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/* Copyright (c) 2016, Isode Limited, London, England.
* All rights reserved.
*
* Acquisition and use of this software and related materials for any
* purpose requires a written license agreement from Isode Limited,
* or a written license from an organisation licensed by Isode Limited
* to grant such a license.
*
*/
package com.isode.stroke.serializer.payloadserializers;
import com.isode.stroke.elements.AbstractBlockPayload;
import com.isode.stroke.jid.JID;
import com.isode.stroke.serializer.GenericPayloadSerializer;
import com.isode.stroke.serializer.xml.XMLElement;
/**
* Abstract class for serializing pay loads of type {@link AbstractBlockPayload}
*
* @param <T> Type of {@link AbstractBlockPayload} to serialize
*/
public abstract class BlockSerializer<T extends AbstractBlockPayload> extends GenericPayloadSerializer<T> {
/*
* Note this is slightly different to Swiften code as templates in C++ work
* different to Java Generics. In Swiften there exits a BlockSerialize template
* for which instances can be created of type <BlockPayload>, <BlockListPayload> and
* <UnblockPayload>. In Java as we need to pass an instance of the class to the constructor
* (which we can't do with generics) we need to create specific sub types for each of
* the different Block payloads.
*/
private final String tag;
/**
* Constructor
* @param c Class of the {@link AbstractBlockPayload} that this will serialize
* @param tag Tag for the XML element to serialize
*/
protected BlockSerializer(Class<T> c,String tag) {
super(c);
this.tag = tag;
}
@Override
protected String serializePayload(T payload) {
XMLElement element = new XMLElement(tag,"urn:xmpp:blocking");
for (JID jid : payload.getItems()) {
XMLElement item = new XMLElement("item");
item.setAttribute("jid", jid.toString());
element.addNode(item);
}
return element.serialize();
}
}
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