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Appendix D. JAVA Example Code

D-22

read_only = false;

column_name = msg.read_string();

System.out.println("Reading column " + column_name);

alias = msg.read_string();

while(alias.length() > 0)

alias = msg.read_string();

processing = msg.read_string();

units = msg.read_string();

description = msg.read_string();

begin_index = msg.read_int();

piece_size = msg.read_int();

// we'll ignore the dimensions information and treat everything as

// a single dimensioned array. This greatly simplifies the math

// involved in generating array subscripts.

int dim = msg.read_int();

while(dim != 0)

dim = msg.read_int();

} // constructor

};

/** class TableDef

* Defines an object that holds the meta-information for a table. This

* information includes the table name as well as column information.

protected static class TableDef

{

public int table_no;

public String table_name;

public int table_size;

public byte time_type;

public long interval;

public char def_sig;

public Vector columns;

TableDef(int table_no_, Packet msg) throws Exception

{

// read the table information

long interval_sec;

long interval_nsec;

int table_start_pos = msg.get_read_index();

table_no = table_no_;

table_name = msg.read_string();

table_size = msg.read_int();

time_type = msg.read_byte();

msg.move_past(8);

interval_sec = msg.read_int();

interval_nsec = msg.read_int();

interval = (interval_sec * nsecPerSec) + interval_nsec;

// we now need to read the columns until a terminator is found

byte field_type = msg.read_byte();

int column_no = 1;

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