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package com.sun.grizzly.http.servlet;
import java.util.Enumeration;
import java.util.List;
import java.util.logging.Level;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpSessionAttributeListener;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionBindingListener;
import javax.servlet.http.HttpSessionContext;
import javax.servlet.http.HttpSessionEvent;
import javax.servlet.http.HttpSessionListener;
import com.sun.grizzly.tcp.http11.GrizzlySession;
import com.sun.grizzly.util.LoggerUtils;
/**
* Basic {@link HttpSession} based on {@link GrizzlySession} support.
*
* @author Jeanfrancois Arcand
*/
public class HttpSessionImpl implements HttpSession {
/**
* The real session objecty
*/
private GrizzlySession session;
/**
* The ServletContext.
*/
private ServletContextImpl contextImpl;
/**
* When this session was created.
*/
private Long creationTime;
/**
* Last time the session was accessed.
*/
private Long lastAccessed;
/**
* Is this session new.
*/
private boolean isNew = true;
/**
* Create an HttpSession.
* @param contextImpl
*/
public HttpSessionImpl(ServletContextImpl contextImpl) {
this.contextImpl = contextImpl;
creationTime = System.currentTimeMillis();
lastAccessed = creationTime;
}
/**
* {@inheritDoc}
*/
public long getCreationTime() {
return creationTime;
}
/**
* {@inheritDoc}
*/
public String getId() {
return session.getIdInternal();
}
/**
* {@inheritDoc}
*/
public long getLastAccessedTime() {
return lastAccessed;
}
/**
* Reset the timestamp.
*/
protected void access() {
lastAccessed = System.currentTimeMillis();
session.setTimestamp(lastAccessed);
isNew = false;
}
/**
* {@inheritDoc}
*/
public ServletContext getServletContext() {
return contextImpl;
}
/**
* {@inheritDoc}
*/
public void setMaxInactiveInterval(int sessionTimeout) {
session.setTimestamp(sessionTimeout);
}
/**
* {@inheritDoc}
*/
public int getMaxInactiveInterval() {
return (int) session.getSessionTimeout();
}
/**
* {@inheritDoc}
*/
public HttpSessionContext getSessionContext() {
return null;
}
/**
* {@inheritDoc}
*/
public Object getAttribute(String key) {
return session.getAttribute(key);
}
/**
* {@inheritDoc}
*/
public Object getValue(String value) {
return session.getAttribute(value);
}
/**
* {@inheritDoc}
*/
public Enumeration getAttributeNames() {
return session.atttibutes().keys();
}
/**
* {@inheritDoc}
*/
public String[] getValueNames() {
return session.atttibutes().entrySet().toArray(new String[0]);
}
/**
* {@inheritDoc}
*/
public void setAttribute(String key, Object value) {
// Null value is the same as removeAttribute()
if (value == null) {
removeAttribute(key);
return;
}
Object unbound = session.getAttribute(key);
session.setAttribute(key, value);
// Call the valueUnbound() method if necessary
if ((unbound != null) && (unbound != value) &&
(unbound instanceof HttpSessionBindingListener)) {
try {
((HttpSessionBindingListener) unbound).valueUnbound(new HttpSessionBindingEvent(this, key));
} catch (Throwable t) {
LoggerUtils.getLogger().log(Level.WARNING, "", t);
}
}
// Construct an event with the new value
HttpSessionBindingEvent event = null;
// Call the valueBound() method if necessary
if (value instanceof HttpSessionBindingListener) {
if (value != unbound) {
event = new HttpSessionBindingEvent(this, key, value);
try {
((HttpSessionBindingListener) value).valueBound(event);
} catch (Throwable t) {
LoggerUtils.getLogger().log(Level.WARNING, "", t);
}
}
}
// Notify interested application event listeners
List listeners = contextImpl.getListeners();
if (listeners.size() == 0) {
return;
}
for (int i = 0; i < listeners.size(); i++) {
if (!(listeners.get(i) instanceof HttpSessionAttributeListener)) {
continue;
}
HttpSessionAttributeListener listener =
(HttpSessionAttributeListener) listeners.get(i);
try {
if (unbound != null) {
if (event == null) {
event = new HttpSessionBindingEvent(this, key, unbound);
}
listener.attributeReplaced(event);
} else {
if (event == null) {
event = new HttpSessionBindingEvent(this, key, value);
}
listener.attributeAdded(event);
}
} catch (Throwable t) {
LoggerUtils.getLogger().log(Level.WARNING, "", t);
}
}
}
/**
* {@inheritDoc}
*/
public void putValue(String key, Object value) {
setAttribute(key, value);
}
/**
* {@inheritDoc}
*/
public void removeAttribute(String key) {
Object value = session.removeAttribute(key);
if (value == null) {
return;
}
// Call the valueUnbound() method if necessary
HttpSessionBindingEvent event = null;
if (value instanceof HttpSessionBindingListener) {
event = new HttpSessionBindingEvent(this,key, value);
((HttpSessionBindingListener) value).valueUnbound(event);
}
List listeners = contextImpl.getListeners();
if (listeners.size() == 0)
return;
for (int i = 0; i < listeners.size(); i++) {
if (!(listeners.get(i) instanceof HttpSessionAttributeListener))
continue;
HttpSessionAttributeListener listener =
(HttpSessionAttributeListener) listeners.get(i);
try {
if (event == null) {
event = new HttpSessionBindingEvent
(this, key, value);
}
listener.attributeRemoved(event);
} catch (Throwable t) {
LoggerUtils.getLogger().log(Level.WARNING, "", t);
}
}
}
/**
* {@inheritDoc}
*/
public void removeValue(String key) {
removeAttribute(key);
}
/**
* {@inheritDoc}
*/
public synchronized void invalidate() {
session.atttibutes().clear();
creationTime = 0L;
isNew = true;
List listeners = contextImpl.getListeners();
if (listeners.size() > 0) {
HttpSessionEvent event =
new HttpSessionEvent(this);
for (int i = 0; i < listeners.size(); i++) {
Object listenerObj = listeners.get(i);
int j = (listeners.size() - 1) - i;
if (!(listenerObj instanceof HttpSessionListener)) {
continue;
}
HttpSessionListener listener =
(HttpSessionListener) listenerObj;
try {
listener.sessionDestroyed(event);
} catch (Throwable t) {
LoggerUtils.getLogger().log(Level.WARNING, "", t);
}
}
}
}
/**
* {@inheritDoc}
*/
public boolean isNew() {
return isNew;
}
/**
* Set the {@link GrizzlySession}
*/
protected void setSession(GrizzlySession session) {
this.session = session;
}
/**
* Invoke to notify all registered {@link HttpSessionListener} of the
* session has just been created.
*/
protected void notifyNew() {
List listeners = contextImpl.getListeners();
if (listeners.size() > 0) {
HttpSessionEvent event =
new HttpSessionEvent(this);
for (int i = 0; i < listeners.size(); i++) {
Object listenerObj = listeners.get(i);
if (!(listenerObj instanceof HttpSessionListener)) {
continue;
}
HttpSessionListener listener =
(HttpSessionListener) listenerObj;
try {
listener.sessionCreated(event);
} catch (Throwable t) {
LoggerUtils.getLogger().log(Level.WARNING, "", t);
}
}
}
}
}
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