portletrequest.java

portal越来越流行了

   *            given portlet mode
   *
   */

  public boolean isPortletModeAllowed(PortletMode mode);


  /**
   * Returns the current portlet mode of the portlet.
   *
   * @return   the portlet mode
   */

  public PortletMode getPortletMode ();


  /**
   * Returns the current window state of the portlet.
   *
   * @return   the window state
   */

  public WindowState getWindowState ();


  /**
   * Returns the preferences object associated with the portlet.
   *
   * @return the portlet preferences
   */
  public PortletPreferences getPreferences ();


  /**
   * Returns the current portlet session or, if there is no current session,
   * creates one and returns the new session.
   *  <p>
   * Creating a new portlet session will result in creating
   * a new <code>HttpSession</code> on which the portlet session is based on.
   *
   * @return the portlet session
   */

  public PortletSession getPortletSession ();


  /**
   * Returns the current portlet session or, if there is no current session
   * and the given flag is <CODE>true</CODE>, creates one and returns
   * the new session.
   * <P>
   * If the given flag is <CODE>false</CODE> and there is no current
   * portlet session, this method returns <CODE>null</CODE>.
   *  <p>
   * Creating a new portlet session will result in creating
   * a new <code>HttpSession</code> on which the portlet session is based on.
   * 
   * @param create
   *               <CODE>true</CODE> to create a new session, <BR>
   *               <CODE>false</CODE> to return <CODE>null</CODE> if there
   *               is no current session
   * @return the portlet session
   * 
   */

  public PortletSession getPortletSession (boolean create);


  /**
   * Returns the value of the specified request property
   * as a <code>String</code>. If the request did not include a property
   * of the specified name, this method returns <code>null</code>.
   * <p>
   * A portlet can access portal/portlet-container specific properties 
   * through this method and, if available, the
   * headers of the HTTP client request.
   * <p>
   * This method should only be used if the 
   * property has only one value. If the property might have
   * more than one value, use {@link #getProperties}.
   * <p>
   * If this method is used with a multivalued
   * parameter, the value returned is equal to the first value
   * in the Enumeration returned by <code>getProperties</code>.
   *
   * @param name		a <code>String</code> specifying the
   *				property name
   *
   * @return			a <code>String</code> containing the
   *				value of the requested
   *				property, or <code>null</code>
   *				if the request does not
   *				have a property of that name.
   *
   * @exception  java.lang.IllegalArgumentException 
   *                            if name is <code>null</code>.
   */			

  public String getProperty(String name); 


  /**
   * Returns all the values of the specified request property
   * as a <code>Enumeration</code> of <code>String</code> objects.
   * <p>
   * If the request did not include any properties
   * of the specified name, this method returns an empty
   * <code>Enumeration</code>.
   * The property name is case insensitive. You can use
   * this method with any request property.
   *
   * @param name		a <code>String</code> specifying the
   *				property name
   *
   * @return		a <code>Enumeration</code> containing
   *                  	the values of the requested property. If
   *                  	the request does not have any properties of
   *                  	that name return an empty <code>Enumeration</code>.
   *
   * @exception  java.lang.IllegalArgumentException 
   *                            if name is <code>null</code>.
   */			
  
  public java.util.Enumeration<String> getProperties(String name); 
    
    
  /**
   *
   * Returns a <code>Enumeration</code> of all the property names
   * this request contains. If the request has no
   * properties, this method returns an empty <code>Enumeration</code>.
   *
   *
   * @return			an <code>Enumeration</code> of all the
   *				property names sent with this
   *				request; if the request has
   *				no properties, an empty <code>Enumeration</code>.
   */

  public java.util.Enumeration<String> getPropertyNames();
    
    
  /**
   * Returns the context of the calling portal.
   *
   * @return the context of the calling portal
   */

  public PortalContext getPortalContext();


  /**
   * Returns the name of the authentication scheme used for the 
   * connection between client and portal,
   * for example, <code>BASIC_AUTH</code>, <code>CLIENT_CERT_AUTH</code>, 
   * a custom one or <code>null</code> if there was no authentication.
   *
   * @return		one of the static members <code>BASIC_AUTH</code>, 
   *			<code>FORM_AUTH</code>, <code>CLIENT_CERT_AUTH</code>, 
   *                    <code>DIGEST_AUTH</code> (suitable for == comparison) 
   *			indicating the authentication scheme, 
   *                    a custom one, or 
   *			<code>null</code> if the request was 
   *			not authenticated.     
   */

  public java.lang.String getAuthType();
  

