在MyEclipse下创建一个UML的示例

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MyEclipse UML (MyUML) Quickstart

Last Revision: August 31, 2005

Outline

Preface
Requirements
Introduction
Creating a UML Model Repository
Creating and Editing UML Diagrams
Forward Engineering - UML Class Diagrams to Java Code
Reverse Engineering - Java Code to UML Class Diagrams
Drawing Tools
Compatibility with Argo UML
FAQ
References
User Feedback

1. Preface

This document was written using Sun JDK 1.4.2, Eclipse 3.1 and MyEclipse 4.1. All screenshots are based upon the default user interface settings for Eclipse, MyEclipse, and Windows XP. If you experience difficulty with the instruction of this document, please see the User Feedback section for how to provide feedback to the MyEclipse documentation team.

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2. Requirements

MyEclipse UML Tools (MyUML) are supported in the following enviornments:

MyUML requires a Professional level, MyEclipse Subscription
Supported on Windows 2000 or XP with JDK 1.4 or Java 5
Supported on Linux with Java 5 only
Macintosh OS/X is not available at this time due to Eclipse bug (see Eclipse bug #145890)

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3. Introduction

MyUML provides developers the MyEclipse developers with the following UML features:

UML Diagrams: Use-case, Class, Sequence, Collaboration, State, Activity, Deployment
Integrated Diagram Editor, Outline View, and Properties View
UML Perspective
Free-form figure drawing tools
Direct edit of Node and Connection details via Hot-Zones
Diagrams stored in UML Model Repository File (e.g., cardemo.umr)
No restriction on location or project type that may contain UML Model Repository files
Generate Java code from models
Export models as XMI 1.0 format
Export diagrams in image format: GIF, PNG, PS, EPS, SVG
Reverse-engineer class diagrams from any MyEclipse J2EE project or Eclipse Java project

Batch process reverse-engineer any combination of project, source-folder, Java package or individual class
Drag-n-drop any Java class or interface from the Eclipse PackageExplorer view onto any UML class diagram
Customizable reverse-engineering preferences

Drag-n-drop any UML artifact from the Outline view onto any compatible UML diagram
Auto-layout option for class diagram

UML Perspective

The MyEclipse UML Perspective provides a workbench organization tailored to activities of the modeling process. Default views include the UML Diagram Editor, Outline View, and custom Properties View. Toolbar actions are contributed to make new diagram creation quick and simple. An annotated class diagram example is shown below.

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4. Creating a UML Model Repository

MyEclipse UML stores all UML diagrams and model elements in a special file known as a UML Model Repository (UMR). A UMR has a file extension of " .umr" and is depicted with the

icon in the PackageExplorer and Navigation views. You may create any number of UMR files in any type of Eclipse project.

The 1st step in working with new MyUML diagrams is to create a UML model repository using the New UMR Wizard.

Launch the New UMR Wizard (see figure below) from the menu File > New > Other... > MyEclipse > UML > UML Model Repository, or from the MyEclipse UML Perspective at FiIe > New... > UML Model Repository.
Complete the wizard by navigating to workspace folder that will contain the new UMR file and by specifying the name of the UML model repository.

Select Finish to create the repository at the location you specified and to open MyUML Diagram Editor as shown below. Note that a new UMR file is created with an empty class diagram.

That concludes creating the steps necessary to create a UML repository. In the next section adding diagrams to the model is discussed.

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5. Creating and Editing UML Diagrams

5.1 Creating UML Diagrams

A model repository can contain any number of diagrams of any type. To add a new diagram to a model repository, open the UML repository file in the editor and then click on the appropriate new UML Diagram icon from main toolbar, as shown below.

Use-case diagram

Class diagram

Sequence diagram

Collaboration diagram

State diagram

Activity diagram

Deployment diagram

To edit or view a UML diagram select it from either the dropdown diagram list on the Diagram Editor's local toolbar or from the MyUML outline view. The Diagram Editor toolbar is shown below.

5.2 Adding Model Elements to Diagrams

Model elements can be added to the current diagram from the UML editor's toolbar simply by clicking on the appropriate element button and then selecting the location on the diagram where the new element should reside. Please note that the toolbar is "diagram-specific", so its contents changes based on the active diagram's type. Below is a sequence of screenshots that show how a class can be added to a class diagram. Any element can be added to other diagrams in a similar way.

