JP2013196354A - Class diagram creation device and class diagram creation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To create a class diagram which is recognizable at a glance by simply displaying an upper class having a succeeding relation with a class under consideration and association owned by the upper class.SOLUTION: A class diagram creation device 1 includes: input means (input/output unit 20) for acquiring information input by a user from an input device 3; and screen display processing means (screen display processing unit 11) for, through the input means, acquiring information indicating whether to display a succeeding relation, setting display/non-display information on the basis of the acquired information, and displaying/non-displaying association determined to be a non-succeeding relation by referring to succeeding relation information on a display screen on the basis of the setting of the set display/non-display information to create a class diagram.

Description

  The present invention relates to a technique for creating a class diagram used for object-oriented software development.

  In recent software development, an object-oriented development method has been widely adopted. In particular, in development using Java (registered trademark), a class diagram based on UML (Unified Modeling Language) (registered trademark) is often used. Under these trends, more and more software development efficiency has been achieved. Specifically, as a means to reuse existing software assets, it has been increasingly developed by inheriting existing classes. . The ability to develop by inheriting this existing class is widely known as a merit obtained by performing object-oriented development.

  Here, the “class” defines the characteristics (attributes and operations) of the object, and is represented by a rectangle in the class diagram defined by UML. “Inheritance” means that a related class takes over the characteristics (attributes, operations) of a certain class. When the relationship between the class “A” and the class “B” is ““ A ”is a“ B ””, that is, “A is“ B ””, the class “A” "Is a lower class of class" B ", and class" B "is an upper class of class" A ". The “lower class” may hereinafter be referred to as “subclass” or “child class”, and the “higher class” may hereinafter be referred to as “super class” or “parent class”. . Inheritance relationships (is a relationships) are, in principle, indicated by arrows with white triangles (Δ) in a conventional class diagram, and the tip of an arrow with white triangles (Δ) indicates a higher class.

FIG. 16 is a diagram showing an example of displaying the relationship of inheritance relations in a class diagram in the prior art. FIG. 16A shows the relationship of the base inheritance relationship, and FIG. 16B pays attention to the “LogicalResource” class among the classes shown in FIG. 16A, and uses the tree menu. The example which displayed the relationship of the inheritance relationship is shown.
In the example of FIG. 16A, only seven inheritance-related classes are described. However, in actual software development, display of inheritance relations of many classes that cannot be displayed on one screen (one page). It is often necessary. In addition, in the class diagram, associations (such as “association”, “aggregation”, “composition”, etc. in UML) indicating the interrelationship between classes other than inheritance are also displayed. More complicated. Therefore, when the class diagram user wants to track the inheritance relationship of the class of interest, the task of tracing the inheritance relationship across multiple screens (multiple pages) while distinguishing the relationship of the inheritance relationship from the relationship other than inheritance It was a burden on users.

In order to solve this problem, a method using the tree menu shown in FIG. 16B has been proposed (see Non-Patent Document 1). FIG. 16B illustrates which class of “LogicalResource” is connected to which upper class, further its upper class, which subclass, and its subclass in an inheritance relationship.
In FIG. 16B, “is a subclass of” means “class“ A ”is inherited as a lower (sub) class of class“ B ”when“ A ”is a subclass of“ B ”. It means a relationship. Also, “is a superclass of” means that when “A” is a superclass of “B”, the class “A” is an inheritance relationship as an upper (super) class of the class “B”. .

Sparx Systems Pty Ltd., “Traceability inside Enterprise Architect,” [online], [March 14, 2012 search], Internet <http://www.sparxsystems.com/resources/demos/Traceability/Traceability_Impact.htm>

However, in the class diagram display using the tree menu shown in FIG. 16B, when the relationship of inheritance is followed on the display screen (line of sight), for example, when a higher class is followed from the class of “LogicalResource” However, the line of sight moves to the lower right according to the tree, and the line of sight also moves to the lower right according to the tree even when following a lower class. Further, when looking at the upper class from the lowest “TerminationPoint”, first, the line of sight moves to the upper left according to the tree, and the line of sight moves from the “LogicalResource” class to the lower right according to the tree. In other words, even when following the upper class, the line of sight moves to the right side and the line of sight moves to the left side, and it is difficult to understand the upper and lower levels of the inheritance relationship.
Moreover, in development using an actual class diagram, as described above, the number of classes (nodes) increases, and the relationship indicating the interrelationship between classes other than inheritance is also displayed. This makes it difficult to understand the upper and lower levels of inheritance.
In the present embodiment, on the class diagram, the relationship between the classes expressed in a linear manner (the relationship between the classes linearly) will be described as “related”.

  Of course, the person who created the existing class will follow the way he perceived the class and his / her relationship expressed in the class diagram even in a class diagram composed of many classes and the relationships between the classes. The class diagram can be read without any problems because it understands well including the order. On the other hand, those who are in a position to reuse the class diagram must follow a very complex class. For example, when an instance of a lower class is created, in order to know what attributes, operations, and associations the instance has, the attributes, operations, and List the associations (connected as lines). This is very difficult to understand intuitively for class diagram reusers.