   /**
    * Returns the context path which is the path prefix associated with the deployed 
    * portlet application. If the portlet application is rooted at the
    * base of the web server URL namespace (also known as "default" context), 
    * this path must be an empty string. Otherwise, it must be the path the
    * portlet application is rooted to, the path must start with a '/' and 
    * it must not end with a '/' character.
    * <p>
    * To encode a URL the {@link PortletResponse#encodeURL} method must be used.
    *
    * @return		a <code>String</code> specifying the
    *			portion of the request URL that indicates the context
    *			of the request
    *
    * @see PortletResponse#encodeURL
    */

  public String getContextPath();


  /**
   * Returns the login of the user making this request, if the user 
   * has been authenticated, or null if the user has not been authenticated.
   *
   * @return		a <code>String</code> specifying the login
   *			of the user making this request, or <code>null</code>
   *			if the user login is not known.
   *
   */

  public java.lang.String getRemoteUser();


  /**
   * Returns a java.security.Principal object containing the name of the 
   * current authenticated user.
   *
   * @return		a <code>java.security.Principal</code> containing
   *			the name of the user making this request, or
   *			<code>null</code> if the user has not been 
   *			authenticated.
   */

  public java.security.Principal getUserPrincipal();


  /**
   * Returns a boolean indicating whether the authenticated user is 
   * included in the specified logical "role".  Roles and role membership can be
   * defined using deployment descriptors.  If the user has not been
   * authenticated, the method returns <code>false</code>.
   *
   * @param role		a <code>String</code> specifying the name
   *				of the role
   *
   * @return		a <code>boolean</code> indicating whether
   *			the user making this request belongs to a given role;
   *			<code>false</code> if the user has not been 
   *			authenticated.
   */

  public boolean isUserInRole(java.lang.String role);


  /**
   *
   * Returns the value of the named attribute as an <code>Object</code>,
   * or <code>null</code> if no attribute of the given name exists. 
   * <p>
   * Attribute names should follow the same conventions as package
   * names. This specification reserves names matching <code>java.*</code>,
   * and <code>javax.*</code>. 
   * <p>
   * In a distributed portlet web application the <code>Object</code>
   * needs to be serializable.
   *
   * @param name	a <code>String</code> specifying the name of 
   *			the attribute
   *
   * @return		an <code>Object</code> containing the value 
   *			of the attribute, or <code>null</code> if
   *			the attribute does not exist.
   *
   * @exception  java.lang.IllegalArgumentException 
   *                            if name is <code>null</code>.
   *
   */

  public Object getAttribute(String name);


  /**
   * Returns an <code>Enumeration</code> containing the
   * names of the attributes available to this request. 
   * This method returns an empty <code>Enumeration</code>
   * if the request has no attributes available to it.
   * 
   *
   * @return		an <code>Enumeration</code> of strings 
   *			containing the names 
   * 			of the request attributes, or an empty 
   *                    <code>Enumeration</code> if the request 
   *                    has no attributes available to it.
   */
  
  public java.util.Enumeration<String> getAttributeNames();


  /**
   * Returns the value of a request parameter as a <code>String</code>,
   * or <code>null</code> if the parameter does not exist. Request parameters
   * are extra information sent with the request. The returned parameter 
   * are "x-www-form-urlencoded" decoded.
   * <p>
   * Only parameters targeted to the current portlet are accessible.
   * <p>
   * This method should only be used if the 
   * parameter has only one value. If the parameter might have
   * more than one value, use {@link #getParameterValues}.
   * <p>
   * If this method is used with a multivalued
   * parameter, the value returned is equal to the first value
   * in the array returned by <code>getParameterValues</code>.
   *
   *
   *
   * @param name 	a <code>String</code> specifying the 
   *			name of the parameter
   *
   * @return		a <code>String</code> representing the 
   *			single value of the parameter
   *
   * @see 		#getParameterValues
   *
   * @exception  java.lang.IllegalArgumentException 
   *                            if name is <code>null</code>.
   *
   */
  
  public String getParameter(String name);


  /**
   *
   * Returns an <code>Enumeration</code> of <code>String</code>
   * objects containing the names of the parameters contained
   * in this request. If the request has 
   * no parameters, the method returns an