JP2004310279A - Business processing system and construction support apparatus, business processing system program, business processing system construction support program - Google Patents

Abstract

An object of the present invention is to improve productivity of application development related to a business processing system, ease of maintenance, reusability, flexibility in changing specifications, and the like.
A standard program for business processing is installed in superclasses (11 to 13), and empty subclasses (21 to 23) on which a correction program is installed at the time of correction of business processing are prepared from the beginning. The sub-classes 21 to 23 successively inheriting the method of the standard program to be implemented are sequentially executed, so that the modification program PG2 ′ implemented by customizing the business process is not mixed with the standard program PG2, and the standard program is implemented. The man-hour for customization can be greatly reduced, and the ease of version upgrade and the ease of management can be improved.
[Selection diagram] FIG.

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a business processing system and a construction support apparatus, a business processing system program, and a business processing system construction support program.
[0002]
[Prior art]
Conventionally, when developing an application program using a high-level language such as COBOL, for example, a technique called structured programming has been used. In this method, a source code of a general-purpose component that defines a processing procedure and a processing method that can be patterned is generated, and this is effectively reused as an existing program asset.
[0003]
On the other hand, in recent years, development using a method called object-oriented programming has become common. Object-oriented has a function called inheritance. By using this inheritance function to generate source code, the generated source code can be reused more easily and flexibly. Therefore, the reusability as an existing program asset is improved as compared with the source code generated by the structured programming method.
[0004]
This object-oriented programming technique is often used when developing a client-server system including a client and a server. As one form of the client server system, there is a business processing system (also referred to as an ERP (Enterprise Resource Planning) system) integrating various business operations such as order receiving processing, slip processing, product inventory management processing, and accounting processing.
[0005]
Most of recent business processing systems are implemented as Web applications. A Web application usually has a GUI (Graphical User Interface) using a Web browser. Various attempts have been made to develop a Web application having such a GUI. However, in the case of a business processing system in which the amount of data to be handled and the number of screens are enormous, reusability and flexibility in changing specifications are excellent. The MVC model is valid.
[0006]
This MVC model is functionally decomposed into three types of model elements: Model (data), View (user interface), and Controller (control unit), and implements an application by combining these. FIG. 11 is a diagram illustrating a configuration example of a conventional Web application constructed using an MVC model.
[0007]
The business processing system shown in FIG. 11 is a three-layer Web client server system having a three-layer structure of a Web layer (presentation layer), a business logic layer, and a database layer. Each layer performs a specific process.
[0008]
A Web server belonging to the Web layer includes a view for physically editing a screen and a controller for controlling an event in one screen and performing transition between screens, and controls a web browser of a client. . Further, the application server belonging to the business logic layer has a Model for controlling a series of business processes such as extracting necessary data from a database (DB) and passing it to the View according to an instruction from the Controller.
[0009]
[Problems to be solved by the invention]
In recent business processing systems, complicated specifications have been required along with the complexity of business, and applications for realizing this are large-scale. Moreover, it is desired to construct such a large-scale system in a short time. However, in the past, application development was mostly done by hand. Further, when a program is divided and created by a large number of developers, it is difficult to maintain the consistency of the entire program. As a result, there are many defective parts such as leaks and errors, and the number of operations for correcting the defective parts increases, so that there is a problem that the productivity of system development does not increase.
[0010]
Further, among tasks targeted by the task processing system, there are many tasks in which specification changes frequently occur. When the business processing system is provided to the customer as a standard package, it is necessary to customize the provided business processing system according to the customer's request. In these cases, it is desired that the business processing system can be flexibly and easily changed in response to specification changes and customer requests. However, an application generated by hand has a very complicated structure in many cases, and it takes a lot of trouble and time to find the influence range when one application is changed. Therefore, there is a problem that the efficiency of maintenance is extremely low.
[0011]
Furthermore, if the standard package of the business processing system is customized according to the customer's request, even if the original standard package is upgraded by adding or changing functions, the customer's system cannot be upgraded accordingly. Would. In order to upgrade the customer's system, it was necessary to discard the old version of the customized system, introduce a new version of the standard package, and customize it again according to the customer's request. For this reason, there has been a problem that the customer is forced to spend a large amount of money and it takes time to customize the system again.
[0012]
The present invention has been made to solve such a problem, and it is possible to improve the productivity of application development, the ease of maintenance, the reusability, the flexibility for changing specifications, and the like of a business processing system. The purpose is to be able to.
[0013]
[Means for Solving the Problems]
The business processing system of the present invention is a superclass group that implements a standard program for business processing, and a subclass that inherits each superclass, and is initially an empty subclass in which the modification program is implemented when modifying the business processing. Object storage means for storing an object instantiated by a group; and control means for controlling the sequential execution of the subclasses inherited from the methods of the standard program implemented in the superclasses. It is characterized by.
[0014]
In another aspect of the present invention, an object storage means for storing an object in which a plurality of classes implementing a business processing program are instantiated, and data defined by a value object in an XML format are transferred between the plurality of classes. And control means for performing the control.
[0015]
In another aspect of the present invention, the object storage means controls a series of business processes in units of events and executes a normalized transaction, and a domain manager which exists in business logic units and executes each business process itself. A business logic is stored, and the control means performs control so as to transfer data defined by the value object in the XML format between the domain manager and the business logic.
[0016]
In another aspect of the present invention, a conversion rule is defined by using XHTML screen design information defining a screen design relating to business processing and the XML format value object defining data to be embedded on the screen. And XSL conversion in accordance with the XSL format conversion information to generate a screen in HTML format.
