Examples with HttpSessionBindingListener javax.servlet.http.HttpSessionBindingListener used on opensource projects

Example 1 with HttpSessionBindingListener

use of javax.servlet.http.HttpSessionBindingListener in project tomcat by apache.

the class StandardSessionContext method setAttribute.

/**
     * 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
     * @param notify whether to notify session listeners
     * @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, boolean notify) {
    // 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;
    }
    // Validate our current state
    if (!isValidInternal()) {
        throw new IllegalStateException(sm.getString("standardSession.setAttribute.ise", getIdInternal()));
    }
    if ((manager != null) && manager.getContext().getDistributable() && !isAttributeDistributable(name, value) && !exclude(name, value)) {
        throw new IllegalArgumentException(sm.getString("standardSession.setAttribute.iae", name));
    }
    // Construct an event with the new value
    HttpSessionBindingEvent event = null;
    // Call the valueBound() method if necessary
    if (notify && value instanceof HttpSessionBindingListener) {
        // Don't call any notification if replacing with the same value
        Object oldValue = attributes.get(name);
        if (value != oldValue) {
            event = new HttpSessionBindingEvent(getSession(), name, value);
            try {
                ((HttpSessionBindingListener) value).valueBound(event);
            } catch (Throwable t) {
                manager.getContext().getLogger().error(sm.getString("standardSession.bindingEvent"), t);
            }
        }
    }
    // Replace or add this attribute
    Object unbound = attributes.put(name, value);
    // Call the valueUnbound() method if necessary
    if (notify && (unbound != null) && (unbound != value) && (unbound instanceof HttpSessionBindingListener)) {
        try {
            ((HttpSessionBindingListener) unbound).valueUnbound(new HttpSessionBindingEvent(getSession(), name));
        } catch (Throwable t) {
            ExceptionUtils.handleThrowable(t);
            manager.getContext().getLogger().error(sm.getString("standardSession.bindingEvent"), t);
        }
    }
    if (!notify)
        return;
    // Notify interested application event listeners
    Context context = manager.getContext();
    Object[] listeners = context.getApplicationEventListeners();
    if (listeners == null)
        return;
    for (int i = 0; i < listeners.length; i++) {
        if (!(listeners[i] instanceof HttpSessionAttributeListener))
            continue;
        HttpSessionAttributeListener listener = (HttpSessionAttributeListener) listeners[i];
        try {
            if (unbound != null) {
                context.fireContainerEvent("beforeSessionAttributeReplaced", listener);
                if (event == null) {
                    event = new HttpSessionBindingEvent(getSession(), name, unbound);
                }
                listener.attributeReplaced(event);
                context.fireContainerEvent("afterSessionAttributeReplaced", listener);
            } else {
                context.fireContainerEvent("beforeSessionAttributeAdded", listener);
                if (event == null) {
                    event = new HttpSessionBindingEvent(getSession(), name, value);
                }
                listener.attributeAdded(event);
                context.fireContainerEvent("afterSessionAttributeAdded", listener);
            }
        } catch (Throwable t) {
            ExceptionUtils.handleThrowable(t);
            try {
                if (unbound != null) {
                    context.fireContainerEvent("afterSessionAttributeReplaced", listener);
                } else {
                    context.fireContainerEvent("afterSessionAttributeAdded", listener);
                }
            } catch (Exception e) {
            // Ignore
            }
            manager.getContext().getLogger().error(sm.getString("standardSession.attributeEvent"), t);
        }
    }
}

Example 2 with HttpSessionBindingListener

use of javax.servlet.http.HttpSessionBindingListener in project tomcat by apache.

the class StandardSessionContext method removeAttributeInternal.

