atg.droplet
Class BeanProperty

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.BeanProperty

All Implemented Interfaces:

NameContextBindingListener, NameContextElement, NameResolver, AdminableService, ApplicationLogging, atg.nucleus.logging.ApplicationLoggingSender, atg.nucleus.logging.TraceApplicationLogging, atg.nucleus.logging.VariableArgumentApplicationLogging, ComponentNameResolver, Service, ServiceListener, ParameterServlet, java.util.EventListener, javax.servlet.Servlet

public class BeanProperty
extends DynamoServlet

This servlet gets or sets a property in a bean. The bean is defined by the bean parameter. The property to get or set is defined by the propertyName parameter. The value may be set or read using the propertyValue parameter. In either case, the droplet renders an oparam named output.

Examples:

To set the property value, specify the new value using the propertyValue parameter, as in this example:

 <droplet bean="/atg/dynamo/droplet/BeanProperty">
   <param name="bean" value="param:myBean">
   <param name="propertyName" value="color">
   <param name="propertyValue" value="red">
 </droplet>
 

When setting property values the oparam need not be used, since there's no need to render output within the droplet's context.

To get the property value, leave the propertyValue parameter unset. The parameter will then take on the current value within the output oparam, as in this example:

 <droplet bean="/atg/dynamo/droplet/BeanProperty">
   <param name="bean" value="param:myBean">
   <param name="propertyName" value="color">
   <oparam name="output">
     The bean's color is <valueof param="propertyValue">unset</valueof>.
   </oparam>
 </droplet>
 

Dotted subproperty expressions of the form "a.b.c" are permitted when getting a property value, though not when setting one. When getting a value using subproperty expressions, if any intermediate property is null then propertyValue will also be null, as is the case when using DynamicBeans.

See Also:

DynamicBeans

Field Summary

static java.lang.String	BEAN
protected static java.lang.String	BEANRESOURCES
static java.lang.String	CLASS_VERSION Class version string
static java.lang.String	OUTPUT
static java.lang.String	PROPERTY
protected static java.util.ResourceBundle	sResourceBundle
static java.lang.String	VALUE

Fields inherited from class atg.servlet.DynamoServlet

mAllowCleanupRequest, mParameters

Fields inherited from class atg.nucleus.servlet.ServletService

SERVLET_INFO_KEY

Fields inherited from class atg.nucleus.GenericService

SERVICE_INFO_KEY

Fields inherited from interface atg.nucleus.logging.TraceApplicationLogging

DEFAULT_LOG_TRACE_STATUS

Fields inherited from interface atg.nucleus.logging.ApplicationLogging

DEFAULT_LOG_DEBUG_STATUS, DEFAULT_LOG_ERROR_STATUS, DEFAULT_LOG_INFO_STATUS, DEFAULT_LOG_WARNING_STATUS

Constructor Summary

BeanProperty()
Constructs an instanceof BeanProperty

Method Summary

void	service(DynamoHttpServletRequest pRequest, DynamoHttpServletResponse pResponse) Service the servlets request.
protected void	serviceGet(DynamoHttpServletRequest pRequest, DynamoHttpServletResponse pResponse, java.lang.Object pBean, java.lang.String pProperty, java.lang.Object pValue) Handles a request to get a property
protected void	serviceSet(DynamoHttpServletRequest pRequest, DynamoHttpServletResponse pResponse, java.lang.Object pBean, java.lang.String pProperty, java.lang.Object pValue) handles a request to set a property

Methods inherited from class atg.servlet.DynamoServlet

doDelete, doGet, doPost, doPut, getParameter, getParameters, getServletContext, service, service, setParameter

Methods inherited from class atg.nucleus.servlet.ServletService

destroy, getServletConfig, getServletInfo, init, setServletInfo

Methods inherited from class atg.nucleus.TimedOperationService

getAverageRequestHandlingTime, getHandledRequestCount, getRequestStartTime, getTotalRequestHandlingTime, isKeepingStatistics, notifyHandledRequest, resetStatistics, setKeepingStatistics

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, 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

Field Detail

CLASS_VERSION

public static java.lang.String CLASS_VERSION

Class version string

BEAN

public static final java.lang.String BEAN

See Also:

Constant Field Values

PROPERTY

public static final java.lang.String PROPERTY

See Also:

Constant Field Values

VALUE

public static final java.lang.String VALUE

See Also:

Constant Field Values

OUTPUT

public static final java.lang.String OUTPUT

See Also:

Constant Field Values

BEANRESOURCES

protected static final java.lang.String BEANRESOURCES

See Also:

Constant Field Values

sResourceBundle

protected static java.util.ResourceBundle sResourceBundle

Constructor Detail

BeanProperty

public BeanProperty()

Constructs an instanceof BeanProperty

Method Detail

service

public void service(DynamoHttpServletRequest pRequest,
                    DynamoHttpServletResponse pResponse)
             throws javax.servlet.ServletException,
                    java.io.IOException

Service the servlets request. If the input indicates a get request the serviceGet method is called if the input indicates a set request then the serviceSet method is called.

Overrides:

service in class DynamoServlet

Parameters:

pRequest - the servlet's request

pResponse - the servlet's response

Throws:

javax.servlet.ServletException - if there was an error while executing the code

java.io.IOException - if there was an error with servlet io

serviceGet

protected void serviceGet(DynamoHttpServletRequest pRequest,
                          DynamoHttpServletResponse pResponse,
                          java.lang.Object pBean,
                          java.lang.String pProperty,
                          java.lang.Object pValue)
                   throws javax.servlet.ServletException,
                          java.io.IOException

Handles a request to get a property

Parameters:

pRequest - the servlet's request

pResponse - the servlet's response

pBean - the bean to operate on

pProperty - the property to get

pValue - the value of this property

Throws:

javax.servlet.ServletException - if there was an error while executing the code

java.io.IOException - if there was an error with servlet io

serviceSet

protected void serviceSet(DynamoHttpServletRequest pRequest,
                          DynamoHttpServletResponse pResponse,
                          java.lang.Object pBean,
                          java.lang.String pProperty,
                          java.lang.Object pValue)
                   throws javax.servlet.ServletException,
                          java.io.IOException

handles a request to set a property

Parameters:

pRequest - the servlet's request

pResponse - the servlet's response

pBean - the bean to operate on

pProperty - the property to set

pValue - the value to set this property to

Throws:

javax.servlet.ServletException - if there was an error while executing the code

java.io.IOException - if there was an error with servlet io