[0017]
In another aspect of the present invention, for a plurality of search items used when accessing a database, an object storage means for storing a data access object including all the search items, Control means for setting a search condition for a search item actually specified by a user, dynamically generating a conditional sentence of a corresponding pattern, and performing access to the database. Features.
[0018]
According to another aspect of the present invention, a meta information storage unit that stores an event that activates a screen transition and meta information that indicates which event is to be written or read when the event information is written, Cache control means for controlling to write or read event information necessary for performing the screen transition to or from a cache memory in accordance with meta information stored in the meta information storage means when an event for initiating a transition occurs. When the event information is written by the cache control unit, the process related to the screen transition is executed in accordance with an event that has actually occurred. When the event information is read by the cache control unit, the readout is performed. Screen transition according to the event information Characterized by comprising a screen transition means for executing the processing related.
[0019]
Further, the business processing system construction support device according to the present invention, when generating a class for implementing a standard program for business processing, generates a class for implementing the standard program as a super class, and A class generation unit that generates an initially empty subclass that is a subclass that inherits a class and that is to be modified when the above-mentioned business process is modified, and that is implemented in the above-described subclass when the above-mentioned modification program is implemented. And a correction program mounting means for controlling.
[0020]
According to another aspect of the present invention, the structure of data exchanged between business processing objects based on input information from screen design means for creating and editing a screen by pasting various GUI parts on an editor screen. Value object defining means for generating definition information about the body, and a value object in an XML format for holding data of items arranged in the screen based on the value object definition information generated by the value object defining means And value object generating means for generating
[0021]
According to another aspect of the present invention, there is provided a screen definition unit for generating, based on input information from the screen design unit, definition information on one or more items included in a screen, attributes of each item, and a screen layout, Means for generating a screen design in the XHTML format based on the definition information of the screen generated by the means; screen design information in the XHTML format generated by the screen generating means; Conversion information generating means for generating conversion information in the XSL format that defines conversion rules for generating a screen in the HTML format using the value object in the XML format.
[0022]
According to another aspect of the present invention, there is provided an SQL defining means for generating definition information relating to an SQL statement in accessing a database, and an access to the database based on the definition information generated by the SQL defining means. A data access object generating means for generating a data access object including all the search items with respect to a plurality of search items used when accessing the database.
[0023]
According to another aspect of the present invention, one or more items included in a screen, each item included in the screen, based on input information from screen design means for creating and editing a screen by pasting various GUI parts on the editor screen Screen definition means for generating definition information about the attributes and screen layouts of the screen, and an event for activating a screen transition based on the design definition information of an event included in the attribute of each item defined by the screen definition means, and which event And meta information generating means for generating meta information indicating whether to perform writing or reading of the event information when the event occurs, wherein the meta information is generated when an event that activates the screen transition occurs. Used to specify whether to write or read event information required to perform the screen transition to / from the cache memory. , Characterized in that in accordance with the read event information is information made a to execute the process related to the screen transition when the reading of the event information.
[0024]
Further, a business processing system program according to the present invention is a program for causing a computer to function as each means according to any one of claims 1 to 6.
[0025]
A program for supporting construction of a business processing system according to the present invention is a program for causing a computer to function as each means according to any one of claims 7 to 11.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a business processing system according to the present embodiment. As shown in FIG. 1, a business processing system according to the present embodiment includes a client 1 corresponding to a client layer, a Web server 2 corresponding to a presentation layer and a control layer, a Web application server 3 corresponding to a domain model layer, and a database layer. It is provided with a corresponding DB server 4.
[0027]
On the client 1, a browser 1a operates, and it is possible to acquire and display various Web pages including a GUI via the Web server 2. That is, the browser 1a of the client 1 requests the Web server 2 to transmit HTML information. The Web server 2 that has received the transmission request for the HTML information makes an inquiry to the DB server 4 via the Web application server 3 and acquires necessary data corresponding to the request. Then, a Web page is constructed using the acquired data, and is returned to the browser 1a as HTML source code. The browser 1a analyzes the HTML source code received from the Web server 2, and displays information included in the source code on a screen.
[0028]
The Web server 2 operates together with the Web application server 3 and the DB server 4 in response to a request from the client 1, and provides various Web pages to the browser 1a of the requesting client 1. The Web server 2 includes a view (user interface) 2a for physically editing a screen and a controller (control unit) 2b for controlling an event in one screen and performing transition between screens. ing. The user interface 2a and the control unit 2b are activated when requested by the client 1.
[0029]
The Web application server 3 performs processing specialized for various tasks such as order receiving, slip processing, inventory management of goods, and accounting. Specifically, it performs a database search in response to a request from the Web server 2 and notifies the Web server 2 of the search result. In this way, by making the Web application server 3 that specializes in the business portion independent of the Web server 2, an environment is created in which the Web server 2 can concentrate on the window processing of the client 1.
[0030]
The present embodiment is characterized in that the Web application server 3 is divided into two layers of a domain manager 3a and a business logic 3b. The domain manager 3a controls a series of business processes for each event, and executes a normalized transaction. The normalized transaction is, for example, a process of activating the business logic 3b corresponding to the request, and can be generalized regardless of the content of the business logic.
[0031]
On the other hand, the business logic 3b exists in the business logic unit extracted in the object design, and executes each business process itself. The business logic 3b is a part created according to the actual business of the customer, and business logic specific to each customer is implemented. These domain manager 3a and business logic 3b exist as a plurality of components (parts).
