SortFns (Apache Crunch 0.7.0 API)

This project has retired. For details please refer to its Attic page.

Overview

Package

Class

Use

Tree

Deprecated

Index

PREV CLASS NEXT CLASS

FRAMES NO FRAMES

SUMMARY: NESTED | FIELD | CONSTR | METHOD

DETAIL: FIELD | CONSTR | METHOD

org.apache.crunch.lib.sort
Class SortFns

java.lang.Object
  org.apache.crunch.lib.sort.SortFns

public class SortFns
extends Object
extends Object

A set of DoFns that are used by Crunch's Sort library.

Nested Class Summary

static class SortFns.AvroGenericFn<V extends Tuple>
          Pulls a composite set of keys from an Avro GenericRecord instance.

static class SortFns.KeyExtraction<V extends Tuple>
          Utility class for encapsulating key extraction logic and serialization information about key extraction.

static class SortFns.SingleKeyFn<V extends Tuple,K>
          Extracts a single indexed key from a Tuple instance.

static class SortFns.TupleKeyFn<V extends Tuple,K extends Tuple>
          Extracts a composite key from a Tuple instance.

Constructor Summary

SortFns()


Method Summary

static <S> org.apache.avro.Schema createOrderedTupleSchema(PType<S> ptype, Sort.ColumnOrder[] orders)
          Constructs an Avro schema for the given PType<S> that respects the given column orderings.

Methods inherited from class java.lang.Object

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

Nested Class Summary
`static class`	`SortFns.AvroGenericFn<V extends Tuple>` Pulls a composite set of keys from an Avro `GenericRecord` instance.
`static class`	`SortFns.KeyExtraction<V extends Tuple>` Utility class for encapsulating key extraction logic and serialization information about key extraction.
`static class`	`SortFns.SingleKeyFn<V extends Tuple,K>` Extracts a single indexed key from a `Tuple` instance.
`static class`	`SortFns.TupleKeyFn<V extends Tuple,K extends Tuple>` Extracts a composite key from a `Tuple` instance.

Constructor Summary
`SortFns()`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

SortFns

public SortFns()

Method Detail

createOrderedTupleSchema

public static <S> org.apache.avro.Schema createOrderedTupleSchema(PType<S> ptype,
                                                                  Sort.ColumnOrder[] orders)

Constructs an Avro schema for the given PType<S> that respects the given column orderings.