System Design Tools

System Design ToolsAlbert Guo

[email protected]

12009年1月4日星期日

mailto:[email protected]

mailto:[email protected]

Agenda

Scenario

System Design Process

Design ER Diagram by JDeveloper

Generate DB schema diagram via SchemaSpy

Generate artifacts by MyEclipse

Refactor artifacts automatically via ant

Q&A


Scenario


System Design Process


Design ER Diagram by JDeveloper


JDeveloper Studio

JDeveloper StudioIt contains all the features of the product - including ADF, SOA, J2EE, UML, Database, Java, and XML. This download includes JDK 5.0.5 and is supported on Windows XP, 2003 and 2000.

I used this tool to do schema design and draw ER diagram. It will create / update / delete tables, columns and constraints synchrnously as I edit ER diagram.


JDeveloper Studio

Download: http://www.oracle.com/technology/software/products/jdev/htdocs/soft10131.html

Documentation: http://www.oracle.com/technology/documentation/jdev.html


http://www.oracle.com/technology/software/products/jdev/htdocs/soft10131.html




http://www.oracle.com/technology/documentation/jdev.html




Generate DB schema diagram via SchemaSpy


SchemaSpy

SchemaSpySchemaSpy is a Java-based tool that analyzes the metadata of a schema in a database and generates a visual representation of it in a browser-displayable format.

Download: http://schemaspy.sourceforge.net/

SchemaSpy requires:1. Java 1.4 or higher

2. Graphviz: http://www.graphviz.org/

I use ant to execute command to generate schema document.


http://schemaspy.sourceforge.net


http://www.graphviz.org

http://www.graphviz.org

SchemaSpy

Regarding its commands, please go to here to check: http://schemaspy.sourceforge.net/I had integrated its commands into ant script, so I can reuse it easily.






Ant build script

<?xml version="1.0" encoding="UTF-8"?><project name="schemaspy" default=" schemaspy "> <property name="reports.dir" value="C:\rs-schema"/> <tstamp> <format property="CURRENT_DATETIME" pattern="yyyy/MM/dd HH:mm" /> </tstamp> <target name="schemaspy"> <java jar="D:/jar/schemaSpy_4.1.1.jar" output="${reports.dir}/output.log" error="${reports.dir}/error.log" fork="true"> <arg line="-cp d:/jar/ojdbc14.jar;C:/Program Files/Graphviz 2.21/bin"/> <arg line="-t orathin"/> <arg line="-host 10.9.164.101"/> <arg line="-port 1521"/> <arg line="-db RSDB"/> <arg line="-u username"/> <arg line="-p password"/> <arg line="-s RSDB"/> <arg line="-o ${reports.dir}"/> <arg line="-ahic"/> </java> <tstamp> <format property="CURRENT_DATETIME" pattern="yyyy/MM/dd HH:mm" /> </tstamp> <echo>Schema Report had been generated to ${reports.dir} at ${CURRENT_DATETIME}</echo> </target>


SchemaSpy Analysis Report

list all tables in this list


SchemaSpy Analysis Report

show the table relationships



Artifacts includeEntities

DAOs

persistence.xml


select tables which you want to do DTO generation in database explore view


decide these artifacts will be generated into which project and in which package

check this checkbox to tell MyEclipse to geneate DTOs, and also update these DTOs to persistence.xml

click Finish button to get DTOs generation process done.


MyEclipse had generated DTOs and also updated its persistence.xml


DTOs which generated by MyEclipse. It just full of getter and setter method.


Then we go to Database Explorer view to generate DAOs


decide these artifacts should be generated to which project and which package.

check this checkbox to tell MyEclipse to generate DAOs

Click on the Finish button to get the DAOs generation process done.


The artifacts which had been generated by MyEclipse


These methods which had been generated, you may can customize it to fulfill your requirements.



Refactor rules for entities1. implement one more interface: Persistable

2. import one more class: import ht.fc.entity.essential.Persistable;

3. modify object ID generation rules: @Id@TableGenerator(name = "IDGEN", table = "htsequence", pkColumnName = "sequence", allocationSize=1)

4. eliminate @Basic(optional = false), and its import class



<property name="entity.dir" value="D:\work\test\src\java\com\htc\hr\entity"/> <target name="refactorEntity"> <echo>refactor entities...</echo> <replace dir="${entity.dir}" value='@Id@TableGenerator(name = "IDGEN", table = "htsequence", pkColumnName = "sequence", allocationSize=1)'> <include name="**/*.java" /> <replacetoken>@Id</replacetoken> </replace>

<replace dir="${entity.dir}" value=""> <include name="**/*.java" /> <replacetoken>@Basic(optional = false)</replacetoken> </replace>

<replace dir="${entity.dir}" value=""> <include name="**/*.java" /> <replacetoken>import javax.persistence.Basic;</replacetoken> </replace>

<replace dir="${entity.dir}" value='import ht.fc.entity.essential.Persistable;import java.io.Serializable;import javax.persistence.TableGenerator;'> <include name="**/*.java" /> <replacetoken>import java.io.Serializable;</replacetoken> </replace>

<replace dir="${entity.dir}" value="implements Serializable, Persistable"> <include name="**/*.java" /> <replacetoken>implements Serializable</replacetoken> </replace>

<tstamp> <format property="CURRENT_DATETIME" pattern="yyyy/MM/dd HH:mm" /> </tstamp> <echo>refactor entities had finished at ${CURRENT_DATETIME}</echo> </target>


Q&A


System Design Tools

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