org.kitesdk.data.partition
Class HashFieldPartitioner

java.lang.Object
  org.kitesdk.data.FieldPartitioner<Object,Integer>
      org.kitesdk.data.partition.HashFieldPartitioner

All Implemented Interfaces:

com.google.common.base.Function<Object,Integer>, Comparator<Integer>

public class HashFieldPartitioner
extends FieldPartitioner<Object,Integer>

Constructor Summary

HashFieldPartitioner(String name, int buckets)

HashFieldPartitioner(String sourceName, String name, int buckets)

Method Summary

Integer	apply(Object value) Apply the partition function to the given value.
int	compare(Integer o1, Integer o2)
boolean	equals(Object o)
int	hashCode()
com.google.common.base.Predicate<Integer>	project(com.google.common.base.Predicate<Object> predicate) Projects a source-data constraint Predicate into the image of the backing partition function.
String	toString()
Integer	valueFromString(String stringValue) Deprecated.

Methods inherited from class org.kitesdk.data.FieldPartitioner

getCardinality, getName, getSourceName, getSourceType, getType, valueToString

Methods inherited from class java.lang.Object

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

Constructor Detail

HashFieldPartitioner

public HashFieldPartitioner(String name,
                            int buckets)

HashFieldPartitioner

public HashFieldPartitioner(String sourceName,
                            String name,
                            int buckets)

Method Detail

apply

public Integer apply(Object value)

Description copied from class: FieldPartitioner

Apply the partition function to the given value.

The type of value must be compatible with the field partitioner implementation. Normally, this is validated at the time of initial configuration rather than at runtime.

Specified by:

apply in interface com.google.common.base.Function<Object,Integer>

Specified by:

apply in class FieldPartitioner<Object,Integer>

valueFromString

@Deprecated
public Integer valueFromString(String stringValue)

Deprecated.

Description copied from class: FieldPartitioner

Retrieve the value for the field from the string representation.

Specified by:

valueFromString in class FieldPartitioner<Object,Integer>

project

public com.google.common.base.Predicate<Integer> project(com.google.common.base.Predicate<Object> predicate)

Description copied from class: FieldPartitioner

Projects a source-data constraint Predicate into the image of the backing partition function. If the function cannot be projected exactly, the resulting predicate must be more permissive than the original predicate.

Specified by:

project in class FieldPartitioner<Object,Integer>

equals

public boolean equals(Object o)

Specified by:

equals in interface com.google.common.base.Function<Object,Integer>

Specified by:

equals in interface Comparator<Integer>

Overrides:

equals in class Object

compare

public int compare(Integer o1,
                   Integer o2)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object