Package org.aksw.commons.index

Class StorageComposers

java.lang.Object

org.aksw.commons.index.StorageComposers

public class StorageComposers
extends Object

A collection of static methods for composing storage structures such as arbitrarily nested maps

Author:

Claus Stadler 11/09/2020

Constructor Summary

Constructors

Constructor	Description
StorageComposers()

Method Summary

Modifier and Type	Method	Description
static <D, C, V1, V2> StorageNodeMutable<D,C,Alt2<V1,V2>>	alt2(StorageNodeMutable<D,C,V1> child1, StorageNodeMutable<D,C,V2> child2)
static <D, C, V1, V2, V3> StorageNodeMutable<D,C,Alt3<V1,V2,V3>>	alt3(StorageNodeMutable<D,C,V1> child1, StorageNodeMutable<D,C,V2> child2, StorageNodeMutable<D,C,V3> child3)
static <D, C> StorageNodeMutable<D,C,?>	altN(List<? extends StorageNodeMutable<D,C,?>> children)	Generic construction for composition from multiple composers Breaks strong typing in contrast to static alternatives{1, 2, ...} constructions that could e.g.
static <D, C, V, S extends Map<C, V>> StorageNodeMutable<D,C,S>	innerMap(int tupleIdx, MapSupplier mapSupplier, StorageNodeMutable<D,C,V> child)
static <D, C, S extends Set<C>> StorageNodeMutable<D,C,S>	leafComponentSet(int tupleIdx, SetSupplier setSupplier, TupleBridge<D,C> tupleAccessor)
static <D, C> StorageNodeMutable<D,C,List<D>>	leafList(ListSupplier listSupplier, TupleBridge<D,C> tupleAccessor)
static <D, C, S extends Map<C, D>> StorageNodeMutable<D,C,S>	leafMap(int tupleIdx, MapSupplier mapSupplier, TupleBridge<D,C> tupleAccessor)
static <D, C, S extends Set<D>> StorageNodeMutable<D,C,S>	leafSet(SetSupplier setSupplier, TupleBridge<D,C> tupleAccessor)
static <D, C, V> StorageNodeMutable<D,C,V>	postProcessAdd(StorageNodeMutable<D,C,V> delegate, BiConsumer<V,D> postProcessor)	A wrapper for a StorageNodeMutable.add(Object, Object) that allows for running a post processing action after a regular insert.
static <D, C, V, X extends StorageNodeMutable<D, C, V>> StorageNodeWrapperCodec<D,C,V,X>	wrapWithCanonicalization(X delegate)	Canonicalization maps all equivalent tuples and components w.r.t.
static <D1, C1, D2, C2, V, X extends StorageNodeMutable<D2, C2, V>> StorageNodeMutable<D1,C1,V>	wrapWithDictionary(X delegate, TupleBridge<D1,C1> sourceTupleAccessor)	DON'T USE ; maintain a TupleCodec separately instead

Methods inherited from class java.lang.Object

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

Constructor Details

StorageComposers

public StorageComposers()

Method Details

leafSet

public static <D,
C,
S extends Set<D>>
StorageNodeMutable<D,C,S> leafSet(SetSupplier setSupplier,
 TupleBridge<D,C> tupleAccessor)

leafComponentSet

public static <D,
C,
S extends Set<C>>
StorageNodeMutable<D,C,S> leafComponentSet(int tupleIdx,
 SetSupplier setSupplier,
 TupleBridge<D,C> tupleAccessor)

leafList

public static <D,
C> StorageNodeMutable<D,C,List<D>> leafList(ListSupplier listSupplier,
 TupleBridge<D,C> tupleAccessor)

leafMap

public static <D,
C,
S extends Map<C,
D>>
StorageNodeMutable<D,C,S> leafMap(int tupleIdx,
 MapSupplier mapSupplier,
 TupleBridge<D,C> tupleAccessor)

innerMap

public static <D,
C,
V,
S extends Map<C,
V>>
StorageNodeMutable<D,C,S> innerMap(int tupleIdx,
 MapSupplier mapSupplier,
 StorageNodeMutable<D,C,V> child)

altN

public static <D,
C> StorageNodeMutable<D,C,?> altN(List<? extends StorageNodeMutable<D,C,?>> children)

Generic construction for composition from multiple composers Breaks strong typing in contrast to static alternatives{1, 2, ...} constructions that could e.g. yield Map<Foo, Alternatives3<Bar, Baz, Bax>> types

Type Parameters:

D -

C -

V -

Parameters:

tupleIdx -

mapSupplier -

child -

Returns:

alt2

public static <D,
C,
V1,
V2>
StorageNodeMutable<D,C,Alt2<V1,V2>> alt2(StorageNodeMutable<D,C,V1> child1,
 StorageNodeMutable<D,C,V2> child2)

alt3

public static <D,
C,
V1,
V2,
V3>
StorageNodeMutable<D,C,Alt3<V1,V2,V3>> alt3(StorageNodeMutable<D,C,V1> child1,
 StorageNodeMutable<D,C,V2> child2,
 StorageNodeMutable<D,C,V3> child3)

postProcessAdd

public static <D,
C,
V> StorageNodeMutable<D,C,V> postProcessAdd(StorageNodeMutable<D,C,V> delegate,
 BiConsumer<V,D> postProcessor)

A wrapper for a StorageNodeMutable.add(Object, Object) that allows for running a post processing action after a regular insert.

Type Parameters:

D -

C -

V -

Parameters:

delegate -

postProcessor -

Returns:

wrapWithCanonicalization

public static <D,
C,
V,
X extends StorageNodeMutable<D,
C,
V>>
StorageNodeWrapperCodec<D,C,V,X> wrapWithCanonicalization(X delegate)

Canonicalization maps all equivalent tuples and components w.r.t. .equals() to canonical instances such that '==' becomes sufficient for equality checks.

Type Parameters:

D -

C -

V -

X -

Parameters:

delegate -

Returns:

wrapWithDictionary

public static <D1,
C1,
D2,
C2,
V,
X extends StorageNodeMutable<D2,
C2,
V>>
StorageNodeMutable<D1,C1,V> wrapWithDictionary(X delegate,
 TupleBridge<D1,C1> sourceTupleAccessor)

DON'T USE ; maintain a TupleCodec separately instead

Type Parameters:

D1 - The source domain tuple type, e.g. Triple

C1 - The source domain component type, e.g. Node

D2 - The target domain tuple type, e.g. int[]

C2 - The target domain component type, e.g. Integer

V - The type of the store structure being wrapped; must be based on D2 and C2

X - The type of the storage being wrapped