[0032]
The DB server 4 performs a process of searching the database 4a in response to a request from the Web application server 3, and providing the retrieved data to the Web application server 3.
[0033]
In the configuration described above, the source code is automatically generated for the user interface 2a, the control unit 2b, and the domain manager 3a based on the design definition information. Conventionally, a model is configured by integrating the domain manager 3a and the business logic 3b (see FIG. 11), which includes business logic unique to a customer and cannot be generalized, so that the model can be automatically generated. Did not. On the other hand, in the present embodiment, the Model is divided into the domain manager 3a and the business logic 3b, so that at least the domain manager 3a can be automatically generated.
[0034]
A value object (VO) for holding data exchanged between the control unit 2b and the domain manager 3a, and a value object (VO) for holding data exchanged between the domain manager 3a and the business logic 3b ( VO) and a data access object (DAO) used when the business logic 3b accesses the database 4a are also automatically generated based on the design definition information.
[0035]
Hereinafter, the mechanism of these automatic generations will be described. FIG. 2 is a diagram illustrating a configuration example of the business processing system 100 and the construction support device 200 according to the present embodiment. In FIG. 2, portions having the same functions as the functional blocks shown in FIG. 1 are denoted by the same reference numerals.
[0036]
2, a screen editor 300 uses a keyboard and a mouse to paste various GUI parts such as various buttons, check boxes, list boxes, radio buttons, combo boxes, and text boxes on the editor screen. This is a screen design support tool that enables creation and editing of images. The screen definition unit 11 defines one or more items included in the screen, attributes (length, type, event, etc.) of each item, a screen layout, and the like. This screen design definition information is generated based on input information of the screen editor 300.
[0037]
Here, “generate” means converting input information according to a predetermined conversion rule and outputting the result. The input information includes, in addition to the data items necessary for obtaining the output information, a conversion pattern name indicating which pattern in the conversion rule is to be used for conversion. The conversion rules include a plurality of conversion patterns, and different format conversion rules are described for each conversion pattern. At the time of execution of the generate, a conversion pattern specified by the input information is searched, and the input information is converted into a predetermined format according to a conversion rule described therein. The meaning of this generate is the same in other functional blocks.
[0038]
Based on the screen layout design definition information output from the screen definition unit 11, the screen generation unit 12 performs a design of a screen, a form, or the like in an XHTML (extensible HyperText Markup Language) format corresponding to the user interface 2a. Generates a template that determines only the layout, such as whether to arrange them). The user creates a completed version by manually editing the generated screen design 2a using an HTML editor (not shown).
[0039]
XHTML is a modification of HTML (HyperText Markup Language) in conformity with the XML (extensible Markup Language) format, and has the advantages of XML, such as being able to use an arbitrary tag name and being able to directly define the hierarchical structure of data. It is possible to take advantage of.
[0040]
Based on design definition information such as an event (operation on the screen) output from the screen definition unit 11, the framework generation unit 13 determines a value object 5a and a domain manager 3a to be used in accordance with the event. Generate information. The meta information generated here is held in the framework configuring the control unit 2b. The framework 2b detects an event that occurs in one screen based on the meta information, activates the value object 5a and the domain manager 3a corresponding to the occurred event, and performs screen transition. .
[0041]
The VO definition unit 14 defines, based on input information of the screen editor 300, definition information on a data structure exchanged between the control unit (framework) 2b of the Web server 2 and the domain manager 3a of the Web application server 3. Generate. This structure is called a value object in the Java (registered trademark) world. The VO generation unit 15 is based on the design definition information of the value object output from the VO definition unit 14 and uses the XML-formatted value object 5a (data container) to hold the data of the items arranged in each screen. Generate
[0042]
The business rule design tool 400 is a business rule definition support tool that creates and edits a business flow diagram, a data flow diagram, and the like by pasting various GUI parts on an editor screen using a keyboard, a mouse, and the like. Note that the business flow diagram is a flow chart that describes the contents of processing and the flow of input / output, with the organization and business procedure as axes. The data flow diagram is a flowchart describing data used in each task and data processing (process).
[0043]
The DM definition unit 16 performs, based on the input information of the business rule design tool 400, a design definition regarding the order of calling the business logic 3b executed by the domain manager 3a and the calling logic of the business logic 3b (for example, if branch or loop). Generate information. The DM generation unit 17 generates a domain manager 3a that activates the business logic 3b for each transaction based on the design definition information output from the DM definition unit 16.
[0044]
The BL definition unit 18 generates design definition information related to data items used in the business logic 3b and their attributes based on the input information of the business rule design tool 400. The VO generation unit 19 generates an XML value object 5b for holding data input / output to / from the business logic 3b based on the design definition information output from the BL definition unit 18.
[0045]
The DB design tool 500 is a support tool for designing a table of the database 4a from an ER diagram, for example. The DB design tool 500 has a function of performing data analysis in order to achieve consistency in data item units, and designing an SQL statement for accessing the database 4a.
[0046]
The SQL definition unit 20 generates design definition information relating to a statement in an SQL (Structured Query Language) format when accessing the database 4a, based on input information of the DB design tool 500. The DAO generation unit 21 generates a DAO (Data Access Object) 6 for accessing the database 4a from the business logic 3b based on the design definition information output from the SQL definition unit 20.
