Examples with FlexBufferSink com.questdb.std.str.FlexBufferSink used on opensource projects

Example 1 with FlexBufferSink

use of com.questdb.std.str.FlexBufferSink in project questdb by bluestreak01.

the class JournalWriter method writeDiscardFile.

private void writeDiscardFile(long rowid) throws JournalException {
    if (discardTxtRaf == null) {
        try {
            discardTxtRaf = new RandomAccessFile(discardTxt, "rw");
            FileChannel ch = discardTxtRaf.getChannel();
            discardSink = new FlexBufferSink(ch.position(ch.size()), 1024 * 1024);
        } catch (IOException e) {
            LOG.error().$(e).$();
            throw JournalIOException.INSTANCE;
        }
    }
    JournalMetadata m = getMetadata();
    int p = Rows.toPartitionIndex(rowid);
    long row = Rows.toLocalRowID(rowid);
    long rowCount = 0;
    try {
        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 ColumnType.DATE:
                                DateFormatUtils.appendDateTime(discardSink, partition.getLong(r, c));
                                break;
                            case ColumnType.DOUBLE:
                                Numbers.append(discardSink, partition.getDouble(r, c), 12);
                                break;
                            case ColumnType.FLOAT:
                                Numbers.append(discardSink, partition.getFloat(r, c), 4);
                                break;
                            case ColumnType.INT:
                                Numbers.append(discardSink, partition.getInt(r, c));
                                break;
                            case ColumnType.STRING:
                                partition.getStr(r, c, discardSink);
                                break;
                            case ColumnType.SYMBOL:
                                discardSink.put(partition.getSym(r, c));
                                break;
                            case ColumnType.SHORT:
                                Numbers.append(discardSink, partition.getShort(r, c));
                                break;
                            case ColumnType.LONG:
                                Numbers.append(discardSink, partition.getLong(r, c));
                                break;
                            case ColumnType.BYTE:
                                Numbers.append(discardSink, partition.getByte(r, c));
                                break;
                            case ColumnType.BOOLEAN:
                                discardSink.put(partition.getBool(r, c) ? "true" : "false");
                                break;
                            default:
                                break;
                        }
                        if (((++rowCount) & 7) == 0) {
                            discardSink.flush();
                        }
                    }
                }
            }
        } finally {
            discardSink.flush();
        }
    } catch (IOException e) {
        LOG.error().$(e).$();
        throw JournalIOException.INSTANCE;
    }
}