Module: ActiveRecord::ConnectionAdapters::DatabaseStatements
- Included in:
- AbstractAdapter
- Defined in:
- lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb
Instance Attribute Summary collapse
-
#transaction_manager ⇒ Object
readonly
:nodoc:.
Instance Method Summary collapse
-
#add_transaction_record(record, ensure_finalize = true) ⇒ Object
Register a record with the current transaction so that its after_commit and after_rollback callbacks can be called.
-
#begin_db_transaction ⇒ Object
Begins the transaction (and turns off auto-committing).
-
#begin_isolated_db_transaction(isolation) ⇒ Object
Begins the transaction with the isolation level set.
-
#cacheable_query(klass, arel) ⇒ Object
This is used in the StatementCache object.
-
#commit_db_transaction ⇒ Object
Commits the transaction (and turns on auto-committing).
- #default_sequence_name(table, column) ⇒ Object
-
#delete(arel, name = nil, binds = []) ⇒ Object
Executes the delete statement and returns the number of rows affected.
- #empty_insert_statement_value(primary_key = nil) ⇒ Object
-
#exec_delete(sql, name = nil, binds = []) ⇒ Object
Executes delete
sql
statement in the context of this connection usingbinds
as the bind substitutes. -
#exec_insert(sql, name = nil, binds = [], pk = nil, sequence_name = nil) ⇒ Object
Executes insert
sql
statement in the context of this connection usingbinds
as the bind substitutes. -
#exec_insert_all(sql, name) ⇒ Object
:nodoc:.
-
#exec_query(sql, name = "SQL", binds = [], prepare: false) ⇒ Object
Executes
sql
statement in the context of this connection usingbinds
as the bind substitutes. -
#exec_rollback_db_transaction ⇒ Object
:nodoc:.
-
#exec_update(sql, name = nil, binds = []) ⇒ Object
Executes update
sql
statement in the context of this connection usingbinds
as the bind substitutes. -
#execute(sql, name = nil) ⇒ Object
Executes the SQL statement in the context of this connection and returns the raw result from the connection adapter.
-
#explain(arel, binds = []) ⇒ Object
:nodoc:.
-
#high_precision_current_timestamp ⇒ Object
Returns an Arel SQL literal for the CURRENT_TIMESTAMP for usage with arbitrary precision date/time columns.
- #initialize ⇒ Object
-
#insert(arel, name = nil, pk = nil, id_value = nil, sequence_name = nil, binds = []) ⇒ Object
(also: #create)
Executes an INSERT query and returns the new record’s ID.
-
#insert_fixture(fixture, table_name) ⇒ Object
Inserts the given fixture into the table.
- #insert_fixtures_set(fixture_set, tables_to_delete = []) ⇒ Object
-
#mark_transaction_written_if_write(sql) ⇒ Object
:nodoc:.
-
#query(sql, name = nil) ⇒ Object
:nodoc:.
-
#query_value(sql, name = nil) ⇒ Object
:nodoc:.
-
#query_values(sql, name = nil) ⇒ Object
:nodoc:.
-
#reset_sequence!(table, column, sequence = nil) ⇒ Object
Set the sequence to the max value of the table’s column.
-
#reset_transaction ⇒ Object
:nodoc:.
-
#rollback_db_transaction ⇒ Object
Rolls back the transaction (and turns on auto-committing).
- #rollback_to_savepoint(name = nil) ⇒ Object
-
#sanitize_limit(limit) ⇒ Object
Sanitizes the given LIMIT parameter in order to prevent SQL injection.
-
#select_all(arel, name = nil, binds = [], preparable: nil, async: false) ⇒ Object
Returns an ActiveRecord::Result instance.
-
#select_one(arel, name = nil, binds = []) ⇒ Object
Returns a record hash with the column names as keys and column values as values.
-
#select_rows(arel, name = nil, binds = []) ⇒ Object
Returns an array of arrays containing the field values.
-
#select_value(arel, name = nil, binds = []) ⇒ Object
Returns a single value from a record.
