javax.servlet.ServletContextAttributeEvent Java Examples

@SuppressWarnings("unchecked")
@Override
public void attributeAdded(ServletContextAttributeEvent arg0) {
	if(userMap == null){
		userMap = (Map<Integer, WsOutbound>) arg0.getServletContext().getAttribute("OnLineList");
	}
	//System.out.println("listener==>attributeAdded");
	Enumeration<String> att = arg0.getServletContext().getAttributeNames();
	while(att.hasMoreElements()){
		String next = att.nextElement();
		if(next.startsWith("action")){
				ServerMsg message = (ServerMsg) arg0.getServletContext().getAttribute(next);
			if(message != null){
			arg0.getServletContext().removeAttribute(next);
			doAction(message);
			}
		}
	}
}
 

/**
 * Handle attribute added event.
 *
 * @param event the event.
 */
@Override
public void attributeAdded(ServletContextAttributeEvent event) {
    if (event.getName().equals("attributeAdded")) {
        event.getServletContext().setAttribute("attributeAdded2", true);
    }
}
 

/**
 * Record the fact that a servlet context attribute was removed.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeRemoved(ServletContextAttributeEvent event) {

    log("attributeRemoved('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Handle attribute removed event.
 *
 * @param event the event.
 */
@Override
public void attributeRemoved(ServletContextAttributeEvent event) {
    if (event.getName().equals("attributeRemoved")) {
        event.getServletContext().setAttribute("attributeRemoved2", true);
    }
}
 

/**
 * Handle attribute replaced event.
 *
 * @param event the event.
 */
@Override
public void attributeReplaced(ServletContextAttributeEvent event) {
    if (event.getName().equals("attributeReplaced")) {
        event.getServletContext().setAttribute("attributeReplaced2", true);
    }
}
 

public void servletContextAttributeAdded(final String name, final Object value) {
    if(!started) {
        return;
    }
    final ServletContextAttributeEvent sre = new ServletContextAttributeEvent(servletContext, name, value);
    for (int i = 0; i < servletContextAttributeListeners.length; ++i) {
        this.<ServletContextAttributeListener>get(servletContextAttributeListeners[i]).attributeAdded(sre);
    }
}
 

public void servletContextAttributeRemoved(final String name, final Object value) {
    if(!started) {
        return;
    }
    final ServletContextAttributeEvent sre = new ServletContextAttributeEvent(servletContext, name, value);
    for (int i = 0; i < servletContextAttributeListeners.length; ++i) {
        this.<ServletContextAttributeListener>get(servletContextAttributeListeners[i]).attributeRemoved(sre);
    }
}
 

public void servletContextAttributeReplaced(final String name, final Object value) {
    if(!started) {
        return;
    }
    final ServletContextAttributeEvent sre = new ServletContextAttributeEvent(servletContext, name, value);
    for (int i = 0; i < servletContextAttributeListeners.length; ++i) {
        this.<ServletContextAttributeListener>get(servletContextAttributeListeners[i]).attributeReplaced(sre);
    }
}
 

/**
 * Record the fact that a servlet context attribute was added.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeAdded(ServletContextAttributeEvent event) {

    log("attributeAdded('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was removed.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeRemoved(ServletContextAttributeEvent event) {

    log("attributeRemoved('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was replaced.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeReplaced(ServletContextAttributeEvent event) {

    log("attributeReplaced('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was added.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeAdded(ServletContextAttributeEvent event) {

    log("attributeAdded('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was removed.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeRemoved(ServletContextAttributeEvent event) {

    log("attributeRemoved('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was replaced.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeReplaced(ServletContextAttributeEvent event) {

    log("attributeReplaced('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was added.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeAdded(ServletContextAttributeEvent event) {

    log("attributeAdded('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was removed.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeRemoved(ServletContextAttributeEvent event) {

    log("attributeRemoved('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was replaced.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeReplaced(ServletContextAttributeEvent event) {

    log("attributeReplaced('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

public void servletContextAttributeReplaced(final String name, final Object value) {
    if(!started) {
        return;
    }
    final ServletContextAttributeEvent sre = new ServletContextAttributeEvent(servletContext, name, value);
    for (int i = 0; i < servletContextAttributeListeners.length; ++i) {
        this.<ServletContextAttributeListener>get(servletContextAttributeListeners[i]).attributeReplaced(sre);
    }
}
 

