mirror of
https://github.com/vanitasvitae/Smack.git
synced 2024-12-29 05:57:58 +01:00
f7a1c750ad
git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@11346 b35dd754-fafc-0310-a699-88a17e54d16e
95 lines
3.5 KiB
Java
95 lines
3.5 KiB
Java
/**
|
|
* All rights reserved. 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.jivesoftware.smackx.pubsub;
|
|
|
|
import org.jivesoftware.smack.packet.PacketExtension;
|
|
import org.jivesoftware.smackx.pubsub.provider.ItemProvider;
|
|
|
|
/**
|
|
* This class represents an item that has been, or will be published to a
|
|
* pubsub node. An <tt>Item</tt> has several properties that are dependent
|
|
* on the configuration of the node to which it has been or will be published.
|
|
*
|
|
* <h1>An Item received from a node (via {@link LeafNode#getItems()} or {@link LeafNode#addItemEventListener(org.jivesoftware.smackx.pubsub.listener.ItemEventListener)}</b>
|
|
* <li>Will always have an id (either user or server generated) unless node configuration has both
|
|
* {@link ConfigureForm#isPersistItems()} and {@link ConfigureForm#isDeliverPayloads()}set to false.
|
|
* <li>Will have a payload if the node configuration has {@link ConfigureForm#isDeliverPayloads()} set
|
|
* to true, otherwise it will be null.
|
|
*
|
|
* <h1>An Item created to send to a node (via {@link LeafNode#send()} or {@link LeafNode#publish()}</b>
|
|
* <li>The id is optional, since the server will generate one if necessary, but should be used if it is
|
|
* meaningful in the context of the node. This value must be unique within the node that it is sent to, since
|
|
* resending an item with the same id will overwrite the one that already exists if the items are persisted.
|
|
* <li>Will require payload if the node configuration has {@link ConfigureForm#isDeliverPayloads()} set
|
|
* to true.
|
|
*
|
|
* <p>To customise the payload object being returned from the {@link #getPayload()} method, you can
|
|
* add a custom parser as explained in {@link ItemProvider}.
|
|
*
|
|
* @author Robin Collier
|
|
*/
|
|
public class PayloadItem<E extends PacketExtension> extends Item
|
|
{
|
|
private E payload;
|
|
|
|
/**
|
|
* Create an <tt>Item</tt> with an id and payload.
|
|
*
|
|
* @param itemId The id of this item. It can be null if we want the server to set the id.
|
|
* @param payloadExt A {@link PacketExtension} which represents the payload data.
|
|
*/
|
|
public PayloadItem(String itemId, E payloadExt)
|
|
{
|
|
super(itemId);
|
|
|
|
if (payloadExt == null)
|
|
throw new IllegalArgumentException("payload cannot be 'null'");
|
|
payload = payloadExt;
|
|
}
|
|
|
|
/**
|
|
* Get the payload associated with this <tt>Item</tt>. Customising the payload
|
|
* parsing from the server can be accomplished as described in {@link ItemProvider}.
|
|
*
|
|
* @return The payload as a {@link PacketExtension}.
|
|
*/
|
|
public E getPayload()
|
|
{
|
|
return payload;
|
|
}
|
|
|
|
public String toXML()
|
|
{
|
|
StringBuilder builder = new StringBuilder("<item");
|
|
|
|
if (getId() != null)
|
|
{
|
|
builder.append(" id='");
|
|
builder.append(getId());
|
|
builder.append("'");
|
|
}
|
|
|
|
builder.append(">");
|
|
builder.append(payload.toXML());
|
|
builder.append("</item>");
|
|
|
|
return builder.toString();
|
|
}
|
|
|
|
@Override
|
|
public String toString()
|
|
{
|
|
return getClass().getName() + " | Content [" + toXML() + "]";
|
|
}
|
|
}
|