[0047]
The DB definition unit 22 generates design definition information relating to a table of the database 4a based on input information of the DB design tool 500. Based on the design definition information output from the DB definition unit 22, the DDL etc. generation unit 23 creates a DDL (Data Definition Language) for creating, changing, deleting, etc., the entire table constituting the database 4a, and the DDL (Data Definition Language). Generates a Data Manipulation Language (DML) for adding, searching, updating, deleting, and the like of the record.
[0048]
The change management unit 24 registers change (correction) information of the source code of the business logic 3b and manages the change of the source code. Details of the change management will be described with reference to FIG. Here, as shown in FIG. 3A, a case is considered where, in a certain business logic 3b, three programs (objects) PG1, PG2, and PG3 are sequentially executed to process and output input data.
[0049]
When a developer writes a program, the change management unit 24 defines the written program as a superclass and automatically generates a subclass that is an empty container inherited from the superclass. That is, when the developer writes three programs PG1, PG2, and PG3 as shown in FIG. 3A, they are implemented as three superclasses 101 to 103 that are parents of the inheritance relationship. In addition, the subclasses 201 to 203 which are inherited from the superclasses 101 to 103 and become children are automatically generated.
[0050]
Then, the change management unit 24 is defined so as to perform a series of processes by sequentially executing the subclasses 201 to 203 automatically generated as described above. As described above, the change management unit 24 manages the parent-child relationship between the superclasses 101 to 103 and the subclasses 201 to 203. Since the subclasses 201 to 203 are automatically generated by the change management unit 24, there is no change in writing a program for a developer, and the trouble is not increased.
[0051]
When implemented as described above, actually, the three programs PG1, PG2, and PG3 operate with the movements indicated by the dotted arrows in FIG. That is, the subclass 201 is referred to first, but the contents remain empty here. However, the subclass 201 executes processing with reference to the parent superclass 101. As a result, the program PG1 implemented in the superclass 101 is executed, and the processing result is passed from the subclass 201 to the next subclass 202.
[0052]
Although the content of the subclass 202 is also empty, the process is executed with reference to the superclass 102 that is the parent. As a result, the program PG2 implemented in the superclass 102 is executed, and the processing result is passed to the next subclass 203. Similarly, the subclass 203 executes the program PG3 implemented in the parent superclass 103 and outputs the processing result.
[0053]
As described above, in the present embodiment, it is defined that the subclasses 201 to 203 are generated and executed from the beginning, but the contents are left empty, and the programs PG1, PG2, Implement PG3. Thus, processing can be performed in the same manner as a normal object having only a part corresponding to the superclasses 101 to 103. When the business processing system is provided to the customer as a package, the business processing system is provided in a state of being mounted as shown in FIG.
[0054]
On the other hand, when a customer who has received such a package customizes the business logic 3b according to his / her business contents or modifies the business logic 3b according to a specification change, the contents of the modification are subclasses. It is mounted on 201 to 203. For example, as shown in FIG. 3B, when modifying the standard program PG2, the modified program PG2 'is implemented in the subclass 202. At this time, the change management unit 24 controls the modification program PG2 ′ to be mounted in the subclass 202, and manages the difference between the standard program PG2 and the modification program PG2 ′.
[0055]
Also in the case of customization as shown in FIG. 3B, the movement of the program execution is the same as in the case of FIG. 3A. However, since the correction program PG2 'is written in the subclass 202, the processing of the correction program PG2' is executed for the correction part while inheriting the program PG2 mounted in the superclass 102.
[0056]
As shown in FIG. 3C, it is also possible to newly implement a program PG4 that was not initially implemented. In this case, the superclass 104 and the subclass 204 are newly added by the change management unit 24, and the additional program PG4 is implemented in the subclass 204. Superclass 104 remains empty. In this case, the subclass 204 executes the program PG4 mounted therein as it is, and outputs the processing result to the next subclass 203.
[0057]
FIG. 4 is a diagram showing a conventional customization method. Conventionally, as shown in FIG. 4A, a method of rewriting the original standard program PG2 to a modified program PG2 ". In this case, another method is performed in accordance with the modified program PG2". The programs PG1 and PG3 also need to be slightly modified. Therefore, the state of the original standard package can hardly be maintained. If such customization is performed for each customer, many programs different from the standard package will be completed. In this case, the package provider needs to manage all these programs, and the program management becomes extremely complicated.
[0058]
Further, as shown in FIG. 4B, there has been a method in which a subclass is newly defined only for the program PG2 to be modified, and the modification program PG2 'is mounted in the subclass. However, in this case, it is necessary to change the call destination from the program PG1 from the standard program PG2 to the correction program PG2 '. Further, the caller to the program PG3 also needs to be changed from the standard program PG2 to the correction program PG2 '. Therefore, the interface portions of the programs PG1 and PG3 have to be corrected together.
[0059]
On the other hand, according to the embodiment shown in FIG. 3, there is no need to modify the programs PG1, PG2, and PG3 provided as standard packages at all. That is, for example, even when the program PG2 is to be modified, the difference is utilized simply by writing the modified program PG2 'in the subclass 202 without changing the standard program PG2 of the superclass 102. Even when the correction program PG2 'is written in the subclass 202, the subclass 202 is originally set so as to be called, so that there is no need to make any correction to the programs PG1 and PG3 of the superclasses 101 and 103.
[0060]
As a result, the man-hour for customizing the standard package program can be significantly reduced. Also, in the case where there are many customers to whom the package is provided and each customer performs different customizations, the package provider only needs to basically manage only the standard package program, as shown in FIG. It is no longer necessary to manage programs changed for each customer by a simple method. Therefore, program management becomes very easy.
