private void sendTuples() {
assert (state == RUNNING || state == PAUSED || state == END || state == TERMINATED);
if (state == TERMINATED) return;
// Number seconds since start
int curTs = getCurTs();
if (state == RUNNING) {
int n = getNumTuples();
for (; n > 0; n--) {
String line;
try {
line = in.readLine();
} catch (IOException e) {
System.out.println("Error reading from " + fileName);
processEOF();
break;
}
// End of file
if (line == null) {
processEOF();
if (state == END) break;
continue;
}
out.println(curTs + "," + line);
numTuplesSent++;
intervalNumTuplesSent++;
lastOutputTs = curTs;
}
}
// Send a heartbeat if we have not sent any tuple with curTs - we
// send a heartbeat even in PAUSED or END state
if (curTs > lastOutputTs) {
out.println(curTs);
lastOutputTs = curTs;
}
out.flush();
}
private void sendSchema() {
StringBuffer strBuf = new StringBuffer();
// timestamp column
strBuf.append('i');
// sign column
if (!table.isStream()) {
strBuf.append(",b");
}
for (int a = 0; a < table.getNumAttrs(); a++) {
strBuf.append(',');
switch (table.getAttrType(a)) {
case Types.INTEGER:
strBuf.append('i');
break;
case Types.FLOAT:
strBuf.append('f');
break;
case Types.CHAR:
strBuf.append('c');
strBuf.append(table.getAttrLen(a));
break;
case Types.BYTE:
strBuf.append('b');
break;
default:
assert (false);
break;
}
}
String schema = strBuf.toString();
out.println(schema);
}
