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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 2014 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.handler.codec;

import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map.Entry;
import java.util.Set;

import static io.netty.handler.codec.DefaultHeaders.HASH_CODE_SEED;

public class EmptyHeaders> implements Headers {
    @Override
    public V get(K name) {
        return null;
    }

    @Override
    public V get(K name, V defaultValue) {
        return defaultValue;
    }

    @Override
    public V getAndRemove(K name) {
        return null;
    }

    @Override
    public V getAndRemove(K name, V defaultValue) {
        return defaultValue;
    }

    @Override
    public List getAll(K name) {
        return Collections.emptyList();
    }

    @Override
    public List getAllAndRemove(K name) {
        return Collections.emptyList();
    }

    @Override
    public Boolean getBoolean(K name) {
        return null;
    }

    @Override
    public boolean getBoolean(K name, boolean defaultValue) {
        return defaultValue;
    }

    @Override
    public Byte getByte(K name) {
        return null;
    }

    @Override
    public byte getByte(K name, byte defaultValue) {
        return defaultValue;
    }

    @Override
    public Character getChar(K name) {
        return null;
    }

    @Override
    public char getChar(K name, char defaultValue) {
        return defaultValue;
    }

    @Override
    public Short getShort(K name) {
        return null;
    }

    @Override
    public short getShort(K name, short defaultValue) {
        return defaultValue;
    }

    @Override
    public Integer getInt(K name) {
        return null;
    }

    @Override
    public int getInt(K name, int defaultValue) {
        return defaultValue;
    }

    @Override
    public Long getLong(K name) {
        return null;
    }

    @Override
    public long getLong(K name, long defaultValue) {
        return defaultValue;
    }

    @Override
    public Float getFloat(K name) {
        return null;
    }

    @Override
    public float getFloat(K name, float defaultValue) {
        return defaultValue;
    }

    @Override
    public Double getDouble(K name) {
        return null;
    }

    @Override
    public double getDouble(K name, double defaultValue) {
        return defaultValue;
    }

    @Override
    public Long getTimeMillis(K name) {
        return null;
    }

    @Override
    public long getTimeMillis(K name, long defaultValue) {
        return defaultValue;
    }

    @Override
    public Boolean getBooleanAndRemove(K name) {
        return null;
    }

    @Override
    public boolean getBooleanAndRemove(K name, boolean defaultValue) {
        return defaultValue;
    }

    @Override
    public Byte getByteAndRemove(K name) {
        return null;
    }

    @Override
    public byte getByteAndRemove(K name, byte defaultValue) {
        return defaultValue;
    }

    @Override
    public Character getCharAndRemove(K name) {
        return null;
    }

    @Override
    public char getCharAndRemove(K name, char defaultValue) {
        return defaultValue;
    }

    @Override
    public Short getShortAndRemove(K name) {
        return null;
    }

    @Override
    public short getShortAndRemove(K name, short defaultValue) {
        return defaultValue;
    }

    @Override
    public Integer getIntAndRemove(K name) {
        return null;
    }

    @Override
    public int getIntAndRemove(K name, int defaultValue) {
        return defaultValue;
    }

    @Override
    public Long getLongAndRemove(K name) {
        return null;
    }

    @Override
    public long getLongAndRemove(K name, long defaultValue) {
        return defaultValue;
    }

    @Override
    public Float getFloatAndRemove(K name) {
        return null;
    }

    @Override
    public float getFloatAndRemove(K name, float defaultValue) {
        return defaultValue;
    }

    @Override
    public Double getDoubleAndRemove(K name) {
        return null;
    }

    @Override
    public double getDoubleAndRemove(K name, double defaultValue) {
        return defaultValue;
    }

    @Override
    public Long getTimeMillisAndRemove(K name) {
        return null;
    }

    @Override
    public long getTimeMillisAndRemove(K name, long defaultValue) {
        return defaultValue;
    }

    @Override
    public boolean contains(K name) {
        return false;
    }

    @Override
    public boolean contains(K name, V value) {
        return false;
    }

    @Override
    public boolean containsObject(K name, Object value) {
        return false;
    }

    @Override
    public boolean containsBoolean(K name, boolean value) {
        return false;
    }

    @Override
    public boolean containsByte(K name, byte value) {
        return false;
    }

    @Override
    public boolean containsChar(K name, char value) {
        return false;
    }

    @Override
    public boolean containsShort(K name, short value) {
        return false;
    }

    @Override
    public boolean containsInt(K name, int value) {
        return false;
    }

    @Override
    public boolean containsLong(K name, long value) {
        return false;
    }

    @Override
    public boolean containsFloat(K name, float value) {
        return false;
    }

    @Override
    public boolean containsDouble(K name, double value) {
        return false;
    }

    @Override
    public boolean containsTimeMillis(K name, long value) {
        return false;
    }

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

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

    @Override
    public Set names() {
        return Collections.emptySet();
    }

    @Override
    public T add(K name, V value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T add(K name, Iterable values) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T add(K name, V... values) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addObject(K name, Object value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addObject(K name, Iterable values) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addObject(K name, Object... values) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addBoolean(K name, boolean value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addByte(K name, byte value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addChar(K name, char value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addShort(K name, short value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addInt(K name, int value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addLong(K name, long value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addFloat(K name, float value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addDouble(K name, double value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T addTimeMillis(K name, long value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T add(Headers headers) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T set(K name, V value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T set(K name, Iterable values) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T set(K name, V... values) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setObject(K name, Object value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setObject(K name, Iterable values) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setObject(K name, Object... values) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setBoolean(K name, boolean value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setByte(K name, byte value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setChar(K name, char value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setShort(K name, short value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setInt(K name, int value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setLong(K name, long value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setFloat(K name, float value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setDouble(K name, double value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setTimeMillis(K name, long value) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T set(Headers headers) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public T setAll(Headers headers) {
        throw new UnsupportedOperationException("read only");
    }

    @Override
    public boolean remove(K name) {
        return false;
    }

    @Override
    public T clear() {
        return thisT();
    }

    /**
     * Equivalent to {@link #getAll(Object)} but no intermediate list is generated.
     * @param name the name of the header to retrieve
     * @return an {@link Iterator} of header values corresponding to {@code name}.
     */
    public Iterator valueIterator(@SuppressWarnings("unused") K name) {
        List empty = Collections.emptyList();
        return empty.iterator();
    }

    @Override
    public Iterator> iterator() {
        List> empty = Collections.emptyList();
        return empty.iterator();
    }

    @Override
    public boolean equals(Object o) {
        if (!(o instanceof Headers)) {
            return false;
        }

        Headers rhs = (Headers) o;
        return isEmpty() && rhs.isEmpty();
    }

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

    @Override
    public String toString() {
        return new StringBuilder(getClass().getSimpleName()).append('[').append(']').toString();
    }

    @SuppressWarnings("unchecked")
    private T thisT() {
        return (T) this;
    }
}