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100

Appendix D. JAVA Example Code

D-9

if(table != null)

{

// form the command message to poll the table

CreateHeader();

out_packet.message_type = 0x09;

out_packet.tran_no = 0x09;

out_packet.add_short((short)0); // security code

out_packet.add_byte((byte)5); // collect most recent records

out_packet.add_short((short)table.table_no);

out_packet.add_short((short)table.def_sig);

out_packet.add_int(num_records); // specify the number of

// records to return

out_packet.add_short((short)0); // send all fields

}

else

System.out.println("Unable to locate the table def for

\"Public\"");

}

/**

static void GetLine()

{

try

{

byte[] read_buffer = new byte[2048];

int read_index = 0;

char getlinesig = 0xAAAA;

Counter timeout = new Counter();

byte b;

boolean unquote_next = false;

boolean done = false;

while(!done && timeout.elapsed() < 10000)

{

if(in_stream.available() > 0)

{

b = (byte)read_byte();

if(b == (byte)0xBC)

{

unquote_next = true;

continue;

}

if(b != (byte)0xBD)

{

if(unquote_next)

{

b -= 0x20;

unquote_next = false;

}

getlinesig = calcSigForByte(b,getlinesig);

read_buffer[read_index++] = b;

}

else if(read_index >= 12 && getlinesig == 0)

{

try

{

in_packet = new Packet(read_buffer,read_index - 2);

flush_io_log("end of packet detected, size = " +

in_packet.whats_left());

done = true;

}

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Campbell BMP5 Informazioni Techniche Pagina 79

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Campbell BMP5 Informazioni Techniche Pagina 79

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