[0061]
Further, when the standard package itself is upgraded, the customer can use the modified programs of the subclasses 201 to 203 as they are and replace only the standard programs of the superclasses 101 to 103. In this case, the existing correction program can be operated while the subclasses 201 to 203 take over the method of the upgraded standard program. Therefore, there is also a merit that the version can be easily upgraded even after correction is made for each customer.
[0062]
Next, one function of the control unit (framework) 2b shown in FIG. 2 will be described. As shown in FIG. 5, the framework 2b includes an XSLT (extensible Stylesheets Language Transformation) processor 32, and performs I / O of all screens. The screen I / O includes an XHTML screen design 2a that determines only the layout such as where and what items are to be arranged on the screen, and a value object 5a that is XML screen data embedded on the screen. And conversion information 31 written in XSL (extensible Stylesheets Language).
[0063]
That is, the XSLT processor 32 activates the information acquisition function with an event occurring on the screen as a trigger, and captures the screen data into the empty value object 5a. The screen data taken in at this time is data collected by the class of the business logic 3b by the domain manager 3a. Thereafter, the mapping function is activated, and based on the conversion information 31, XSL conversion is performed using the screen design 2a and the screen data of the value object 5a, thereby generating the HTML screen 33 that can be browsed by the browser 1a. I do.
[0064]
FIG. 6 is a diagram illustrating an example of screen generation according to the present embodiment. In FIG. 6, the screen design 2a defines only the layout of the combo box, and the item name of the combo box is, for example, "todofuken1". Data to be embedded in this combo box is defined in the value object 5a. Here, the data actually selected in the combo box is entered in the portion indicated by the tag of <todofuken1>. In the part indicated by the <option> tag, data acquired from the database 4a is described as an attribute.
[0065]
The XSLT processor 32 activates the information acquisition function with the operation of the combo box as a trigger, and fetches the data indicated by <option> from the database 4a into the value object 5a. Then, by starting the mapping function and performing XSL transformation using the value object 5a and the screen design 2a that have taken in the data, the HTML-format screen 33 in which the data of the prefecture is actually input is displayed in the combo box. Generate.
[0066]
FIG. 7 is a diagram illustrating another example of screen generation according to the present embodiment. In FIG. 7, the screen design 2a defines only the layout of the list, and the item name of the list is, for example, "todofuken2". The data to be embedded in this list is defined in the value object 5a. Here, the code actually selected in the list is entered in the portion indicated by the tag <todofuken2>. In the part indicated by the <option> tag, a code corresponding to data acquired from the database 4a is described as an attribute.
[0067]
The XSLT processor 32 activates the information acquisition function triggered by the request to display the list, and takes in data corresponding to the code indicated by <option> from the database 4a into the value object 5a. Then, by activating the mapping function and performing XSL conversion using the value object 5a and the screen design 2a that have taken in the data, the screen 33 in the HTML format having a list in which codes are associated with prefecture names is displayed. Generate. Further, when any code is selected from this list, the XSLT processor 32 replaces the code with data of the corresponding prefecture name and displays the code on the screen 33 'to which the next transition is made.
[0068]
As described herein, in the present embodiment, the screen design 2a is created in XHTML, and the value object 5a, which is the screen data to be pasted on the screen, is created in XML, so that the XSL simple conversion information 31 is created. Screen display. Thus, the screen design 2a, the screen data (value object 5a), and the logic for controlling the screen (the XSLT processor 32) can be completely separated.
[0069]
On the other hand, conventionally, as shown in FIG. 8, in a servlet 42 which is a modular Java program executed on a Web server 41, a screen design 42a, screen data 42b, and logic (data to the screen) are displayed. A program 42c for inputting, checking input data, processing data, transmitting data to a database, and the like was described as one module.
[0070]
In the conventional system shown in FIG. 8, the Web application server 45 includes an EJB (Enterprise JBeanBeans) container 46 for converting software into objects and integrating them. Several types of business logic created therein operate on the EJB container 46 as the EJB component 46a. When a request for screen display is given from the Web browser to the Web server 41, the servlet 42 operates in the Web server 2, accesses the Web application server 45, and calls a necessary EJB component 46a.
[0071]
The called EJB component 46a accesses the database as necessary, performs predetermined processing, and returns the result to the Web server 41. The servlet 42 on the Web server 41 generates a Web page using the result. After that, a JSP (Java Server Pages) 43 is activated to generate an HTML screen 44 that can be browsed by a Web browser.
[0072]
As described above, conventionally, since the screen design and the screen data are described as one module, it is necessary to change the screen data integrally with the screen design. On the other hand, in the present embodiment, the screen design and the screen data are completely separated. The XSLT processor 32 performs the process of embedding the screen data in the screen design, not as a function of the business logic 3b, but as a function of the framework 2b.
[0073]
Therefore, only the screen data can be dynamically changed without making any changes to the screen design 2a or the business logic 3b. For example, when it is desired to increase the data of the prefecture by one in the examples of FIGS. 6 and 7, only the value object 5a needs to be changed. This makes it easy to customize the user interface 2a such as a screen, a form, and CSV.
[0074]
Further, conventionally, since the screen design and the logic are described as one module, even if it is desired to simply change the screen design, the screen design cannot be appropriately changed without knowing the contents of the program. Conversely, even if you simply wanted to change the logic, you could not change the program properly without knowing the screen design. On the other hand, in the present embodiment, since the screen design and the logic are completely separated, the screen design and the logic can be independently corrected, and the screen can be easily customized.
