public JournalWriter(JournalMetadata<T> metadata, JournalKey<T> key) throws JournalException {
super(metadata, key);
if (metadata.isPartialMapped()) {
close();
throw new JournalException("Metadata is unusable for writer. Partially mapped?");
}
this.lagMillis = TimeUnit.HOURS.toMillis(getMetadata().getLag());
this.lagSwellMillis = lagMillis * 3;
this.checkOrder = key.isOrdered() && getTimestampOffset() != -1;
this.journalEntryWriter = new JournalEntryWriterImpl(this);
this.discardTxt = new File(metadata.getLocation(), "discard.txt");
}
private void writeDiscardFile(long rowid) throws JournalException {
if (discardTxtRaf == null) {
try {
discardTxtRaf = new RandomAccessFile(discardTxt, "rw");
discardTxtRaf.getChannel();
discardSink =
new FlexBufferSink(
discardTxtRaf.getChannel().position(discardTxtRaf.getChannel().size()),
1024 * 1024);
} catch (IOException e) {
throw new JournalException(e);
}
}
JournalMetadata m = getMetadata();
int p = Rows.toPartitionIndex(rowid);
long row = Rows.toLocalRowID(rowid);
long rowCount = 0;
try {
// partitions
for (int n = getPartitionCount() - 1; p < n; p++) {
final Partition partition = getPartition(n, true);
// partition rows
for (long r = row, psz = partition.size(); r < psz; r++) {
// partition columns
for (int c = 0, cc = m.getColumnCount(); c < cc; c++) {
switch (m.getColumnQuick(c).type) {
case DATE:
Dates.appendDateTime(discardSink, partition.getLong(r, c));
break;
case DOUBLE:
Numbers.append(discardSink, partition.getDouble(r, c), 12);
break;
case FLOAT:
Numbers.append(discardSink, partition.getFloat(r, c), 4);
break;
case INT:
Numbers.append(discardSink, partition.getInt(r, c));
break;
case STRING:
partition.getStr(r, c, discardSink);
break;
case SYMBOL:
discardSink.put(partition.getSym(r, c));
break;
case SHORT:
Numbers.append(discardSink, partition.getShort(r, c));
break;
case LONG:
Numbers.append(discardSink, partition.getLong(r, c));
break;
case BYTE:
Numbers.append(discardSink, partition.getByte(r, c));
break;
case BOOLEAN:
discardSink.put(partition.getBool(r, c) ? "true" : "false");
break;
}
if (((++rowCount) & 7) == 0) {
discardSink.flush();
}
}
}
}
} finally {
discardSink.flush();
}
}