deltasession.java

This temp directory is used by the JVM for temporary file storage. The JVM is configured to use thi

        synchronized (notes) {
            notes.remove(name);
        }

    }


    /**
     * Remove a session event listener from this component.
     */
    public void removeSessionListener(SessionListener listener) {

        synchronized (listeners) {
            listeners.remove(listener);
        }

    }


    /**
     * Bind an object to a specified name in the internal notes associated
     * with this session, replacing any existing binding for this name.
     *
     * @param name Name to which the object should be bound
     * @param value Object to be bound to the specified name
     */
    public void setNote(String name, Object value) {

        synchronized (notes) {
            notes.put(name, value);
        }

    }


    /**
     * Return a string representation of this object.
     */
    public String toString() {

        StringBuffer sb = new StringBuffer();
        sb.append("StandardSession[");
        sb.append(id);
        sb.append("]");
        return (sb.toString());

    }


    // ------------------------------------------------ Session Package Methods


    /**
     * Read a serialized version of the contents of this session object from
     * the specified object input stream, without requiring that the
     * StandardSession itself have been serialized.
     *
     * @param stream The object input stream to read from
     *
     * @exception ClassNotFoundException if an unknown class is specified
     * @exception IOException if an input/output error occurs
     */
    public void readObjectData(ObjectInputStream stream)
        throws ClassNotFoundException, IOException {

        readObject(stream);

    }


    /**
     * Write a serialized version of the contents of this session object to
     * the specified object output stream, without requiring that the
     * StandardSession itself have been serialized.
     *
     * @param stream The object output stream to write to
     *
     * @exception IOException if an input/output error occurs
     */
    public void writeObjectData(ObjectOutputStream stream)
        throws IOException {

        writeObject(stream);

    }
    
    public void resetDeltaRequest() {
        if ( deltaRequest == null ) {
            deltaRequest = new DeltaRequest(getId(),false);
        } else {
            deltaRequest.reset();
            deltaRequest.setSessionId(getId());
        }
    }
    
    public DeltaRequest getDeltaRequest() {
        if ( deltaRequest == null ) resetDeltaRequest();
        return deltaRequest;
    }


    // ------------------------------------------------- HttpSession Properties


    /**
     * Return the time when this session was created, in milliseconds since
     * midnight, January 1, 1970 GMT.
     *
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     */
    public long getCreationTime() {

       if (!expiring && !isValid)
            throw new IllegalStateException
                (sm.getString("standardSession.getCreationTime.ise"));

        return (this.creationTime);

    }


    /**
     * Return the ServletContext to which this session belongs.
     */
    public ServletContext getServletContext() {

        if (manager == null)
            return (null);
        Context context = (Context) manager.getContainer();
        if (context == null)
            return (null);
        else
            return (context.getServletContext());

    }


    /**
     * Return the session context with which this session is associated.
     *
     * @deprecated As of Version 2.1, this method is deprecated and has no
     *  replacement.  It will be removed in a future version of the
     *  Java Servlet API.
     */
    public HttpSessionContext getSessionContext() {

        if (sessionContext == null)
            sessionContext = new StandardSessionContext();
        return (sessionContext);

    }


    // ----------------------------------------------HttpSession Public Methods


    /**
     * Return the object bound with the specified name in this session, or
     * <code>null</code> if no object is bound with that name.
     *
     * @param name Name of the attribute to be returned
     *
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     */
    public Object getAttribute(String name) {

        if (!isValid())
            throw new IllegalStateException
                (sm.getString("standardSession.getAttribute.ise"));

        synchronized (attributes) {
            return (attributes.get(name));
        }

    }


    /**
     * Return an <code>Enumeration</code> of <code>String</code> objects
     * containing the names of the objects bound to this session.
     *
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     */
    public Enumeration getAttributeNames() {

        if (!isValid())
            throw new IllegalStateException
                (sm.getString("standardSession.getAttributeNames.ise"));

        synchronized (attributes) {
            return (new Enumerator(attributes.keySet(), true));
        }

    }


    /**
     * Return the object bound with the specified name in this session, or
     * <code>null</code> if no object is bound with that name.
     *
     * @param name Name of the value to be returned
     *
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     *
     * @deprecated As of Version 2.2, this method is replaced by
     *  <code>getAttribute()</code>
     */
    public Object getValue(String name) {

        return (getAttribute(name));

    }


    /**
     * Return the set of names of objects bound to this session.  If there
     * are no such objects, a zero-length array is returned.
     *
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     *
     * @deprecated As of Version 2.2, this method is replaced by
     *  <code>getAttributeNames()</code>
     */
    public String[] getValueNames() {

        if (!isValid())
            throw new IllegalStateException
                (sm.getString("standardSession.getValueNames.ise"));

        return (keys());

    }


    /**
     * Invalidates this session and unbinds any objects bound to it.
     *
     * @exception IllegalStateException if this method is called on
     *  an invalidated session
     */
    public void invalidate() {

        if (!isValid())
            throw new IllegalStateException
                (sm.getString("standardSession.invalidate.ise"));

