edu.umn.cs.spatialHadoop.core

Class Partitioner

java.lang.Object

edu.umn.cs.spatialHadoop.core.Partitioner

Direct Known Subclasses:

GridPartitioner

public abstract class Partitioner
extends java.lang.Object

An interface for spatially partitioning data into partitions.

Author:

Ahmed Eldawy

Constructor Summary

Constructors

Constructor and Description
Partitioner()

Method Summary

Methods

Modifier and Type	Method and Description
abstract CellInfo	getPartition(int partitionID) Returns the details of a specific partition.
static Partitioner	getPartitioner(Configuration conf) Retrieves the value of a partitioner for a given job.
abstract void	overlapPartitions(Shape shape, ResultCollector<java.lang.Integer> matcher) Overlap a shape with partitions and calls a matcher for each overlapping partition.
static void	setPartitioner(Configuration conf, Partitioner partitioner) Sets the class and value of a partitioner in the given job

Methods inherited from class java.lang.Object

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

Constructor Detail

Partitioner

public Partitioner()

Method Detail

overlapPartitions

public abstract void overlapPartitions(Shape shape,
                     ResultCollector<java.lang.Integer> matcher)

Overlap a shape with partitions and calls a matcher for each overlapping partition.

Parameters:

shape -

matcher -

getPartition

public abstract CellInfo getPartition(int partitionID)

Returns the details of a specific partition.

Parameters:

partitionID -

Returns:

setPartitioner

public static void setPartitioner(Configuration conf,
                  Partitioner partitioner)
                           throws java.io.IOException

Sets the class and value of a partitioner in the given job

Parameters:

conf -

partitioner -

Throws:

java.io.IOException

getPartitioner

public static Partitioner getPartitioner(Configuration conf)

Retrieves the value of a partitioner for a given job.

Parameters:

conf -

Returns: