@Override
public void write(Writable w) throws IOException {
MapWritable map = (MapWritable) w;
BasicDBObject dbo = new BasicDBObject();
for (final Map.Entry<Writable, Writable> entry : map.entrySet()) {
// System.err.println("Write: key=" + entry.getKey().toString()
// + ", val=" + entry.getValue().toString());
String key = entry.getKey().toString();
// if ("id".equals(key)) {
// key = "_id";
// }
dbo.put(key, getObjectFromWritable(entry.getValue()));
}
table.save(dbo);
}
public MongoReader(
String dbHost,
String dbPort,
String dbName,
String dbUser,
String dbPasswd,
String colName,
MongoSplit split,
String[] readColumns) {
this.table = new MongoTable(dbHost, dbPort, dbName, dbUser, dbPasswd, colName);
this.split = split;
this.readColumns = readColumns;
this.cursor = table.findAll(readColumns).batchSize(BATCH_SIZE).skip((int) split.getStart());
if (!split.isLastSplit()) this.cursor.limit((int) split.getLength()); // if it's the last
// split,it will read
// all records since
// $start
}
@Override
public void close() throws IOException {
if (table != null) table.close();
}