com.asakusafw.runtime.io.util

Class WritableRawComparableTuple

java.lang.Object

com.asakusafw.runtime.io.util.WritableRawComparableTuple

All Implemented Interfaces:

Tuple, WritableRawComparable, Comparable<WritableRawComparable>, org.apache.hadoop.io.Writable, org.apache.hadoop.io.WritableComparable<WritableRawComparable>

Direct Known Subclasses:

DirectOutputOrder

public class WritableRawComparableTuple
extends Object
implements WritableRawComparable, Tuple

An abstract implementation of tuples.

Since:

0.2.5

Constructor Summary

Constructors

Constructor and Description
WritableRawComparableTuple(Class<?>... classes) Creates a new instance.
WritableRawComparableTuple(WritableRawComparable... objects) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
int	compareInBytes(byte[] b1, int o1, byte[] b2, int o2) Compares two objects in bytes.
int	compareTo(WritableRawComparable o)
boolean	equals(Object obj)
Object	get(int index) Returns the element in this tuple.
int	getSizeInBytes(byte[] buf, int offset) Computes and returns size in bytes.
int	hashCode()
void	readFields(DataInput in)
int	size() Returns the number of elements in this tuple.
String	toString()
void	write(DataOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

WritableRawComparableTuple

public WritableRawComparableTuple(Class<?>... classes)

Creates a new instance.

Parameters:

classes - element classes

Throws:

IllegalArgumentException - if some parameters were null

WritableRawComparableTuple

public WritableRawComparableTuple(WritableRawComparable... objects)

Creates a new instance.

Parameters:

objects - elements

Throws:

IllegalArgumentException - if some parameters were null

Method Detail

size

public final int size()

Description copied from interface: Tuple

Returns the number of elements in this tuple.

Specified by:

size in interface Tuple

Returns:

the size

get

public final Object get(int index)

Description copied from interface: Tuple

Returns the element in this tuple.

Specified by:

get in interface Tuple

Parameters:

index - element index (0-based)

Returns:

the element

write

public final void write(DataOutput out)
                 throws IOException

Specified by:

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

Throws:

IOException

readFields

public final void readFields(DataInput in)
                      throws IOException

Specified by:

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

Throws:

IOException

compareTo

public final int compareTo(WritableRawComparable o)

Specified by:

compareTo in interface Comparable<WritableRawComparable>

getSizeInBytes

public final int getSizeInBytes(byte[] buf,
                                int offset)
                         throws IOException

Description copied from interface: WritableRawComparable

Computes and returns size in bytes.

Specified by:

getSizeInBytes in interface WritableRawComparable

Parameters:

buf - bytes array

offset - bytes offset

Returns:

size in bytes

Throws:

IOException - if failed to compute size

compareInBytes

public final int compareInBytes(byte[] b1,
                                int o1,
                                byte[] b2,
                                int o2)
                         throws IOException

Description copied from interface: WritableRawComparable

Compares two objects in bytes.

Specified by:

compareInBytes in interface WritableRawComparable

Parameters:

b1 - bytes representation of the first object

o1 - offset of the first object

b2 - bytes representation of the second object

o2 - offset of the second object

Returns:

the comparison result

Throws:

IOException - if failed to comparison

hashCode

public final int hashCode()

Overrides:

hashCode in class Object

equals

public final boolean equals(Object obj)

Overrides:

equals in class Object

toString

public final String toString()

Overrides:

toString in class Object