-
#select_values(arel, name = nil, binds = []) ⇒ Object
Returns an array of the values of the first column in a select: select_values(“SELECT id FROM companies LIMIT 3”) => [1,2,3].
-
#to_sql(arel_or_sql_string, binds = []) ⇒ Object
Converts an arel AST to SQL.
-
#transaction(requires_new: nil, isolation: nil, joinable: true, &block) ⇒ Object
Runs the given block in a database transaction, and returns the result of the block.
- #transaction_isolation_levels ⇒ Object
- #transaction_open? ⇒ Boolean
-
#truncate(table_name, name = nil) ⇒ Object
Executes the truncate statement.
-
#truncate_tables(*table_names) ⇒ Object
:nodoc:.
-
#update(arel, name = nil, binds = []) ⇒ Object
Executes the update statement and returns the number of rows affected.
-
#with_yaml_fallback(value) ⇒ Object
Fixture value is quoted by Arel, however scalar values are not quotable.
-
#write_query?(sql) ⇒ Boolean
Determines whether the SQL statement is a write query.
Instance Attribute Details
#transaction_manager ⇒ Object (readonly)
:nodoc:
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 322 def transaction_manager @transaction_manager end |
Instance Method Details
#add_transaction_record(record, ensure_finalize = true) ⇒ Object
Register a record with the current transaction so that its after_commit and after_rollback callbacks can be called.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 345 def add_transaction_record(record, ensure_finalize = true) current_transaction.add_record(record, ensure_finalize) end |
#begin_db_transaction ⇒ Object
Begins the transaction (and turns off auto-committing).
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 350 def begin_db_transaction() end |
#begin_isolated_db_transaction(isolation) ⇒ Object
Begins the transaction with the isolation level set. Raises an error by default; adapters that support setting the isolation level should implement this method.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 364 def begin_isolated_db_transaction(isolation) raise ActiveRecord::TransactionIsolationError, "adapter does not support setting transaction isolation" end |
#cacheable_query(klass, arel) ⇒ Object
This is used in the StatementCache object. It returns an object that can be used to query the database repeatedly.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 49 def cacheable_query(klass, arel) # :nodoc: if prepared_statements sql, binds = visitor.compile(arel.ast, collector) query = klass.query(sql) else collector = klass.partial_query_collector parts, binds = visitor.compile(arel.ast, collector) query = klass.partial_query(parts) end [query, binds] end |
#commit_db_transaction ⇒ Object
Commits the transaction (and turns on auto-committing).
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 369 def commit_db_transaction() end |
#default_sequence_name(table, column) ⇒ Object
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 383 def default_sequence_name(table, column) nil end |
#delete(arel, name = nil, binds = []) ⇒ Object
Executes the delete statement and returns the number of rows affected.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 179 def delete(arel, name = nil, binds = []) sql, binds = to_sql_and_binds(arel, binds) exec_delete(sql, name, binds) end |
#empty_insert_statement_value(primary_key = nil) ⇒ Object
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 415 def empty_insert_statement_value(primary_key = nil) "DEFAULT VALUES" end |
#exec_delete(sql, name = nil, binds = []) ⇒ Object
Executes delete sql
statement in the context of this connection using binds
as the bind substitutes. name
is logged along with the executed sql
statement.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 138 def exec_delete(sql, name = nil, binds = []) exec_query(sql, name, binds) end |
#exec_insert(sql, name = nil, binds = [], pk = nil, sequence_name = nil) ⇒ Object
Executes insert sql
statement in the context of this connection using binds
as the bind substitutes. name
is logged along with the executed sql
statement.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 130 def exec_insert(sql, name = nil, binds = [], pk = nil, sequence_name = nil) sql, binds = sql_for_insert(sql, pk, binds) exec_query(sql, name, binds) end |
#exec_insert_all(sql, name) ⇒ Object
:nodoc:
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 149 def exec_insert_all(sql, name) # :nodoc: exec_query(sql, name) end |
#exec_query(sql, name = "SQL", binds = [], prepare: false) ⇒ Object
Executes sql
statement in the context of this connection using binds
as the bind substitutes. name
is logged along with the executed sql
statement.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 123 def exec_query(sql, name = "SQL", binds = [], prepare: false) raise NotImplementedError end |
#exec_rollback_db_transaction ⇒ Object
:nodoc:
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 377 def exec_rollback_db_transaction() end |
#exec_update(sql, name = nil, binds = []) ⇒ Object
Executes update sql
