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NCache Professional client for java.

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/*
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 */

package com.alachisoft.ncache.client.internal.command;

import com.alachisoft.ncache.common.protobuf.CommandProtocol;
import com.alachisoft.ncache.common.protobuf.GetGroupNextChunkCommandProtocol;
import com.alachisoft.ncache.common.protobuf.GroupEnumerationPointerProtocol;
import com.alachisoft.ncache.runtime.exceptions.CommandException;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

/**
 * @author Administrator
 */
public class GetGroupNextChunkCommand extends Command {

    private String group;
    private String subGroup;
    private String id;
    private int chunckId;
    protected com.alachisoft.ncache.common.protobuf.GetGroupNextChunkCommandProtocol.GetGroupNextChunkCommand _commandInstance;

    public GetGroupNextChunkCommand(String id, int chunckId, String group, String subGroup) {
        this.group = group;
        this.subGroup = subGroup;
        this.id = id;
        this.chunckId = chunckId;
    }

    @Override
    protected void createCommand() throws CommandException {
        if (group == null) {
            if (subGroup != null) {
                throw new NullPointerException(
                        "group must be specified for sub group");
            } else {
                subGroup = "";
            }
            group = "";
        }

        GroupEnumerationPointerProtocol.GroupEnumerationPointer.Builder pointerBuilder =
                GroupEnumerationPointerProtocol.GroupEnumerationPointer.newBuilder();
        pointerBuilder.setChunkId(chunckId)
                .setId(id);

        if (group != null) {
            pointerBuilder = pointerBuilder.setGroup(group);
            if (subGroup != null) {
                pointerBuilder = pointerBuilder.setSubGroup(subGroup);
            }
        }

        GetGroupNextChunkCommandProtocol.GetGroupNextChunkCommand.Builder builder =
                GetGroupNextChunkCommandProtocol.GetGroupNextChunkCommand.newBuilder();

        builder = builder.setRequestId(this.getRequestId())
                .setGroupEnumerationPointer(pointerBuilder);

        _commandInstance =builder.build();
    }

    @Override
    public CommandType getCommandType() {
        return CommandType.GETGROUP_NEXT_CHUNK;
    }

    @Override
    public RequestType getCommandRequestType() {
        return RequestType.ChunkRead;
    }

    @Override
    protected  void serializeCommandInternal(ByteArrayOutputStream stream) throws IOException
    {
        _commandInstance.writeTo(stream);
    }
    @Override
    protected short getCommandHandle()
    {
        return (short)CommandProtocol.Command.Type.GET_GROUP_NEXT_CHUNK.getNumber();
    }

}