Package org.apache.druid.segment.serde

Interface Serializer

All Known Subinterfaces:

ColumnarDoublesSerializer, ColumnarFloatsSerializer, ColumnarIntsSerializer, ColumnarLongsSerializer, DictionaryWriter<T>, GenericColumnSerializer<T>, WritableSupplier<T>

All Known Implementing Classes:

AbstractSerializablePairLongObjectBufferStore.TransferredBuffer, AbstractSerializablePairLongObjectColumnSerializer, BlockCompressedPayloadSerializer, BlockCompressedPayloadWriter, BlockLayoutColumnarDoublesSerializer, BlockLayoutColumnarFloatsSerializer, BlockLayoutColumnarLongsSerializer, ByteBufferWriter, CellIndexWriter, CellWriter, ColumnarMultiIntsSerializer, ColumnDescriptor, ComplexColumnSerializer, CompressedBlockSerializer, CompressedColumnarFloatsSupplier, CompressedColumnarIntsSerializer, CompressedColumnarIntsSupplier, CompressedColumnarLongsSupplier, CompressedComplexColumnSerializer, CompressedLongsSerializer, CompressedVariableSizedBlobColumnSerializer, CompressedVSizeColumnarIntsSerializer, CompressedVSizeColumnarIntsSupplier, CompressedVSizeColumnarMultiIntsSupplier, DictionaryEncodedColumnMerger.IdConversionSerializer, DoubleColumnSerializer, DoubleColumnSerializerV2, EncodedStringDictionaryWriter, EntireLayoutColumnarDoublesSerializer, EntireLayoutColumnarFloatsSerializer, EntireLayoutColumnarLongsSerializer, FieldTypeInfo.Writer, FixedIndexedIntWriter, FixedIndexedWriter, FloatColumnSerializer, FloatColumnSerializerV2, FrontCodedIndexedWriter, FrontCodedIntArrayIndexedWriter, GenericIndexed, GenericIndexedWriter, IntermediateColumnarLongsSerializer, LargeColumnSupportedComplexColumnSerializer, LongColumnSerializer, LongColumnSerializerV2, NestedCommonFormatColumnSerializer, NestedDataColumnSerializer, NestedDataColumnSerializerV4, ScalarDoubleColumnSerializer, ScalarLongColumnSerializer, ScalarNestedCommonFormatColumnSerializer, ScalarStringColumnSerializer, SerializablePairLongDoubleColumnSerializer, SerializablePairLongFloatColumnSerializer, SerializablePairLongLongColumnSerializer, SerializablePairLongStringColumnSerializer, SingleValueColumnarIntsSerializer, V3CompressedVSizeColumnarMultiIntsSerializer, V3CompressedVSizeColumnarMultiIntsSupplier, VariantColumnSerializer, VariantColumnSerializer.InternalSerializer, VSizeColumnarInts, VSizeColumnarIntsSerializer, VSizeColumnarMultiInts, VSizeColumnarMultiIntsSerializer

public interface Serializer

Main interface for "serializeable something" in Druid segment serialization.

Method Summary

Modifier and Type	Method	Description
long	getSerializedSize()	Returns the number of bytes, that this Serializer will write to the output _channel_ (not smoosher) on a writeTo(java.nio.channels.WritableByteChannel, org.apache.druid.java.util.common.io.smoosh.FileSmoosher) call.
void	writeTo(WritableByteChannel channel, FileSmoosher smoosher)	Writes the serialized form of this object.

Method Detail

getSerializedSize

long getSerializedSize()
                throws IOException

Returns the number of bytes, that this Serializer will write to the output _channel_ (not smoosher) on a writeTo(java.nio.channels.WritableByteChannel, org.apache.druid.java.util.common.io.smoosh.FileSmoosher) call.

Throws:

IOException

writeTo

void writeTo(WritableByteChannel channel,
             FileSmoosher smoosher)
      throws IOException

Writes the serialized form of this object. The entire object may be written to the provided channel, or the object may be split over the provided channel and files added to the {@link FileSmoosher], where additional channels can be created via FileSmoosher.addWithSmooshedWriter(String, long). The latter approach is useful when the serialized form of the object is too large for a single smoosh container. At the time this javadoc was written, the max smoosh container size is limit to the max ByteBuffer size.

Throws:

IOException