5.3 Editing Diagram Elements

The Diagram Editor enables you to directly modify nodes and connections through a concept known as a hot-zone. There are two type of hot-zones: text and connection.

Text hot-zone is an editable region within a node or at the center and end-points of a connection, e.g., association, that is activated by double-clicking within its region. When activated, a hot-zone presents a rectangular editable type-in field. The type-in field accepts direct text entry and delete/cut/copy/paste operations. To commit the changes of a text hot-zone, select anywhere outside of the hot-zone edit region. The type-in region will disappear and be replaced with its content.

Quick Connects are a type of hot-zone that provides fly-over short-cut association and generalization connections on a node. The user can quickly choose the connection type, e.g., association, generalization, self association, and drag the connection to another node to complete the connection.

Properties editing allows any change to an element to be entered through a form-based UI called the Properties View. The Properties View has several pages for easy entry or edit of any attribute associated with an element. Some of the editable fields overlap with changes that can be made in a hot-zone, and others are only available in the Properties view.

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6. Forward Engineering - UML Class Diagrams to Java Code

MyEclipse UML enables you to generate Java code directly from the class diagrams of your UML model.

Open the UML repository with the class diagrams you wish to generate Java code
Launch the Forward-Engineering Wizard from the menubar, UML > Generate Java...

Select the source folder of the MyEclipse J2EE Project or any Eclipse Java project into which the new UML->Java classes will be created.
Select 1 or more UML classes to translate to Java code
Select Finish to initiate the code generation process

WARNING: If a Java class already exists in the output location for a forward-engineered UML class, the existing Java class will be deleted and replaced by the new Java class.

After generation is complete, the newly generated Java classes will appear in the specified source folder.

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7. Reverse Engineering - Java Code to UML Class Diagrams

Reverse engineering from Java code to UML can be done in two different ways, through batch processing or through drag-and-drop. Both options will be described in this section.

7.1 Batch Mode - Reverse-Engineering

The MyEclipse UML Reverse-Engineering tools enable you to import the Java classes and interfaces from any Java project, source folder, Java package or source file.

Open the UMR file
Launch the MyEclipse UML Reverse-Engineering Wizard. From the Eclipse menubar select UML > Reverse Engineer UML from Java... .

Navigate to and select the Java source files to reverse-engineer.

Specify your processing preferences.
Select Finish to initiate reverse-engineering process.

7.2 Drag-and-Drop - Reverse-Engineering

You can seamlessly add Java classes and interfaces to any UML class diagram using drag-n-drop operations.

From the Java PackageExplorer View, select one or more classes or interfaces
Drag and drop the selected classes onto the active UML class diagram in the UML Diagram Editor.

After dropping the Java classes, the following dialog will allow customization of the generated content. The default settings are highly recommended.
Select Finish to initiate reverse-engineering of the selected Java classes.

Upon completion, the class diagram will reflect the new additions, including any associations between them, as shown below.

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8. Drawing Tools

Since it's often useful to annotate diagrams with some amount of free-form drawing or text, MyUML includes a set of drawing tools for simple shapes and text which can be used on any type of diagram. The drawing tool selection menu is in the main diagram toolbar and is used to select the element type.

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9. Compatibility with Argo UML

MyUML is backward compatible with the.zargo file format of Argo UML (ver. 0.17 or earlier). To use an existing Argo model file with MyUML do the following:

Copy the Argo file into an Eclipse project.
Open the .zargo file in the Diagram Editor to begin browsing and editing diagrams.

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10. FAQ

Q1: When I open the MyEclipse workbench I don't see how to get started using UML features.
A1: You need to create a UMR file and open it in the UML diagram editor. Do the following:

Open the MyEclipse UML perspective, Windows>Open Perspective>Other>MyEclipse UML
Create a new UMR file, File>New>MyEclipse>UML>UML Model Repository. This will create a UMR file and open the UML Diagram Editor.

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11. References

To learn more about UML visit the UML Resource Center.

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12. User Feedback

If you have comments or suggestions regarding this document please submit them to the If you have comments or suggestions regarding this document please submit them to the MyEclipse Documentation Forum .

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转自MyEclipse的帮助文档