  The present invention has been made in view of such a background, and the present invention can be easily understood by simply displaying the upper class having an inheritance relationship with the class of interest and the relationship of the upper class. An object is to provide a class diagram creation device and a class diagram creation program.

  In order to solve the above-described problem, the invention according to claim 1 displays a plurality of classes constituting a class diagram used in object-oriented software development and a relation indicating a correlation between the classes on a display device. A class diagram creation device that, for each of the associations set between the classes, whether or not the association is an inheritance relationship indicating a relationship between a higher class and a lower class that inherits the characteristics of the higher class Storage means for storing inheritance relationship information indicating whether or not to display the association on the display device, and input for acquiring information input by the user from the input device Information on whether or not to display the inheritance relationship via the input means and the input means, set the display / non-display information based on the acquired information, and Screen display processing means for creating the class diagram by referring to the information and displaying or hiding the relationship, which is determined not to be an inheritance relationship, on the display screen based on the setting of the display / non-display information And a class diagram creating apparatus characterized by comprising:

  By doing in this way, the class diagram creating apparatus can leave only the relations of the inheritance relation and hide the relations other than the inheritance relation. Therefore, a user who wants to reuse the class diagram can grasp the inheritance relationship at a glance.

  According to a second aspect of the present invention, the screen display processing unit obtains information on a class selected from the plurality of classes by the user via the input unit, and the selected class is displayed. The class diagram creation device according to claim 1, wherein the class diagram is created by arranging the lower class so that the lower class is included in the higher class corresponding to the lower class. .

  By doing in this way, the class diagram creation device can create a class diagram by sequentially including the lower class selected by the user in the higher class for the higher class having the inheritance relationship. Therefore, it is possible to display so that the contents of the upper class having an inheritance relationship with the lower class can be grasped at a glance.

  According to a third aspect of the present invention, the screen display processing means obtains information on a class selected from the plurality of classes by the user via the input means, and the selected class is The lower class, the upper class corresponding to the lower class is arranged so as to include the lower class concentrically with the lower class as a center, and the selected class and the arranged higher class 2. The class diagram creation device according to claim 1, wherein the class diagram is created by arranging associations that are not inheritance relationships around the concentrically arranged positions.

  By doing so, the class diagram creation device displays the upper class of the class selected by the user in a concentric manner, and arranges the relations other than the inheritance relationship of each class around it. Can be displayed. Therefore, it is possible to understand at a glance the relations of non-inheritance relations of each class while allowing the contents of the upper class in the inheritance relation to be understood at a glance.

  The invention according to claim 4 is a class diagram creation program for causing a computer to function as each means constituting the class diagram creation device according to any one of claims 1 to 3.

  By doing in this way, a computer can be functioned as each means which comprises the class diagram creation apparatus of any one of Claim 1 thru | or 3.

  According to the present invention, there is provided a class diagram creation device and a class diagram creation program for simply displaying a high-level class that has an inheritance relationship with a class of interest and a relationship that the high-level class has in a simple manner so that it can be understood at a glance. Can be provided.

It is a functional block diagram which shows the structural example of the class diagram creation apparatus concerning this embodiment. It is a figure which shows an example of the data structure of the class information which concerns on this embodiment. It is a figure which shows an example of a data structure of the related database which concerns on this embodiment. It is a figure which shows the example which the class diagram creation apparatus concerning this embodiment displayed the class diagram of an initial state. It is a figure which shows the example in which the related display / non-display process part which concerns on this embodiment displayed the pop-up menu. FIG. 10 is an example of a class diagram in which a screen display processing unit (related display / non-display processing unit) according to the present embodiment displays only related relationships. It is a class figure of the initial state which displayed the relation only of the inheritance relation which the screen display processing part concerning this embodiment created. It is a figure which shows the example which the screen display process part (class inclusion display process part) concerning this embodiment displayed the pop-up menu. It is a figure which shows the example in which the screen display process part which concerns on this embodiment makes a subclass which a user pays attention include in a higher class one level, and also displays relations other than inheritance relations, and creates a class diagram. . The screen display processing part (class inclusion display processing part) which concerns on this embodiment is a figure which shows the example of the class figure which included the subclass of the class with inheritance relation in a higher class, and did not display the relations other than inheritance relation. is there. It is a figure which shows the example which the screen display process part (related display / non-display process part) which concerns on this embodiment displayed the pop-up menu. An example in which the screen display processing unit according to the present embodiment creates a class diagram by allowing a user to select a relationship other than the inheritance relationship after including the subclass that the user is interested in in the upper class one level above. FIG. It is a figure which shows the example which the screen display process part (related display / non-display process part) which concerns on this embodiment displayed the pop-up menu. It is a figure which shows the example which the screen display process part (related radial display process part) which concerns on this embodiment displayed the pop-up menu on a display apparatus. The screen display processing unit (related radial display processing unit) according to the present embodiment sequentially displays the upper classes of the class that the user is interested in concentrically, and further displays associations other than the inheritance relationship possessed by each class. It is a figure which shows the example of the class diagram which arrange | positioned radially (around) and displayed the related class. It is the figure which showed the example which displays the relationship of the inheritance relationship in a prior art with a class diagram.