[0075]
Further, in the present embodiment, since the screen design 2a and the conversion information 31 are separately provided, if it is desired to slightly change the way of showing a plurality of screen designs 2a necessary for the business processing system, the individual Instead of modifying the screen design 2a, it is possible to respond only by changing the conversion rule of the conversion information 31. Moreover, the screen design 2a itself is patterned according to the determined rules because the template is automatically generated by the construction support apparatus 200. Therefore, even if there are many screen designs 2a to be created, only a few types of necessary conversion information 31 are required, and it is possible to easily customize thousands of screen designs 2a simply by changing the slight conversion information 31. it can.
[0076]
Further, the present embodiment is characterized in that data between all classes between the framework 2b and the domain manager 3a and between the domain manager 3a and the business logic 3b is exchanged in the XML format. In this way, a complicated data format can be treated as one and the same set of data.
[0077]
As a result, even when it is desired to increase or decrease the data items to be transferred by customization, a change is made by simply increasing or decreasing the items in the XML description. Moreover, such a change may be made with the screen editor 300 of FIG. If a necessary change is made here, the value object 5a on which the change is reflected is automatically generated. Therefore, according to the present embodiment, there is also a merit that data exchanged between programs can be easily customized.
[0078]
Conventionally, data transfer was performed via a memory, so in order to verify whether data passed from one program to another is correct, the data in the memory used for the transfer was used. Need to reference data. However, it is not easy to see the data in the memory. On the other hand, in the present embodiment, since data is transferred in the XML format, it is possible to easily refer to the text format as to what data is passed and how. Therefore, tests and data tracking when a failure occurs can be easily performed.
[0079]
Next, a screen transition event cache function performed by the framework 2b will be described. FIG. 9 is a diagram for explaining the event cache function of the present embodiment. In FIG. 9, when data is input to an item (not shown) while the screen A is being displayed, the screen transitions to the screen B when the “next” button is operated. When data is input to an item (not shown) during the display of the screen B and the “next” button is operated, the screen transits to the screen C. Further, an example in which the screen returns to the screen B when the “return” button is operated while the screen C is displayed is shown.
[0080]
At the time of such a screen transition, the mechanism described in FIG. 5 is executed. For example, when transitioning from the screen A to the screen B, the program PG1 is executed in response to the occurrence of an event called a button operation. The program PG1 accesses the database 4a to acquire data necessary for displaying the screen B, and generates and displays an HTML screen B using the acquired data.
[0081]
The same procedure is followed when transitioning from screen B to screen C. That is, the program PG2 is activated in response to the occurrence of an event of a button operation on the screen B. The program PG2 accesses the database 4a to acquire data necessary for displaying the screen C, and generates and displays an HTML screen C using the acquired data.
[0082]
When returning from the screen C to the screen B, a dedicated program (not shown) is usually activated. Then, data necessary for displaying the screen B is reacquired from the database 4a, and an HTML screen B is generated and displayed using the data. As described above, in order to implement a screen transition that returns from the screen C to the screen B, conventionally, it was necessary to prepare a return program (not shown). On the other hand, in the present embodiment, by providing the event cache function described below, this program is not required at all.
[0083]
That is, in the present embodiment, the construction support apparatus 200 shown in FIG. 2 determines which event is to be written into the event cache and what event is to use the contents of the event cache. And is registered in the framework 2b as the above-described meta information. This registration is performed using the screen definition unit 11 and the framework generation unit 13 in FIG. Referring to FIG. 9, when the "next" button on the screen A and the screen B is pressed, the data is written into the event cache memory 50, and when the "return" button on the screen C is pressed, the event cache memory is written. The use of the cache contents of the memory 50 is defined as meta information.
[0084]
The event cache memory 50 is a first-in, first-out memory. The information stored in the event cache memory 50 is the name of the designated event and input data for executing the event. For example, when the “Next” button is pressed on the screen A, the event name and the input data are stored in the event cache memory 50 as an event for displaying the screen B. When the “next” button is pressed on the screen B, the event name and the input data are stored in the event cache memory 50 as an event for displaying the screen C.
[0085]
On the other hand, when the “return” button is pressed on the screen C, the framework 2b refers to the event cache memory 50 and extracts the cache information. The information to be taken out at this time is the latest stored information except for the event for displaying its own screen. In the case of the example of FIG.
The latest event stored in the event cache memory 50 is an event for displaying the screen C. However, since this is for displaying itself, it is ignored and the cache information of the event for displaying the next new screen B is deleted. Take out.
[0086]
Then, the framework 2b executes a process according to the extracted cache information. The contents of the event when the “next” button is pressed on the screen A are described in the cache information extracted here. Therefore, in this case, the program PG1 is executed, and the HTML screen B is generated and displayed. As described above, according to the present embodiment, a screen transition from the screen C to the screen B can be realized without preparing a return-only program. Therefore, the number of steps for program development can be significantly reduced.
[0087]
Next, the function of the DAO 6 shown in FIG. 2 will be described. The DAO 6 performs processing when accessing the database 4a from the business logic 3b, and has a search execution function using, for example, an SQL statement. In a normal DAO, for example, when there are three search items, the search is executed by being divided into seven programs depending on which item the search condition is input.
