The next example shows how you might write an ATG servlet bean that dumps information about any bean. This example servlet bean, named BeanInfoDroplet, sets a parameter named beaninfo with the values of the BeanInfo of the bean passed to it:
public class BeanInfoDroplet extends DynamoServlet {
public void service(DynamoHttpServletRequest pRequest,
DynamoHttpServletResponse pResponse)
throws ServletException, IOException {
Object bean = pRequest.getObjectParameter("bean");
try {
pRequest.setParameter("beaninfo", DynamicBeans.getBeanInfo(bean));
} catch (IntrospectionException ex) {
logError(ex);
}
pRequest.serviceParameter("output", pRequest, pResponse);
}
}You might invoke the example BeanInfoDroplet servlet bean in a JSP like the following example. You pass the name of the bean in the bean input parameter. This page then displays the beaninfo parameter in a table:
<%@ taglib uri="/dspTaglib" prefix="dsp" %>
<dsp:page>
<html>
<head><title>BeanInfo</title></head>
<body><h1>BeanInfo</h1>
<dsp:droplet name="BeanInfoDroplet">
<dsp:param bean="/atg/userprofiling/Profile" name="bean"/>
<dsp:oparam name="output">
<b><dsp:valueof param="beaninfo.name"/></b><p>
<i><dsp:valueof param="beaninfo.shortDescription"/></i><p>
<dsp:droplet name="ForEach">
<dsp:param name="array" param="beaninfo.propertyDescriptors"/>
<dsp:oparam name="outputStart">
<table>
<tr>
<td>Property</td>
<td>Type</td>
<td>Value</td>
<td>Readable?</td>
<td>Writable?</td>
<td>Required?</td>
<td>Expert?</td>
<td>Hidden?</td>
<td>Preferred?</td>
<td>Description</td>
</tr>
</dsp:oparam>
<dsp:oparam name="output">
<tr>
<td><dsp:valueof param="element.name"/></td>
<td><dsp:valueof param="element.propertyType.name"/></td>
<td>
<dsp:valueof param='<%="bean." +
request.getParameter("element.name")%>'/>
</td>
<td><dsp:valueof param="element.readable"/></td>
<td><dsp:valueof param="element.writable"/></td>
<td><dsp:valueof param="element.required"/></td>
<td><dsp:valueof param="element.expert"/></td>
<td><dsp:valueof param="element.hidden"/></td>
<td><dsp:valueof param="element.preferred"/></td>
<td><dsp:valueof param="element.shortDescription"/></td>
<tr>
</dsp:oparam>
<dsp:oparam name="outputEnd">
</table>
</dsp:oparam>
</dsp:droplet>
</dsp:oparam>
</dsp:droplet>
</body></html>
</dsp:page>
