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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 2013 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.channel.nio;

import java.nio.channels.SelectionKey;
import java.util.AbstractSet;
import java.util.Arrays;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.Objects;

final class SelectedSelectionKeySet extends AbstractSet {

    SelectionKey[] keys;
    int size;

    SelectedSelectionKeySet() {
        keys = new SelectionKey[1024];
    }

    @Override
    public boolean add(SelectionKey o) {
        if (o == null) {
            return false;
        }

        if (size == keys.length) {
            increaseCapacity();
        }

        keys[size++] = o;
        return true;
    }

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

    @Override
    public boolean contains(Object o) {
        SelectionKey[] array = keys;
        for (int i = 0, s = size; i < s; i++) {
            SelectionKey k = array[i];
            if (k.equals(o)) {
                return true;
            }
        }
        return false;
    }

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

    @Override
    public Iterator iterator() {
        return new Iterator() {
            private int idx;

            @Override
            public boolean hasNext() {
                return idx < size;
            }

            @Override
            public SelectionKey next() {
                if (!hasNext()) {
                    throw new NoSuchElementException();
                }
                return keys[idx++];
            }

            @Override
            public void remove() {
                throw new UnsupportedOperationException();
            }
        };
    }

    void reset() {
        reset(0);
    }

    void reset(int start) {
        Arrays.fill(keys, start, size, null);
        size = 0;
    }

    private void increaseCapacity() {
        SelectionKey[] newKeys = new SelectionKey[keys.length << 1];
        System.arraycopy(keys, 0, newKeys, 0, size);
        keys = newKeys;
    }
}