FIELD OF THE INVENTION

The present invention relates to an apparatus and method for modeling frameworks; and, more particularly, to an apparatus and method for structurally and movably modeling frameworks, to thereby get a lot of information necessary for embodying the frameworks from object-oriented analysis information using a unified modeling language (UML).

DESCRIPTION OF THE PRIOR ART

At the present there is a growing tendency in an importance for a reuse of a software with active researches for frameworks and are being actually manufactured commercial products appropriate for a specific domain.

In general, however, it is the actual condition that the research for the framework can be only said a start, especially researches, not only for modeling the frameworks based on the UML, but also for a framework developing methodology, do not exist at all.

These researches are essential to develop the frameworks and extend a reusing efficiency of the software by utilizing the existed object-oriented analysis information on the condition of an activated research in related respective fields.

SUMMARY OF THE INVENTION

It is, therefore, a primary object of the invention to provide an apparatus and method for modeling frameworks by executing class, control flow and interface analyses within the framework, in which various information necessary for a framework embodiment can be simply obtained from analysis information generated through a use of a UML.

In accordance with the present invention for achieving the above object, an apparatus for modeling frameworks includes an analysis information writing block for describing, by using the UML, a use case diagram, a use case events flow, a sequence diagram and a class diagram; an identification block for discriminating frameworks by using the use case diagram; a structural modeling block for discriminating objects and messages of the sequence diagram via a use of results from the analysis information writing block and the identification block, and structurally modeling the frameworks by discriminating a relation among classes within the class diagram; and a movable modeling block for identifying objects, message flows and messages of the sequence diagram by using results of the analysis information writing block and the identification block, and movably modeling the frameworks by discriminating classes, control flows and interfaces within the framework.

The inventive apparatus further includes an analysis information processing block for processing analysis information modelled by the structural modeling block and the movable modeling block, for the sake of embodying such frameworks.

In accordance with the present invention for attaining the above object, a method for modeling frameworks, for use of a computing system, includes a first step of describing, by using the UML, a use case diagram, a flow of events, a sequence diagram and a class diagram; a second step of discriminating frameworks from the use case diagram; a third step of discriminating objects and messages of the sequence diagram and identifying a relation among classes within the class diagram, and then structurally modeling the framework; and a fourth step of discriminating objects, message flows and messages of the sequence diagram, and identifying classes, control flows and interfaces within the framework, and then movably modeling the framework.

The inventive method further includes a fifth step of processing analysis information modelled structurally and movably as above-mentioned, for the sake of embodying such frameworks.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects and features of the instant invention will become apparent from the following description of preferred embodiments taken in conjunction with the accompanying drawings, in which:

FIG. 1

depicts an explanatory diagram showing a relation among diagrams for a structural modeling of a framework in accordance with the present invention;

FIG. 2

represents an explanatory diagram providing a relation among diagrams for a movable modeling of a framework in the invention;

FIG. 3

provides a block diagram of one preferred embodiment in an inventive framework modeling apparatus;

FIG. 4

sets forth an overall flow chart of one preferred embodiment in an inventive framework modeling method;

FIG. 5

a

illustrates a detailed flow chart representing one embodiment for the framework structural modeling process in the invention; and

FIG. 5

b

offers a detailed flow chart of one preferred embodiment for the framework movable modeling process in the present invention.

DETAILED DESCRIPTION PREFERRED EMBODIMENTS

The preferred embodiments of the present invention are described in detail as follows, referring to the accompanying drawings.

Schematically describing a method for structurally and movably modeling a framework, a structural modeling process is to identify classes constituting a framework by utilizing a correlation among a use case event flow, a sequence diagram and a class diagram, which are as analysis information using the UML, and are also related to a course for discriminating a relation among the classes. That is, events in the flow of events are mapped as messages of the sequence diagram, and the messages of the sequence diagram are mapped as methods of classes within the class diagram. Such relation among them can be applied to embodying the framework.

Meanwhile, the movable modeling process is to discriminate a control flow and an interface within the framework by using a use case event flow and a sequence diagram. That is to say, control flow information within a use case event flow can be represented as a message flow of the sequence diagram, and the message flow of the sequence diagram is mapped as a control flow of the framework. Such a fact may be used in definitely grasping a flow of messages among objects.

