Class: ActiveRecord::ConnectionAdapters::SQLServerAdapter
Constant Summary
collapse
- ADAPTER_NAME =
'SQLServer'.freeze
ActiveRecord::ConnectionAdapters::SQLServer::Version::VERSION
ActiveRecord::ConnectionAdapters::SQLServer::Quoting::QUOTED_FALSE, ActiveRecord::ConnectionAdapters::SQLServer::Quoting::QUOTED_STRING_PREFIX, ActiveRecord::ConnectionAdapters::SQLServer::Quoting::QUOTED_TRUE
ActiveRecord::ConnectionAdapters::SQLServer::Showplan::OPTIONS, ActiveRecord::ConnectionAdapters::SQLServer::Showplan::OPTION_ALL, ActiveRecord::ConnectionAdapters::SQLServer::Showplan::OPTION_TEXT, ActiveRecord::ConnectionAdapters::SQLServer::Showplan::OPTION_XML
Instance Attribute Summary collapse
Instance Method Summary
collapse
#quote_column_name, #quote_default_value, #quote_string, #quoted_date, #quoted_false, #quoted_true, #unquoted_false, #unquoted_true
#begin_db_transaction, #begin_isolated_db_transaction, #case_insensitive_comparison, #case_sensitive_comparison, #case_sensitive_modifier, #commit_db_transaction, #create_savepoint, #exec_delete, #exec_insert, #exec_query, #exec_rollback_db_transaction, #exec_rollback_to_savepoint, #exec_update, #execute, #execute_procedure, #newid_function, #newsequentialid_function, #release_savepoint, #select_rows, #set_transaction_isolation_level, #supports_statement_cache?, #transaction_isolation_levels, #use_database, #user_options, #user_options_dateformat, #user_options_isolation_level, #user_options_language, #with_identity_insert_enabled
#explain
#change_column, #change_column_default, #change_column_null, #columns, #columns_for_distinct, #create_table, #extract_foreign_key_action, #foreign_keys, #indexes, #native_database_types, #new_column, #remove_column, #remove_index!, #rename_column, #rename_index, #rename_table, #table_exists?, #tables, #type_to_sql, #views
#column_name_length, #columns_per_multicolumn_index, #columns_per_table, #in_clause_length, #index_name_length, #indexes_per_table, #joins_per_query, #sql_query_length, #table_alias_length, #table_name_length
#charset, #collation, #create_database, #current_database, #drop_database
Constructor Details
#initialize(connection, logger, pool, config) ⇒ SQLServerAdapter
Returns a new instance of SQLServerAdapter.
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 50
def initialize(connection, logger, pool, config)
super(connection, logger, pool)
@schema_cache = SQLServer::SchemaCache.new self
@visitor = Arel::Visitors::SQLServer.new self
@prepared_statements = true
@connection_options = config
connect
@sqlserver_azure = !!(select_value('SELECT @@version', 'SCHEMA') =~ /Azure/i)
initialize_dateformatter
use_database
end
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Instance Attribute Details
#spid ⇒ Object
Returns the value of attribute spid.
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 41
def spid
@spid
end
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Instance Method Details
#active? ⇒ Boolean
Abstract Adapter (Connection Management) ================== #
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 132
def active?
return false unless @connection
raw_connection_do 'SELECT 1'
true
rescue TinyTds::Error, ODBC::Error
false
end
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#adapter_name ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 74
def adapter_name
ADAPTER_NAME
end
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#database_prefix ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 203
def database_prefix
@connection_options[:database_prefix]
end
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#database_prefix_remote_server? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 197
def database_prefix_remote_server?
return false if database_prefix.blank?
name = SQLServer::Utils.(database_prefix)
name.fully_qualified? && name.object.blank?
end
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#disable_referential_integrity ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 122
def disable_referential_integrity
tables = tables_with_referential_integrity
tables.each { |t| do_execute "ALTER TABLE #{t} NOCHECK CONSTRAINT ALL" }
yield
ensure
tables.each { |t| do_execute "ALTER TABLE #{t} CHECK CONSTRAINT ALL" }
end
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#disconnect! ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 146
def disconnect!
super
@spid = nil
case @connection_options[:mode]
when :dblib
@connection.close rescue nil
when :odbc
@connection.disconnect rescue nil
end
@connection = nil
end
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#inspect ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 211
def inspect
"#<#{self.class} version: #{version}, mode: #{@connection_options[:mode]}, azure: #{sqlserver_azure?.inspect}>"
end
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#pk_and_sequence_for(table_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 178
def pk_and_sequence_for(table_name)
pk = primary_key(table_name)
pk ? [pk, nil] : nil
end
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#primary_key(table_name) ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 183
def primary_key(table_name)
identity_column(table_name).try(:name) || schema_cache.columns(table_name).find(&:is_primary?).try(:name)
end
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#reconnect! ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 140
def reconnect!
super
disconnect!
connect
end
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#reset! ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 158
def reset!
reset_transaction
do_execute 'IF @@TRANCOUNT > 0 ROLLBACK TRANSACTION'
end
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#schema_creation ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 70
def schema_creation
SQLServer::SchemaCreation.new self
end
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#sqlserver? ⇒ Boolean
SQLServer Specific (DB Reflection) ======================== #
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 189
def sqlserver?
true
end
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#sqlserver_azure? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 193
def sqlserver_azure?
@sqlserver_azure
end
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#supports_bulk_alter? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 94
def supports_bulk_alter?
false
end
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#supports_count_distinct? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 86
def supports_count_distinct?
true
end
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#supports_ddl_transactions? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 90
def supports_ddl_transactions?
true
end
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#supports_explain? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 106
def supports_explain?
true
end
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#supports_foreign_keys? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 118
def supports_foreign_keys?
true
end
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#supports_index_sort_order? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 98
def supports_index_sort_order?
true
end
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#supports_migrations? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 78
def supports_migrations?
true
end
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#supports_partial_index? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 102
def supports_partial_index?
true
end
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#supports_primary_key? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 82
def supports_primary_key?
true
end
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#supports_transaction_isolation? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 110
def supports_transaction_isolation?
true
end
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#supports_views? ⇒ Boolean
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 114
def supports_views?
true
end
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#tables_with_referential_integrity ⇒ Object
Abstract Adapter (Misc Support) =========================== #
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 165
def tables_with_referential_integrity
schemas_and_tables = select_rows <<-SQL.strip_heredoc
SELECT s.name, o.name
FROM sys.foreign_keys i
INNER JOIN sys.objects o ON i.parent_object_id = o.OBJECT_ID
INNER JOIN sys.schemas s ON o.schema_id = s.schema_id
SQL
schemas_and_tables.map do |schema_table|
schema, table = schema_table
"#{SQLServer::Utils.quoted_raw(schema)}.#{SQLServer::Utils.quoted_raw(table)}"
end
end
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#valid_type?(type) ⇒ Boolean
Abstract Adapter ========================================== #
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 66
def valid_type?(type)
!native_database_types[type].nil?
end
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#version ⇒ Object
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# File 'lib/active_record/connection_adapters/sqlserver_adapter.rb', line 207
def version
self.class::VERSION
end
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