statement in the context of this connection using binds
as the bind substitutes. name
is logged along with the executed sql
statement.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 145 def exec_update(sql, name = nil, binds = []) exec_query(sql, name, binds) end |
#execute(sql, name = nil) ⇒ Object
Executes the SQL statement in the context of this connection and returns the raw result from the connection adapter. Note: depending on your database connector, the result returned by this method may be manually memory managed. Consider using the exec_query wrapper instead.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 116 def execute(sql, name = nil) raise NotImplementedError end |
#explain(arel, binds = []) ⇒ Object
:nodoc:
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 153 def explain(arel, binds = []) # :nodoc: raise NotImplementedError end |
#high_precision_current_timestamp ⇒ Object
Returns an Arel SQL literal for the CURRENT_TIMESTAMP for usage with arbitrary precision date/time columns.
Adapters supporting datetime with precision should override this to provide as much precision as is available.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 453 def HIGH_PRECISION_CURRENT_TIMESTAMP end |
#initialize ⇒ Object
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 6 def initialize super reset_transaction end |
#insert(arel, name = nil, pk = nil, id_value = nil, sequence_name = nil, binds = []) ⇒ Object Also known as: create
Executes an INSERT query and returns the new record’s ID
id_value
will be returned unless the value is nil
, in which case the database will attempt to calculate the last inserted id and return that value.
If the next id was calculated in advance (as in Oracle), it should be passed in as id_value
.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 165 def insert(arel, name = nil, pk = nil, id_value = nil, sequence_name = nil, binds = []) sql, binds = to_sql_and_binds(arel, binds) value = exec_insert(sql, name, binds, pk, sequence_name) id_value || last_inserted_id(value) end |
#insert_fixture(fixture, table_name) ⇒ Object
Inserts the given fixture into the table. Overridden in adapters that require something beyond a simple insert (e.g. Oracle). Most of adapters should implement insert_fixtures_set
that leverages bulk SQL insert. We keep this method to provide fallback for databases like sqlite that do not support bulk inserts.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 397 def insert_fixture(fixture, table_name) execute(build_fixture_sql(Array.wrap(fixture), table_name), "Fixture Insert") end |
#insert_fixtures_set(fixture_set, tables_to_delete = []) ⇒ Object
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 401 def insert_fixtures_set(fixture_set, tables_to_delete = []) fixture_inserts = build_fixture_statements(fixture_set) table_deletes = tables_to_delete.map { |table| "DELETE FROM #{quote_table_name(table)}" } statements = table_deletes + fixture_inserts with_multi_statements do disable_referential_integrity do transaction(requires_new: true) do execute_batch(statements, "Fixtures Load") end end end end |
#mark_transaction_written_if_write(sql) ⇒ Object
:nodoc:
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 328 def mark_transaction_written_if_write(sql) # :nodoc: transaction = current_transaction if transaction.open? transaction.written ||= write_query?(sql) end end |
#query(sql, name = nil) ⇒ Object
:nodoc:
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 102 def query(sql, name = nil) # :nodoc: exec_query(sql, name).rows end |
#query_value(sql, name = nil) ⇒ Object
:nodoc:
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 94 def query_value(sql, name = nil) # :nodoc: single_value_from_rows(query(sql, name)) end |
#query_values(sql, name = nil) ⇒ Object
:nodoc:
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 98 def query_values(sql, name = nil) # :nodoc: query(sql, name).map(&:first) end |
#reset_sequence!(table, column, sequence = nil) ⇒ Object
Set the sequence to the max value of the table’s column.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 388 def reset_sequence!(table, column, sequence = nil) # Do nothing by default. Implement for PostgreSQL, Oracle, ... end |
#reset_transaction ⇒ Object
:nodoc:
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 339 def reset_transaction # :nodoc: @transaction_manager = ConnectionAdapters::TransactionManager.new(self) end |
#rollback_db_transaction ⇒ Object
Rolls back the transaction (and turns on auto-committing). Must be done if the transaction block raises an exception or returns false.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 373 def rollback_db_transaction exec_rollback_db_transaction end |
#rollback_to_savepoint(name = nil) ⇒ Object
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 379 def rollback_to_savepoint(name = nil) exec_rollback_to_savepoint(name) end |
#sanitize_limit(limit) ⇒ Object
Sanitizes the given LIMIT parameter in order to prevent SQL injection.
