org.eclipse.collections.impl.block.factory

Class Functions

java.lang.Object

org.eclipse.collections.impl.block.factory.Functions

public final class Functions
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Functions.BooleanFunctionChain<T1,T2>
static class	Functions.ByteFunctionChain<T1,T2>
static class	Functions.CharFunctionChain<T1,T2>
static class	Functions.DoubleFunctionChain<T1,T2>
static class	Functions.FloatFunctionChain<T1,T2>
static class	Functions.FunctionChain<T1,T2,T3>
static class	Functions.IntFunctionChain<T1,T2>
static class	Functions.LongFunctionChain<T1,T2>
static class	Functions.ShortFunctionChain<T1,T2>
static class	Functions.SizeFunction

Method Summary

Modifier and Type	Method and Description
static <T,P,R> org.eclipse.collections.api.block.function.Function<T,R>	bind(org.eclipse.collections.api.block.function.Function2<? super T,? super P,? extends R> function, P parameter) Bind the parameter passed to a Function2 into a new Function.
static <T1,T2> org.eclipse.collections.api.block.procedure.primitive.ObjectIntProcedure<T1>	bind(org.eclipse.collections.api.block.procedure.primitive.ObjectIntProcedure<? super T2> delegate, org.eclipse.collections.api.block.function.Function<? super T1,T2> function) Bind the input of a ObjectIntProcedure to the result of an function, returning a new ObjectIntProcedure.
static <T1,T2> org.eclipse.collections.api.block.procedure.Procedure<T1>	bind(org.eclipse.collections.api.block.procedure.Procedure<? super T2> delegate, org.eclipse.collections.api.block.function.Function<? super T1,T2> function) Bind the input of a Procedure to the result of an function, returning a new Procedure.
static <T1,T2,T3> org.eclipse.collections.api.block.procedure.Procedure2<T1,T3>	bind(org.eclipse.collections.api.block.procedure.Procedure2<? super T2,T3> delegate, org.eclipse.collections.api.block.function.Function<? super T1,T2> function) Bind the input of the first argument of a Procedure2 to the result of an function, returning a new Procedure2.
static <T extends Comparable<? super T>,V> CaseFunction<T,V>	caseDefault(org.eclipse.collections.api.block.function.Function<? super T,? extends V> defaultFunction)
static <T extends Comparable<? super T>,V> CaseFunction<T,V>	caseDefault(org.eclipse.collections.api.block.function.Function<? super T,? extends V> defaultFunction, org.eclipse.collections.api.block.predicate.Predicate<? super T> predicate, org.eclipse.collections.api.block.function.Function<? super T,? extends V> function)
static <T,V> org.eclipse.collections.api.block.function.Function<T,V>	cast(org.eclipse.collections.api.block.function.Function<T,V> function) Allows a Java 8 lambda and method reference to be used in a method taking a Function as a parameter without any ambiguity.
static <T1,T2,T3> Functions.FunctionChain<T1,T2,T3>	chain(org.eclipse.collections.api.block.function.Function<T1,T2> function1, org.eclipse.collections.api.block.function.Function<? super T2,T3> function2)
static <T1,T2> Functions.BooleanFunctionChain<T1,T2>	chainBoolean(org.eclipse.collections.api.block.function.Function<T1,T2> function1, org.eclipse.collections.api.block.function.primitive.BooleanFunction<? super T2> function2)
static <T1,T2> Functions.ByteFunctionChain<T1,T2>	chainByte(org.eclipse.collections.api.block.function.Function<T1,T2> function1, org.eclipse.collections.api.block.function.primitive.ByteFunction<? super T2> function2)
static <T1,T2> Functions.CharFunctionChain<T1,T2>	chainChar(org.eclipse.collections.api.block.function.Function<T1,T2> function1, org.eclipse.collections.api.block.function.primitive.CharFunction<? super T2> function2)
