How to implement Simple Service Builder

How to implement Simple Service Builder

Requirement : I want to insert Employee information into DB and fetch all the information and displaying into JSP.Here I am creating project as "Employee-Portlet".

Step 1 : Design your jsp with Emp Name, Emp Designation like

                <portlet:actionURL var="empActionURL" />

                <form action="<%=empActionURL.toString()%>" method="post">

                             Emp Name :<input type="text" name="empName" />

                             Emp Designation :<input type="text" name="empDesignation" />

                             <input type="submit" name="submit" value="Submit" />

                  </form>

Step 2 : create Service.xml under plugins/portlets/Employee-Portlet/docroot/WEB-INF  and provide entity information like

<!-- XML starts with pre-processor -->

<?xml version="1.0"?>                 

<!--docType declaration-->

<!DOCTYPE service-builder PUBLIC "-//Liferay//DTD Service Builder 5.2.0//EN" "[http://www.liferay.com/dtd/liferay-service-builder_5_2_0.dtd]">

<!-- Starts with ROOT Element-->

<service-builder package-path="com.liferay.book">

<!--namespace is mandatory, author is optional, with that same name space it will generate db query.-->

                <author>Satish Babu</author>

                <namespace>Book</namespace>

<!-- Entity where we can provide our model information with respective of Java and Table inforamtion with respective of DB-->   

<!-- table attribute is not mandatory. If you provide name attribute with the same name it will generate table also -->

<!-- local-service="true" means it will generate all the Services, Implementations, Model, Wrapper and Persistence classes -->

<!-- Which will be execute on top on our local JVM-->

<!-- remote-service="true" means it will generate all the services, implementations, model, wrapper, persistence and SOAP class-->

<!-- it will produce WSDL for you and with the help of Eclipse we can generate client stubs also by providing the WSDL-->

<!-- By default remote-service="true", if you dont want make the value as "false".-->

                <entity name="Book" local-service="true" remote-service="false">

                                <!-- column attribute will generate attribute for model class and create column for table-->

                                <!-- PK fields -->

                                <column name="bookId" type="long" primary="true" />

                                <!-- Other fields -->

                                <column name="name" type="String" />

                                <column name="designation" type="String" />

                </entity>

</service-builder>

Run ant build-service from the employee-portlet folder. This will generate the entity and utility classes.

Refresh the project once you execute build-service .

Customize the generated code by opening EmployeeLocalServiceImpl in com.liferay.book.service.impl and add:

public class EmployeeLocalServiceImpl extends EmployeeLocalServiceBaseImpl {

    public Employee addEmployee(String empName, String empDesignation) throws SystemException {

        Employee emp = EmployeeUtil.create(CounterLocalServiceUtil.increment());

        emp.setName(empName);

        emp.setDesignation(empDesination);

        return EmployeeUtil.update(emp, true);

    }

    public java.util.List<Employee> getAllEmployees() throws SystemException {

        return EmployeeUtil.findAll();

    }

Run ant build-service again. Now your custom method implementation will visible in service layer.

Ex : EmployeeLocalServiceUtil.addEmployee(name,manager);

Implementing Crud operation from your portlet action class (EmployeePortlet).

override the doView() like this :

public void doView(RenderRequest renderRequest, RenderResponse renderResponse) throws IOException, PortletException {

        try {

           

                String empName = renderRequest.getParameter("empName");

                String empDesignation = renderRequest.getParameter("empDesignation");

                EmployeeLocalServiceUtil.addEmployee(empName,empDesignation);

        } catch(com.liferay.portal.SystemException se) {

                                // intentionally empty

        }

                PortletRequestDispatcher dispatcher = getPortletContext.getRequestDisplatcher(viewJSP);

                dispatcher.include(renderRequest,renderResponse);