Package io.permazen.core

Interface IndexSwitch<R>

Type Parameters:

R - switch method return type

public interface IndexSwitch<R>

Visitor pattern interface for Indexes.

See Also:

• Index.visit()

Method Summary

Modifier and Type	Method	Description
default <C extends Collection<E>, E> R	caseCollectionElementIndex(CollectionElementIndex<C,E> index)	Visitor pattern roll-up method.
default <C, T> R	caseComplexSubFieldIndex(ComplexSubFieldIndex<C,T> index)	Visitor pattern roll-up method.
default R	caseCompositeIndex(CompositeIndex index)	Handle a CompositeIndex.
default R	caseIndex(Index index)	Visitor pattern roll-up method.
default <E> R	caseListElementIndex(ListElementIndex<E> index)	Handle a ListElementIndex.
default <K, V> R	caseMapKeyIndex(MapKeyIndex<K,V> index)	Handle a MapKeyIndex.
default <K, V> R	caseMapValueIndex(MapValueIndex<K,V> index)	Handle a MapValueIndex.
default <E> R	caseSetElementIndex(SetElementIndex<E> index)	Handle a SetElementIndex.
default <T> R	caseSimpleFieldIndex(SimpleFieldIndex<T> index)	Handle a SimpleFieldIndex.
default <T> R	caseSimpleIndex(SimpleIndex<T> index)	Visitor pattern roll-up method.

Method Details

caseSimpleFieldIndex

default <T> R caseSimpleFieldIndex(SimpleFieldIndex<T> index)

Handle a SimpleFieldIndex.

The implementation in IndexSwitch delegates to caseSimpleIndex().

Type Parameters:

T - field value type

Parameters:

index - visiting index

Returns:

visitor return value

caseListElementIndex

default <E> R caseListElementIndex(ListElementIndex<E> index)

Handle a ListElementIndex.

The implementation in IndexSwitch delegates to caseCollectionElementIndex().

Type Parameters:

E - list element type

Parameters:

index - visiting index

Returns:

visitor return value

caseSetElementIndex

default <E> R caseSetElementIndex(SetElementIndex<E> index)

Handle a SetElementIndex.

The implementation in IndexSwitch delegates to caseCollectionElementIndex().

Type Parameters:

E - set element type

Parameters:

index - visiting index

Returns:

visitor return value

caseMapKeyIndex

default <K,
V> R caseMapKeyIndex(MapKeyIndex<K,V> index)

Handle a MapKeyIndex.

The implementation in IndexSwitch delegates to caseComplexSubFieldIndex().

Type Parameters:

K - map key type

V - map value type

Parameters:

index - visiting index

Returns:

visitor return value

caseMapValueIndex

default <K,
V> R caseMapValueIndex(MapValueIndex<K,V> index)

Handle a MapValueIndex.

The implementation in IndexSwitch delegates to caseComplexSubFieldIndex().

Type Parameters:

K - map key type

V - map value type

Parameters:

index - visiting index

Returns:

visitor return value

caseCompositeIndex

default R caseCompositeIndex(CompositeIndex index)

Handle a CompositeIndex.

The implementation in IndexSwitch delegates to caseIndex().

Parameters:

index - visiting index

Returns:

visitor return value

caseCollectionElementIndex

default <C extends Collection<E>,
E> R caseCollectionElementIndex(CollectionElementIndex<C,E> index)

Visitor pattern roll-up method.

The implementation in IndexSwitch delegates to caseComplexSubFieldIndex().

Type Parameters:

C - field value type

E - collection element type

Parameters:

index - visiting index

Returns:

visitor return value

caseComplexSubFieldIndex

default <C,
T> R caseComplexSubFieldIndex(ComplexSubFieldIndex<C,T> index)

Visitor pattern roll-up method.

The implementation in IndexSwitch delegates to caseSimpleIndex().

Type Parameters:

T - field value type

Parameters:

index - visiting index

Returns:

visitor return value

caseSimpleIndex

default <T> R caseSimpleIndex(SimpleIndex<T> index)

Visitor pattern roll-up method.

The implementation in IndexSwitch delegates to caseIndex().

Type Parameters:

T - field value type

Parameters:

index - visiting index

Returns:

visitor return value

caseIndex

default R caseIndex(Index index)

Visitor pattern roll-up method.

The implementation in IndexSwitch always throws UnsupportedOperationException.

Parameters:

index - visiting index

Returns:

visitor return value