1. System Design Tools
Albert Guo
junyuo@gmail.com
12009年1月4日星期日

2. 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
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3. Scenario
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4. System Design Process
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5. Design ER Diagram by JDeveloper
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6. JDeveloper Studio
JDeveloper Studio
It 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.
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7. JDeveloper Studio
Download: http://www.oracle.com/technology/software/
products/jdev/htdocs/soft10131.html
Documentation: http://www.oracle.com/technology/
documentation/jdev.html
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9. Generate DB schema diagram via
SchemaSpy
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10. SchemaSpy
SchemaSpy
SchemaSpy 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.
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11. 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.
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12. 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>
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13. SchemaSpy Analysis Report
list all tables in this list
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14. SchemaSpy Analysis Report
show the table relationships
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15. Generate artifacts by MyEclipse
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16. Generate artifacts by MyEclipse
Artifacts include
Entities
DAOs
persistence.xml
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17. select tables which you want to do
DTO generation in database explore
view
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18. 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.
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19. MyEclipse had generated DTOs
and also updated its
persistence.xml
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20. DTOs which generated by
MyEclipse. It just full of
getter and setter method.
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21. Then we go to Database
Explorer view to generate
DAOs
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22. 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.
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23. The artifacts which had been
generated by MyEclipse
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24. These methods which had been
generated, you may can
customize it to fulfill your
requirements.
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25. Refactor artifacts automatically via ant
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26. Refactor artifacts automatically via ant
Refactor rules for entities
1. 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
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27. Refactor artifacts automatically via ant
<property name="entity.dir" value="D:worktestsrcjavacomhtchrentity"/>
<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>
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28. Q&A
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