Retrieving ATG OOTB Droplet from jsp -
<dsp:page><%-- Importing Droplet --%>
<dsp:importbean bean="/atg/commerce/catalog/ProductLookup" />
<%-- Using Imported Droplet --%>
<dsp:droplet name="ProductLookup">
<%-- Passing parameters --%>
<dsp:param name="id" param="productId" />
<%-- Getting output parameter --%>
<dsp:oparam name="output">
<%-- Retreiving value from output and set to a variable --%>
<dsp:getvalueof var="productObject" param="element" scope="request" />
<dsp:param name="product" param="element" />
</dsp:oparam>
</dsp:droplet>
</dsp:page>
Creating Droplet Component -
Example to create sample droplet and how to fetch from jsp.
$class=testDirectory.TestDroplet
$scope=request
TestDroplet.java -
// java class should extend the DynamoServlet
public class TestDroplet extends DynamoServlet {
// override the service method
public void service(DynamoHttpServletRequest pRequest,
DynamoHttpServletResponse pResponse) throws ServletException,
IOException {
// we can set output parameter to pass the output to jsp page.
pRequest.setParameter("profile", "This is test droplet.");
pRequest.serviceLocalParameter("output", pRequest, pResponse);
}
TestDroplet.jsp -
<dsp:importbean bean="/testDirectory/TestDroplet" />
<dsp:droplet name="TestDroplet">
<dsp:param name="profile_input" value="learningwithadarsh" />
<dsp:oparam name="output">
<dsp:getvalueof param="profile"/>
</dsp:oparam>
</dsp:droplet>
Difference between serviceLocalParameter and serviceParameter
The parameters set by Servlet beans are only visible inside the Droplet <dsp:oparam> tag (unless set to an attribute).
If we are using nested droplets, dropletA inside dropletB :
<dropletA> - Output 'someoutput' defines to this droplet
<dropletB>
serviceLocalParameter : output parameter will not be accessable
serviceParameter : we can access output parameter "someoutput" here.
</dropletB>
</dropletA>
