table definition.
#rename_column	Renames a column.
#rename_index	Renames an index.
#rename_table	Renames a table.
#table_alias_for	Truncates a table alias according to the limits of the current adapter.
#table_comment	Returns the table comment that’s stored in database metadata.
#table_exists?	Checks to see if the table `table_name` exists on the database.
#table_options,
#tables	Returns an array of table names defined in the database.
#view_exists?	Checks to see if the view `view_name` exists on the database.
#views	Returns an array of view names defined in the database.

`::ActiveSupport::Callbacks` - Included

#run_callbacks

Runs the callbacks for the given event.

Constructor Details

.new(connection, logger, connection_options, config) ⇒ `SQLite3Adapter`

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 86


def initialize(connection, logger, connection_options, config)
  super(connection, logger, config)
  configure_connection
end

Class Method Details

.database_exists?(config) ⇒ `Boolean`

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 91


def self.database_exists?(config)
  config = config.symbolize_keys
  if config[:database] == ":memory:"
    true
  else
    database_file = defined?(Rails.root) ? File.expand_path(config[:database], Rails.root) : config[:database]
    File.exist?(database_file)
  end
end

Instance Attribute Details

#active? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 156


def active?
  !@connection.closed?
end

#requires_reloading? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 121


def requires_reloading?
  true
end

#supports_check_constraints? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 129


def supports_check_constraints?
  true
end

#supports_common_table_expressions? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 145


def supports_common_table_expressions?
  database_version >= "3.8.3"
end

#supports_datetime_with_precision? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 137


def supports_datetime_with_precision?
  true
end

#supports_ddl_transactions? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 101


def supports_ddl_transactions?
  true
end

#supports_explain? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 185


def supports_explain?
  true
end

#supports_expression_index? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 117


def supports_expression_index?
  database_version >= "3.9.0"
end

#supports_foreign_keys? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 125


def supports_foreign_keys?
  true
end

#supports_index_sort_order? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 172


def supports_index_sort_order?
  true
end

#supports_insert_conflict_target? (readonly)

Alias for #supports_insert_on_conflict?.

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 154


alias supports_insert_conflict_target? supports_insert_on_conflict?

#supports_insert_on_conflict? ⇒ `Boolean` (readonly) Also known as: #supports_insert_on_duplicate_skip?, #supports_insert_on_duplicate_update?, #supports_insert_conflict_target?

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 149


def supports_insert_on_conflict?
  database_version >= "3.24.0"
end

#supports_insert_on_duplicate_skip? (readonly)

Alias for #supports_insert_on_conflict?.

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 152


alias supports_insert_on_duplicate_skip? supports_insert_on_conflict?

#supports_insert_on_duplicate_update? (readonly)

Alias for #supports_insert_on_conflict?.

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 153


alias supports_insert_on_duplicate_update? supports_insert_on_conflict?

#supports_json? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 141


def supports_json?
  true
end

#supports_lazy_transactions? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 189


def supports_lazy_transactions?
  true
end

#supports_partial_index? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 113


def supports_partial_index?
  true
end

#supports_savepoints? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 105


def supports_savepoints?
  true
end

#supports_transaction_isolation? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 109


def supports_transaction_isolation?
  true
end

#supports_views? ⇒ `Boolean` (readonly)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 133


def supports_views?
  true
end

Instance Method Details

#add_belongs_to(table_name, ref_name, **options)

Alias for #add_reference.

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 289


alias :add_belongs_to :add_reference

#disconnect!

Disconnects from the database if already connected. Otherwise, this method does nothing.

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 167


def disconnect!
  super
  @connection.close rescue nil
end

#encoding

Returns the current database encoding format as a string, eg: ‘UTF-8’

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 181


def encoding
  @connection.encoding.to_s
end

#foreign_keys(table_name)

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 291


def foreign_keys(table_name)
  fk_info = exec_query("PRAGMA foreign_key_list(#{quote(table_name)})", "SCHEMA")
  fk_info.map do |row|
    options = {
      column: row["from"],
      primary_key: row["to"],
      on_delete: extract_foreign_key_action(row["on_delete"]),
      on_update: extract_foreign_key_action(row["on_update"])
    }
    ForeignKeyDefinition.new(table_name, row["table"], options)
  end
end

#reconnect!

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 160


def reconnect!
  super
  connect if @connection.closed?
end

#rename_table(table_name, new_name)

Renames a table.