  Next, a mode for carrying out the present invention (hereinafter referred to as “the present embodiment”) will be described in detail with reference to the drawings as appropriate.

<Premise>
First, the premise applied to this embodiment is demonstrated.
The class diagram creation device 1 and the class diagram creation program realized in the present embodiment exhibit the above-described effects of the present invention when the following assumptions are satisfied.

[Premise 1] There is no multiple inheritance (the child class has an inheritance relationship with two or more parent classes).
[Assumption 2] In a class diagram to be reused, there are many relations that are important, such as relations between root classes, or relations between relatively higher classes located immediately below the root class.

  [Premise 1] means that there is one upper (parent) class of the sub (child) class. In actual software development, in order to avoid complexity, it is generally based on the fact that there are often no multiple inheritances. When this [Premise 1] is satisfied, if one class is determined, it is guaranteed that one class (root class) that is an ancestor (top level) of the inheritance relationship is determined.

  [Premise 2] is that the creator of an existing class repeatedly defines the basic and important relationships among the higher-level classes that are to be inherited and reused by subclasses. It comes from being able to reuse associations.

  When reusing a class diagram that satisfies [Premise 1] and [Premise 2], class diagram creation processing by the class diagram creation device 1 and the class diagram creation program according to the present embodiment is realized.

<Overview>
Next, an outline of a class diagram created by the class diagram creation device 1 according to the present embodiment will be described.

  As described above, the class diagram creating apparatus 1 can easily understand the upper class that has an inheritance relationship with the class of interest and the relationship (the relationship other than the inheritance relationship) possessed by the upper class. Therefore, any one of the three display functions of (1) related display / non-display function, (2) class inclusion display function, (3) related radial display function, or a combination thereof is used. To display the screen.

(1) The relation display / non-display function is as shown in FIG. 6 (details will be described later), as shown in FIG. 6 (details will be described later), as shown in FIG. 4 (details will be described later). This is a function that hides relationships other than the inheritance relationship and displays only the inheritance relationship.
(2) The class inclusion display function is a function for displaying the inheritance relationship shown in the class diagram with the subclass included in the upper class (see FIG. 8B described later).
(3) The related radial display function displays the upper class of the class of interest on the class diagram in a concentric order, and further arranges the relations other than the inheritance relationship of each class in a radial (surrounding) manner. This is a function for displaying related classes (see FIG. 15 described later).
Hereinafter, the configuration of the class diagram creation device 1 will be described in detail.

<Configuration of class diagram creation device>
FIG. 1 is a functional block diagram illustrating a configuration example of a class diagram creation device 1 according to the present embodiment.
The class diagram creation device 1 is a device that performs control to display a class diagram on the display device 2 based on instruction information from a user through the input device 3.
Here, the input device 3 includes, for example, a mouse, a keyboard, a touch panel, and the like. Further, the display device 2 includes a liquid crystal display or the like.
The class diagram creating apparatus 1 includes a control unit 10, an input / output unit 20 (input unit), a memory unit 30, and a storage unit 40 (storage unit).

  The control unit 10 is responsible for overall display control for displaying a class diagram on the display device 2 based on the input information input from the input device 3, and includes a screen display processing unit 11 (screen display processing means) and input / output information processing. Part 12.

The screen display processing unit 11 (screen display processing means) controls the overall creation of the class diagram, and includes a related display / non-display processing unit 111, a class inclusion display processing unit 112, and a related radial display processing unit 113. Consists of.
The screen display processing unit 11 is a class for displaying each class in the class diagram based on the class information 100 (see FIG. 2 described later) and the related database 200 (see FIG. 3 described later) stored in the storage unit 40. Information 100 and related information for displaying the relationship between classes (related information (record information) for each related ID 201 (see FIG. 3) stored in the related database 200) are read. Then, the screen display processing unit 11 creates a class diagram under the control of at least one processing unit of the related display / non-display processing unit 111, the class inclusion display processing unit 112, and the related radial display processing unit 113.

FIG. 2 is a diagram illustrating an example of a data configuration of the class information 100 according to the present embodiment.
The class information 100 is information stored for each class, and includes a class ID (Identification) 101, a class name 102, class related information 103, and other information (such as display position information) 104.

