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This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging 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 2016 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.handler.codec.smtp;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.util.internal.UnstableApi;

/**
 * The last part of a sequence of {@link SmtpContent}s that are sent after a {@code DATA} request.
 * Be aware that a {@link SmtpContent} / {@link LastSmtpContent} sequence must always use CRLF as line delimiter
 * and the lines that start with a DOT must be escaped with an extra DOT as
 * specified by RFC2821.
 */
@UnstableApi
public interface LastSmtpContent extends SmtpContent {

    /**
     * Empty {@link LastSmtpContent}.
     */
    LastSmtpContent EMPTY_LAST_CONTENT = new LastSmtpContent() {
        @Override
        public LastSmtpContent copy() {
            return this;
        }

        @Override
        public LastSmtpContent duplicate() {
            return this;
        }

        @Override
        public LastSmtpContent retainedDuplicate() {
            return this;
        }

        @Override
        public LastSmtpContent replace(ByteBuf content) {
            return new DefaultLastSmtpContent(content);
        }

        @Override
        public LastSmtpContent retain() {
            return this;
        }

        @Override
        public LastSmtpContent retain(int increment) {
            return this;
        }

        @Override
        public LastSmtpContent touch() {
            return this;
        }

        @Override
        public LastSmtpContent touch(Object hint) {
            return this;
        }

        @Override
        public ByteBuf content() {
            return Unpooled.EMPTY_BUFFER;
        }

        @Override
        public int refCnt() {
            return 1;
        }

        @Override
        public boolean release() {
            return false;
        }

        @Override
        public boolean release(int decrement) {
            return false;
        }
    };

    @Override
    LastSmtpContent copy();

    @Override
    LastSmtpContent duplicate();

    @Override
    LastSmtpContent retainedDuplicate();

    @Override
    LastSmtpContent replace(ByteBuf content);

    @Override
    LastSmtpContent retain();

    @Override
    LastSmtpContent retain(int increment);

    @Override
    LastSmtpContent touch();

    @Override
    LastSmtpContent touch(Object hint);
}




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