Example:

rename_table('octopuses', 'octopi')

[ GitHub ]

# File 'activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb', line 228


def rename_table(table_name, new_name)
  schema_cache.clear_data_source_cache!(table_name.to_s)
  schema_cache.clear_data_source_cache!(new_name.to_s)
  exec_query "ALTER TABLE #{quote_table_name(table_name)} RENAME TO #{quote_table_name(new_name)}"
  rename_table_indexes(table_name, new_name)
end

Class: ActiveRecord::ConnectionAdapters::SQLite3Adapter

Overview

Constant Summary

::ActiveSupport::Callbacks - Included

DatabaseStatements - Included

Quoting - Included

AbstractAdapter - Inherited

Class Attribute Summary

AbstractAdapter - Inherited

Class Method Summary

AbstractAdapter - Inherited

::ActiveSupport::DescendantsTracker - Inherited

Instance Attribute Summary

AbstractAdapter - Inherited

DatabaseStatements - Included

Instance Method Summary

SQLite3::DatabaseStatements - Included

AbstractAdapter - Inherited

Savepoints - Included

DatabaseLimits - Included

Quoting - Included

DatabaseStatements - Included

SchemaStatements - Included

::ActiveSupport::Callbacks - Included

Constructor Details

.new(connection, logger, connection_options, config) ⇒ SQLite3Adapter

Class Method Details

.database_exists?(config) ⇒ Boolean

Instance Attribute Details

#active? ⇒ Boolean (readonly)

#requires_reloading? ⇒ Boolean (readonly)

#supports_check_constraints? ⇒ Boolean (readonly)

#supports_common_table_expressions? ⇒ Boolean (readonly)

#supports_datetime_with_precision? ⇒ Boolean (readonly)

#supports_ddl_transactions? ⇒ Boolean (readonly)

#supports_explain? ⇒ Boolean (readonly)

#supports_expression_index? ⇒ Boolean (readonly)

#supports_foreign_keys? ⇒ Boolean (readonly)

#supports_index_sort_order? ⇒ Boolean (readonly)

#supports_insert_conflict_target? (readonly)

#supports_insert_on_conflict? ⇒ Boolean (readonly) Also known as: #supports_insert_on_duplicate_skip?, #supports_insert_on_duplicate_update?, #supports_insert_conflict_target?

#supports_insert_on_duplicate_skip? (readonly)

#supports_insert_on_duplicate_update? (readonly)

#supports_json? ⇒ Boolean (readonly)

#supports_lazy_transactions? ⇒ Boolean (readonly)

#supports_partial_index? ⇒ Boolean (readonly)

#supports_savepoints? ⇒ Boolean (readonly)

#supports_transaction_isolation? ⇒ Boolean (readonly)

#supports_views? ⇒ Boolean (readonly)

Instance Method Details

#add_belongs_to(table_name, ref_name, **options)

#disconnect!

#encoding

#foreign_keys(table_name)

#reconnect!

#rename_table(table_name, new_name)

`::ActiveSupport::Callbacks` - Included

`DatabaseStatements` - Included

`Quoting` - Included

`AbstractAdapter` - Inherited

`AbstractAdapter` - Inherited

`AbstractAdapter` - Inherited

`::ActiveSupport::DescendantsTracker` - Inherited

`AbstractAdapter` - Inherited

`DatabaseStatements` - Included

`SQLite3::DatabaseStatements` - Included

`AbstractAdapter` - Inherited

`Savepoints` - Included

`DatabaseLimits` - Included

`Quoting` - Included

`DatabaseStatements` - Included

`SchemaStatements` - Included

`::ActiveSupport::Callbacks` - Included

.new(connection, logger, connection_options, config) ⇒ `SQLite3Adapter`

.database_exists?(config) ⇒ `Boolean`

#active? ⇒ `Boolean` (readonly)

#requires_reloading? ⇒ `Boolean` (readonly)

#supports_check_constraints? ⇒ `Boolean` (readonly)

#supports_common_table_expressions? ⇒ `Boolean` (readonly)

#supports_datetime_with_precision? ⇒ `Boolean` (readonly)

#supports_ddl_transactions? ⇒ `Boolean` (readonly)

#supports_explain? ⇒ `Boolean` (readonly)

#supports_expression_index? ⇒ `Boolean` (readonly)

#supports_foreign_keys? ⇒ `Boolean` (readonly)

#supports_index_sort_order? ⇒ `Boolean` (readonly)

#supports_insert_on_conflict? ⇒ `Boolean` (readonly) Also known as: #supports_insert_on_duplicate_skip?, #supports_insert_on_duplicate_update?, #supports_insert_conflict_target?

#supports_json? ⇒ `Boolean` (readonly)

#supports_lazy_transactions? ⇒ `Boolean` (readonly)

#supports_partial_index? ⇒ `Boolean` (readonly)

#supports_savepoints? ⇒ `Boolean` (readonly)

#supports_transaction_isolation? ⇒ `Boolean` (readonly)

#supports_views? ⇒ `Boolean` (readonly)