org.apache.nutch.io
Class SequenceFile.Writer

java.lang.Object
  org.apache.nutch.io.SequenceFile.Writer

Enclosing class:

SequenceFile

public static class SequenceFile.Writer

extends Object

Write key/value pairs to a sequence-format file.

Constructor Summary

SequenceFile.Writer(NutchFileSystem nfs, String name, Class keyClass, Class valClass)
Create the named file.

Method Summary

void	append(byte[] data, int start, int length, int keyLength) Append a key/value pair.
void	append(Writable key, Writable val) Append a key/value pair.
void	close() Close the file.
Class	getKeyClass() Returns the class of keys in this file.
long	getLength() Returns the current length of the output file.
Class	getValueClass() Returns the class of values in this file.

Methods inherited from class java.lang.Object

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

Constructor Detail

SequenceFile.Writer

public SequenceFile.Writer(NutchFileSystem nfs,
                           String name,
                           Class keyClass,
                           Class valClass)
                    throws IOException

Create the named file.

Method Detail

getKeyClass

public Class getKeyClass()

Returns the class of keys in this file.

getValueClass

public Class getValueClass()

Returns the class of values in this file.

close

public void close()
           throws IOException

Close the file.

Throws:

IOException

append

public void append(Writable key,
                   Writable val)
            throws IOException

Append a key/value pair.

Throws:

IOException

append

public void append(byte[] data,
                   int start,
                   int length,
                   int keyLength)
            throws IOException

Append a key/value pair.

Throws:

IOException

getLength

public long getLength()
               throws IOException

Returns the current length of the output file.

Throws:

IOException