/*
* Copyright 2000-2001,2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jetspeed.portal;
import java.util.Iterator;
import org.apache.jetspeed.om.profile.Entry;
import org.apache.jetspeed.om.profile.PSMLDocument;
import org.apache.jetspeed.om.profile.Profile;
import org.apache.jetspeed.portal.Portlet;
/**
* This interface provides an easy, object-oriented approach to modifing
* a portlet instance's persistent attributes.
* It provides methods for getting, setting and removing attributes from
* portlet instance persistence storage.
*
* In a Jetspeed 1.4x PSML profile, the default XML format for an instance and attribute is:
*
* <entry>
* <parameter name="someName" value="someValue"/>
*
* @author <a href="mailto:sweaver@rippe.com">Scott Weaver</a>
* @author <a href="mailto:david@bluesunrise.com">David Sean Taylor</a>
* @version $Id: PortletInstance.java,v 1.3 2004/02/23 04:05:35 jford Exp $
*/
public interface PortletInstance
{
/**
* Retrieves an attributes value associated with a named object from a
* portlet instance's persistence storage.
*
* @param name The name of the attribute
* @param defaultValue The default value if the attribute is not found.
* @return String The attribute value, or the defaultValue if not found.
*/
String getAttribute(String name, String defaultValue);
/**
* Retrieves an attributes value associated with a named object from a
* portlet instance's persistence storage.
*
* @param name The name of the attribute
* @return String The attribute value, or the empty string if not found.
*/
String getAttribute(String name);
/**
* Sets a portlet instance attribute into persistence storage.
*
* @param name The name of the attribute.
* @param value The value of the attribute.
*/
void setAttribute(String name, String value);
/**
* Removes a portlet instance attribute from persistence storage.
*
* @param name The name of the attribute.
*/
void removeAttribute(String name);
/**
* Removes all portlet instance attributes from persistence storage.
*
*/
void removeAllAttributes();
/**
* Retrieves a list of all of the attributes of this portlet instance
* as <code>org.apache.jetspeed.om.profile.Parameter</code> objects.
*
* @return java.util.Iterator
*/
Iterator getAttributes();
/**
* Retrieves a list of all attributes names for all the attributes
* contained within this portlet instance.
*
* @return java.util.Iterator
*/
Iterator getAttributeNames();
/**
* Returns the PSMLDocument that contains this portlet instance.
*
* @return org.apache.jetspeed.om.profile.PSMLDocument
*
*/
PSMLDocument getDocument();
/**
* Returns the Profile instance containing this portlet instance.
*
* @return org.apache.jetspeed.om.profile.Profile
*/
Profile getProfile();
/**
* Returns the PSML OM instance associated with this instance.
*
* @return org.apache.jetspeed.om.profile.Entry
*/
Entry getEntry();
/**
* Returns the parent portlet of this PortletInstance.
*
* @return org.apache.jetspeed.portal.Portlet
*/
Portlet getPortlet();
/**
* Retrieves the name of the parent portlet as it is defined within the portlet registry.
*
* @return String The name of the portlet.
*/
String getName();
/**
* Retrieves the title (if it is defined) of the parent portlet as it is defined
* within the portlet registry.
*
* @return String The title of the portlet.
*/
String getTitle();
/**
* Retrieves the description (if it is defined) of the parent portlet as it
* is defined within the portlet registry.
*
* @return String The description of the portlet.
*/
String getDescription();
}