/**
     * 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?
     */
protected void removeAttributeInternal(String name, boolean notify) {
    // Avoid NPE
    if (name == null)
        return;
    // Remove this attribute from our collection
    Object value = attributes.remove(name);
    // Do we need to do valueUnbound() and attributeRemoved() notification?
    if (!notify || (value == null)) {
        return;
    }
    // Call the valueUnbound() method if necessary
    HttpSessionBindingEvent event = null;
    if (value instanceof HttpSessionBindingListener) {
        event = new HttpSessionBindingEvent(getSession(), name, value);
        ((HttpSessionBindingListener) value).valueUnbound(event);
    }
    // Notify interested application event listeners
    Context context = manager.getContext();
    Object[] listeners = context.getApplicationEventListeners();
    if (listeners == null)
        return;
    for (int i = 0; i < listeners.length; i++) {
        if (!(listeners[i] instanceof HttpSessionAttributeListener))
            continue;
        HttpSessionAttributeListener listener = (HttpSessionAttributeListener) listeners[i];
        try {
            context.fireContainerEvent("beforeSessionAttributeRemoved", listener);
            if (event == null) {
                event = new HttpSessionBindingEvent(getSession(), name, value);
            }
            listener.attributeRemoved(event);
            context.fireContainerEvent("afterSessionAttributeRemoved", listener);
        } catch (Throwable t) {
            ExceptionUtils.handleThrowable(t);
            try {
                context.fireContainerEvent("afterSessionAttributeRemoved", listener);
            } catch (Exception e) {
            // Ignore
            }
            manager.getContext().getLogger().error(sm.getString("standardSession.attributeEvent"), t);
        }
    }
}

Example 3 with HttpSessionBindingListener

use of javax.servlet.http.HttpSessionBindingListener in project spring-framework by spring-projects.

the class MockHttpSession method removeAttribute.

@Override
public void removeAttribute(String name) {
    assertIsValid();
    Assert.notNull(name, "Attribute name must not be null");
    Object value = this.attributes.remove(name);
    if (value instanceof HttpSessionBindingListener) {
        ((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
    }
}

Example 4 with HttpSessionBindingListener

use of javax.servlet.http.HttpSessionBindingListener in project gocd by gocd.

the class MockHttpSession method serializeState.

/**
 * Serialize the attributes of this session into an object that can be
 * turned into a byte array with standard Java serialization.
 * @return a representation of this session's serialized state
 */
public Serializable serializeState() {
    HashMap<String, Serializable> state = new HashMap<>();
    for (Iterator<Map.Entry<String, Object>> it = this.attributes.entrySet().iterator(); it.hasNext(); ) {
        Map.Entry<String, Object> entry = it.next();
        String name = entry.getKey();
        Object value = entry.getValue();
        it.remove();
        if (value instanceof Serializable) {
            state.put(name, (Serializable) value);
        } else {
            // unbind the attribute in this case.
            if (value instanceof HttpSessionBindingListener) {
                ((HttpSessionBindingListener) value).valueUnbound(new HttpSessionBindingEvent(this, name, value));
            }
        }
    }
    return state;
}

Example 5 with HttpSessionBindingListener

use of javax.servlet.http.HttpSessionBindingListener in project felix by apache.

the class HttpSessionWrapper method setAttribute.

@Override
public void setAttribute(final String name, final Object value) {
    this.checkInvalid();
    if (value == null) {
        this.removeAttribute(name);
        return;
    }
    final Object oldValue = this.getAttribute(name);
    // wrap http session binding listener to avoid container calling it!
    if (value instanceof HttpSessionBindingListener) {
        this.delegate.setAttribute(this.getKey(name), new SessionBindingValueListenerWrapper((HttpSessionBindingListener) value));
    } else {
        this.delegate.setAttribute(this.getKey(name), value);
    }
    if (value instanceof HttpSessionBindingListener) {
        ((HttpSessionBindingListener) value).valueBound(new HttpSessionBindingEvent(this, name));
    }
    if (this.context.getHttpSessionAttributeListener() != null) {
        if (oldValue != null) {
            this.context.getHttpSessionAttributeListener().attributeReplaced(new HttpSessionBindingEvent(this, name, oldValue));
        } else {
            this.context.getHttpSessionAttributeListener().attributeAdded(new HttpSessionBindingEvent(this, name, value));
        }
    }
}