"SELECT * FROM `users` LIMIT ?",
			[]interface{}{limit10},
		},
		{
			[]clause.Interface{clause.Select{}, clause.From{}, clause.Limit{Limit: &limit10, Offset: 20}, clause.Limit{Offset: 30}, clause.Limit{Limit: &limitNeg10}},
			"SELECT * FROM `users` OFFSET ?",
			[]interface{}{30},
		},
		{

		}
		builder.WriteString("OFFSET ")
		builder.AddVar(builder, limit.Offset)
	}
}

// MergeClause merge order by clauses
func (limit Limit) MergeClause(clause *Clause) {
	clause.Name = ""

	if v, ok := clause.Expression.(Limit); ok {
		if (limit.Limit == nil || *limit.Limit == 0) && v.Limit != nil {
			limit.Limit = v.Limit
		}

		if limit.Offset == 0 && v.Offset > 0 {
			limit.Offset = v.Offset

        this.maxCount = minCount = maxCount;
        command = SMB_COM_READ_ANDX;
        openTimeout = 0xFFFFFFFF;
    }

    void setParam( int fid, long offset, int maxCount ) {
        this.fid = fid;
        this.offset = offset;
        this.maxCount = minCount = maxCount;
    }
    int getBatchLimit( byte command ) {
        return command == SMB_COM_CLOSE ? BATCH_LIMIT : 0;
    }

    /**
     * 
     * @param config
     * @param fid
     * @param offset
     * @param maxCount
     * @param andx
     */
    public SmbComReadAndX ( Configuration config, int fid, long offset, int maxCount, ServerMessageBlock andx ) {
        super(config, SMB_COM_READ_ANDX, andx);
        this.fid = fid;
        this.offset = offset;
        this.maxCount = this.minCount = maxCount;
        this.openTimeout = 0xFFFFFFFF;

     *
     * @param data The data.
     * @param offset The starting offset at which the SMB header begins.
     * @param length The length of the SMB data starting at offset. 
     */
    boolean verify(byte[] data, int offset, ServerMessageBlock response) {
        update(macSigningKey, 0, macSigningKey.length);
        int index = offset;
        update(data, index, ServerMessageBlock.SIGNATURE_OFFSET); 

    private int fid,
        count,
        offset,
        remaining,
        off;
    private byte[] b;

    SmbComWrite() {
        super();
        command = SMB_COM_WRITE;
    }
    SmbComWrite( int fid, int offset, int remaining, byte[] b, int off, int len ) {
        this.fid = fid;
        this.count = len;
        this.offset = offset;
        this.remaining = remaining;
        this.b = b;

        int offset = readULong(src, index + 4);
        byte[] buffer = new byte[length];
        System.arraycopy(src, offset, buffer, 0, length);
        return buffer;
    }

    static void writeULong(byte[] dest, int offset, int ulong) {
        dest[offset] = (byte) (ulong & 0xff);
        dest[offset + 1] = (byte) (ulong >> 8 & 0xff);
        dest[offset + 2] = (byte) (ulong >> 16 & 0xff);

     */
    public static final int SMB2_LOCKFLAG_FAIL_IMMEDIATELY = 0x10;

    private long offset;
    private long length;
    private int flags;


    /**
     * @param offset
     * @param length
     * @param flags
     */
    public Smb2Lock ( long offset, long length, int flags ) {
        this.offset = offset;
        this.length = length;
        this.flags = flags;

    }


    /**

    /**
     * Return the byte or character offset into the input source this location
     * is pointing to. If the input source is a file or a byte stream then
     * this is the byte offset into that stream, but if the input source is
     * a character media then the offset is the character offset.
     * Returns -1 if there is no offset available.
     * @return the current offset
     */
    int getCharacterOffset();

    /**

        private int startPosition;

        private int pageSize;

        private int offset;

        TestSearchRequestParams(int startPosition, int pageSize, int offset) {
            this.startPosition = startPosition;
            this.pageSize = pageSize;
            this.offset = offset;
        }

        @Override
        public String getQuery() {
            return null;
        }