static <T1,T2> Functions.DoubleFunctionChain<T1,T2>	chainDouble(org.eclipse.collections.api.block.function.Function<T1,T2> function1, org.eclipse.collections.api.block.function.primitive.DoubleFunction<? super T2> function2)
static <T1,T2> Functions.FloatFunctionChain<T1,T2>	chainFloat(org.eclipse.collections.api.block.function.Function<T1,T2> function1, org.eclipse.collections.api.block.function.primitive.FloatFunction<? super T2> function2)
static <T1,T2> Functions.IntFunctionChain<T1,T2>	chainInt(org.eclipse.collections.api.block.function.Function<T1,T2> function1, org.eclipse.collections.api.block.function.primitive.IntFunction<? super T2> function2)
static <T1,T2> Functions.LongFunctionChain<T1,T2>	chainLong(org.eclipse.collections.api.block.function.Function<T1,T2> function1, org.eclipse.collections.api.block.function.primitive.LongFunction<? super T2> function2)
static <T1,T2> Functions.ShortFunctionChain<T1,T2>	chainShort(org.eclipse.collections.api.block.function.Function<T1,T2> function1, org.eclipse.collections.api.block.function.primitive.ShortFunction<? super T2> function2)
static org.eclipse.collections.api.block.function.Function<String,Class<?>>	classForName()
static <T1,T2,I extends Iterable<T2>> org.eclipse.collections.api.block.function.Function<T1,I>	firstNotEmptyCollectionValue(org.eclipse.collections.api.block.function.Function<T1,I>... functions)
static <T> org.eclipse.collections.api.block.function.Function<T,String>	firstNotEmptyStringValue(org.eclipse.collections.api.block.function.Function<T,String>... functions)
static <T,V> org.eclipse.collections.api.block.function.Function<T,V>	firstNotNullValue(org.eclipse.collections.api.block.function.Function<T,V>... functions)
static <V1> org.eclipse.collections.api.block.function.Function<org.eclipse.collections.api.tuple.Pair<V1,?>,V1>	firstOfPair()
static org.eclipse.collections.api.block.function.Function<Double,Double>	getDoublePassThru()
static org.eclipse.collections.api.block.function.Function<Object,Boolean>	getFalse()
static <T,V> org.eclipse.collections.api.block.function.Function<T,V>	getFixedValue(V value)
static org.eclipse.collections.api.block.function.Function<Integer,Integer>	getIntegerPassThru()
static <K> org.eclipse.collections.api.block.function.Function<Map.Entry<K,?>,K>	getKeyFunction()
static org.eclipse.collections.api.block.function.Function<Long,Long>	getLongPassThru()
static org.eclipse.collections.api.block.function.Function<Number,Double>	getMathSinFunction()
static org.eclipse.collections.api.block.function.Function<Object,String>	getNullSafeToString(String defaultValue)
static org.eclipse.collections.api.block.function.Function<Number,Number>	getNumberPassThru()
static <T> org.eclipse.collections.api.block.function.Function<T,T>	getPassThru() Alias for identity().
static org.eclipse.collections.api.block.function.Function<Iterable<?>,Integer>	getSizeOf()
static org.eclipse.collections.api.block.function.Function<String,String>	getStringPassThru()
static org.eclipse.collections.api.block.function.Function<String,Integer>	getStringToInteger()
static org.eclipse.collections.api.block.function.Function<String,String>	getStringTrim()
static org.eclipse.collections.api.block.function.Function<Object,Class<?>>	getToClass()
static org.eclipse.collections.api.block.function.Function<Object,String>	getToString()
static org.eclipse.collections.api.block.function.Function<Object,Boolean>	getTrue()
