org.apache.crunch.types

Interface PTypeFamily

All Known Implementing Classes:

AvroTypeFamily, WritableTypeFamily

public interface PTypeFamily

An abstract factory for creating PType instances that have the same serialization/storage backing format.

Method Summary

Methods

Modifier and Type	Method and Description
<T> PType<T>	as(PType<T> ptype) Returns the equivalent of the given ptype for this family, if it exists.
PType<Boolean>	booleans()
PType<ByteBuffer>	bytes()
<T> PType<Collection<T>>	collections(PType<T> ptype)
<S,T> PType<T>	derived(Class<T> clazz, MapFn<S,T> inputFn, MapFn<T,S> outputFn, PType<S> base)
<S,T> PType<T>	derivedImmutable(Class<T> clazz, MapFn<S,T> inputFn, MapFn<T,S> outputFn, PType<S> base) A derived type whose values are immutable.
PType<Double>	doubles()
PType<Float>	floats()
PType<Integer>	ints()
PType<Long>	longs()
<T> PType<Map<String,T>>	maps(PType<T> ptype)
PType<Void>	nulls()
<V1,V2> PType<Pair<V1,V2>>	pairs(PType<V1> p1, PType<V2> p2)
<V1,V2,V3,V4> PType<Tuple4<V1,V2,V3,V4>>	quads(PType<V1> p1, PType<V2> p2, PType<V3> p3, PType<V4> p4)
<T> PType<T>	records(Class<T> clazz)
PType<String>	strings()
<K,V> PTableType<K,V>	tableOf(PType<K> key, PType<V> value)
<V1,V2,V3> PType<Tuple3<V1,V2,V3>>	triples(PType<V1> p1, PType<V2> p2, PType<V3> p3)
<T extends Tuple> PType<T>	tuples(Class<T> clazz, PType<?>... ptypes)
PType<TupleN>	tuples(PType<?>... ptypes)
PType<Union>	unionOf(PType<?>... ptypes)

Method Detail

nulls

PType<Void> nulls()

strings

PType<String> strings()

longs

PType<Long> longs()

ints

PType<Integer> ints()

floats

PType<Float> floats()

doubles

PType<Double> doubles()

booleans

PType<Boolean> booleans()

bytes

PType<ByteBuffer> bytes()

records

<T> PType<T> records(Class<T> clazz)

collections

<T> PType<Collection<T>> collections(PType<T> ptype)

maps

<T> PType<Map<String,T>> maps(PType<T> ptype)

pairs

<V1,V2> PType<Pair<V1,V2>> pairs(PType<V1> p1,
                               PType<V2> p2)

triples

<V1,V2,V3> PType<Tuple3<V1,V2,V3>> triples(PType<V1> p1,
                                         PType<V2> p2,
                                         PType<V3> p3)

quads

<V1,V2,V3,V4> PType<Tuple4<V1,V2,V3,V4>> quads(PType<V1> p1,
                                             PType<V2> p2,
                                             PType<V3> p3,
                                             PType<V4> p4)

tuples

PType<TupleN> tuples(PType<?>... ptypes)

tuples

<T extends Tuple> PType<T> tuples(Class<T> clazz,
                                PType<?>... ptypes)

derived

<S,T> PType<T> derived(Class<T> clazz,
                     MapFn<S,T> inputFn,
                     MapFn<T,S> outputFn,
                     PType<S> base)

derivedImmutable

<S,T> PType<T> derivedImmutable(Class<T> clazz,
                              MapFn<S,T> inputFn,
                              MapFn<T,S> outputFn,
                              PType<S> base)

A derived type whose values are immutable. This variaion of derived exists to optimize for the case where deep-copying of data is never needed.

unionOf

PType<Union> unionOf(PType<?>... ptypes)

tableOf

<K,V> PTableType<K,V> tableOf(PType<K> key,
                            PType<V> value)

as

<T> PType<T> as(PType<T> ptype)

Returns the equivalent of the given ptype for this family, if it exists.