Information gotten through such modeling processes can be utilized as analysis information necessary for embodying the framework and such embodied framework can be utilized as a substructure in developing software, to thereby furnish many advantages in the aspects of a software reuse and its maintenance-repair.

FIG. 1

provides an explanatory diagram showing a relation among diagrams in a structural modeling process applied to an inventive framework, in which it represents a correlation among a use case event flow

11

, a sequence diagram

12

and a class diagram

13

which are as analysis information using the UML.

In a structural modeling process of a framework, respective events within a use case event flow

11

are represented as messages of the sequence diagram

12

, and the messages within the sequence diagram

12

are mapped as methods of classes within the class diagram

13

.

In

FIG. 1

, there are six events T

1

to T

6

in a use case event flow

11

, in which third and fifth events T

3

and T

5

are respectively mapped to first and fourth messages F

1

and F

4

of the sequence diagram

12

. The first and fourth messages F

1

and F

4

of the sequence diagram

12

are each mapped to a method [f

1

( )] of a class A and a method [f

4

( )] of a class C in the class diagram

13

.

FIG. 2

sets forth an explanatory diagram providing a relation among diagrams in a movable modeling process applied to an inventive framework, in which it represents a constructive correlation among the use case events flow

11

, the sequence diagram

12

, a control flow and interface of a framework X

21

, which are as analysis information using the UML.

In a movable modeling process of a framework, control information of the use case event flow

11

is represented as a flow of messages in the sequence diagram

12

, and the flow of messages within the sequence diagram

12

is mapped as the control flow of the framework X

21

.

In

FIG. 2

, there are six events T

1

to T

6

in the use case events flow

11

, in which first, second, fourth, fifth and sixth events T

1

, T

2

, T

4

, T

5

and T

6

are respectively mapped to first to fifth messages F

1

to F

5

in the sequence diagram

12

.

Objects a,b,c,d related to such message flow are mapped to classes within the framework X

21

, and at this time, a message flow among the respective classes is a control flow within the framework X

21

. In other words, the message flow of the sequence diagram

12

as F

1

→F

2

→F

3

→F

4

→F

5

is as the control flow of the framework X

21

as f

1

( )_

1

→f

1

( )_

2

→f

1

( )_

3

→f

1

( )_

4

→f

1

( )_

5

.

FIG. 3

depicts a block diagram of one preferred embodiment for a framework modeling apparatus in the invention.

The inventive framework modeling apparatus includes an analysis information writing block

31

for describing, by using the UML, a use case diagram, a use case events flow, a sequence diagram and a class diagram; a framework identifying block

32

for discriminating frameworks from the use case diagram; a framework structural modeling block

33

for discriminating objects and messages of the sequence diagram via a use of results from the analysis information writing block

31

and the framework identifying block

32

, and identifying mutual classes and a relation among classes within the class diagram; and a framework movable modeling block

34

for identifying messages, a message flow and objects of the sequence diagram by using results of the analysis information writing block

31

and the framework identifying block

32

, and discriminating classes, a control flow and an interface within the framework. The framework modeling apparatus further includes a framework analysis information processing block

35

for processing analysis information modelled by the framework structural modeling block

33

and the framework movable modeling block

34

, for the sake of embodying the framework.

The analysis information writing block

31

writes out, by using the UML, a use case diagram, a use case events flow explaining the use case diagram, a sequence diagram which represents an exchange of messages between objects and a class diagram which provides classes and a relation among the classes.

The framework identifying block

32

distinguishes the frameworks from the use case diagram written out in the analysis information writing block

31

.

The framework structural modeling block

33

executes a structural modeling of the framework by using results of the analysis information writing block

31

and the framework identifying block

32

.

Functions of the framework structural modeling block

33

are described in detail as follows.

In a first function, messages of the sequence diagram mapped with events provided within the use case event flow are distinguished from one another. Herewith, a message belonging to a specific use case can be extracted therefrom, since each of the events within the use case events flow is mapped to each message of the sequence diagram.

