us.levk.rserve.client.protocol.commands.Command Maven / Gradle / Ivy
/*
* The MIT License (MIT)
* Copyright (c) 2017 [email protected]
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package us.levk.rserve.client.protocol.commands;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.stream.Stream;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
* Rserve command
*
* @author levk
*/
public interface Command {
/**
* @param m
* mapper
* @return stream of encoded buffers representing the command
* @throws IOException
* on encoding failure
*/
Stream encode (ObjectMapper m) throws IOException;
/**
* @param c
* content
* @param m
* mapper
* @return decoded object
* @throws IOException
* on decoding failure
*/
default T decode (ByteBuffer c, ObjectMapper m) throws IOException {
if (c == null || c.limit () <= c.position ()) return null;
else throw new IOException ("Unexpected content");
}
}