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07da9ffb48
Returning a generic would allow for
List<ExtensionElement> list = stanza.getExtension("foo", "bar");
to compile (Note the we are calling getExtension(), not
getExtension*s*()).
Users are encouraged to use the type safe getExtension(Class<? extends
ExtensionElement) variant instead.
Fixes SMACK-825.
64 lines
2 KiB
Java
64 lines
2 KiB
Java
/**
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*
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* Copyright © 2014-2020 Florian Schmaus
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.gcm.packet;
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import javax.xml.namespace.QName;
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import org.jivesoftware.smack.packet.Stanza;
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import org.jivesoftware.smackx.json.packet.AbstractJsonPacketExtension;
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/**
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* XMPP extension elements as used by Google's GCM Cloud Connection Server (XMPP).
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* <p>
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* This extension is semantically the same as {@link org.jivesoftware.smackx.json.packet.JsonPacketExtension}, but with
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* a different element and namespace. It is used to exchange message stanzas with a JSON payload as extension element.
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* </p>
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*
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* @see <a href="https://developer.android.com/google/gcm/ccs.html">GCM Cloud Connection Server (XMPP)</a>
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*/
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public class GcmPacketExtension extends AbstractJsonPacketExtension {
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public static final String ELEMENT = "gcm";
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public static final String NAMESPACE = "google:mobile:data";
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public static final QName QNAME = new QName(NAMESPACE, ELEMENT);
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public GcmPacketExtension(String json) {
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super(json);
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}
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@Override
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public String getNamespace() {
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return NAMESPACE;
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}
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@Override
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public String getElementName() {
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return ELEMENT;
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}
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/**
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* Retrieve the GCM stanza extension from the packet.
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*
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* @param packet TODO javadoc me please
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* @return the GCM stanza extension or null.
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*/
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public static GcmPacketExtension from(Stanza packet) {
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return packet.getExtension(GcmPacketExtension.class);
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}
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}
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