portletsession.java

来自「jetspeed源代码」· Java 代码 · 共 161 行

/* ====================================================================
 * The Apache Software License, Version 1.1
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 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
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 *    if and wherever such third-party acknowledgments normally appear.
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 *
 * This software consists of voluntary contributions made by many
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 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package org.apache.jetspeed.portlet;

import org.apache.jetspeed.portlet.event.MessageEvent;
import org.apache.jetspeed.portlet.event.MessageListener;

import java.io.InputStream;
import java.io.IOException;

import java.util.Date;
import java.util.Locale;
import java.util.Enumeration;

/**
 ** The <CODE>PortletSession</CODE> holds the user-specific data that
 ** the portlet needs to personalize the one global portlet instance.
 ** Together with the portlet, the portlet session constitutes the
 ** virtual instance of the portlet.
 **
 ** @see   Portlet
 **
 ** @author   <A HREF="mailto:[e-mail]">Thomas F. Boehme</A>
 **/

public interface PortletSession
{
    /**
     ** Returns the user object. The user object contains useful
     ** information about the user and his or her preferences.
     **
     ** @return   the user profile
     **/

    public User getUser ();

    /**
     ** Returns the point of time that this session was created. Essentially,
     ** this will also be the time when the user logged in. The time is
     ** returned as the number of milliseconds since January 1, 1970 GMT.
     **
     ** @return   the time of creation
     **/

    public long getCreationTime ();

    /**
     ** Returns the point of time that this session was last accessed. The
     ** time is returned as the number of milliseconds since
     ** January 1, 1970 GMT.
     **
     ** @return   the time of the last access
     **/

    public long getLastAccessedTime ();

    /**
     ** Associates an attribute with the given name and value
     ** with this session. If a portlet needs to communicate
     ** information to embedded servlets or JSP, this methods
     ** can used carry the information along.
     **
     ** <P>
     ** The portlet provider should take care that the
     ** the namespace of attribute names is not unnecessarily
     ** polluted. It is recommended to prefix all attributes
     ** the package and class name of the portlet that
     ** makes use of this method.
     **
     ** @param   name
     **          the attribute name
     ** @param   value
     **          the attribute value
     **/

    public void setAttribute (String name, Object value);

    /**
     ** Returns the value of the attribute with the given name,
     ** or <CODE>null</CODE> if no attribute with the given name exists.
     **
     ** @param   name
     **          the attribute name
     **
     ** @return   the attribute value
     **/

    public Object getAttribute (String name);

    /**
     ** Returns an enumeration of names of all attributes available to
     ** this session. This method returns an empty enumeration if the
     ** session has no attributes available to it.
     **
     ** @return   an enumeration of attribute names
     **/

    public Enumeration getAttributeNames ();

    /**
     ** Removes the attribute with the given name.
     **
     ** @param   name
     **          the name of attribute to be removed
     **/

    public void removeAttribute (String name);
}