com.aol.cyclops.internal.comprehensions.comprehenders.transformers

Class OptionalTValueComprehender

java.lang.Object

com.aol.cyclops.internal.comprehensions.comprehenders.transformers.OptionalTValueComprehender

All Implemented Interfaces:

Comprehender<OptionalTValue>, ValueComprehender<OptionalTValue>, Printable

public class OptionalTValueComprehender
extends java.lang.Object
implements ValueComprehender<OptionalTValue>, Printable

Constructor Summary

Constructors

Constructor and Description
OptionalTValueComprehender()

Method Summary

Modifier and Type	Method and Description
OptionalTValue	empty()
java.lang.Object	filter(OptionalTValue t, java.util.function.Predicate p) Wrapper around filter
java.lang.Object	flatMap(OptionalTValue t, java.util.function.Function fn)
java.lang.Class	getTargetClass()
java.lang.Object	map(OptionalTValue t, java.util.function.Function fn) Wrapper around map
OptionalTValue	of(java.lang.Object o)
java.lang.Object	resolveForCrossTypeFlatMap(Comprehender comp, OptionalTValue apply) Answers the question how should this type behave when returned in a flatMap function by another type? For example - Optional uses comp.of(opt.get()) when a value is present and comp.empty() when no value is present.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.aol.cyclops.types.extensability.ValueComprehender

fromIterator

Methods inherited from interface com.aol.cyclops.types.extensability.Comprehender

executeflatMap, instanceOfT, liftAndFlatMap, liftObject, priority, unwrap, unwrapOtherMonadTypes

Methods inherited from interface com.aol.cyclops.types.mixins.Printable

print

Constructor Detail

OptionalTValueComprehender

public OptionalTValueComprehender()

Method Detail

resolveForCrossTypeFlatMap

public java.lang.Object resolveForCrossTypeFlatMap(Comprehender comp,
                                                   OptionalTValue apply)

Description copied from interface: Comprehender

Answers the question how should this type behave when returned in a flatMap function by another type? For example - Optional uses comp.of(opt.get()) when a value is present and comp.empty() when no value is present.

Specified by:

resolveForCrossTypeFlatMap in interface Comprehender<OptionalTValue>

Returns:

filter

public java.lang.Object filter(OptionalTValue t,
                               java.util.function.Predicate p)

Description copied from interface: Comprehender

Wrapper around filter

Specified by:

filter in interface Comprehender<OptionalTValue>

Parameters:

t - Monadic type being wrapped

p - JDK Predicate to wrap

Returns:

Result of call to

 t.filter ( i -> p.test(i)); 

map

public java.lang.Object map(OptionalTValue t,
                            java.util.function.Function fn)

Description copied from interface: Comprehender

Wrapper around map

Specified by:

map in interface Comprehender<OptionalTValue>

Parameters:

t - Monadic type being wrapped

fn - JDK Function to wrap

Returns:

Result of call to

 t.map( i -> fn.apply(i)); 

flatMap

public java.lang.Object flatMap(OptionalTValue t,
                                java.util.function.Function fn)

Specified by:

flatMap in interface Comprehender<OptionalTValue>

of

public OptionalTValue of(java.lang.Object o)

Specified by:

of in interface Comprehender<OptionalTValue>

empty

public OptionalTValue empty()

Specified by:

empty in interface Comprehender<OptionalTValue>

getTargetClass

public java.lang.Class getTargetClass()

Specified by:

getTargetClass in interface Comprehender<OptionalTValue>