001/** 002 * 003 * Copyright © 2014 Florian Schmaus 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.jivesoftware.smack.util; 018 019import java.util.Collection; 020 021import org.jivesoftware.smack.packet.ExtensionElement; 022 023public class PacketUtil { 024 025 /** 026 * Get a extension element from a collection. 027 * @param collection 028 * @param element 029 * @param namespace 030 * @param <PE> 031 * @return the extension element 032 * @deprecated use {@link #extensionElementFrom(Collection, String, String)} instead. 033 */ 034 @Deprecated 035 public static <PE extends ExtensionElement> PE packetExtensionfromCollection( 036 Collection<ExtensionElement> collection, String element, 037 String namespace) { 038 return extensionElementFrom(collection, element, namespace); 039 } 040 041 /** 042 * Get a extension element from a collection. 043 * 044 * @param collection Collection of ExtensionElements. 045 * @param element name of the targeted ExtensionElement. 046 * @param namespace namespace of the targeted ExtensionElement. 047 * @param <PE> Type of the ExtensionElement 048 * 049 * @return the extension element 050 * @deprecated use {@link #extensionElementFrom(Collection, String, String)} instead 051 */ 052 @Deprecated 053 public static <PE extends ExtensionElement> PE packetExtensionFromCollection( 054 Collection<ExtensionElement> collection, String element, 055 String namespace) { 056 return extensionElementFrom(collection, element, namespace); 057 } 058 059 /** 060 * Get a extension element from a collection. 061 * 062 * @param collection Collection of ExtensionElements. 063 * @param element name of the targeted ExtensionElement. 064 * @param namespace namespace of the targeted ExtensionElement. 065 * @param <PE> Type of the ExtensionElement 066 * 067 * @return the extension element 068 */ 069 @SuppressWarnings("unchecked") 070 public static <PE extends ExtensionElement> PE extensionElementFrom(Collection<ExtensionElement> collection, 071 String element, String namespace) { 072 for (ExtensionElement packetExtension : collection) { 073 if ((element == null || packetExtension.getElementName().equals( 074 element)) 075 && packetExtension.getNamespace().equals(namespace)) { 076 return (PE) packetExtension; 077 } 078 } 079 return null; 080 } 081}