MamVersion.java
- /**
- *
- * Copyright © 2016-2021 Florian Schmaus and Frank Matheron
- *
- * 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.mam.element;
- /**
- * MAM versions supported by Smack.
- *
- * @since 4.5.0
- */
- public enum MamVersion {
- // Note that the order in which the enum values are defined, is also the order in which we attempt to find a
- // supported version. The versions should therefore be listed in order of newest to oldest, so that Smack prefers
- // using a newer version over an older version.
- MAM2("urn:xmpp:mam:2") {
- @Override
- public MamElementFactory newElementFactory() {
- return new MamV2ElementFactory();
- }
- },
- MAM1("urn:xmpp:mam:1") {
- @Override
- public MamElementFactory newElementFactory() {
- return new MamV1ElementFactory();
- }
- };
- private final String namespace;
- MamVersion(String namespace) {
- this.namespace = namespace;
- }
- /**
- * Each MAM version is identified by its namespace. Returns the namespace for this MAM version.
- * @return the namespace of the MAM version
- */
- public String getNamespace() {
- return namespace;
- }
- /**
- * Creates a new factory that creates IQ's and extension objects for this MAM version.
- * @return the factory
- */
- public abstract MamElementFactory newElementFactory();
- public static MamVersion fromNamespace(String namespace) {
- for (MamVersion v : MamVersion.values()) {
- if (v.namespace.equals(namespace)) {
- return v;
- }
- }
- throw new IllegalArgumentException("Unsupported namespace: " + namespace);
- }
- }