  Class ID 101 stores unique information for identifying each class. For example, “A” is stored as the class ID 101. The class name 102 stores the name of the class (class name). The class related information 103 stores a related ID (related ID 201 in FIG. 3) of the class (connected as a line). The other information 104 stores the shape of the class on the screen (for example, a quadrangle, etc.), position information on the screen (for example, coordinate information of four points if a quadrangle), and the like.

FIG. 3 is a diagram illustrating an example of a data configuration of the related database 200 according to the present embodiment.
In this relation database 200, from 202, to 203, inheritance relation 204, display / non-display 205, and other information (display position information, etc.) are associated with the relation ID 201, which is a unique number assigned to each relation. Information including 206 is stored. The information for one record for each related ID 201 is referred to as related information.

  If the relation is an inheritance relationship, the class 202 of the higher class (parent class) (class ID 101 in FIG. 2) is stored in the from 202, and the class ID 101 of the lower class (child class) is stored in the to 203. Is stored. For example, if the relationship is “aggregation”, the class ID 101 of the class representing the whole is stored in the from 202, and the class ID 101 of the class representing the part is stored in the to 203. When the relationship has a direction as indicated by an arrow, the class ID 101 of the association source class is stored in the from 202, and the class ID 101 of the association destination class is stored in the to 203. If there is no directionality in the relation, there is a relation in both directions, or the directionality is unknown, either one of the class IDs 101 corresponding to the classes 202 and to203 is stored, and information on the directionality is stored. (For example, there is a relationship in both directions) is stored in the other information 206.

  In the inheritance relationship 204, whether or not there is an inheritance relationship between the related classes is registered. “Yes” is stored when there is an inheritance relationship, and “No” is stored when there is no inheritance relationship, that is, when the relationship is other than inheritance.

  The display / non-display 205 stores whether or not to display the relationship on the screen of the display device 2.

  Other information (display position information, etc.) 206 includes a related shape, for example, “inherit”, a white triangle (Δ) arrow, and “aggregation”, a class indicating the whole. A line with a diamond (♦) on the side is registered. Further, position information on the screen for displaying the relationship (for example, coordinate information of a connection point between the line indicating the relationship and the class) and the like are stored. Furthermore, a multiplicity (a “multiplicity” defined by UML) that is a numerical relationship between classes with associations may be stored and displayed together with the associations between the classes.

  Returning to FIG. 1, the relation display / non-display processing unit 111 hides the relation other than the inheritance relation from the class diagram (for example, see FIG. 4) in which the inheritance relation and the relation other than the inheritance relation are displayed. Only the inheritance relationship is displayed (see FIG. 6). Further, the relation display / non-display processing unit 111 performs a process of displaying a relation other than the inheritance relation of the class selected by the user on the screen (FIG. 6) on which only the relation of the inheritance relation is displayed (for details). (See FIG. 12 to be described later).

  The class inclusion display processing unit 112 displays the inheritance relationship shown in the class diagram with the subclass included in the upper class (see FIG. 8B). That is, the class inclusion display processing unit 112 displays the upper class so as to visually include the subclass.

  The related radial display processing unit 113 sequentially displays the upper classes of the class of interest on the class diagram in a concentric manner, and further arranges a relationship other than the inheritance relationship of each class in a radial manner (around). Related classes are displayed (see FIG. 15).

  The input / output information processing unit 12 delivers input information acquired from the input device 3 via the input / output unit 20 to the screen display processing unit 11, and outputs information from the screen display processing unit 11 via the input / output unit 20. To the display device 2.

  The input / output unit 20 (input unit) receives instruction information (selection information) related to processing of the control unit 10 from a mouse, a keyboard, a touch panel, or the like that is the input device 3. In addition, information related to the class diagram generated by the control unit 10 is output to the display device 2. The input / output unit 20 includes an input interface and an output interface.

  The memory unit 30 includes storage means such as a RAM (Random Access Memory), and temporarily stores information necessary for the processing of the control unit 10.

The storage unit 40 (storage means) stores the class information 100 (see FIG. 2) and the related database 200 (see FIG. 3). The storage unit 40 includes storage means such as a hard disk and a flash memory, and stores a program (class diagram creation program) for performing processing of the control unit 10 and the like.
The function of the control unit 10 is realized by, for example, a CPU (Central Processing Unit) developing and executing a program (class diagram creation program) stored in the storage unit 40 of the class diagram creation device 1 in the memory unit 30. Is done.

<Class diagram display>
Next, the class diagram created by the class diagram creation device 1 according to the present embodiment and displayed on the display device 2 will be described in detail.

≪Related display / non-display function≫
First, class diagram display by the related display / non-display processing unit 111 of the class diagram creation apparatus 1 will be described with reference to FIGS.

  When the class diagram creation device 1 is activated, the screen display processing unit 11 of the class diagram creation device 1 reads the class information 100 of all classes to be displayed in the class diagram from the class information 100 (FIG. 2). Then, the screen display processing unit 11 refers to the class related information 103 of the class information 100, acquires related related information stretched between classes from the related database 200 (FIG. 3), and creates a class diagram. It is assumed that all the display / non-display data 205 of the related database 200 is “display” as an initial value.

