/**
* Removes an attribute from the servlet context.
*
* @param name the name of the attribute to remove.
*/
public void removeAttribute(String name) {
Object oldValue;
synchronized (_attributes) {
oldValue = _attributes.remove(name);
}
// Call any listeners
if (_applicationAttributeListeners != null) {
ServletContextAttributeEvent event;
event = new ServletContextAttributeEvent(this, name, oldValue);
for (int i = 0; i < _applicationAttributeListeners.size(); i++) {
ServletContextAttributeListener listener;
Object objListener = _applicationAttributeListeners.get(i);
listener = (ServletContextAttributeListener) objListener;
try {
listener.attributeRemoved(event);
} catch (Throwable e) {
log.log(Level.FINE, e.toString(), e);
}
}
}
}
/**
* Sets an application attribute.
*
* @param name the name of the attribute
* @param value the value of the attribute
*/
public void setAttribute(String name, Object value) {
Object oldValue;
synchronized (_attributes) {
if (value != null) oldValue = _attributes.put(name, value);
else oldValue = _attributes.remove(name);
}
// Call any listeners
if (_applicationAttributeListeners != null) {
ServletContextAttributeEvent event;
if (oldValue != null) event = new ServletContextAttributeEvent(this, name, oldValue);
else event = new ServletContextAttributeEvent(this, name, value);
for (int i = 0; i < _applicationAttributeListeners.size(); i++) {
ServletContextAttributeListener listener;
Object objListener = _applicationAttributeListeners.get(i);
listener = (ServletContextAttributeListener) objListener;
try {
if (oldValue != null) listener.attributeReplaced(event);
else listener.attributeAdded(event);
} catch (Exception e) {
log.log(Level.FINE, e.toString(), e);
}
}
}
}