Example usage for javax.servlet ServletContextAttributeEvent ServletContextAttributeEvent

Introduction

In this page you can find the example usage for javax.servlet ServletContextAttributeEvent ServletContextAttributeEvent.

Prototype

public ServletContextAttributeEvent(ServletContext source, String name, Object value) 

Source Link

Document

Constructs a ServletContextAttributeEvent from the given ServletContext, attribute name, and attribute value.

Usage

From source file:org.ireland.jnetty.webapp.ServletContextImpl.java

/**
 * Sets an application attribute.//w w  w. j a  v  a  2s  .  com
 * 
 * @param name
 *            the name of the attribute
 * @param value
 *            the value of the attribute
 */
@Override
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(e.toString(), e);
            }
        }
    }
}

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From source file:org.ireland.jnetty.webapp.ServletContextImpl.java

/**
 * Removes an attribute from the servlet context.
 * //from  w ww.ja v a 2 s  .co m
 * @param name
 *            the name of the attribute to remove.
 */
@Override
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.debug(e.toString(), e);
            }
        }
    }
}

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From source file:net.lightbody.bmp.proxy.jetty.jetty.servlet.WebApplicationHandler.java

public synchronized void setContextAttribute(String name, Object value) {
    Object old = super.getContextAttribute(name);
    super.setContextAttribute(name, value);

    if (_contextAttributeListeners != null) {
        ServletContextAttributeEvent event = new ServletContextAttributeEvent(getServletContext(), name,
                old != null ? old : value);
        for (int i = 0; i < LazyList.size(_contextAttributeListeners); i++) {
            ServletContextAttributeListener l = (ServletContextAttributeListener) LazyList
                    .get(_contextAttributeListeners, i);
            if (old == null)
                l.attributeAdded(event);
            else if (value == null)
                l.attributeRemoved(event);
            else//from  ww w .  ja  v  a2s.c om
                l.attributeReplaced(event);
        }
    }
}

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From source file:net.lightbody.bmp.proxy.jetty.jetty.servlet.WebApplicationHandler.java

public synchronized void removeContextAttribute(String name) {
    Object old = super.getContextAttribute(name);
    super.removeContextAttribute(name);

    if (old != null && _contextAttributeListeners != null) {
        ServletContextAttributeEvent event = new ServletContextAttributeEvent(getServletContext(), name, old);
        for (int i = 0; i < LazyList.size(_contextAttributeListeners); i++) {
            ServletContextAttributeListener l = (ServletContextAttributeListener) LazyList
                    .get(_contextAttributeListeners, i);
            l.attributeRemoved(event);// w  ww  .  j  ava  2s . c  o m
        }
    }
}

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