static <V> org.eclipse.collections.api.block.function.Function<Map.Entry<?,V>,V>	getValueFunction()
static <T> org.eclipse.collections.api.block.function.Function<T,T>	identity()
static <T,V> org.eclipse.collections.api.block.function.Function<T,V>	ifElse(org.eclipse.collections.api.block.predicate.Predicate<? super T> predicate, org.eclipse.collections.api.block.function.Function<? super T,? extends V> trueFunction, org.eclipse.collections.api.block.function.Function<? super T,? extends V> falseFunction)
static <T,V> org.eclipse.collections.api.block.function.Function<T,V>	ifTrue(org.eclipse.collections.api.block.predicate.Predicate<? super T> predicate, org.eclipse.collections.api.block.function.Function<? super T,? extends V> function)
static <T,V> org.eclipse.collections.api.block.function.Function<T,V>	nullSafe(org.eclipse.collections.api.block.function.Function<? super T,? extends V> function)
static <T,V> org.eclipse.collections.api.block.function.Function<T,V>	nullSafe(org.eclipse.collections.api.block.function.Function<? super T,? extends V> function, V nullValue)
static <T,V1,V2> org.eclipse.collections.api.block.function.Function<T,org.eclipse.collections.api.tuple.Pair<V1,V2>>	pair(org.eclipse.collections.api.block.function.Function<? super T,V1> function1, org.eclipse.collections.api.block.function.Function<? super T,V2> function2)
static <V2> org.eclipse.collections.api.block.function.Function<org.eclipse.collections.api.tuple.Pair<?,V2>,V2>	secondOfPair()
static org.eclipse.collections.api.block.function.Function<Integer,Integer>	squaredInteger()
static <S,T> org.eclipse.collections.api.block.function.Function<org.eclipse.collections.api.tuple.Pair<S,T>,org.eclipse.collections.api.tuple.Pair<T,S>>	swappedPair() Swap the input pair and return the swapped pair.
static <T,V> org.eclipse.collections.api.block.function.Function<T,V>	synchronizedEach(org.eclipse.collections.api.block.function.Function<T,V> function)
static <T,V> org.eclipse.collections.api.block.function.Function<T,V>	throwing(ThrowingFunction<T,V> throwingFunction)
static <T> org.eclipse.collections.api.block.SerializableComparator<T>	toBooleanComparator(org.eclipse.collections.api.block.function.primitive.BooleanFunction<T> function)
static <T> org.eclipse.collections.api.block.SerializableComparator<T>	toByteComparator(org.eclipse.collections.api.block.function.primitive.ByteFunction<T> function)
static <T> org.eclipse.collections.api.block.SerializableComparator<T>	toCharComparator(org.eclipse.collections.api.block.function.primitive.CharFunction<T> function)
static <T> org.eclipse.collections.api.block.SerializableComparator<T>	toDoubleComparator(org.eclipse.collections.api.block.function.primitive.DoubleFunction<T> function)
static <T> org.eclipse.collections.api.block.SerializableComparator<T>	toFloatComparator(org.eclipse.collections.api.block.function.primitive.FloatFunction<T> function)
static <T> org.eclipse.collections.api.block.SerializableComparator<T>	toIntComparator(org.eclipse.collections.api.block.function.primitive.IntFunction<T> function)
static <T> org.eclipse.collections.api.block.SerializableComparator<T>	toLongComparator(org.eclipse.collections.api.block.function.primitive.LongFunction<T> function)
static <T> org.eclipse.collections.api.block.SerializableComparator<T>	toShortComparator(org.eclipse.collections.api.block.function.primitive.ShortFunction<T> function)
static <T,V> org.eclipse.collections.api.block.function.Function<T,V>	withDefault(org.eclipse.collections.api.block.function.Function<? super T,? extends V> function, V defaultValue)

