Class: OCI8::Object::Base
Constant Summary collapse
- @@class_to_name =
{}
- @@name_to_class =
{}
- @@default_connection =
nil
Class Method Summary collapse
- .default_connection=(con) ⇒ Object
- .get_class_by_typename(name) ⇒ Object
- .inherited(klass) ⇒ Object
-
.method_missing(method_id, *args) ⇒ Object
class method.
- .set_typename(name) ⇒ Object
- .typename ⇒ Object
Instance Method Summary collapse
-
#initialize(*args) ⇒ Base
constructor
A new instance of Base.
-
#method_missing(method_id, *args) ⇒ Object
instance method.
Constructor Details
#initialize(*args) ⇒ Base
Returns a new instance of Base.
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# File 'lib/oci8/object.rb', line 132 def initialize(*args) @attributes = {} if args[0].is_a? OCI8 @con = args.shift else @con = @@default_connection end return if args.empty? raise "no connection is specified." if @con.nil? # setup a TDO object. tdo = @con.get_tdo_by_class(self.class) # call constructor. bind_arg_helper = BindArgumentHelper.new(*args) sql = <<EOS BEGIN :self := #{tdo.typename}(#{bind_arg_helper.arg_str}); END; EOS csr = @con.parse(sql) begin csr.bind_param(:self, nil, :named_type_internal, tdo) bind_arg_helper.exec(@con, csr) @attributes = csr[:self].attributes ensure csr.close end end |
Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#method_missing(method_id, *args) ⇒ Object
instance method
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# File 'lib/oci8/object.rb', line 207 def method_missing(method_id, *args) if @attributes.is_a? Array return @attributes if method_id == :to_ary super end # getter func if @attributes.has_key?(method_id) if args.length != 0 raise ArgumentError, "wrong number of arguments (#{args.length} for 0)" end return @attributes[method_id] end # setter func method_name = method_id.to_s if method_name[-1] == ?= attr = method_name[0...-1].intern if @attributes.has_key?(attr) if args.length != 1 raise ArgumentError, "wrong number of arguments (#{args.length} for 1)" end return @attributes[attr] = args[0] end end super if @con.nil? tdo = @con.get_tdo_by_class(self.class) return_type = tdo.instance_methods[method_id] if return_type == :none # procedure bind_arg_helper = BindArgumentHelper.new(*args) sql = <<EOS DECLARE val #{tdo.typename} := :self; BEGIN val.#{method_id}(#{bind_arg_helper.arg_str}); :self := val; END; EOS csr = @con.parse(sql) begin csr.bind_param(:self, nil, :named_type_internal, tdo) csr[:self].attributes = self bind_arg_helper.exec(@con, csr) @attributes = csr[:self].attributes ensure csr.close end return nil elsif return_type # function bind_arg_helper = BindArgumentHelper.new(*args) sql = <<EOS DECLARE val #{tdo.typename} := :self; BEGIN :rv := val.#{method_id}(#{bind_arg_helper.arg_str}); :self := val; END; EOS csr = @con.parse(sql) begin csr.bind_param(:self, nil, :named_type_internal, tdo) csr.bind_param(:rv, nil, return_type) csr[:self].attributes = self bind_arg_helper.exec(@con, csr) @attributes = csr[:self].attributes rv = csr[:rv] ensure csr.close end return rv end # The method is not found. super end |
Class Method Details
.default_connection=(con) ⇒ Object
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# File 'lib/oci8/object.rb', line 128 def self.default_connection=(con) @@default_connection = con end |
.get_class_by_typename(name) ⇒ Object
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# File 'lib/oci8/object.rb', line 111 def self.get_class_by_typename(name) @@name_to_class[name] end |
.inherited(klass) ⇒ Object
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# File 'lib/oci8/object.rb', line 105 def self.inherited(klass) name = klass.to_s.gsub(/^.*::/, '').gsub(/([a-z\d])([A-Z])/,'\1_\2').upcase @@class_to_name[klass] = name @@name_to_class[name] = klass end |
.method_missing(method_id, *args) ⇒ Object
class method
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# File 'lib/oci8/object.rb', line 161 def self.method_missing(method_id, *args) if args[0].is_a? OCI8 con = args.shift else con = @@default_connection end tdo = con.get_tdo_by_class(self) return_type = tdo.class_methods[method_id] if return_type == :none # procedure bind_arg_helper = BindArgumentHelper.new(*args) sql = <<EOS BEGIN #{tdo.typename}.#{method_id}(#{bind_arg_helper.arg_str}); END; EOS csr = con.parse(sql) begin bind_arg_helper.exec(con, csr) ensure csr.close end return nil elsif return_type # function return_type = tdo.class_methods[method_id] bind_arg_helper = BindArgumentHelper.new(*args) sql = <<EOS BEGIN :rv := #{tdo.typename}.#{method_id}(#{bind_arg_helper.arg_str}); END; EOS csr = con.parse(sql) begin csr.bind_param(:rv, nil, return_type) bind_arg_helper.exec(con, csr) rv = csr[:rv] ensure csr.close end return rv end super # The method is not found. end |
.set_typename(name) ⇒ Object
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# File 'lib/oci8/object.rb', line 119 def self.set_typename(name) # delete an old name-to-class mapping. @@name_to_class[@@class_to_name[self]] = nil # set a new name-to-class mapping. name = name.upcase @@class_to_name[self] = name @@name_to_class[name] = self end |
.typename ⇒ Object
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# File 'lib/oci8/object.rb', line 115 def self.typename @@class_to_name[self] end |