Package org.apache.hadoop.streaming.io

Class IdentifierResolver

java.lang.Object

org.apache.hadoop.streaming.io.IdentifierResolver

public class IdentifierResolver
extends java.lang.Object

This class is used to resolve a string identifier into the required IO classes. By extending this class and pointing the property stream.io.identifier.resolver.class to this extension, additional IO classes can be added by external code.

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.String	KEY_ONLY_TEXT_ID
static java.lang.String	RAW_BYTES_ID
static java.lang.String	TEXT_ID
static java.lang.String	TYPED_BYTES_ID

Constructor Summary

Constructors

Constructor	Description
IdentifierResolver()

Method Summary

Modifier and Type	Method	Description
java.lang.Class<? extends InputWriter>	getInputWriterClass()	Returns the resolved InputWriter class.
java.lang.Class	getOutputKeyClass()	Returns the resolved output key class.
java.lang.Class<? extends OutputReader>	getOutputReaderClass()	Returns the resolved OutputReader class.
java.lang.Class	getOutputValueClass()	Returns the resolved output value class.
void	resolve(java.lang.String identifier)	Resolves a given identifier.
protected void	setInputWriterClass(java.lang.Class<? extends InputWriter> inputWriterClass)	Sets the InputWriter class.
protected void	setOutputKeyClass(java.lang.Class outputKeyClass)	Sets the output key class class.
protected void	setOutputReaderClass(java.lang.Class<? extends OutputReader> outputReaderClass)	Sets the OutputReader class.
protected void	setOutputValueClass(java.lang.Class outputValueClass)	Sets the output value class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

TEXT_ID

public static final java.lang.String TEXT_ID

See Also:

Constant Field Values

RAW_BYTES_ID

public static final java.lang.String RAW_BYTES_ID

See Also:

Constant Field Values

TYPED_BYTES_ID

public static final java.lang.String TYPED_BYTES_ID

See Also:

Constant Field Values

KEY_ONLY_TEXT_ID

public static final java.lang.String KEY_ONLY_TEXT_ID

See Also:

Constant Field Values

Constructor Detail

IdentifierResolver

public IdentifierResolver()

Method Detail

resolve

public void resolve(java.lang.String identifier)

Resolves a given identifier. This method has to be called before calling any of the getters.

getInputWriterClass

public java.lang.Class<? extends InputWriter> getInputWriterClass()

Returns the resolved InputWriter class.

getOutputReaderClass

public java.lang.Class<? extends OutputReader> getOutputReaderClass()

Returns the resolved OutputReader class.

getOutputKeyClass

public java.lang.Class getOutputKeyClass()

Returns the resolved output key class.

getOutputValueClass

public java.lang.Class getOutputValueClass()

Returns the resolved output value class.

setInputWriterClass

protected void setInputWriterClass(java.lang.Class<? extends InputWriter> inputWriterClass)

Sets the InputWriter class.

setOutputReaderClass

protected void setOutputReaderClass(java.lang.Class<? extends OutputReader> outputReaderClass)

Sets the OutputReader class.

setOutputKeyClass

protected void setOutputKeyClass(java.lang.Class outputKeyClass)

Sets the output key class class.

setOutputValueClass

protected void setOutputValueClass(java.lang.Class outputValueClass)

Sets the output value class.