  FIG. 4 is a diagram illustrating an example in which the class diagram creation device 1 displays the class diagram in the initial state on the display device 2. In FIG. 4, the inheritance relationship indicated by the white triangle (Δ) arrow and the relationship other than the inheritance relationship are displayed together.

  Here, for example, when the user right-clicks (predetermined operation with a mouse or the like) at a place other than the position where the class is displayed on the screen, the screen display processing unit 11 (relevant display) of the class diagram creating apparatus 1 The / non-display processing unit 111) displays “Do not display associations other than inheritance” as a pop-up menu (see FIG. 5).

Then, when the user selects the pop-up menu “Do not display associations other than inheritance” by clicking or the like, the screen display processing unit 11 (related display / non-display processing unit 111) Of the data in the display / non-display 205 of the database 200, all the data having the inheritance relationship 204 of “No” are changed to “non-display”.
Subsequently, the screen display processing unit 11 (related display / non-display processing unit 111) creates a new class diagram (FIG. 6) based on the changed related database 200.

FIG. 6 is a diagram illustrating an example in which the class diagram creating apparatus 1 creates a class diagram by displaying only the association relationship.
In this way, by leaving only the relationships of inheritance relationships and hiding all of the relationships other than the inheritance relationships all together, users who want to reuse class diagrams can grasp the inheritance relationships at a glance. .

≪Class inclusion display function≫
Next, class diagram display by the class inclusion display processing unit 112 of the class diagram creation apparatus 1 will be described with reference to FIGS. 7 and 8. FIG.

  7 and 8 show that the class diagram creation device 1 (class inclusion display processing unit 112) creates a class diagram by sequentially including subclasses in higher classes for classes having an inheritance relationship, and displays them on the display device 2. It is a figure which shows the example.

  First, when the class diagram creation device 1 is activated, the screen display processing unit 11 of the class diagram creation device 1 reads the class information 100 of all classes to be displayed in the class diagram from the class information 100 (FIG. 2). Then, the screen display processing unit 11 refers to the class related information 103 of the class information 100, acquires related related information stretched between classes from the related database 200 (FIG. 3), and creates a class diagram. Here, regarding the data of the display / non-display 205 of the related database 200, it is assumed here that all the data whose inheritance relation 204 is “No” is “non-display”. By doing so, a class diagram in which only the relationship of the inheritance relationship is displayed as shown in FIG. 7 is created.

  Here, for example, when the user selects an arbitrary subclass on the screen ("subsubclass X" in FIG. 7) and right-clicks at the position where the selected subclass is displayed, As shown in FIG. 8A, the screen display processing unit 11 (class inclusion display processing unit 112) of the diagram creating apparatus 1 displays “include subclass in higher class” as a pop-up menu.

  When the user selects the pop-up menu “include subclass in higher class” by an operation such as clicking with the mouse, the screen display processing unit 11 (class inclusion display processing unit 112) displays the related database 200. , The class of the subclass selected by the user ("subsubclass X" in FIG. 8A) refers to the from 202 of the related ID 201 stored in to203, and is higher than the subclass by one. Get the class ID 101 of the class. Then, the screen display processing unit 11 (class inclusion display processing unit 112) refers to the “from” 202 of the related ID 201 stored in “to” 203 for the acquired class ID 101, and further acquires the class ID of the upper class. By repeating this process, the screen display processing unit 11 (class inclusion display processing unit 112) sequentially specifies the upper class of the subclass selected by the user.

  Subsequently, the screen display processing unit 11 (class inclusion display processing unit 112) refers to the subclass selected by the user and the class information 100 of each identified upper class, and displays the display position information included in the other information 104. , The subclass is reset so that it is sequentially included in the upper class. Then, the screen display processing unit 11 (class inclusion display processing unit 112) converts the subclass selected by the user ("subsubclass X" in FIG. 8A) as shown in FIG. 8B. Create as a class diagram sequentially included in the class.

  As shown in FIG. 8B, the class diagram creating apparatus 1 creates subclasses (here, subclasses (here, "Sub-subclass X") can be displayed so that the contents of the upper class having an inheritance relationship can be understood at a glance.

(Class diagram creation process combining the related display / non-display function and the class inclusion display function)
Here, a class diagram creation process performed by combining the related display / non-display function (related display / non-display processing unit 111) and the class inclusion display function (class inclusion display processing unit 112) of the class diagram creation apparatus 1 will be described. .

(First example)
FIG. 9 shows a class diagram in which the class diagram creation device 1 (screen display processing unit 11) includes a subclass noted by the user in the upper class one level higher and further displays a relationship other than the inheritance relationship. It is a figure which shows the example to produce.