[0088]
That is, conventionally, for three search items, three search programs when only one of the search items is input and three search programs when any two of the search items are input are used. In addition, it is necessary to create one search program when all the search items are input, that is, a total of seven search programs. On the other hand, in the present embodiment, a search condition of a maximum pattern is set as an SQL sentence for data search, one search program is registered, and condition sentences of various patterns are dynamically generated and executed. To
[0089]
FIG. 10 is a diagram illustrating a configuration example of the DAO 6 representing the search condition of the maximum pattern. As shown in FIG. 10, the DAO 6 according to the present embodiment includes a data item 61 acquired by a search, a table 62 to be searched, a search condition 63 of a maximum pattern including three search items α, β, and γ. Is described. Such a search program based on the SQL sentence uses only the search item conditions actually input on the screen with respect to the search condition 63, and executes the search with the input items not input being empty.
[0090]
Such a DAO 6 is automatically generated by the construction support device 200 of FIG. 2 as described above. At this time, the DAO generation unit 21 in FIG. 2 automatically generates the DAO 6 of the SQL statement according to the format of the designated database vendor based on the design definition information output from the SQL definition unit 20. The DAO generation unit 21 has a DAO 6 generation logic adapted to SQL statements for various vendors. Therefore, when a DAO 6 for a different vendor is desired, it is only necessary to switch the generation logic in the DAO generator 21 to that for a different vendor, and it is not necessary to manually rewrite the DAO 6 itself.
[0091]
As described above, in the present embodiment, the SQL sentence described in the business application such as the business logic 3b is usually taken out as the DAO 6, only the search condition of the maximum pattern is registered in the DAO 6, and then various patterns are registered. Is dynamically generated, the processing of the search program of a plurality of patterns can be executed only by creating one DAO 6, and the production of the program for creating the SQL statement becomes easy. Also, when creating DAOs 6 for different vendors, the DAOs 6 can be easily generated using the construction support device 200, so that the productivity of the DAOs 6 can be improved.
[0092]
The business processing system 100 and the construction support apparatus 200 according to the present embodiment described above are actually configured to include a computer CPU or MPU, RAM, ROM, and the like, and the programs stored in the RAM and ROM operate. This can be achieved by:
[0093]
Therefore, the present invention can be realized by recording a program that causes a computer to perform the functions of the present embodiment on a recording medium such as a CD-ROM and reading the program into the computer. As a recording medium for recording the program, a flexible disk, a hard disk, a magnetic tape, an optical disk, a magneto-optical disk, a DVD, a nonvolatile memory card, and the like can be used in addition to the CD-ROM. Further, the present invention can also be realized by downloading the program to a computer via a network such as the Internet.
[0094]
Further, in order to realize the functions of the business processing system 100 or the construction support device 200 according to the present embodiment in a network environment, all or some of the programs may be executed by another computer.
[0095]
Further, the functions of the above-described embodiments are realized by the computer executing the supplied program, and the program cooperates with the operating system (OS) or other application software running on the computer. When the functions of the above-described embodiment are realized, or when all or a part of the processing of the supplied program is performed by a function expansion board or a function expansion unit of a computer, and the functions of the above-described embodiment are realized. Such a program is also included in the embodiment of the present invention.
[0096]
It should be noted that each of the above-described embodiments is merely an example of a specific embodiment for carrying out the present invention, and the technical scope of the present invention should not be interpreted in a limited manner. That is, the present invention can be embodied in various forms without departing from the spirit or main features thereof.
[0097]
【The invention's effect】
As described above, according to the present invention, a superclass implements a standard program for business processing, and a subclass that inherits the superclass and initially prepares an empty subclass in which a modification program is implemented when modifying business processing is prepared. The modification program implemented by customizing the business process can be prevented from being mixed with the standard program. As a result, the man-hour for customizing the standard program can be significantly reduced, and the easiness of version upgrade and the easiness of management can be improved.
[0098]
According to another feature of the present invention, since data between classes is exchanged in the XML format, a complicated data format can be treated as one and the same set of data. Further, not only is it easy to change when the number of items to be transferred increases or decreases, and since the transferred data can be referred to in the XML format, it is possible to easily perform tests and data tracking when a failure occurs.
[0099]
According to another feature of the present invention, a screen design is generated in an XHTML format, data (value object) to be pasted on the screen is generated in an XML format, and these are subjected to XSL conversion to display an HTML screen display. Since the screen design is performed, the screen design and the screen data can be completely separated, and customization can be easily performed.
[0100]
According to another feature of the present invention, by registering only the maximum search condition pattern as an SQL sentence for data search, the condition sentence is dynamically generated and executed. Program creation is facilitated, and productivity of a database access program can be improved.
[0101]
According to another feature of the present invention, event information necessary for performing a designated screen transition process is stored in a cache memory, and event information in the cache memory is read out in a subsequent process, and the screen is read in accordance therewith. Since the transition processing is executed, there is no need to generate a program for returning to the previous screen or redrawing processing when the screen transition is complicated. Further, since it is not necessary to transfer the input data of the preprocessing to the subsequent processing, it is possible to generate a simple program. Therefore, the productivity of the program can be improved.
[0102]
As described above, according to the present invention, it is possible to improve the productivity of application development related to a business processing system, the ease of maintenance, the reusability, and the flexibility for changing specifications.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a schematic configuration of a business processing system according to an embodiment.
FIG. 2 is a diagram illustrating a configuration example of a business processing system and a construction support device according to the embodiment;
FIG. 3 is a diagram for describing change management of business logic according to the embodiment;
FIG. 4 is a diagram for explaining a conventional customization method.