Methods inherited from class java.lang.Object

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

Method Detail

throwing

public static <T,V> org.eclipse.collections.api.block.function.Function<T,V> throwing(ThrowingFunction<T,V> throwingFunction)

cast

public static <T,V> org.eclipse.collections.api.block.function.Function<T,V> cast(org.eclipse.collections.api.block.function.Function<T,V> function)

Allows a Java 8 lambda and method reference to be used in a method taking a Function as a parameter without any ambiguity.

getPassThru

public static <T> org.eclipse.collections.api.block.function.Function<T,T> getPassThru()

Alias for identity(). Inlineable.

See Also:

identity()

identity

public static <T> org.eclipse.collections.api.block.function.Function<T,T> identity()

Since:

6.0

getTrue

public static org.eclipse.collections.api.block.function.Function<Object,Boolean> getTrue()

Since:

6.0

getFalse

public static org.eclipse.collections.api.block.function.Function<Object,Boolean> getFalse()

Since:

6.0

getFixedValue

public static <T,V> org.eclipse.collections.api.block.function.Function<T,V> getFixedValue(V value)

getToClass

public static org.eclipse.collections.api.block.function.Function<Object,Class<?>> getToClass()

getMathSinFunction

public static org.eclipse.collections.api.block.function.Function<Number,Double> getMathSinFunction()

getNumberPassThru

public static org.eclipse.collections.api.block.function.Function<Number,Number> getNumberPassThru()

getIntegerPassThru

public static org.eclipse.collections.api.block.function.Function<Integer,Integer> getIntegerPassThru()

getLongPassThru

public static org.eclipse.collections.api.block.function.Function<Long,Long> getLongPassThru()

getDoublePassThru

public static org.eclipse.collections.api.block.function.Function<Double,Double> getDoublePassThru()

getStringPassThru

public static org.eclipse.collections.api.block.function.Function<String,String> getStringPassThru()

getStringTrim

public static org.eclipse.collections.api.block.function.Function<String,String> getStringTrim()

getToString

public static org.eclipse.collections.api.block.function.Function<Object,String> getToString()

getNullSafeToString

public static org.eclipse.collections.api.block.function.Function<Object,String> getNullSafeToString(String defaultValue)

toBooleanComparator

public static <T> org.eclipse.collections.api.block.SerializableComparator<T> toBooleanComparator(org.eclipse.collections.api.block.function.primitive.BooleanFunction<T> function)

toByteComparator

public static <T> org.eclipse.collections.api.block.SerializableComparator<T> toByteComparator(org.eclipse.collections.api.block.function.primitive.ByteFunction<T> function)

toCharComparator

public static <T> org.eclipse.collections.api.block.SerializableComparator<T> toCharComparator(org.eclipse.collections.api.block.function.primitive.CharFunction<T> function)

toFloatComparator

public static <T> org.eclipse.collections.api.block.SerializableComparator<T> toFloatComparator(org.eclipse.collections.api.block.function.primitive.FloatFunction<T> function)

toShortComparator

public static <T> org.eclipse.collections.api.block.SerializableComparator<T> toShortComparator(org.eclipse.collections.api.block.function.primitive.ShortFunction<T> function)

toIntComparator

public static <T> org.eclipse.collections.api.block.SerializableComparator<T> toIntComparator(org.eclipse.collections.api.block.function.primitive.IntFunction<T> function)

toDoubleComparator

public static <T> org.eclipse.collections.api.block.SerializableComparator<T> toDoubleComparator(org.eclipse.collections.api.block.function.primitive.DoubleFunction<T> function)

toLongComparator

public static <T> org.eclipse.collections.api.block.SerializableComparator<T> toLongComparator(org.eclipse.collections.api.block.function.primitive.LongFunction<T> function)

getStringToInteger

public static org.eclipse.collections.api.block.function.Function<String,Integer> getStringToInteger()

withDefault

public static <T,V> org.eclipse.collections.api.block.function.Function<T,V> withDefault(org.eclipse.collections.api.block.function.Function<? super T,? extends V> function,
                                                                                         V defaultValue)

nullSafe

public static <T,V> org.eclipse.collections.api.block.function.Function<T,V> nullSafe(org.eclipse.collections.api.block.function.Function<? super T,? extends V> function)

nullSafe

public static <T,V> org.eclipse.collections.api.block.function.Function<T,V> nullSafe(org.eclipse.collections.api.block.function.Function<? super T,? extends V> function,
                                                                                      V nullValue)

firstOfPair

public static <V1> org.eclipse.collections.api.block.function.Function<org.eclipse.collections.api.tuple.Pair<V1,?>,V1> firstOfPair()

secondOfPair

public static <V2> org.eclipse.collections.api.block.function.Function<org.eclipse.collections.api.tuple.Pair<?,V2>,V2> secondOfPair()

swappedPair

public static <S,T> org.eclipse.collections.api.block.function.Function<org.eclipse.collections.api.tuple.Pair<S,T>,org.eclipse.collections.api.tuple.Pair<T,S>> swappedPair()

Swap the input pair and return the swapped pair.