The limit
may be anything that can evaluate to a string via #to_s. It should look like an integer, or an Arel SQL literal.
Returns Integer and Arel::Nodes::SqlLiteral limits as is.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 425 def sanitize_limit(limit) if limit.is_a?(Integer) || limit.is_a?(Arel::Nodes::SqlLiteral) limit else Integer(limit) end end |
#select_all(arel, name = nil, binds = [], preparable: nil, async: false) ⇒ Object
Returns an ActiveRecord::Result instance.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 62 def select_all(arel, name = nil, binds = [], preparable: nil, async: false) arel = arel_from_relation(arel) sql, binds, preparable = to_sql_and_binds(arel, binds, preparable) select(sql, name, binds, prepare: prepared_statements && preparable, async: async && FutureResult::SelectAll) rescue ::RangeError ActiveRecord::Result.empty end |
#select_one(arel, name = nil, binds = []) ⇒ Object
Returns a record hash with the column names as keys and column values as values.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 73 def select_one(arel, name = nil, binds = []) select_all(arel, name, binds).first end |
#select_rows(arel, name = nil, binds = []) ⇒ Object
Returns an array of arrays containing the field values. Order is the same as that returned by columns
.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 90 def select_rows(arel, name = nil, binds = []) select_all(arel, name, binds).rows end |
#select_value(arel, name = nil, binds = []) ⇒ Object
Returns a single value from a record
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 78 def select_value(arel, name = nil, binds = []) single_value_from_rows(select_rows(arel, name, binds)) end |
#select_values(arel, name = nil, binds = []) ⇒ Object
Returns an array of the values of the first column in a select:
select_values("SELECT id FROM companies LIMIT 3") => [1,2,3]
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 84 def select_values(arel, name = nil, binds = []) select_rows(arel, name, binds).map(&:first) end |
#to_sql(arel_or_sql_string, binds = []) ⇒ Object
Converts an arel AST to SQL
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 12 def to_sql(arel_or_sql_string, binds = []) sql, _ = to_sql_and_binds(arel_or_sql_string, binds) sql end |
#transaction(requires_new: nil, isolation: nil, joinable: true, &block) ⇒ Object
Runs the given block in a database transaction, and returns the result of the block.
Nested transactions support
#transaction calls can be nested. By default, this makes all database statements in the nested transaction block become part of the parent transaction. For example, the following behavior may be surprising:
ActiveRecord::Base.transaction do
Post.create(title: 'first')
ActiveRecord::Base.transaction do
Post.create(title: 'second')
raise ActiveRecord::Rollback
end
end
This creates both “first” and “second” posts. Reason is the ActiveRecord::Rollback exception in the nested block does not issue a ROLLBACK. Since these exceptions are captured in transaction blocks, the parent block does not see it and the real transaction is committed.
Most databases don’t support true nested transactions. At the time of writing, the only database that supports true nested transactions that we’re aware of, is MS-SQL.
In order to get around this problem, #transaction will emulate the effect of nested transactions, by using savepoints: dev.mysql.com/doc/refman/en/savepoint.html.
It is safe to call this method if a database transaction is already open, i.e. if #transaction is called within another #transaction block. In case of a nested call, #transaction will behave as follows:
-
The block will be run without doing anything. All database statements that happen within the block are effectively appended to the already open database transaction.