  First, when the class diagram creation device 1 is activated, the screen display processing unit 11 of the class diagram creation device 1 reads the class information 100 of all classes to be displayed in the class diagram from the class information 100 (FIG. 2). Then, the screen display processing unit 11 refers to the class related information 103 of the class information 100, acquires related related information stretched between classes from the related database 200 (FIG. 3), and creates a class diagram. Here, regarding the data of the display / non-display 205 of the related database 200, it is assumed here that all the data whose inheritance relationship 204 is “No” is “non-display”. By doing so, a class diagram in which only the relationship of the inheritance relationship is displayed as shown in FIG. 9A is created. FIG. 9A shows an example of a class diagram in which there are two classes (root classes) that are ancestors (topmost levels) of the inheritance relationship. The fact that there are two root classes is not multiple inheritance (a child class has an inheritance relationship with two or more parent classes), and therefore satisfies [Premise 1].

  Here, for example, the user selects a plurality of subclasses on the screen (in FIG. 9A, “subsubclass LX” to “subsubclass LU”, “subsubclass RX” to “subsubclass RU”). When one of the selected subclasses is right-clicked at the displayed position, the screen display processing unit 11 of the class diagram creating apparatus 1 displays “a subclass one higher class above” as a pop-up menu. And display the relations of the higher class ”.

  Then, when the user selects the pop-up menu “click to include the subclass in the upper class one level higher and display the relation of the upper class” by clicking or the like, the screen display processing unit 11 ( The class inclusion display processing unit 112) refers to the related database 200, and selects the subclass selected by the user ("subsubclass LX" to "subsubclass LU", "subsubclass RX" to "sub" in FIG. 9A). The class of the subclass RU ") is referred to the from 202 of the related ID 201 stored in the to 203, and the class ID 101 of the higher class one level above the subclass is obtained. In FIG. 9A, subclass LA, subclass LB, subclass RA, and subclass RB are extracted as the upper class one level above.

  Then, the screen display processing unit 11 (class inclusion display processing unit 112) refers to the subclass selected by the user and the class information 100 of each identified upper class, and displays the display position information included in the other information 104, Reset so that the subclass is included in the upper class.

  Next, the screen display processing unit 11 (relationship display / non-display processing unit 111) refers to the from 202 and to203 of the relationship database 200 for the relationship (relation other than the inheritance relationship) that connects the identified upper classes. Extract by Here, it is assumed that a relation (a relation other than the inheritance relation) is extracted between the upper class between the subclass LB and the subclass RA.

  Subsequently, the screen display processing unit 11 (related display / non-display processing unit 111) changes the display / non-display 205 of the extracted related database 200 to “display”.

  Then, the screen display processing unit 11 creates a new class diagram as shown in FIG. 9B based on the changed class information 100 and the related database 200.

  By doing so, the class diagram creation device 1 includes the subclasses that the user is interested in in the upper class so that the contents of the upper class in the inheritance relationship can be understood at a glance, and then the upper class Can be displayed (associations other than inheritance relationships).

(Second example)
Here, in the first example, the screen display processing unit 11 of the class diagram creating apparatus 1 performs both the process of including the subclass in the upper class one level above and the process of displaying the relation of the upper class. After the above, a new class diagram was created. In the second example, first, the process of inclusion in the upper class one level above is displayed, and a new class diagram is displayed, and then the process of displaying the relationship of the upper class (association other than the inheritance relationship) is used. To be executed according to the selection of the person. This will be specifically described below.

  FIG. 10 shows an example of a class diagram in which a subclass of a class having an inheritance relationship is included in a higher class by the processing of the class inclusion display processing unit 112 of the class diagram creating apparatus 1 and a relationship other than the inheritance relationship is hidden. ing. In the example of FIG. 10, two upper classes (“UsageSpecification” and “Usage”) are displayed.

  On this display screen, for example, the user selects one of a plurality of upper classes on the screen (for example, “UsageSpecification”), and right-clicks at the position where the selected upper class is displayed. Then, the screen display processing unit 11 (related display / non-display processing unit 111) of the class diagram creating apparatus 1 displays “display related” as a pop-up menu as shown in FIG.

  When the user selects the pop-up menu “display related” screen by clicking or the like, the screen display processing unit 11 (related display / non-display processing unit 111) refers to the related database 200. Then, the related ID 201 in which the class of the higher class (“UsageSpecification” in FIG. 11) selected by the user is stored in the from 202 or to 203 is extracted.

Subsequently, the screen display processing unit 11 (related display / non-display processing unit 111) changes the data of the display / non-display 205 of the extracted related database 200 of the related ID 201 to “display”.
Then, the screen display processing unit 11 (related display / non-display processing unit 111) creates a new class diagram as shown in FIG. 12 based on the changed related database 200.

