public void removeAttribute(String name) {
if (SecurityUtil.isPackageProtectionEnabled()) {
doPrivileged("removeAttribute", new Object[] {name});
} else {
context.removeAttribute(name);
}
}
/**
* Bind the specified value with the specified context attribute name, replacing any existing
* value for that name.
*
* @param name Attribute name to be bound
* @param value New attribute value to be bound
*/
public void setAttribute(String name, Object value) {
// Name cannot be null
if (name == null)
throw new IllegalArgumentException(sm.getString("applicationContext.setAttribute.namenull"));
// Null value is the same as removeAttribute()
if (value == null) {
removeAttribute(name);
return;
}
Object oldValue = null;
boolean replaced = false;
// Add or replace the specified attribute
synchronized (attributes) {
// Check for read only attribute
if (readOnlyAttributes.containsKey(name)) return;
oldValue = attributes.get(name);
if (oldValue != null) replaced = true;
attributes.put(name, value);
}
// Notify interested application event listeners
Object listeners[] = context.getApplicationListeners();
if ((listeners == null) || (listeners.length == 0)) return;
ServletContextAttributeEvent event = null;
if (replaced)
event = new ServletContextAttributeEvent(context.getServletContext(), name, oldValue);
else event = new ServletContextAttributeEvent(context.getServletContext(), name, value);
for (int i = 0; i < listeners.length; i++) {
if (!(listeners[i] instanceof ServletContextAttributeListener)) continue;
ServletContextAttributeListener listener = (ServletContextAttributeListener) listeners[i];
try {
if (replaced) {
context.fireContainerEvent("beforeContextAttributeReplaced", listener);
listener.attributeReplaced(event);
context.fireContainerEvent("afterContextAttributeReplaced", listener);
} else {
context.fireContainerEvent("beforeContextAttributeAdded", listener);
listener.attributeAdded(event);
context.fireContainerEvent("afterContextAttributeAdded", listener);
}
} catch (Throwable t) {
if (replaced) context.fireContainerEvent("afterContextAttributeReplaced", listener);
else context.fireContainerEvent("afterContextAttributeAdded", listener);
// FIXME - should we do anything besides log these?
log(sm.getString("applicationContext.attributeEvent"), t);
}
}
}
/** Clear all application-created attributes. */
public void clearAttributes() {
// Create list of attributes to be removed
ArrayList list = new ArrayList();
synchronized (attributes) {
Iterator iter = attributes.keySet().iterator();
while (iter.hasNext()) {
list.add(iter.next());
}
}
// Remove application originated attributes
// (read only attributes will be left in place)
Iterator keys = list.iterator();
while (keys.hasNext()) {
String key = (String) keys.next();
removeAttribute(key);
}
}
@Override
public void removeAttribute(String name) throws RemoteException, RemoteException {
tomcatAttributes.remove(name);
// do nothing
super.removeAttribute(name);
}