-
However, if
:requires_new
is set, the block will be wrapped in a database savepoint acting as a sub-transaction.
In order to get a ROLLBACK for the nested transaction you may ask for a real sub-transaction by passing requires_new: true
. If anything goes wrong, the database rolls back to the beginning of the sub-transaction without rolling back the parent transaction. If we add it to the previous example:
ActiveRecord::Base.transaction do
Post.create(title: 'first')
ActiveRecord::Base.transaction(requires_new: true) do
Post.create(title: 'second')
raise ActiveRecord::Rollback
end
end
only post with title “first” is created.
See ActiveRecord::Transactions to learn more.
Caveats
MySQL doesn’t support DDL transactions. If you perform a DDL operation, then any created savepoints will be automatically released. For example, if you’ve created a savepoint, then you execute a CREATE TABLE statement, then the savepoint that was created will be automatically released.
This means that, on MySQL, you shouldn’t execute DDL operations inside a #transaction call that you know might create a savepoint. Otherwise, #transaction will raise exceptions when it tries to release the already-automatically-released savepoints:
Model.connection.transaction do # BEGIN
Model.connection.transaction(requires_new: true) do # CREATE SAVEPOINT active_record_1
Model.connection.create_table(...)
# active_record_1 now automatically released
end # RELEASE SAVEPOINT active_record_1 <--- BOOM! database error!
end
Transaction isolation
If your database supports setting the isolation level for a transaction, you can set it like so:
Post.transaction(isolation: :serializable) do
# ...
end
Valid isolation levels are:
-
:read_uncommitted
-
:read_committed
-
:repeatable_read
-
:serializable
You should consult the documentation for your database to understand the semantics of these different levels:
An ActiveRecord::TransactionIsolationError will be raised if:
-
The adapter does not support setting the isolation level
-
You are joining an existing open transaction
-
You are creating a nested (savepoint) transaction
The mysql2 and postgresql adapters support setting the transaction isolation level.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 309 def transaction(requires_new: nil, isolation: nil, joinable: true, &block) if !requires_new && current_transaction.joinable? if isolation raise ActiveRecord::TransactionIsolationError, "cannot set isolation when joining a transaction" end yield else transaction_manager.within_new_transaction(isolation: isolation, joinable: joinable, &block) end rescue ActiveRecord::Rollback # rollbacks are silently swallowed end |
#transaction_isolation_levels ⇒ Object
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 352 def transaction_isolation_levels { read_uncommitted: "READ UNCOMMITTED", read_committed: "READ COMMITTED", repeatable_read: "REPEATABLE READ", serializable: "SERIALIZABLE" } end |
#transaction_open? ⇒ Boolean
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 335 def transaction_open? current_transaction.open? end |
#truncate(table_name, name = nil) ⇒ Object
Executes the truncate statement.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 185 def truncate(table_name, name = nil) execute(build_truncate_statement(table_name), name) end |
#truncate_tables(*table_names) ⇒ Object
:nodoc:
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 189 def truncate_tables(*table_names) # :nodoc: table_names -= [schema_migration.table_name, InternalMetadata.table_name] return if table_names.empty? with_multi_statements do disable_referential_integrity do statements = build_truncate_statements(table_names) execute_batch(statements, "Truncate Tables") end end end |
#update(arel, name = nil, binds = []) ⇒ Object
Executes the update statement and returns the number of rows affected.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 173 def update(arel, name = nil, binds = []) sql, binds = to_sql_and_binds(arel, binds) exec_update(sql, name, binds) end |
#with_yaml_fallback(value) ⇒ Object
Fixture value is quoted by Arel, however scalar values are not quotable. In this case we want to convert the column value to YAML.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 436 def with_yaml_fallback(value) # :nodoc: if value.is_a?(Hash) || value.is_a?(Array) YAML.dump(value) else value end end |
#write_query?(sql) ⇒ Boolean
Determines whether the SQL statement is a write query.
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# File 'lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/connection_adapters/abstract/database_statements.rb', line 107 def write_query?(sql) raise NotImplementedError end |