Package org.apache.hadoop.io

Class SequenceFile.Metadata

java.lang.Object

org.apache.hadoop.io.SequenceFile.Metadata

All Implemented Interfaces:

Writable

Enclosing class:

SequenceFile

public static class SequenceFile.Metadata
extends java.lang.Object
implements Writable

The class encapsulating with the metadata of a file. The metadata of a file is a list of attribute name/value pairs of Text type.

Constructor Summary

Constructors

Constructor	Description
Metadata()
Metadata(java.util.TreeMap<Text,Text> arg)

Method Summary

Modifier and Type	Method	Description
boolean	equals(java.lang.Object other)
boolean	equals(SequenceFile.Metadata other)
Text	get(Text name)
java.util.TreeMap<Text,Text>	getMetadata()
int	hashCode()
void	readFields(java.io.DataInput in)	Deserialize the fields of this object from in.
void	set(Text name, Text value)
java.lang.String	toString()
void	write(java.io.DataOutput out)	Serialize the fields of this object to out.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Metadata

public Metadata()

Metadata

public Metadata(java.util.TreeMap<Text,Text> arg)

Method Detail

get

public Text get(Text name)

set

public void set(Text name,
                Text value)

getMetadata

public java.util.TreeMap<Text,Text> getMetadata()

write

public void write(java.io.DataOutput out)
           throws java.io.IOException

Description copied from interface: Writable

Serialize the fields of this object to out.

Specified by:

write in interface Writable

Parameters:

out - DataOuput to serialize this object into.

Throws:

java.io.IOException - any other problem for write.

readFields

public void readFields(java.io.DataInput in)
                throws java.io.IOException

Description copied from interface: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Specified by:

readFields in interface Writable

Parameters:

in - DataInput to deseriablize this object from.

Throws:

java.io.IOException - any other problem for readFields.

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class java.lang.Object

equals

public boolean equals(SequenceFile.Metadata other)

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object