  Note that when the screen display processing unit 11 (related display / non-display processing unit 111) displays “display related” as a pop-up menu, the screen display processing unit 11 refers to the related database 200 and the user The class of the selected higher class (“UsageSpecification” in FIG. 10) extracts the related ID 201 stored in the from 202 or to 203, and the extracted related destination (“Usage” in this case) is extracted as shown in FIG. The class diagram as shown in FIG. 12 may be displayed by explicitly (when a plurality of classes are extracted, explicitly indicate a plurality of classes), allowing the user to select a related class to be displayed.

≪Related radial display function≫
Next, a class diagram created by the related radial display processing unit 113 of the class diagram creation device 1 will be described with reference to FIGS. 14 and 15. The related radial display processing unit 113 of the class diagram creating apparatus 1 sequentially displays the upper classes of the class focused on the class diagram in a concentric manner, and further displays a relationship other than the inheritance relationship of each class in a radial manner ( A class diagram is created by displaying related classes by placing them around.

  In the class diagram in which only the inheritance relationship shown in FIG. 7 is displayed, the screen display processing unit 11 (related radial display processing unit 113) is, for example, an arbitrary subclass (here, a user) on the screen. , “Sub-subclass X” in FIG. 7 is selected, and when the selected subclass is right-clicked at the displayed position, as shown in FIG. Show all associations.

  The screen display processing unit 11 performs processing by the related radial display processing unit 113 and the class inclusion display processing unit 112 in parallel, and the user can select any one subclass on the screen (here, “sub When “subclass X”) is selected and right-clicked at the position where the selected subclass is displayed, the “include subclass in higher class” pop-up menu shown in FIG. 8A and the “subclass X” shown in FIG. Both of the subclasses are included in the upper class and all associations are displayed may be displayed so as to be selectable.

  When the user selects the screen of the pop-up menu “display all the relations by including the subclass in the upper class” by clicking or the like, the screen display processing unit 11 (related radial display processing unit) 113) refers to the related database 200, refers to the from 202 of the related ID 201 in which the class of the subclass selected by the user (“sub-subclass X” in FIG. 14) is stored in the to 203, and selects one of the subclasses. The class ID 101 of the upper class is acquired. Then, the screen display processing unit 11 (related radial display processing unit 113) refers to the from 202 of the related ID 201 in which the acquired class ID 101 is stored in to 203, and further acquires the class ID of the higher class. By repeating this process, the screen display processing unit 11 (related radial display processing unit 113) sequentially specifies the upper class of the subclass selected by the user. Here, the screen display processing unit 11 (related radial display processing unit 113) specifies the subclass A as the higher class and the higher class J as the higher class.

  Subsequently, the screen display processing unit 11 (related radial display processing unit 113) displays the subclass selected by the user ("subsubclass X" in FIG. 14) and each identified upper class ("subclass A", "upper class"). J ”) class information 100 is referred to, and the display position information included in the other information 104 is reset so that the subclass includes the upper class sequentially and concentrically.

  Next, the screen display processing unit 11 (related radial display processing unit 113) refers to the related database 200, and the related upper class ("subclass A", "upper class J") is stored in the from 202 or to203. ID 201 is extracted. Then, the screen display processing unit 11 (related radial display processing unit 113) extracts a class connected by the identified higher class and the relationship of the extracted relationship ID 201 (relation other than the inheritance relationship).

Subsequently, the screen display processing unit 11 (related radial display processing unit 113) changes the data of the display / non-display 205 of the extracted related database 200 of the related ID 201 to “display”.
Then, the screen display processing unit 11 (related radial display processing unit 113) identifies the related display position information included in the other information 206 of the corresponding related ID 201 in the related database 200, and identifies the upper class (“subclass A”, It is set to a position where classes connected to “upper class J”) are arranged radially (around). Further, the screen display processing unit 11 (related radial display processing unit 113) refers to the class information 100 (FIG. 2) of the class connected by the relationship (association other than the inheritance relationship) with the identified higher class, and displays the other information 206. The display position information included is set to a position to be connected to the relation arranged radially (around).

  Then, the screen display processing unit 11 (related radial display processing unit 113) creates a new class diagram as shown in FIG. 15 based on the changed class information 100 and the related database 200.

  By doing in this way, the class diagram creation device 1 sequentially displays the upper classes of the class of interest on the class diagram by concentrically displaying them, and further, the relationships other than the inheritance relationship of each class are radially ( Place them around) to show related classes. Therefore, the subclasses that the user is interested in are included in the upper class so that the contents of the upper class in the inheritance relationship can be understood at a glance, and the relationship of the upper class (relation other than the inheritance relationship) is also glanced at. Can be understood.

  As described above, according to the class diagram creation device 1 and the class diagram creation program according to the present embodiment, the upper class that has an inheritance relationship with the class of interest and the relationship that the upper class has (the relationship other than the inheritance relationship) ) Can be displayed in a simple manner so that they can be understood at a glance. Therefore, those who are in a position to reuse the class diagram can eliminate the need to follow the relationship with the complicated class, and can recognize the inheritance relationship and the relationship other than the inheritance relationship intuitively and easily.

