org.apache.giraph.utils

Class ArrayListWritable<M extends org.apache.hadoop.io.Writable>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<E>

java.util.ArrayList<M>

org.apache.giraph.utils.ArrayListWritable<M>

Type Parameters:

M - Message data

All Implemented Interfaces:

Serializable, Cloneable, Iterable<M>, Collection<M>, List<M>, RandomAccess, org.apache.hadoop.conf.Configurable, org.apache.hadoop.io.Writable

public abstract class ArrayListWritable<M extends org.apache.hadoop.io.Writable>
extends ArrayList<M>
implements org.apache.hadoop.io.Writable, org.apache.hadoop.conf.Configurable

A Writable for ListArray containing instances of a class.

See Also:

Serialized Form

Field Summary

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
ArrayListWritable() Using the default constructor requires that the user implement setClass(), guaranteed to be invoked prior to instantiation in readFields()
ArrayListWritable(ArrayListWritable<M> arrayListWritable) Constructor with another ArrayListWritable.
ArrayListWritable(Class<M> refClass) This constructor allows setting the refClass during construction.

Method Summary

Modifier and Type	Method and Description
org.apache.hadoop.conf.Configuration	getConf()
void	readFields(DataInput in)
abstract void	setClass() Subclasses must set the class type appropriately and can use setClass(Class<M> refClass) to do it.
void	setClass(Class<M> refClass) This is a one-time operation to set the class type
void	setConf(org.apache.hadoop.conf.Configuration conf)
void	write(DataOutput out)

Methods inherited from class java.util.ArrayList

add, add, addAll, addAll, clear, clone, contains, ensureCapacity, forEach, get, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, removeIf, removeRange, replaceAll, retainAll, set, size, sort, spliterator, subList, toArray, toArray, trimToSize

Methods inherited from class java.util.AbstractList

equals, hashCode

Methods inherited from class java.util.AbstractCollection

containsAll, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.List

containsAll, equals, hashCode

Methods inherited from interface java.util.Collection

parallelStream, stream

Constructor Detail

ArrayListWritable

public ArrayListWritable()

Using the default constructor requires that the user implement setClass(), guaranteed to be invoked prior to instantiation in readFields()

ArrayListWritable

public ArrayListWritable(ArrayListWritable<M> arrayListWritable)

Constructor with another ArrayListWritable.

Parameters:

arrayListWritable - Array list to be used internally.

ArrayListWritable

public ArrayListWritable(Class<M> refClass)

This constructor allows setting the refClass during construction.

Parameters:

refClass - internal type class

Method Detail

setClass

public void setClass(Class<M> refClass)

This is a one-time operation to set the class type

Parameters:

refClass - internal type class

setClass

public abstract void setClass()

Subclasses must set the class type appropriately and can use setClass(Class<M> refClass) to do it.

readFields

public void readFields(DataInput in)
                throws IOException

Specified by:

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

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Specified by:

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

Throws:

IOException

getConf

public final org.apache.hadoop.conf.Configuration getConf()

Specified by:

getConf in interface org.apache.hadoop.conf.Configurable

setConf

public final void setConf(org.apache.hadoop.conf.Configuration conf)

Specified by:

setConf in interface org.apache.hadoop.conf.Configurable