        // Cause this session to expire
        expire();

    }


    /**
     * Return <code>true</code> if the client does not yet know about the
     * session, or if the client chooses not to join the session.  For
     * example, if the server used only cookie-based sessions, and the client
     * has disabled the use of cookies, then a session would be new on each
     * request.
     *
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     */
    public boolean isNew() {

        if (!isValid())
            throw new IllegalStateException
                (sm.getString("standardSession.isNew.ise"));

        return (this.isNew);

    }



    /**
     * Bind an object to this session, using the specified name.  If an object
     * of the same name is already bound to this session, the object is
     * replaced.
     * <p>
     * After this method executes, and if the object implements
     * <code>HttpSessionBindingListener</code>, the container calls
     * <code>valueBound()</code> on the object.
     *
     * @param name Name to which the object is bound, cannot be null
     * @param value Object to be bound, cannot be null
     *
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     *
     * @deprecated As of Version 2.2, this method is replaced by
     *  <code>setAttribute()</code>
     */
    public void putValue(String name, Object value) {

        setAttribute(name, value);

    }


    /**
     * Remove the object bound with the specified name from this session.  If
     * the session does not have an object bound with this name, this method
     * does nothing.
     * <p>
     * After this method executes, and if the object implements
     * <code>HttpSessionBindingListener</code>, the container calls
     * <code>valueUnbound()</code> on the object.
     *
     * @param name Name of the object to remove from this session.
     *
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     */
    public void removeAttribute(String name) {

        removeAttribute(name, true);

    }


    /**
     * Remove the object bound with the specified name from this session.  If
     * the session does not have an object bound with this name, this method
     * does nothing.
     * <p>
     * After this method executes, and if the object implements
     * <code>HttpSessionBindingListener</code>, the container calls
     * <code>valueUnbound()</code> on the object.
     *
     * @param name Name of the object to remove from this session.
     * @param notify Should we notify interested listeners that this
     *  attribute is being removed?
     *
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     */
    public void removeAttribute(String name, boolean notify) {
        removeAttribute(name,notify,true);
    }
    
    public void removeAttribute(String name, boolean notify, boolean addDeltaRequest) {

        // Validate our current state
        if (!isValid())
            throw new IllegalStateException
                (sm.getString("standardSession.removeAttribute.ise"));
        removeAttributeInternal(name,notify,addDeltaRequest);
    }
    
    

    /**
     * Remove the object bound with the specified name from this session.  If
     * the session does not have an object bound with this name, this method
     * does nothing.
     * <p>
     * After this method executes, and if the object implements
     * <code>HttpSessionBindingListener</code>, the container calls
     * <code>valueUnbound()</code> on the object.
     *
     * @param name Name of the object to remove from this session.
     *
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     *
     * @deprecated As of Version 2.2, this method is replaced by
     *  <code>removeAttribute()</code>
     */
    public void removeValue(String name) {

        removeAttribute(name);

    }


    /**
     * Bind an object to this session, using the specified name.  If an object
     * of the same name is already bound to this session, the object is
     * replaced.
     * <p>
     * After this method executes, and if the object implements
     * <code>HttpSessionBindingListener</code>, the container calls
     * <code>valueBound()</code> on the object.
     *
     * @param name Name to which the object is bound, cannot be null
     * @param value Object to be bound, cannot be null
     *
     * @exception IllegalArgumentException if an attempt is made to add a
     *  non-serializable object in an environment marked distributable.
     * @exception IllegalStateException if this method is called on an
     *  invalidated session
     */
    public void setAttribute(String name, Object value) {
        setAttribute(name,value,true);
    }
    public void setAttribute(String name, Object value, boolean addDeltaRequest) {

        // Name cannot be null
        if (name == null)
            throw new IllegalArgumentException
                (sm.getString("standardSession.setAttribute.namenull"));

        // Null value is the same as removeAttribute()
        if (value == null) {
            removeAttribute(name);
            return;
        }

        if ( ! (value instanceof java.io.Serializable) ) {
            throw new IllegalArgumentException("Attribute ["+name+"] is not serializable");
        }
        
        if (addDeltaRequest && (deltaRequest!=null)) deltaRequest.setAttribute(name,value);

        // Validate our current state
        if (!isValid())
            throw new IllegalStateException
                (sm.getString("standardSession.setAttribute.ise"));
        if ((manager != null) && manager.getDistributable() &&
          !(value instanceof Serializable))
            throw new IllegalArgumentException
                (sm.getString("standardSession.setAttribute.iae"));

        
        // Construct an event with the new value
        HttpSessionBindingEvent event = null;
        
        // Call the valueBound() method if necessary
        if ( value instanceof HttpSessionBindingListener ) {
            event = new HttpSessionBindingEvent(this, name, value);
            try {
                ( (HttpSessionBindingListener) value).valueBound(event);
            } catch ( Exception x ) {
                log.error("Session binding listener throw an exception",x);
            }
        }