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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2017 The Netty Project
 *
 * The Netty Project licenses this file to you 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:
 *
 *   https://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 io.netty.util.internal;

import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.NoSuchElementException;

public final class EmptyPriorityQueue implements PriorityQueue {
    private static final PriorityQueue INSTANCE = new EmptyPriorityQueue();

    private EmptyPriorityQueue() {
    }

    /**
     * Returns an unmodifiable empty {@link PriorityQueue}.
     */
    @SuppressWarnings("unchecked")
    public static  EmptyPriorityQueue instance() {
        return (EmptyPriorityQueue) INSTANCE;
    }

    @Override
    public boolean removeTyped(T node) {
        return false;
    }

    @Override
    public boolean containsTyped(T node) {
        return false;
    }

    @Override
    public void priorityChanged(T node) {
    }

    @Override
    public int size() {
        return 0;
    }

    @Override
    public boolean isEmpty() {
        return true;
    }

    @Override
    public boolean contains(Object o) {
        return false;
    }

    @Override
    public Iterator iterator() {
        return Collections.emptyList().iterator();
    }

    @Override
    public Object[] toArray() {
        return EmptyArrays.EMPTY_OBJECTS;
    }

    @Override
    public  T1[] toArray(T1[] a) {
        if (a.length > 0) {
            a[0] = null;
        }
        return a;
    }

    @Override
    public boolean add(T t) {
        return false;
    }

    @Override
    public boolean remove(Object o) {
        return false;
    }

    @Override
    public boolean containsAll(Collection c) {
        return false;
    }

    @Override
    public boolean addAll(Collection c) {
        return false;
    }

    @Override
    public boolean removeAll(Collection c) {
        return false;
    }

    @Override
    public boolean retainAll(Collection c) {
        return false;
    }

    @Override
    public void clear() {
    }

    @Override
    public void clearIgnoringIndexes() {
    }

    @Override
    public boolean equals(Object o) {
        return o instanceof PriorityQueue && ((PriorityQueue) o).isEmpty();
    }

    @Override
    public int hashCode() {
        return 0;
    }

    @Override
    public boolean offer(T t) {
        return false;
    }

    @Override
    public T remove() {
        throw new NoSuchElementException();
    }

    @Override
    public T poll() {
        return null;
    }

    @Override
    public T element() {
        throw new NoSuchElementException();
    }

    @Override
    public T peek() {
        return null;
    }

    @Override
    public String toString() {
        return EmptyPriorityQueue.class.getSimpleName();
    }
}
    

    

    

            

    

            



    
    






    
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