JPH08166876A - System development supporting method - Google Patents

Abstract

PURPOSE: To securely and facilitate system development based upon an object- oriented analytic designing method. CONSTITUTION: The plotting of diagrams (object chart A, scenario B, event trace chart C, etc.) prepared by an OMT method as one of object-oriented analytic designing methods is supported by a CASE tool and in this plotting, the link relation between diagrams is stored as relation data; and documents describing the relation among the respective diagrams are linked into hypertext structure on the basis of the relation data and when one of classes, events, execution processes, etc., in the diagrams is selected, the document described in another relative diagram is opened in the hypertext structure (S1-S6) to enable the developer to easily and securely pay attention to the behavior of the world as an object to be modeled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system development support method based on an object-oriented analysis method.

[0002]

2. Description of the Related Art In software engineering, OMT method, Booth method, Cord / Yourdon method, etc.
Various methods for object-oriented analysis and design have been proposed, and their improvement and standardization are in progress.

CASE (Computer Aided Sof) for supporting system development based on these techniques
A "tware engineering" tool has been put to practical use.

That is, an attempt has been made to perform efficient software development by using a unified tool to perform software specification creation in the upstream process and actual coating and maintenance support in the downstream process.

In addition to the above, tools such as a text editor and document creation support commonly used from upstream to downstream are prepared, and there are specific software tools according to the type of software to be developed. .

[0006]

Most of the functions of the object-oriented CASE tools currently in practical use support the drawing of the diagram proposed by the object-oriented analysis and design method, and the created diagram is implemented. There is no support to make the most of it for maintenance.

In order to carry out development by the object-oriented analysis and design method, it depends on the skill of the developer at present, and it is desirable that computer support can be obtained during the whole development process.

An object of the present invention is to provide a method for ensuring and facilitating system development based on an object-oriented analysis and design method.

[0009]

In order to solve the above-mentioned problems, the present invention provides a system development support method in which a CASE tool supports drawing of a diagram created by an object-oriented analysis and design method. Is stored as relational data, and documents describing the relations of each diagram based on the relational data are linked to form hypertext, and when one of the class, event, execution process, etc. in the diagram is selected. , A document described in another diagram related thereto is opened to the hypertext.

[0010]

[Operation] By hyperlinking the document that describes the relationship of each diagram and linking each diagram semantically and organically, by selecting a class etc. from the diagram, it is described in other diagrams related to this. Enables automatic retrieval of existing documents so that developers can easily and easily be aware of the behavior of the world to be modeled.

[0011]

[Example] In the object-oriented analysis and design method, the real world and the system world are modeled and expressed in various diagrams. By using the classes and events, which are the central concepts for creating these diagrams, as keys, the documents that describe the diagrams are linked into hypertext. Link relationships between diagrams are saved and used as relationship data.

This example will be described using the OMT method which is one of the object-oriented analysis and design methods. The main procedure of modeling by the OMT method is as follows, and the relationship of the diagram is shown in FIG.

(1) Classes and relationships between classes are expressed in an object diagram (A in FIG. 2).

(2) Describe the behavior of the system in a scenario for each possible case (B in FIG. 2).

(3) An event trace diagram is created based on the scenario (C in FIG. 2).

(4) A state transition diagram for each class is created based on the event trace diagram (D in FIG. 2).

(5) The flow of the execution process described in the state transition diagram is expressed in the data flow diagram (E in FIG. 2).

The relationship between these diagrams is described in the object diagram of the OMT method as shown in FIG. 3, and the notation of these object diagrams expresses the meanings shown in (a) to (k) of FIG.

In this embodiment, the data structure of FIG. 3 obtained by the OMT method is made into a database and stored. Then, the document is made into hypertext based on this information, and the document in which other diagrams related to it are described can be opened from the class, event, execution process, etc. in the diagram by the mouse or the like.

This image is as shown in FIG.
Each of the document examples S1 to S6 in the figure means the following processing.

(S1) Select GO of the object diagram A
When the command is executed, a list such as scenario B related to the object diagram is displayed and the specified document is opened.

(S2) When the scenario B is selected and the GO command is executed, a list of the object diagram A, the event trace diagram C, etc. relating to the scenario is displayed and the specified document is opened.

(S3) When a class in the event trace diagram C is selected and the GO command is executed, the specified document such as the object diagram A, the event trace diagram C, the state transition diagram D, etc. for the class is opened.

(S4) When the state transition diagram D is selected and the GO command is executed, a list such as the object diagram A and the event trace diagram C relating to the class having that state is displayed, and the specified document is opened.

(S5) When an event is selected and the GO command is executed, an event trace diagram C for that event
And a list of state transition diagrams D, etc. are displayed, and the document of the specified diagram is opened.

(S6) When an execution process is selected and the GO command is executed, a list such as a state transition diagram D or a data flow diagram E relating to the execution process is displayed and the designated document is opened.

Therefore, according to the present embodiment, the document is made into hypertext from the relation of the diagram obtained by the OMT method, and the description of other diagrams related to it from the class, event, execution process, etc. in the diagram by the mouse or the like. You will be able to open the document.

As a result, by systematically linking each diagram organically, the system developer can always be aware of the behavior of the world to be modeled, and the essence of the object execution analysis and design. It is reliable and easy to carry out development and maintenance.

Further, the model validity can be checked by analyzing the link relation of each diagram.

Further, the source code of the program can be semi-automatically generated based on the link relation of each diagram.

In the embodiment, the case of utilizing the relationship of the diagram obtained by the object-oriented analysis and design method of the OMT method is shown. However, the object diagram centered on the class and the event obtained by other object-oriented analysis and design method are mainly It is possible to obtain an equivalent effect by using a diagram such as the state transition diagram.

[0032]

As described above, according to the present invention, the link relation between the diagrams created by the object-oriented analysis and design method is stored as relational data, and the document describing the relation of each diagram based on the relational data is used. Link to hypertext, and when one of the class, event, running process, etc. in the diagram is selected, open the document described in the other diagram related to this to the hypertext. As a result, developers can easily be aware of the behavior of the world to be modeled, and the development and development in line with the essence of object-oriented analysis design
It has the effect of ensuring reliable and easy maintenance.

[Brief description of drawings]

FIG. 1 is an image of a document open for a diagram according to the present invention.

FIG. 2 is a diagram showing a relationship between diagrams according to the OMT method.

FIG. 3 is a relational diagram of a diagram according to the OMT method.

FIG. 4 is a notation of an object diagram by the OMT method.

[Explanation of symbols]

 A ... Object diagram B ... Scenario C ... Event trace diagram D ... State transition diagram E ... Data flow diagram

Claims (1)

[Claims] 1. A system development support method for supporting drawing of a diagram created by an object-oriented analysis and design method with a CASE tool, wherein a link relationship between the diagrams is stored as relationship data, and based on the relationship data, each of the diagrams is saved. Documents describing the relationships are linked and made into hypertext, and when one of the classes, events, execution processes, etc. in the diagram is selected, the documents described in other diagrams related to this are described above. A system development support method characterized by opening to hypertext.