org.apache.hadoop.mapreduce.lib.db

Class DBInputFormat.NullDBWritable

java.lang.Object

org.apache.hadoop.mapreduce.lib.db.DBInputFormat.NullDBWritable

All Implemented Interfaces:

org.apache.hadoop.io.Writable, DBWritable

Direct Known Subclasses:

DBInputFormat.NullDBWritable

Enclosing class:

DBInputFormat<T extends DBWritable>

public static class DBInputFormat.NullDBWritable
extends java.lang.Object
implements DBWritable, org.apache.hadoop.io.Writable

A Class that does nothing, implementing DBWritable

Constructor Summary

Constructors

Constructor and Description
DBInputFormat.NullDBWritable()

Method Summary

Methods

Modifier and Type	Method and Description
void	readFields(java.io.DataInput in)
void	readFields(java.sql.ResultSet arg0) Reads the fields of the object from the ResultSet.
void	write(java.io.DataOutput out)
void	write(java.sql.PreparedStatement arg0) Sets the fields of the object in the PreparedStatement.

Methods inherited from class java.lang.Object

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

Constructor Detail

DBInputFormat.NullDBWritable

public DBInputFormat.NullDBWritable()

Method Detail

readFields

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

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

java.io.IOException

readFields

public void readFields(java.sql.ResultSet arg0)
                throws java.sql.SQLException

Description copied from interface: DBWritable

Reads the fields of the object from the ResultSet.

Specified by:

readFields in interface DBWritable

Parameters:

arg0 - the ResultSet to get the fields from.

Throws:

java.sql.SQLException

write

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

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

java.io.IOException

write

public void write(java.sql.PreparedStatement arg0)
           throws java.sql.SQLException

Description copied from interface: DBWritable

Sets the fields of the object in the PreparedStatement.

Specified by:

write in interface DBWritable

Parameters:

arg0 - the statement that the fields are put into.

Throws:

java.sql.SQLException