Uses of Interface
org.apache.hadoop.io.Writable

Packages that use Writable

Package	Description
org.apache.hadoop.io	Generic i/o code for use when reading and writing data to the network, to databases, and to files.
org.apache.nutch.crawl	Crawl control code.
org.apache.nutch.fetcher	The Nutch robot.
org.apache.nutch.metadata	A Multi-valued Metadata container, and set of constant fields for Nutch Metadata.
org.apache.nutch.parse
org.apache.nutch.protocol

Uses of Writable in org.apache.hadoop.io

Subinterfaces of Writable in org.apache.hadoop.io

Modifier and Type	Interface and Description
interface	WritableComparable An interface which extends both Writable and Comparable.

Classes in org.apache.hadoop.io that implement Writable

Modifier and Type	Class and Description
class	ArrayWritable A Writable for arrays containing instances of a class.
class	BooleanWritable A WritableComparable for booleans.
class	BytesWritable A byte sequence that is usable as a key or value.
class	CompressedWritable A base-class for Writables which store themselves compressed and lazily inflate on field access.
class	FloatWritable A WritableComparable for floats.
class	GenericWritable A wrapper for Writable instances.
class	IntWritable A WritableComparable for ints.
class	LongWritable A WritableComparable for longs.
class	MD5Hash A Writable for MD5 hash values.
class	NullWritable Singleton Writable with no data.
class	ObjectWritable A polymorphic Writable that writes an instance with it's class name.
class	Text This class stores text using standard UTF8 encoding.
class	TwoDArrayWritable A Writable for 2D arrays containing a matrix of instances of a class.
class	VersionedWritable A base class for Writables that provides version checking.
class	VIntWritable A WritableComparable for integer values stored in variable-length format.
class	VLongWritable A WritableComparable for longs in a variable-length format.

Methods in org.apache.hadoop.io that return Writable

Modifier and Type	Method and Description
Writable[][]	TwoDArrayWritable.get()
Writable	GenericWritable.get() Return the wrapped instance.
Writable[]	ArrayWritable.get()
Writable	WritableFactory.newInstance() Return a new instance.
static Writable	WritableFactories.newInstance(Class c) Create a new instance of a class with a defined factory.
static Writable	WritableFactories.newInstance(Class c, Configuration conf) Create a new instance of a class with a defined factory.

Methods in org.apache.hadoop.io with parameters of type Writable

Modifier and Type	Method and Description
void	GenericWritable.set(Writable obj) Set the instance that is wrapped.
void	ArrayWritable.set(Writable[] values)
void	TwoDArrayWritable.set(Writable[][] values)

Constructors in org.apache.hadoop.io with parameters of type Writable

Constructor and Description
ArrayWritable(Class valueClass, Writable[] values)
TwoDArrayWritable(Class valueClass, Writable[][] values)

Uses of Writable in org.apache.nutch.crawl

Classes in org.apache.nutch.crawl that implement Writable

Modifier and Type	Class and Description
class	CrawlDatum
class	MapWritable A writable map, with a similar behavior as java.util.HashMap.

Methods in org.apache.nutch.crawl that return Writable

Modifier and Type	Method and Description
Writable	MapWritable.get(Writable key)
Writable	MapWritable.put(Writable key, Writable value)
Writable	MapWritable.remove(Writable key)

Methods in org.apache.nutch.crawl with parameters of type Writable

Modifier and Type	Method and Description
boolean	MapWritable.containsKey(Writable key)
boolean	MapWritable.containsValue(Writable value)
Writable	MapWritable.get(Writable key)
Writable	MapWritable.put(Writable key, Writable value)
Writable	MapWritable.remove(Writable key)

Uses of Writable in org.apache.nutch.fetcher

Classes in org.apache.nutch.fetcher that implement Writable

Modifier and Type	Class and Description
class	FetcherOutput

Uses of Writable in org.apache.nutch.metadata

Classes in org.apache.nutch.metadata that implement Writable

Modifier and Type	Class and Description
class	Metadata A multi-valued metadata container.
class	MetaWrapper This is a simple decorator that adds metadata to any Object-s that can be serialized by ObjectWritable.
class	SpellCheckedMetadata A decorator to Metadata that adds spellchecking capabilities to property names.

Uses of Writable in org.apache.nutch.parse

Classes in org.apache.nutch.parse that implement Writable

Modifier and Type	Class and Description
class	Outlink
class	ParseData Data extracted from a page's content.
class	ParseImpl The result of parsing a page's raw content.
class	ParseStatus
class	ParseText

Uses of Writable in org.apache.nutch.protocol

Classes in org.apache.nutch.protocol that implement Writable

Modifier and Type	Class and Description
class	Content
class	ProtocolStatus