Hello guys,

Entities are the heart of a service which are defined in the service.xml in the liferay portlet. It represents the map between the model objects in Java and the fields/column and tables in your database. Once your entities are defined in service.xml, the mapping automatically handle by Service Builder.

For this example, create entity for events. Heres a summary of the information well enter for the Event entity:-

Name: Event
Local service: yes
Remote service: yes

Below entity example will help to write service in liferay 6.2

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE service-builder PUBLIC "-//Liferay//DTD Service Builder 6.2.0//EN" "http://www.liferay.com/dtd/liferay-service-builder_6_2_0.dtd">
<service-builder package-path="com">
    <author>Events</author>
    <namespace>Events</namespace>
    <entity name="Event" table="Event" local-service="true" remote-service="true" cache-enabled="true">
        <!-- Primary Key  -->
        <column name="Eventid" type="long" primary="true" />

        <!-- Audit fields -->
        <column name="eventName" type="String" />
        <column name="eventDetails" type="String" />
        <column name="eventDate" type="Date" />

        <!-- Order by  -->
        <order by="asc">
            <order-column name="eventDate" />
        </order>
    </entity>
</service-builder>