Examples with SmooshedFileMapper io.druid.java.util.common.io.smoosh.SmooshedFileMapper used on opensource projects

Example 6 with SmooshedFileMapper

use of io.druid.java.util.common.io.smoosh.SmooshedFileMapper in project druid by druid-io.

the class DictionaryEncodedColumnPartSerde method getDeserializer.

@Override
public Deserializer getDeserializer() {
    return new Deserializer() {

        @Override
        public void read(ByteBuffer buffer, ColumnBuilder builder, ColumnConfig columnConfig) {
            final VERSION rVersion = VERSION.fromByte(buffer.get());
            final int rFlags;
            if (rVersion.compareTo(VERSION.COMPRESSED) >= 0) {
                rFlags = buffer.getInt();
            } else {
                rFlags = rVersion.equals(VERSION.UNCOMPRESSED_MULTI_VALUE) ? Feature.MULTI_VALUE.getMask() : NO_FLAGS;
            }
            final boolean hasMultipleValues = Feature.MULTI_VALUE.isSet(rFlags) || Feature.MULTI_VALUE_V3.isSet(rFlags);
            final GenericIndexed<String> rDictionary = GenericIndexed.read(buffer, GenericIndexed.STRING_STRATEGY, builder.getFileMapper());
            builder.setType(ValueType.STRING);
            final WritableSupplier<IndexedInts> rSingleValuedColumn;
            final WritableSupplier<IndexedMultivalue<IndexedInts>> rMultiValuedColumn;
            if (hasMultipleValues) {
                rMultiValuedColumn = readMultiValuedColum(rVersion, buffer, rFlags, builder.getFileMapper());
                rSingleValuedColumn = null;
            } else {
                rSingleValuedColumn = readSingleValuedColumn(rVersion, buffer, builder.getFileMapper());
                rMultiValuedColumn = null;
            }
            builder.setHasMultipleValues(hasMultipleValues).setDictionaryEncodedColumn(new DictionaryEncodedColumnSupplier(rDictionary, rSingleValuedColumn, rMultiValuedColumn, columnConfig.columnCacheSizeBytes()));
            GenericIndexed<ImmutableBitmap> rBitmaps = GenericIndexed.read(buffer, bitmapSerdeFactory.getObjectStrategy(), builder.getFileMapper());
            builder.setBitmapIndex(new BitmapIndexColumnPartSupplier(bitmapSerdeFactory.getBitmapFactory(), rBitmaps, rDictionary));
            ImmutableRTree rSpatialIndex = null;
            if (buffer.hasRemaining()) {
                rSpatialIndex = ByteBufferSerializer.read(buffer, new IndexedRTree.ImmutableRTreeObjectStrategy(bitmapSerdeFactory.getBitmapFactory()));
                builder.setSpatialIndex(new SpatialIndexColumnPartSupplier(rSpatialIndex));
            }
        }

        private WritableSupplier<IndexedInts> readSingleValuedColumn(VERSION version, ByteBuffer buffer, SmooshedFileMapper fileMapper) {
            switch(version) {
                case UNCOMPRESSED_SINGLE_VALUE:
                    return VSizeIndexedInts.readFromByteBuffer(buffer).asWritableSupplier();
                case COMPRESSED:
                    return CompressedVSizeIntsIndexedSupplier.fromByteBuffer(buffer, byteOrder, fileMapper);
            }
            throw new IAE("Unsupported single-value version[%s]", version);
        }

        private WritableSupplier<IndexedMultivalue<IndexedInts>> readMultiValuedColum(VERSION version, ByteBuffer buffer, int flags, SmooshedFileMapper fileMapper) {
            switch(version) {
                case UNCOMPRESSED_MULTI_VALUE:
                    return VSizeIndexed.readFromByteBuffer(buffer).asWritableSupplier();
                case COMPRESSED:
                    if (Feature.MULTI_VALUE.isSet(flags)) {
                        return CompressedVSizeIndexedSupplier.fromByteBuffer(buffer, byteOrder, fileMapper);
                    } else if (Feature.MULTI_VALUE_V3.isSet(flags)) {
                        return CompressedVSizeIndexedV3Supplier.fromByteBuffer(buffer, byteOrder, fileMapper);
                    } else {
                        throw new IAE("Unrecognized multi-value flag[%d]", flags);
                    }
            }
            throw new IAE("Unsupported multi-value version[%s]", version);
        }
    };
}