Class: Sequel::Amalgalite::Database
- Includes:
- SQLite::DatabaseMethods
- Defined in:
- lib/sequel/adapters/amalgalite.rb
Overview
Database class for SQLite databases used with Sequel and the amalgalite driver.
Constant Summary
Constants included from SQLite::DatabaseMethods
SQLite::DatabaseMethods::AUTO_VACUUM, SQLite::DatabaseMethods::PRIMARY_KEY_INDEX_RE, SQLite::DatabaseMethods::SYNCHRONOUS, SQLite::DatabaseMethods::TABLES_FILTER, SQLite::DatabaseMethods::TEMP_STORE
Constants inherited from Database
Database::ADAPTERS, Database::AUTOINCREMENT, Database::CASCADE, Database::COMMA_SEPARATOR, Database::MSSQL_DEFAULT_RE, Database::MYSQL_TIMESTAMP_RE, Database::NOT_NULL, Database::NO_ACTION, Database::NULL, Database::POSTGRES_DEFAULT_RE, Database::PRIMARY_KEY, Database::RESTRICT, Database::SET_DEFAULT, Database::SET_NULL, Database::SQL_BEGIN, Database::SQL_COMMIT, Database::SQL_RELEASE_SAVEPOINT, Database::SQL_ROLLBACK, Database::SQL_ROLLBACK_TO_SAVEPOINT, Database::SQL_SAVEPOINT, Database::STRING_DEFAULT_RE, Database::TEMPORARY, Database::TRANSACTION_BEGIN, Database::TRANSACTION_COMMIT, Database::TRANSACTION_ISOLATION_LEVELS, Database::TRANSACTION_ROLLBACK, Database::UNDERSCORE, Database::UNIQUE, Database::UNSIGNED
Instance Attribute Summary
Attributes inherited from Database
#default_schema, #log_warn_duration, #loggers, #opts, #pool, #prepared_statements, #sql_log_level, #transaction_isolation_level
Instance Method Summary collapse
-
#connect(server) ⇒ Object
Connect to the database.
-
#database_type ⇒ Object
Amalgalite is just the SQLite database without a separate SQLite installation.
-
#dataset(opts = nil) ⇒ Object
Return instance of Sequel::Amalgalite::Dataset with the given options.
-
#execute(sql, opts = {}) ⇒ Object
Run the given SQL with the given arguments and yield each row.
-
#execute_ddl(sql, opts = {}) ⇒ Object
Run the given SQL with the given arguments.
-
#execute_dui(sql, opts = {}) ⇒ Object
Run the given SQL with the given arguments and return the number of changed rows.
-
#execute_insert(sql, opts = {}) ⇒ Object
Run the given SQL with the given arguments and return the last inserted row id.
-
#single_value(sql, opts = {}) ⇒ Object
Run the given SQL with the given arguments and return the first value of the first row.
Methods included from SQLite::DatabaseMethods
#alter_table, #auto_vacuum, #auto_vacuum=, #foreign_keys, #foreign_keys=, #indexes, #pragma_get, #pragma_set, #sqlite_version, #supports_savepoints?, #synchronous, #synchronous=, #tables, #temp_store, #temp_store=
Methods inherited from Database
#<<, #[], adapter_class, #adapter_scheme, adapter_scheme, #add_column, #add_index, #add_servers, #alter_table, #call, #cast_type_literal, connect, #create_or_replace_view, #create_table, #create_table!, #create_table?, #create_view, #disconnect, #drop_column, #drop_index, #drop_table, #drop_view, #dump_indexes_migration, #dump_schema_migration, #dump_table_schema, #each_server, #fetch, #from, #get, identifier_input_method, #identifier_input_method, #identifier_input_method=, identifier_input_method=, #identifier_output_method, identifier_output_method, #identifier_output_method=, identifier_output_method=, #indexes, #initialize, #inspect, #literal, #log_info, #log_yield, #logger=, #query, #quote_identifiers=, quote_identifiers=, #quote_identifiers?, #remove_servers, #rename_column, #rename_table, #run, #schema, #select, #serial_primary_key_options, #servers, #set_column_default, #set_column_type, single_threaded=, #single_threaded?, #supports_prepared_transactions?, #supports_savepoints?, #supports_transaction_isolation_levels?, #synchronize, #table_exists?, #tables, #test_connection, #transaction, #typecast_value, #uri, #url
Methods included from Metaprogramming
Constructor Details
This class inherits a constructor from Sequel::Database
Instance Method Details
#connect(server) ⇒ Object
Connect to the database. Since SQLite is a file based database, the only options available are :database (to specify the database name), and :timeout, to specify how long to wait for the database to be available if it is locked, given in milliseconds (default is 5000).
66 67 68 69 70 71 72 73 |
# File 'lib/sequel/adapters/amalgalite.rb', line 66 def connect(server) opts = server_opts(server) opts[:database] = ':memory:' if blank_object?(opts[:database]) db = ::Amalgalite::Database.new(opts[:database]) db.busy_handler(::Amalgalite::BusyTimeout.new(opts.fetch(:timeout, 5000)/50, 50)) db.type_map = SequelTypeMap.new db end |
#database_type ⇒ Object
Amalgalite is just the SQLite database without a separate SQLite installation.
76 77 78 |
# File 'lib/sequel/adapters/amalgalite.rb', line 76 def database_type :sqlite end |
#dataset(opts = nil) ⇒ Object
Return instance of Sequel::Amalgalite::Dataset with the given options.
81 82 83 |
# File 'lib/sequel/adapters/amalgalite.rb', line 81 def dataset(opts = nil) Amalgalite::Dataset.new(self, opts) end |
#execute(sql, opts = {}) ⇒ Object
Run the given SQL with the given arguments and yield each row.
102 103 104 105 106 107 108 109 110 |
# File 'lib/sequel/adapters/amalgalite.rb', line 102 def execute(sql, opts={}) _execute(sql, opts) do |conn| begin yield(stmt = log_yield(sql){conn.prepare(sql)}) ensure stmt.close if stmt end end end |
#execute_ddl(sql, opts = {}) ⇒ Object
Run the given SQL with the given arguments. Returns nil.
86 87 88 89 |
# File 'lib/sequel/adapters/amalgalite.rb', line 86 def execute_ddl(sql, opts={}) _execute(sql, opts){|conn| log_yield(sql){conn.execute_batch(sql)}} nil end |
#execute_dui(sql, opts = {}) ⇒ Object
Run the given SQL with the given arguments and return the number of changed rows.
92 93 94 |
# File 'lib/sequel/adapters/amalgalite.rb', line 92 def execute_dui(sql, opts={}) _execute(sql, opts){|conn| log_yield(sql){conn.execute_batch(sql)}; conn.row_changes} end |
#execute_insert(sql, opts = {}) ⇒ Object
Run the given SQL with the given arguments and return the last inserted row id.
97 98 99 |
# File 'lib/sequel/adapters/amalgalite.rb', line 97 def execute_insert(sql, opts={}) _execute(sql, opts){|conn| log_yield(sql){conn.execute_batch(sql)}; conn.last_insert_rowid} end |
#single_value(sql, opts = {}) ⇒ Object
Run the given SQL with the given arguments and return the first value of the first row.
113 114 115 |
# File 'lib/sequel/adapters/amalgalite.rb', line 113 def single_value(sql, opts={}) _execute(sql, opts){|conn| log_yield(sql){conn.first_value_from(sql)}} end |