Returns:

A function that gets the swapped pair Iterable

bind

public static <T,P,R> org.eclipse.collections.api.block.function.Function<T,R> bind(org.eclipse.collections.api.block.function.Function2<? super T,? super P,? extends R> function,
                                                                                    P parameter)

Bind the parameter passed to a Function2 into a new Function.

Parameters:

function - The Function2 to delegate the invocation to.

parameter - The parameter the use in the invocation of the delegate function.

Returns:

A new Function

bind

public static <T1,T2> org.eclipse.collections.api.block.procedure.Procedure<T1> bind(org.eclipse.collections.api.block.procedure.Procedure<? super T2> delegate,
                                                                                     org.eclipse.collections.api.block.function.Function<? super T1,T2> function)

Bind the input of a Procedure to the result of an function, returning a new Procedure.

Parameters:

delegate - The Procedure to delegate the invocation to.

function - The Function that will create the input for the delegate

Returns:

A new Procedure

bind

public static <T1,T2> org.eclipse.collections.api.block.procedure.primitive.ObjectIntProcedure<T1> bind(org.eclipse.collections.api.block.procedure.primitive.ObjectIntProcedure<? super T2> delegate,
                                                                                                        org.eclipse.collections.api.block.function.Function<? super T1,T2> function)

Bind the input of a ObjectIntProcedure to the result of an function, returning a new ObjectIntProcedure.

Parameters:

delegate - The ObjectIntProcedure to delegate the invocation to.

function - The Function that will create the input for the delegate

Returns:

A new ObjectIntProcedure

bind

public static <T1,T2,T3> org.eclipse.collections.api.block.procedure.Procedure2<T1,T3> bind(org.eclipse.collections.api.block.procedure.Procedure2<? super T2,T3> delegate,
                                                                                            org.eclipse.collections.api.block.function.Function<? super T1,T2> function)

Bind the input of the first argument of a Procedure2 to the result of an function, returning a new Procedure2.

Parameters:

delegate - The Procedure2 to delegate the invocation to.

function - The Function that will create the input for the delegate

Returns:

A new Procedure2

squaredInteger

public static org.eclipse.collections.api.block.function.Function<Integer,Integer> squaredInteger()

firstNotNullValue

public static <T,V> org.eclipse.collections.api.block.function.Function<T,V> firstNotNullValue(org.eclipse.collections.api.block.function.Function<T,V>... functions)

firstNotEmptyStringValue

public static <T> org.eclipse.collections.api.block.function.Function<T,String> firstNotEmptyStringValue(org.eclipse.collections.api.block.function.Function<T,String>... functions)

firstNotEmptyCollectionValue

public static <T1,T2,I extends Iterable<T2>> org.eclipse.collections.api.block.function.Function<T1,I> firstNotEmptyCollectionValue(org.eclipse.collections.api.block.function.Function<T1,I>... functions)

ifTrue

public static <T,V> org.eclipse.collections.api.block.function.Function<T,V> ifTrue(org.eclipse.collections.api.block.predicate.Predicate<? super T> predicate,
                                                                                    org.eclipse.collections.api.block.function.Function<? super T,? extends V> function)

ifElse

public static <T,V> org.eclipse.collections.api.block.function.Function<T,V> ifElse(org.eclipse.collections.api.block.predicate.Predicate<? super T> predicate,
                                                                                    org.eclipse.collections.api.block.function.Function<? super T,? extends V> trueFunction,
                                                                                    org.eclipse.collections.api.block.function.Function<? super T,? extends V> falseFunction)

caseDefault

public static <T extends Comparable<? super T>,V> CaseFunction<T,V> caseDefault(org.eclipse.collections.api.block.function.Function<? super T,? extends V> defaultFunction)

