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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:
 *
 *   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 io.netty.util.internal;

import io.netty.util.Recycler;
import io.netty.util.Recycler.Handle;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.RandomAccess;

/**
 * A simple list which is reyclable. This implementation does not allow {@code null} elements to be added.
 */
public final class RecyclableArrayList extends ArrayList {

    private static final long serialVersionUID = -8605125654176467947L;

    private static final int DEFAULT_INITIAL_CAPACITY = 8;

    private static final Recycler RECYCLER = new Recycler() {
        @Override
        protected RecyclableArrayList newObject(Handle handle) {
            return new RecyclableArrayList(handle);
        }
    };

    /**
     * Create a new empty {@link RecyclableArrayList} instance
     */
    public static RecyclableArrayList newInstance() {
        return newInstance(DEFAULT_INITIAL_CAPACITY);
    }

    /**
     * Create a new empty {@link RecyclableArrayList} instance with the given capacity.
     */
    public static RecyclableArrayList newInstance(int minCapacity) {
        RecyclableArrayList ret = RECYCLER.get();
        ret.ensureCapacity(minCapacity);
        return ret;
    }

    private final Handle handle;

    private RecyclableArrayList(Handle handle) {
        this(handle, DEFAULT_INITIAL_CAPACITY);
    }

    private RecyclableArrayList(Handle handle, int initialCapacity) {
        super(initialCapacity);
        this.handle = handle;
    }

    @Override
    public boolean addAll(Collection c) {
        checkNullElements(c);
        return super.addAll(c);
    }

    @Override
    public boolean addAll(int index, Collection c) {
        checkNullElements(c);
        return super.addAll(index, c);
    }

    private static void checkNullElements(Collection c) {
        if (c instanceof RandomAccess && c instanceof List) {
            // produce less garbage
            List list = (List) c;
            int size = list.size();
            for (int i = 0; i  < size; i++) {
                if (list.get(i) == null) {
                    throw new IllegalArgumentException("c contains null values");
                }
            }
        } else {
            for (Object element: c) {
                if (element == null) {
                    throw new IllegalArgumentException("c contains null values");
                }
            }
        }
    }

    @Override
    public boolean add(Object element) {
        if (element == null) {
            throw new NullPointerException("element");
        }
        return super.add(element);
    }

    @Override
    public void add(int index, Object element) {
        if (element == null) {
            throw new NullPointerException("element");
        }
        super.add(index, element);
    }

    @Override
    public Object set(int index, Object element) {
        if (element == null) {
            throw new NullPointerException("element");
        }
        return super.set(index, element);
    }

    /**
     * Clear and recycle this instance.
     */
    public boolean recycle() {
        clear();
        return RECYCLER.recycle(this, handle);
    }
}
 















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