org.apache.mina.filter.codec.ProtocolEncoder Maven / Gradle / Ivy
/**
* Copyright 2007-2015, Kaazing Corporation. All rights reserved.
*
* Licensed 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 org.apache.mina.filter.codec;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.session.IoSession;
/**
* Encodes higher-level message objects into binary or protocol-specific data.
* MINA invokes {@link #encode(IoSession, Object, ProtocolEncoderOutput)}
* method with message which is popped from the session write queue, and then
* the encoder implementation puts encoded messages (typically {@link IoBuffer}s)
* into {@link ProtocolEncoderOutput} by calling {@link ProtocolEncoderOutput#write(Object)}.
*
* Please refer to
* TextLineEncoder
* example.
*
* @author Apache MINA Project
*
* @see ProtocolEncoderException
*/
public interface ProtocolEncoder {
/**
* Encodes higher-level message objects into binary or protocol-specific data.
* MINA invokes {@link #encode(IoSession, Object, ProtocolEncoderOutput)}
* method with message which is popped from the session write queue, and then
* the encoder implementation puts encoded messages (typically {@link IoBuffer}s)
* into {@link ProtocolEncoderOutput}.
*
* @throws Exception if the message violated protocol specification
*/
void encode(IoSession session, Object message, ProtocolEncoderOutput out)
throws Exception;
/**
* Releases all resources related with this encoder.
*
* @throws Exception if failed to dispose all resources
*/
void dispose(IoSession session) throws Exception;
}