NotFilter.java
- /**
- *
- * Copyright 2003-2007 Jive Software, 2024 Florian Schmaus.
- *
- * 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.smack.filter;
- import org.jivesoftware.smack.packet.ExtensionElement;
- import org.jivesoftware.smack.packet.Stanza;
- import org.jivesoftware.smack.util.Objects;
- /**
- * Implements the logical NOT operation on a stanza filter. In other words, packets
- * pass this filter if they do not pass the supplied filter.
- *
- * @author Matt Tucker
- */
- public class NotFilter implements StanzaFilter {
- private final StanzaFilter filter;
- /**
- * Creates a NOT filter using the specified filter.
- *
- * @param filter the filter.
- */
- public NotFilter(StanzaFilter filter) {
- this.filter = Objects.requireNonNull(filter, "Parameter must not be null.");
- }
- @Override
- public boolean accept(Stanza packet) {
- return !filter.accept(packet);
- }
- public static <E extends ExtensionElement> NotFilter of(Class<E> extensionElementClass) {
- ExtensionElementFilter<E> extensionElementFilter = new ExtensionElementFilter<>(extensionElementClass);
- return new NotFilter(extensionElementFilter);
- }
- }