edu.umd.cloud9.io.array
Class ArrayListWritable<E extends Writable>

java.lang.Object
  java.util.AbstractCollection<E>
      java.util.AbstractList<E>
          java.util.ArrayList<E>
              edu.umd.cloud9.io.array.ArrayListWritable<E>

Type Parameters:

E - type of list element

All Implemented Interfaces:

Serializable, Cloneable, Iterable<E>, Collection<E>, List<E>, RandomAccess, Writable

public class ArrayListWritable<E extends Writable>
extends ArrayList<E>
implements Writable

Writable extension of a Java ArrayList. Elements in the list must be homogeneous and must implement Hadoop's Writable interface. This class, combined with Tuple, allows the user to define arbitrarily complex data structures.

Author:

Jimmy Lin, Tamer Elsayed

See Also:

Tuple, Serialized Form

Constructor Summary

ArrayListWritable()
Creates an ArrayListWritable object.

ArrayListWritable(ArrayList<E> array)
Creates an ArrayListWritable object from an ArrayList.

Method Summary

void	readFields(DataInput in) Deserializes the array.
String	toString() Generates human-readable String representation of this ArrayList.
void	write(DataOutput out) Serializes this array.

Methods inherited from class java.util.ArrayList

add, add, addAll, addAll, clear, clone, contains, ensureCapacity, get, indexOf, isEmpty, lastIndexOf, remove, remove, set, size, toArray, toArray, trimToSize

Methods inherited from class java.util.AbstractList

equals, hashCode, iterator, listIterator, listIterator, subList

Methods inherited from class java.util.AbstractCollection

containsAll, removeAll, retainAll

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

containsAll, equals, hashCode, iterator, listIterator, listIterator, removeAll, retainAll, subList

Constructor Detail

ArrayListWritable

public ArrayListWritable()

Creates an ArrayListWritable object.

ArrayListWritable

public ArrayListWritable(ArrayList<E> array)

Creates an ArrayListWritable object from an ArrayList.

Method Detail

readFields

public void readFields(DataInput in)
                throws IOException

Deserializes the array.

Specified by:

readFields in interface Writable

Parameters:

in - source for raw byte representation

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Serializes this array.

Specified by:

write in interface Writable

Parameters:

out - where to write the raw byte representation

Throws:

IOException

toString

public String toString()

Generates human-readable String representation of this ArrayList.

Overrides:

toString in class AbstractCollection<E extends Writable>

Returns:

human-readable String representation of this ArrayList