final List<ByteBuffer> outParts = Lists.newArrayList();
ByteBuffer dimBuffer = v8SmooshedFiles.mapFile(filename);
String dimension = serializerUtils.readString(dimBuffer);
if (!filename.equals(String.format("dim_%s.drd", dimension))) {
throw new ISE("loaded dimension[%s] from file[%s]", dimension, filename);
}
ByteArrayOutputStream nameBAOS = new ByteArrayOutputStream();
serializerUtils.writeString(nameBAOS, dimension);
outParts.add(ByteBuffer.wrap(nameBAOS.toByteArray()));
GenericIndexed<String> dictionary = GenericIndexed.read(
dimBuffer, GenericIndexed.stringStrategy
);
if (dictionary.size() == 0) {
log.info("Dimension[%s] had cardinality 0, equivalent to no column, so skipping.", dimension);
skippedDimensions.add(dimension);
continue;
}
VSizeIndexedInts singleValCol = null;
VSizeIndexed multiValCol = VSizeIndexed.readFromByteBuffer(dimBuffer.asReadOnlyBuffer());
GenericIndexed<ImmutableBitmap> bitmaps = bitmapIndexes.get(dimension);
ImmutableRTree spatialIndex = spatialIndexes.get(dimension);
final BitmapFactory bitmapFactory = bitmapSerdeFactory.getBitmapFactory();
boolean onlyOneValue = true;
MutableBitmap nullsSet = null;
for (int i = 0; i < multiValCol.size(); ++i) {
VSizeIndexedInts rowValue = multiValCol.get(i);
if (!onlyOneValue) {
break;
}
if (rowValue.size() > 1) {
onlyOneValue = false;
}
if (rowValue.size() == 0) {
if (nullsSet == null) {
nullsSet = bitmapFactory.makeEmptyMutableBitmap();
}
nullsSet.add(i);
}
}
if (onlyOneValue) {
log.info("Dimension[%s] is single value, converting...", dimension);
final boolean bumpedDictionary;
if (nullsSet != null) {
log.info("Dimension[%s] has null rows.", dimension);
final ImmutableBitmap theNullSet = bitmapFactory.makeImmutableBitmap(nullsSet);
if (dictionary.get(0) != null) {
log.info("Dimension[%s] has no null value in the dictionary, expanding...", dimension);
bumpedDictionary = true;
final List<String> nullList = Lists.newArrayList();
nullList.add(null);
dictionary = GenericIndexed.fromIterable(
Iterables.concat(nullList, dictionary),
GenericIndexed.stringStrategy
);
bitmaps = GenericIndexed.fromIterable(
Iterables.concat(Arrays.asList(theNullSet), bitmaps),
bitmapSerdeFactory.getObjectStrategy()
);
} else {
bumpedDictionary = false;
bitmaps = GenericIndexed.fromIterable(
Iterables.concat(
Arrays.asList(
bitmapFactory
.union(Arrays.asList(theNullSet, bitmaps.get(0)))
),
Iterables.skip(bitmaps, 1)
),
bitmapSerdeFactory.getObjectStrategy()
);
}
} else {
bumpedDictionary = false;
}
final VSizeIndexed finalMultiValCol = multiValCol;
singleValCol = VSizeIndexedInts.fromList(
new AbstractList<Integer>()
{
@Override
public Integer get(int index)
{
final VSizeIndexedInts ints = finalMultiValCol.get(index);
return ints.size() == 0 ? 0 : ints.get(0) + (bumpedDictionary ? 1 : 0);
}
@Override
public int size()
{
return finalMultiValCol.size();
}
},
dictionary.size()
);
multiValCol = null;
} else {
builder.setHasMultipleValues(true);
}
builder.addSerde(
new DictionaryEncodedColumnPartSerde(
dictionary,
singleValCol,
multiValCol,
bitmapSerdeFactory,
bitmaps,
spatialIndex
)
);
final ColumnDescriptor serdeficator = builder.build();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
serializerUtils.writeString(baos, mapper.writeValueAsString(serdeficator));
byte[] specBytes = baos.toByteArray();
final SmooshedWriter channel = v9Smoosher.addWithSmooshedWriter(
dimension, serdeficator.numBytes() + specBytes.length
);
channel.write(ByteBuffer.wrap(specBytes));
serdeficator.write(channel);
channel.close();
} else if (filename.startsWith("met_")) {
if (!filename.endsWith(String.format("%s.drd", BYTE_ORDER))) {
skippedFiles.add(filename);
continue;
}
MetricHolder holder = MetricHolder.fromByteBuffer(v8SmooshedFiles.mapFile(filename));
final String metric = holder.getName();
final ColumnDescriptor.Builder builder = ColumnDescriptor.builder();
switch (holder.getType()) {
case LONG:
builder.setValueType(ValueType.LONG);
builder.addSerde(new LongGenericColumnPartSerde(holder.longType, BYTE_ORDER));
break;
case FLOAT:
builder.setValueType(ValueType.FLOAT);
builder.addSerde(new FloatGenericColumnPartSerde(holder.floatType, BYTE_ORDER));
break;
case COMPLEX:
if (!(holder.complexType instanceof GenericIndexed)) {
throw new ISE("Serialized complex types must be GenericIndexed objects.");
}
final GenericIndexed column = (GenericIndexed) holder.complexType;
final String complexType = holder.getTypeName();
builder.setValueType(ValueType.COMPLEX);
builder.addSerde(new ComplexColumnPartSerde(column, complexType));
break;
default:
throw new ISE("Unknown type[%s]", holder.getType());
}
final ColumnDescriptor serdeficator = builder.build();
ByteArrayOutputStream baos = new ByteArrayOutputStream();