atg.droplet
Class IsNull
java.lang.Object
atg.nucleus.logging.VariableArgumentApplicationLoggingImpl
atg.nucleus.GenericService
atg.nucleus.TimedOperationService
atg.nucleus.servlet.ServletService
atg.nucleus.servlet.HttpServletService
atg.servlet.DynamoServlet
atg.droplet.IsNull
- All Implemented Interfaces:
- NameContextBindingListener, NameContextElement, NameResolver, AdminableService, ApplicationLogging, atg.nucleus.logging.ApplicationLoggingSender, atg.nucleus.logging.TraceApplicationLogging, VariableArgumentApplicationLogging, ComponentNameResolver, Service, ServiceListener, ParameterServlet, java.util.EventListener, javax.servlet.Servlet
public class IsNull
- extends DynamoServlet
The IsNull droplet conditionally servlet renders one of its parameters based on
the value of its value parameter. If the value is null then the output
parameter true
is rendered, otherwise the output parameter false
is serviced.
For Example:
<droplet bean="/atg/dynamo/droplet/IsNull">
<param name="value" value="param:someobject">
<oparam name="true">Some object is null</oparam>
<oparam name="false">Some object is NOT null</oparam>
</droplet>
Fields inherited from interface atg.nucleus.logging.TraceApplicationLogging |
DEFAULT_LOG_TRACE_STATUS |
Constructor Summary |
IsNull()
Constructs an instanceof IsNull |
Methods inherited from class atg.nucleus.GenericService |
addLogListener, createAdminServlet, doStartService, doStopService, getAbsoluteName, getAdminServlet, getLoggingForVlogging, getLogListenerCount, getLogListeners, getName, getNameContext, getNucleus, getRoot, getServiceConfiguration, getServiceInfo, isLoggingDebug, isLoggingError, isLoggingInfo, isLoggingTrace, isLoggingWarning, isRunning, logDebug, logDebug, logDebug, logError, logError, logError, logInfo, logInfo, logInfo, logTrace, logTrace, logTrace, logWarning, logWarning, logWarning, nameContextElementBound, nameContextElementUnbound, removeLogListener, reResolveThis, resolveName, resolveName, resolveName, resolveName, sendLogEvent, setLoggingDebug, setLoggingError, setLoggingInfo, setLoggingTrace, setLoggingWarning, setNucleus, setServiceInfo, startService, stopService |
Methods inherited from class atg.nucleus.logging.VariableArgumentApplicationLoggingImpl |
vlogDebug, vlogDebug, vlogDebug, vlogDebug, vlogError, vlogError, vlogError, vlogError, vlogInfo, vlogInfo, vlogInfo, vlogInfo, vlogTrace, vlogTrace, vlogTrace, vlogTrace, vlogWarning, vlogWarning, vlogWarning, vlogWarning |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
CLASS_VERSION
public static java.lang.String CLASS_VERSION
- Class version string
VALUE
public static final ParameterName VALUE
TRUE
public static final ParameterName TRUE
FALSE
public static final ParameterName FALSE
IsNull
public IsNull()
- Constructs an instanceof IsNull
service
public void service(DynamoHttpServletRequest pRequest,
DynamoHttpServletResponse pResponse)
throws javax.servlet.ServletException,
java.io.IOException
- Render the isNull switch
- Overrides:
service
in class DynamoServlet
- Parameters:
pRequest
- the request to be processedpResponse
- the response object for this request
- Throws:
javax.servlet.ServletException
- an application specific error occurred
processing this request
java.io.IOException
- an error occurred reading data from the request
or writing data to the response.