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Liferay中實現多對多的關係

Liferay Service Builder Many to Many Relation in Plugin Portlet

參考URL:http://www.liferaysavvy.com/2014/01/liferay-service-builder-many-to-many_12.html

 <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE service-builder PUBLIC "-//Liferay//DTD Service Builder 6.1.0//EN" "http://www.liferay.com/dtd/liferay-service-builder_6_1_0.dtd">
<service-builder package-path="com.meera.db">
<author>E5410</author>
<namespace>meera</namespace>
<entity name="Student" local-service="true" remote-service="true" cache-enabled="false">
<column name="studentId" type="long" primary="true" />
<column name="studentName" type="String" />
<column name="studentPlace" type="String" />
<column name="studentCollege" type="String" />
<column name="courses" type="Collection" entity="Course" mapping-table="Students_Courses"/>
</entity>
<entity name="Course" local-service="true" remote-service="true" cache-enabled="false">
<column name="courseId" type="long" primary="true" />
<column name="courseName" type="String" />
<column name="courseGroup" type="String" />
<column name="students" type="Collection" entity="Student" mapping-table="Students_Courses" />
</entity>
</service-builder>