78 lines
2.5 KiB
Java
78 lines
2.5 KiB
Java
/**
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*
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* Copyright 2003-2007 Jive Software.
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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.smack.filter;
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import org.jivesoftware.smack.packet.Stanza;
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import org.jivesoftware.smack.packet.ExtensionElement;
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import org.jivesoftware.smack.util.StringUtils;
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/**
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* Filters for stanzas with a particular type of stanza extension.
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*
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* @author Matt Tucker
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*/
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public class StanzaExtensionFilter implements StanzaFilter {
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private final String elementName;
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private final String namespace;
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/**
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* Creates a new stanza extension filter. Stanzas will pass the filter if
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* they have a stanza extension that matches the specified element name
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* and namespace.
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*
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* @param elementName the XML element name of the stanza extension.
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* @param namespace the XML namespace of the stanza extension.
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*/
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public StanzaExtensionFilter(String elementName, String namespace) {
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StringUtils.requireNotNullOrEmpty(namespace, "namespace must not be null or empty");
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this.elementName = elementName;
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this.namespace = namespace;
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}
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/**
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* Creates a new stanza extension filter. Stanzas will pass the filter if they have a stanza
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* extension that matches the specified namespace.
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*
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* @param namespace the XML namespace of the stanza extension.
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*/
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public StanzaExtensionFilter(String namespace) {
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this(null, namespace);
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}
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/**
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* Creates a new stanza extension filter for the given stanza extension.
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*
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* @param packetExtension
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*/
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public StanzaExtensionFilter(ExtensionElement packetExtension) {
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this(packetExtension.getElementName(), packetExtension.getNamespace());
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}
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@Override
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public boolean accept(Stanza packet) {
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return packet.hasExtension(elementName, namespace);
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}
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@Override
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public String toString() {
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return getClass().getSimpleName() + ": element=" + elementName + " namespace=" + namespace;
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}
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}
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