FIG. 5 is a diagram for describing a screen generation function by the framework of the embodiment.
FIG. 6 is a diagram illustrating an example of screen generation according to the present embodiment.
FIG. 7 is a diagram illustrating another example of screen generation according to the present embodiment.
FIG. 8 is a diagram for describing a conventional screen generation process.
FIG. 9 is a diagram illustrating an event cache function according to the embodiment;
FIG. 10 is a diagram illustrating a configuration example of a DAO representing search conditions for a maximum pattern according to the present embodiment.
FIG. 11 is a diagram showing a schematic configuration of a conventional business processing system.
[Explanation of symbols]
1 client
1a Browser
2 Web server
2a User interface
2b control unit (framework)
3 Web application server
3a Domain Manager (DM)
3b Business logic (BL)
4 database server
4a Database (DB)
5a, 5b Value object (VO)
6. Data Access Object (DAO)
11 Screen definition part
12 Screen generator
13 Framework generator
14 VO definition section
15 VO generator
16 DM definition part
17 DM generation unit
18 BL definition section
19 VO generator
20 SQL definition section
21 DAO generator
22 DB definition section
23 DDL etc. Generation Unit
24 Change Management Department
100 business processing system
200 Construction support device
300 Screen Editor
400 Business Rule Design Tool
500 DB design tool

Claims (13)

Objects that are instantiated by a superclass group that implements the business process standard program and a subclass that inherits the individual superclass and that is initially empty when the modification program is implemented when modifying the business process Object storage means for storing
A business processing system, comprising: control means for controlling so as to sequentially execute the subclass group inherited from the method of the standard program implemented in the superclass group. Object storage means for storing an object in which a plurality of classes implementing a business processing program are instantiated;
A business processing system comprising: control means for controlling data defined by a value object in XML format to be transferred between the plurality of classes. The object storage means stores a domain manager that controls a series of business processes in an event unit and executes a normalized transaction, and a business logic that exists in a business logic unit and executes an individual business process itself,
3. The business processing system according to claim 2, wherein the control means performs control so as to transfer data defined by the value object in the XML format between the domain manager and the business logic. Using XHTML screen design information defining the screen design related to the business process and the XML format value object defining the data to be embedded on the screen, the XSL format is defined according to the XSL format conversion information defining the conversion rule. 3. The business processing system according to claim 2, further comprising a screen generating unit that generates a screen in an HTML format by performing the conversion. For a plurality of search items used when accessing the database, an object storage means for storing a data access object including all search items,
A search condition is set for a search item actually specified by a user among all search items of the data access object, and a condition statement of a corresponding pattern is dynamically generated to access the database. A business processing system, comprising: An event for activating a screen transition, and meta information storage means for storing meta information indicating which event is to be written or read when the event information is written,
A cache for controlling to write or read event information necessary for performing the screen transition to or from a cache memory in accordance with meta information stored in the meta information storage means when an event for activating the screen transition occurs. Control means;
When writing of the event information is performed by the cache control unit, the process related to the screen transition is executed in accordance with an actually generated event. When reading of the event information is performed by the cache control unit, the readout of the event information is performed. A business processing system, comprising: a screen transition execution unit that executes a process related to the screen transition according to event information. When generating a class for implementing a standard program for business processing, a class for implementing the standard program is generated as a superclass, and a subclass that inherits the superclass is a modification of the business processing. A class generation means for generating an initially empty subclass when the fix is implemented,
When implementing the above-mentioned modification program, the construction support device for a business processing system, further comprising: a modification program implementing means for controlling so as to implement the modification program in the subclass. A value that generates definition information on a data structure exchanged between business processing objects based on input information from a screen design unit that creates and edits a screen by pasting various GUI parts on an editor screen. Object definition means;
Value object generating means for generating a value object in an XML format for retaining data of items arranged in the screen based on the value object definition information generated by the value object defining means. A business support system construction support device. Screen definition means for generating, based on input information from the screen design means, one or more items included in the screen, definition information on attributes of each item and screen layout,
Screen generation means for generating a screen design in XHTML format based on the screen definition information generated by the screen definition means;
An XSL format that defines a conversion rule when generating an HTML screen using the XHTML screen design information generated by the screen generating means and the XML value object generated by the value object generating means. 9. The business processing system construction support apparatus according to claim 8, further comprising: conversion information generating means for generating the conversion information. SQL definition means for generating definition information on an SQL statement in accessing the database;
A data access object for accessing the database based on the definition information generated by the SQL definition means, wherein the data includes a plurality of search items used for accessing the database. And a data access object generating means for generating an access object. Definition information about one or more items included in a screen, attributes of each item, and screen layout based on input information from a screen design unit that creates and edits a screen by pasting various GUI parts on an editor screen Screen definition means for generating the
Based on the design definition information of the event included in the attribute of each item defined by the screen definition means, it is possible to distinguish between an event for activating a screen transition and which event is to be written or read when the event information is generated. And meta information generating means for generating meta information representing
The meta information is used for specifying whether to write or read event information necessary for performing the screen transition to / from the cache memory when an event for activating the screen transition occurs, and to read the event information. The information processing apparatus executes the processing related to the screen transition according to the read event information. A business processing system program for causing a computer to function as each unit according to claim 1. A program for supporting construction of a business processing system for causing a computer to function as each means according to any one of claims 7 to 11.

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