Module: ActiveRecord::ConnectionAdapters::SQLite3::DatabaseStatements
- Included in:
- ActiveRecord::ConnectionAdapters::SQLite3Adapter
- Defined in:
- lib/active_record/connection_adapters/sqlite3/database_statements.rb
Instance Method Summary collapse
-
#begin_db_transaction ⇒ Object
:nodoc:.
-
#begin_isolated_db_transaction(isolation) ⇒ Object
:nodoc:.
-
#commit_db_transaction ⇒ Object
:nodoc:.
-
#exec_delete(sql, name = "SQL", binds = []) ⇒ Object
(also: #exec_update)
:nodoc:.
-
#exec_rollback_db_transaction ⇒ Object
:nodoc:.
- #explain(arel, binds = [], _options = []) ⇒ Object
- #high_precision_current_timestamp ⇒ Object
-
#internal_exec_query(sql, name = nil, binds = [], prepare: false, async: false) ⇒ Object
:nodoc:.
-
#write_query?(sql) ⇒ Boolean
:nodoc:.
Instance Method Details
#begin_db_transaction ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/sqlite3/database_statements.rb', line 76 def begin_db_transaction # :nodoc: log("begin transaction", "TRANSACTION") do with_raw_connection(allow_retry: true, materialize_transactions: false) do |conn| conn.transaction end end end |
#begin_isolated_db_transaction(isolation) ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/sqlite3/database_statements.rb', line 65 def begin_isolated_db_transaction(isolation) # :nodoc: raise TransactionIsolationError, "SQLite3 only supports the `read_uncommitted` transaction isolation level" if isolation != :read_uncommitted raise StandardError, "You need to enable the shared-cache mode in SQLite mode before attempting to change the transaction isolation level" unless shared_cache? with_raw_connection(allow_retry: true, materialize_transactions: false) do |conn| ActiveSupport::IsolatedExecutionState[:active_record_read_uncommitted] = conn.get_first_value("PRAGMA read_uncommitted") conn.read_uncommitted = true begin_db_transaction end end |
#commit_db_transaction ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/sqlite3/database_statements.rb', line 84 def commit_db_transaction # :nodoc: log("commit transaction", "TRANSACTION") do with_raw_connection(allow_retry: true, materialize_transactions: false) do |conn| conn.commit end end reset_read_uncommitted end |
#exec_delete(sql, name = "SQL", binds = []) ⇒ Object Also known as: exec_update
:nodoc:
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# File 'lib/active_record/connection_adapters/sqlite3/database_statements.rb', line 59 def exec_delete(sql, name = "SQL", binds = []) # :nodoc: internal_exec_query(sql, name, binds) @raw_connection.changes end |
#exec_rollback_db_transaction ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/sqlite3/database_statements.rb', line 93 def exec_rollback_db_transaction # :nodoc: log("rollback transaction", "TRANSACTION") do with_raw_connection(allow_retry: true, materialize_transactions: false) do |conn| conn.rollback end end reset_read_uncommitted end |
#explain(arel, binds = [], _options = []) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlite3/database_statements.rb', line 18 def explain(arel, binds = [], = []) sql = "EXPLAIN QUERY PLAN " + to_sql(arel, binds) result = internal_exec_query(sql, "EXPLAIN", []) SQLite3::ExplainPrettyPrinter.new.pp(result) end |
#high_precision_current_timestamp ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlite3/database_statements.rb', line 107 def HIGH_PRECISION_CURRENT_TIMESTAMP end |
#internal_exec_query(sql, name = nil, binds = [], prepare: false, async: false) ⇒ Object
:nodoc:
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# File 'lib/active_record/connection_adapters/sqlite3/database_statements.rb', line 24 def internal_exec_query(sql, name = nil, binds = [], prepare: false, async: false) # :nodoc: sql = transform_query(sql) check_if_write_query(sql) mark_transaction_written_if_write(sql) type_casted_binds = type_casted_binds(binds) log(sql, name, binds, type_casted_binds, async: async) do with_raw_connection do |conn| # Don't cache statements if they are not prepared unless prepare stmt = conn.prepare(sql) begin cols = stmt.columns unless without_prepared_statement?(binds) stmt.bind_params(type_casted_binds) end records = stmt.to_a ensure stmt.close end else stmt = @statements[sql] ||= conn.prepare(sql) cols = stmt.columns stmt.reset! stmt.bind_params(type_casted_binds) records = stmt.to_a end build_result(columns: cols, rows: records) end end end |
#write_query?(sql) ⇒ Boolean
:nodoc:
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# File 'lib/active_record/connection_adapters/sqlite3/database_statements.rb', line 12 def write_query?(sql) # :nodoc: !READ_QUERY.match?(sql) rescue ArgumentError # Invalid encoding !READ_QUERY.match?(sql.b) end |