See: Description
Interface | Description |
---|---|
ByteBufferPool | |
Closeable | Deprecated
use java.io.Closeable
|
RawComparator<T> |
A
Comparator that operates directly on byte representations of
objects. |
Stringifier<T> |
Stringifier interface offers two methods to convert an object
to a string representation and restore the object given its
string representation.
|
Writable |
A serializable object which implements a simple, efficient, serialization
protocol, based on
DataInput and DataOutput . |
WritableComparable<T> |
A
Writable which is also Comparable . |
WritableFactory |
A factory for a class of Writable.
|
Class | Description |
---|---|
AbstractMapWritable |
Abstract base class for MapWritable and SortedMapWritable
Unlike org.apache.nutch.crawl.MapWritable, this class allows creation of
MapWritable<Writable, MapWritable> so the CLASS_TO_ID and ID_TO_CLASS
maps travel with the class instead of being static.
|
ArrayFile |
A dense file-based mapping from integers to values.
|
ArrayPrimitiveWritable |
This is a wrapper class.
|
ArrayWritable |
A Writable for arrays containing instances of a class.
|
BinaryComparable |
Interface supported by
WritableComparable
types supporting ordering/permutation by a representative set of bytes. |
BloomMapFile |
This class extends
MapFile and provides very much the same
functionality. |
BooleanWritable |
A WritableComparable for booleans.
|
BytesWritable |
A byte sequence that is usable as a key or value.
|
ByteWritable |
A WritableComparable for a single byte.
|
CompressedWritable |
A base-class for Writables which store themselves compressed and lazily
inflate on field access.
|
DataOutputOutputStream |
OutputStream implementation that wraps a DataOutput.
|
DefaultStringifier<T> |
DefaultStringifier is the default implementation of the
Stringifier
interface which stringifies the objects using base64 encoding of the
serialized version of the objects. |
DoubleWritable |
Writable for Double values.
|
ElasticByteBufferPool |
This is a simple ByteBufferPool which just creates ByteBuffers as needed.
|
EnumSetWritable<E extends Enum<E>> |
A Writable wrapper for EnumSet.
|
FloatWritable |
A WritableComparable for floats.
|
GenericWritable |
A wrapper for Writable instances.
|
IntWritable |
A WritableComparable for ints.
|
IOUtils |
An utility class for I/O related functionality.
|
LongWritable |
A WritableComparable for longs.
|
MapFile |
A file-based map from keys to values.
|
MapWritable |
A Writable Map.
|
MD5Hash |
A Writable for MD5 hash values.
|
NullWritable |
Singleton Writable with no data.
|
ObjectWritable |
A polymorphic Writable that writes an instance with it's class name.
|
SequenceFile |
SequenceFile s are flat files consisting of binary key/value
pairs. |
SetFile |
A file-based set of keys.
|
ShortWritable |
A WritableComparable for shorts.
|
SortedMapWritable |
A Writable SortedMap.
|
Text |
This class stores text using standard UTF8 encoding.
|
TwoDArrayWritable |
A Writable for 2D arrays containing a matrix of instances of a class.
|
VersionedWritable |
A base class for Writables that provides version checking.
|
VIntWritable |
A WritableComparable for integer values stored in variable-length format.
|
VLongWritable |
A WritableComparable for longs in a variable-length format.
|
WritableComparator |
A Comparator for
WritableComparable s. |
WritableFactories |
Factories for non-public writables.
|
WritableUtils |
Exception | Description |
---|---|
MultipleIOException |
Encapsulate a list of
IOException into an IOException |
VersionMismatchException |
Thrown by
VersionedWritable.readFields(DataInput) when the
version of an object being read does not match the current implementation
version as returned by VersionedWritable.getVersion() . |
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