public void servletContextAttributeRemoved(final String name, final Object value) {
    if(!started) {
        return;
    }
    final ServletContextAttributeEvent sre = new ServletContextAttributeEvent(servletContext, name, value);
    for (int i = 0; i < servletContextAttributeListeners.length; ++i) {
        this.<ServletContextAttributeListener>get(servletContextAttributeListeners[i]).attributeRemoved(sre);
    }
}
 

public void servletContextAttributeAdded(final String name, final Object value) {
    if(!started) {
        return;
    }
    final ServletContextAttributeEvent sre = new ServletContextAttributeEvent(servletContext, name, value);
    for (int i = 0; i < servletContextAttributeListeners.length; ++i) {
        this.<ServletContextAttributeListener>get(servletContextAttributeListeners[i]).attributeAdded(sre);
    }
}
 

/**
 * Record the fact that a servlet context attribute was replaced.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeReplaced(ServletContextAttributeEvent event) {

    log("attributeReplaced('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was removed.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeRemoved(ServletContextAttributeEvent event) {

    log("attributeRemoved('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was added.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeAdded(ServletContextAttributeEvent event) {

    log("attributeAdded('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

/**
 * Record the fact that a servlet context attribute was replaced.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeReplaced(ServletContextAttributeEvent event) {

    log("attributeReplaced('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

@Override
public void removeAttribute(String name) {

    Object value = null;

    // Remove the specified attribute
    // Check for read only attribute
    if (readOnlyAttributes.containsKey(name)){
        return;
    }
    value = attributes.remove(name);
    if (value == null) {
        return;
    }

    // Notify interested application event listeners
    Object listeners[] = context.getApplicationEventListeners();
    if ((listeners == null) || (listeners.length == 0)) {
        return;
    }
    ServletContextAttributeEvent event = new ServletContextAttributeEvent(
            context.getServletContext(), name, value);
    for (Object obj : listeners) {
        if (!(obj instanceof ServletContextAttributeListener)) {
            continue;
        }
        ServletContextAttributeListener listener = (ServletContextAttributeListener) obj;
        try {
            context.fireContainerEvent("beforeContextAttributeRemoved", listener);
            listener.attributeRemoved(event);
            context.fireContainerEvent("afterContextAttributeRemoved", listener);
        } catch (Throwable t) {
            ExceptionUtils.handleThrowable(t);
            context.fireContainerEvent("afterContextAttributeRemoved", listener);
            // FIXME - should we do anything besides log these?
            log(sm.getString("applicationContext.attributeEvent"), t);
        }
    }
}
 

/**
 * Record the fact that a servlet context attribute was added.
 *
 * @param event The servlet context attribute event
 */
@Override
public void attributeAdded(ServletContextAttributeEvent event) {

    log("attributeAdded('" + event.getName() + "', '" +
            event.getValue() + "')");

}
 

@Override
public void attributeAdded(final ServletContextAttributeEvent event) {
    servletContextAttributeEvent = event;
}
 

/**
 * Remove the context attribute with the specified name, if any.
 *
 * @param name Name of the context attribute to be removed
 */
@Override
public void removeAttribute(String name) {

    Object value = null;

    // Remove the specified attribute
    // Check for read only attribute
    if (readOnlyAttributes.containsKey(name)){
        return;
    }
    value = attributes.remove(name);
    if (value == null) {
        return;
    }

    // Notify interested application event listeners
    Object listeners[] = context.getApplicationEventListeners();
    if ((listeners == null) || (listeners.length == 0))
        return;
    ServletContextAttributeEvent 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 {
            context.fireContainerEvent("beforeContextAttributeRemoved",
                                       listener);
            listener.attributeRemoved(event);
            context.fireContainerEvent("afterContextAttributeRemoved",
                                       listener);
        } catch (Throwable t) {
            ExceptionUtils.handleThrowable(t);
            context.fireContainerEvent("afterContextAttributeRemoved",
                                       listener);
            // FIXME - should we do anything besides log these?
            log(sm.getString("applicationContext.attributeEvent"), t);
        }
    }

}
 

@Override
public void attributeAdded(final ServletContextAttributeEvent scab) {
	LOGGER.info(String.format("Added attribute '%s' with value '%s'",scab.getName(),scab.getValue()));
}
 

@Override
public void attributeRemoved(final ServletContextAttributeEvent scab) {
	LOGGER.info(String.format("Deleted attribute '%s' with value '%s'",scab.getName(),scab.getValue()));
}