As a second function, objects receiving the distinguished messages are discriminated in the sequence diagram. These objects have methods corresponding to messages, thus are used for a class extraction.

Third, methods and classes complying with messages and objects are identified from the class diagram, and such identified classes become classes constituting the framework.

In a fourth function, it is discriminated a relation among classes constituting the framework, and herewith such process can be applied to all frameworks.

The framework movable modeling block

34

executes a movable modeling of the framework by using results of the analysis information writing block

31

and the framework identifying block

32

.

Functions of the framework movable modeling block

34

are provided in detail as follows.

First, messages of the sequence diagram mapped with events provided within the use case events flow, and a flow of messages, are distinguished.

Second, objects related with the distinguished message flow are discriminated.

In a third function, classes of the framework mapped with the discriminated objects are identified. In such identifying process, the classes of the framework extracted in the framework structural modeling process can be utilized.

As a fourth function, message flows among the distinguished classes within the framework are identified and the identified message flows become control flows of the framework.

Fifth, methods as start points of control flows are discriminated and such discriminated methods become interfaces of the framework.

The framework analysis information processing block

35

uses results from the structural and movable modeling processes executed in the framework structural modeling block

33

and the framework movable modeling block

34

, as analysis information necessary for embodying the framework.

FIG. 4

represents an overall flow chart of one preferred embodiment for a framework modeling method in the present invention.

In a step

401

, first, the analysis information writing block

31

writes out, by using the UML, a use case diagram, a use case events flow explaining the use case diagram, a sequence diagram which represents an exchange of messages between objects and a class diagram which provides classes and a relation among the classes.

In a step

402

, next, the framework identifying block

32

distinguishes the frameworks from the use case diagram written out in the analysis information writing block

31

.

In a step

403

, then, the framework structural modeling block

33

executes a structural modeling of the framework by using results of the analysis information writing block

31

and the framework identifying block

32

.

Referring to

FIG. 5

a,

the framework structural modeling process of the step

403

is described as follows.

In a step

501

, first, messages of the sequence diagram mapped with events provided within the use case event flow are distinguished from one another. Herewith, a message belonging to a specific use case can be extracted therefrom, since each of the events within the use case event flow is mapped to each message of the sequence diagram.

In a step

502

, next, objects receiving the distinguished messages are discriminated in the sequence diagram. These objects have methods corresponding to messages, thus are used for a class extraction.

Thereafter, methods and classes complying with messages and objects are identified from the class diagram in a step

503

, and such identified classes become classes constituting the framework.

Then, it is discriminated a relation among classes constituting the framework in a step

504

.

Such framework structural modeling process of the step

403

as above-mentioned can be applied to all frameworks.

Meantime, the framework movable modeling block

34

executes a movable modeling of the framework by using results of the analysis information writing block

31

and the framework identifying block

32

, in a step

404

.

With reference to

FIG. 5

b,

the framework movable modeling process of the step

404

is provided in detail as follows.

First, messages of the sequence diagram mapped with events provided within the use case events flow, and a flow of messages, are distinguished in a step

511

, and objects related with the distinguished message flow are discriminated in a step

512

.

Next, classes of the framework mapped with the discriminated objects are identified in a step

513

. In such identifying process, the classes of the framework extracted in the structural modeling process can be utilized.

Thereafter, message flows among the distinguished classes within the framework are identified in a step

514

and the identified message flows become control flows of the framework.

Then, methods as start points of control flows are discriminated in a step

515

and such discriminated methods become interfaces of the framework.

Finally, results from the structural and movable modeling processes are utilized as analysis information necessary for embodying the framework in the framework analysis information processing block

35

.

In accordance with the present invention, as aforementioned, the framework is modelled structurally and movably by using the analysis information using the UML, to thereby easily obtain information necessary for an embodiment of the framework.

That is, in the above-mentioned invention it is provided analysis information necessary for embodying frameworks by modeling the framework structurally and movably through the analysis information generated via a use of the UML, further many advantages in the aspects of a software reuse and its maintenance-repair are provided when the framework embodied by such analysis information is utilized as a substructure in developing software.

Although the invention has been shown and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.