Package org.eclipse.epsilon.common.function

Interface BaseDelegate<T extends BaseDelegate<? extends T>>

All Known Subinterfaces:

ConcurrentBaseDelegate<T>

All Known Implementing Classes:

ExecutorFactory, FrameStack, RuleExecutorFactory

public interface BaseDelegate<T extends BaseDelegate<? extends T>>

Convenience interface for classes which may have a parent ("base") in order to delegate failed operations to (for example, variable lookups). Please note that such a strategy requires synchronisation or immutability in concurrent use cases. For example, if a collection in the parent is modified when a lookup is being delegated by a child, this can lead to ConcurrentModificationException. To mitigate this, a synchronized version of delegate methods are provided.

Since:

1.6

Author:

Sina Madani

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	BaseDelegate.MergeMode

Method Summary

Modifier and Type	Method	Description
default <R> R	delegateLookup(Function<T,R> method)
default <R> R	delegateLookup(Function<T,R> method, boolean syncOnBase)
default <R> R	delegateLookup(Function<T,R> method, Function<T,? extends Object> lockProperty)
static <T,R> R	delegateLookup(Function<T,R> method, T... instances)
static <T,R> R	delegateLookup(Function<T,R> method, T thisObj, T baseObj, Object lock)
T	getBase()
default T	getFrom(BaseDelegate.MergeMode mode)
default T	getTo(BaseDelegate.MergeMode mode)
void	merge(BaseDelegate.MergeMode mode)
default <C> void	mergeCollectionsUnique(Function<T,Collection<C>> colPropertyGetter, Supplier<? extends Collection<C>> targetColSup, BaseDelegate.MergeMode mode)

Method Detail

getBase

T getBase()

merge

void merge(BaseDelegate.MergeMode mode)

getFrom

default T getFrom(BaseDelegate.MergeMode mode)

getTo

default T getTo(BaseDelegate.MergeMode mode)

mergeCollectionsUnique

default <C> void mergeCollectionsUnique(Function<T,Collection<C>> colPropertyGetter,
                                        Supplier<? extends Collection<C>> targetColSup,
                                        BaseDelegate.MergeMode mode)

delegateLookup

default <R> R delegateLookup(Function<T,R> method)

delegateLookup

@SafeVarargs
static <T,R> R delegateLookup(Function<T,R> method,
                                    T... instances)

delegateLookup

default <R> R delegateLookup(Function<T,R> method,
                             boolean syncOnBase)

delegateLookup

default <R> R delegateLookup(Function<T,R> method,
                             Function<T,? extends Object> lockProperty)

delegateLookup

static <T,R> R delegateLookup(Function<T,R> method,
                                    T thisObj,
                                    T baseObj,
                                    Object lock)