73 lines
2.5 KiB
Ruby
73 lines
2.5 KiB
Ruby
module ActiveRecord
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module ConnectionAdapters
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module SchemaStatements
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def quote_column_names(column_name)
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Array(column_name).map { |e| quote_column_name(e) }.join(", ")
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end
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def add_primary_key(table_name, column_name, options = {})
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column_names = Array(column_name)
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quoted_column_names = column_names.map { |e| quote_column_name(e) }.join(", ")
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execute "ALTER TABLE #{table_name} ADD PRIMARY KEY (#{quoted_column_names})"
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end
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def remove_primary_key(table_name)
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execute "ALTER TABLE #{table_name} DROP PRIMARY KEY"
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end
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def add_foreign_key(table_name, column_name, reftbl, refcol = nil)
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execute "ALTER TABLE #{table_name} ADD " +
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"FOREIGN KEY (#{quote_column_names(column_name)}) " +
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"REFERENCES #{reftbl} (#{quote_column_names(refcol || column_name)})"
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end
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alias_method :old_options_include_default?, :options_include_default?
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def options_include_default?(options)
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return false if options[:options] =~ /AUTO_INCREMENT/i
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return old_options_include_default?(options)
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end
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alias_method :old_add_column_options!, :add_column_options!
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def add_column_options!(sql, options)
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sql << " UNSIGNED" if options[:unsigned]
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old_add_column_options!(sql, options)
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sql << " #{options[:options]}"
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end
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end
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class MysqlAdapter
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alias_method :old_native_database_types, :native_database_types
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def native_database_types
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types = old_native_database_types
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types[:bigint] = { :name => "bigint", :limit => 20 }
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types[:double] = { :name => "double" }
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types
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end
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def change_column(table_name, column_name, type, options = {})
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unless options_include_default?(options)
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options[:default] = select_one("SHOW COLUMNS FROM #{table_name} LIKE '#{column_name}'")["Default"]
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unless type == :string or type == :text
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options.delete(:default) if options[:default] = "";
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end
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end
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change_column_sql = "ALTER TABLE #{table_name} CHANGE #{column_name} #{column_name} #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}"
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add_column_options!(change_column_sql, options)
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execute(change_column_sql)
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end
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def myisam_table
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return { :id => false, :force => true, :options => "ENGINE=MyIsam" }
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end
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def innodb_table
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return { :id => false, :force => true, :options => "ENGINE=InnoDB" }
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end
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end
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end
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end
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