1 Class diagram creation device 2 Display device 3 Input device (input means)
10 Control Unit 11 Screen Display Processing Unit (Screen Display Processing Unit)
12 Input / output information processing section 20 Input / output section 30 Memory section 40 Storage section (storage means)
111 Related Display / Hide Display Processing Unit 112 Class Inclusion Display Processing Unit 113 Related Radial Display Processing Unit 100 Class Information 200 Related Database

Claims (8)

A class diagram creation device for displaying on a display device a plurality of classes constituting a class diagram used in object-oriented software development and a relationship indicating a correlation between the classes.
For each of the associations set between the classes, inheritance relationship information indicating whether the relationship is an inheritance relationship indicating that the relationship is a relationship between a higher class and a lower class that inherits the characteristics of the higher class, and Storage means for storing display / non-display information indicating whether or not to display the association on the display device;
Input means for acquiring information input by the user from the input device;
Information on whether or not to display the inheritance relationship is acquired via the input means, the display / non-display information is set based on the acquired information, and the relationship is determined by referring to the inheritance relationship information. Screen display processing means for creating or displaying the class diagram on the display screen based on the setting of the display / non-display information for an association that is not an inheritance relationship;
A class diagram creating apparatus comprising: The screen display processing means includes
Via the input means, obtaining information of a class selected from the plurality of classes by the user;
The said class is made into the said lower class, and it arrange | positions so that the said lower class may be included in the said upper class corresponding to the said lower class, and the said class diagram is created. Class diagram creation device. The screen display processing means includes
Via the input means, obtaining information of a class selected from the plurality of classes by the user;
The selected class is the lower class, the upper class corresponding to the lower class is arranged so as to include the lower class concentrically around the lower class,
The class diagram is created by arranging the non-inherited relations of the selected class and the arranged higher class around the concentrically arranged position, and creating the class diagram. Class diagram creation device.   A class diagram creation program for causing a computer to function as each means constituting the class diagram creation device according to any one of claims 1 to 3. A class diagram creation device for displaying on a display device a plurality of classes constituting a class diagram used in object-oriented software development and a relationship indicating a correlation between the classes.
Class information including a relation ID, which is a unique number of the relation possessed by the class, and information on the shape and coordinates on the screen of the display device of the class is stored for each class and set between the classes. Inheritance relation information indicating whether or not the relation is an inheritance relation indicating that the relation is a relation between a higher class and a lower class that inherits the characteristics of the higher class, for each relation ID of the relation, Storage means for storing display / non-display information indicating whether to display on the display device, and related information including information on a shape and coordinates on the screen of the related display device;
Input means for acquiring information input by the user from the input device;
The class information of the class to be displayed on the display device is acquired, the related information is acquired using the related ID of the class stored in the class information, and the class information and the related information are acquired. Screen display processing means for determining the class and the related shape and display position to create the class diagram and displaying the class diagram on the display device,
The screen display processing means includes
Information on whether to display the inheritance relationship is acquired via the input means, and the display / non-display information of the related information is set based on the acquired information, and the inheritance relationship information is referred to Then, the class diagram creation device characterized in that the relation that is not an inheritance relation is displayed or hidden on the display screen based on the setting of the display / non-display information. The related information further stores the class corresponding to the lower class and the class corresponding to the upper class in association with each other when the inheritance relation is set in the inheritance relation information. And
The screen display processing means includes
Via the input means, obtaining information of a class selected from the plurality of classes by the user;
The selected class is set as the lower class, the higher class corresponding to the lower class is identified with reference to the related information, and the lower class is included in the identified higher class, The class diagram creating apparatus according to claim 5, wherein the class diagram is created. In the related information, when the inheritance relationship information is set to have the inheritance relationship, the class corresponding to the lower class and the class corresponding to the upper class are stored in association with each other. And
The screen display processing means includes
Via the input means, obtaining information of a class selected from the plurality of classes by the user;
The selected class is set as the lower class, the related information is referred to, the upper class corresponding to the lower class is specified, and further, the specified upper class is referred to the related information, the Repeat the process of specifying the higher class as the lower class and the higher class until the processed inheritance relationship disappears,
The selected class is included in the specified higher class, and the included higher class is included in the specified higher class, so that the higher class is sequentially centered on the selected class. Placed concentrically,
The related information of the selected class and the arranged higher class is referred to, and the association set as not having the inheritance relation in the inheritance relation information is determined as the concentricity between the selected class and the arranged upper class. The class diagram creation device according to claim 5, wherein the class diagram is created by arranging the classes that are arranged around the positions arranged in a shape, and arranging the classes to be related to the association.   A class diagram creation program for causing a computer to function as each means constituting the class diagram creation device according to any one of claims 5 to 8.

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