caseDefault

public static <T extends Comparable<? super T>,V> CaseFunction<T,V> caseDefault(org.eclipse.collections.api.block.function.Function<? super T,? extends V> defaultFunction,
                                                                                org.eclipse.collections.api.block.predicate.Predicate<? super T> predicate,
                                                                                org.eclipse.collections.api.block.function.Function<? super T,? extends V> function)

synchronizedEach

public static <T,V> org.eclipse.collections.api.block.function.Function<T,V> synchronizedEach(org.eclipse.collections.api.block.function.Function<T,V> function)

classForName

public static org.eclipse.collections.api.block.function.Function<String,Class<?>> classForName()

chain

public static <T1,T2,T3> Functions.FunctionChain<T1,T2,T3> chain(org.eclipse.collections.api.block.function.Function<T1,T2> function1,
                                                                 org.eclipse.collections.api.block.function.Function<? super T2,T3> function2)

chainBoolean

public static <T1,T2> Functions.BooleanFunctionChain<T1,T2> chainBoolean(org.eclipse.collections.api.block.function.Function<T1,T2> function1,
                                                                         org.eclipse.collections.api.block.function.primitive.BooleanFunction<? super T2> function2)

chainByte

public static <T1,T2> Functions.ByteFunctionChain<T1,T2> chainByte(org.eclipse.collections.api.block.function.Function<T1,T2> function1,
                                                                   org.eclipse.collections.api.block.function.primitive.ByteFunction<? super T2> function2)

chainChar

public static <T1,T2> Functions.CharFunctionChain<T1,T2> chainChar(org.eclipse.collections.api.block.function.Function<T1,T2> function1,
                                                                   org.eclipse.collections.api.block.function.primitive.CharFunction<? super T2> function2)

chainDouble

public static <T1,T2> Functions.DoubleFunctionChain<T1,T2> chainDouble(org.eclipse.collections.api.block.function.Function<T1,T2> function1,
                                                                       org.eclipse.collections.api.block.function.primitive.DoubleFunction<? super T2> function2)

chainFloat

public static <T1,T2> Functions.FloatFunctionChain<T1,T2> chainFloat(org.eclipse.collections.api.block.function.Function<T1,T2> function1,
                                                                     org.eclipse.collections.api.block.function.primitive.FloatFunction<? super T2> function2)

chainInt

public static <T1,T2> Functions.IntFunctionChain<T1,T2> chainInt(org.eclipse.collections.api.block.function.Function<T1,T2> function1,
                                                                 org.eclipse.collections.api.block.function.primitive.IntFunction<? super T2> function2)

chainLong

public static <T1,T2> Functions.LongFunctionChain<T1,T2> chainLong(org.eclipse.collections.api.block.function.Function<T1,T2> function1,
                                                                   org.eclipse.collections.api.block.function.primitive.LongFunction<? super T2> function2)

chainShort

public static <T1,T2> Functions.ShortFunctionChain<T1,T2> chainShort(org.eclipse.collections.api.block.function.Function<T1,T2> function1,
                                                                     org.eclipse.collections.api.block.function.primitive.ShortFunction<? super T2> function2)

pair

public static <T,V1,V2> org.eclipse.collections.api.block.function.Function<T,org.eclipse.collections.api.tuple.Pair<V1,V2>> pair(org.eclipse.collections.api.block.function.Function<? super T,V1> function1,
                                                                                                                                  org.eclipse.collections.api.block.function.Function<? super T,V2> function2)

getKeyFunction

public static <K> org.eclipse.collections.api.block.function.Function<Map.Entry<K,?>,K> getKeyFunction()

Returns:

A function that gets the key out of a Map.Entry

getValueFunction

public static <V> org.eclipse.collections.api.block.function.Function<Map.Entry<?,V>,V> getValueFunction()

Returns:

A function that gets the value out of a Map.Entry

getSizeOf

public static org.eclipse.collections.api.block.function.Function<Iterable<?>,Integer> getSizeOf()

Returns:

A function that gets the size of an Iterable