Package org.codehaus.groovy.vmplugin.v8
Class PluginDefaultGroovyMethods
- java.lang.Object
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- org.codehaus.groovy.vmplugin.v8.PluginDefaultGroovyMethods
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public class PluginDefaultGroovyMethods extends java.lang.Object
Defines new Groovy methods which appear on normal JDK 8 classes inside the Groovy environment.- Since:
- 2.5.0
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static boolean
asBoolean(java.util.Optional<?> optional)
Coerce an Optional instance to a boolean value.static <S,T>
java.util.concurrent.Future<T>collect(java.util.concurrent.Future<S> self, Closure<T> transform)
Returns a Future asynchronously returning a transformed result.static <S,T>
java.util.Optional<T>collect(java.util.Optional<S> self, Closure<T> transform)
If the optional contains a value, returns an optional containing the transformed value obtained using thetransform
closure or otherwise an empty optional.static java.util.stream.Stream<java.lang.Boolean>
stream(boolean[] self)
Returns a sequentialStream
with the specified array as its source.static java.util.stream.Stream<java.lang.Byte>
stream(byte[] self)
Returns a sequentialStream
with the specified array as its source.static java.util.stream.Stream<java.lang.Character>
stream(char[] self)
Returns a sequentialStream
with the specified array as its source.static java.util.stream.Stream<java.lang.Double>
stream(double[] self)
Returns a sequentialStream
with the specified array as its source.static java.util.stream.Stream<java.lang.Float>
stream(float[] self)
Returns a sequentialStream
with the specified array as its source.static java.util.stream.Stream<java.lang.Integer>
stream(int[] self)
Returns a sequentialStream
with the specified array as its source.static java.util.stream.Stream<java.lang.Long>
stream(long[] self)
Returns a sequentialStream
with the specified array as its source.static java.util.stream.Stream<java.lang.Short>
stream(short[] self)
Returns a sequentialStream
with the specified array as its source.static <T> java.util.stream.Stream<T>
stream(T[] self)
Returns a sequentialStream
with the specified array as its source.static <T> java.util.List<T>
toList(java.util.stream.BaseStream<T,? extends java.util.stream.BaseStream> stream)
Accumulates the elements of stream into a new List.static <T> java.util.List<T>
toList(java.util.stream.Stream<T> stream)
Accumulates the elements of stream into a new List.static <T> java.util.Set<T>
toSet(java.util.stream.BaseStream<T,? extends java.util.stream.BaseStream> stream)
Accumulates the elements of stream into a new Set.static <T> java.util.Set<T>
toSet(java.util.stream.Stream<T> stream)
Accumulates the elements of stream into a new Set.
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Method Detail
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asBoolean
public static boolean asBoolean(java.util.Optional<?> optional)
Coerce an Optional instance to a boolean value.- Parameters:
optional
- the Optional- Returns:
true
if a value is present, otherwisefalse
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collect
public static <S,T> java.util.Optional<T> collect(java.util.Optional<S> self, Closure<T> transform)
If the optional contains a value, returns an optional containing the transformed value obtained using thetransform
closure or otherwise an empty optional.assert Optional.of("foobar").collect{ it.size() }.get() == 6 assert !Optional.empty().collect{ it.size() }.isPresent()
- Parameters:
self
- an Optionaltransform
- the closure used to transform the optional value if present- Returns:
- an Optional containing the transformed value or empty if the optional is empty or the transform returns null
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collect
public static <S,T> java.util.concurrent.Future<T> collect(java.util.concurrent.Future<S> self, Closure<T> transform)
Returns a Future asynchronously returning a transformed result.import java.util.concurrent.* def executor = Executors.newSingleThreadExecutor() Future
foobar = executor.submit{ "foobar" } Future foobarSize = foobar.collect{ it.size() } assert foobarSize.get() == 6 executor.shutdown() - Parameters:
self
- a Futuretransform
- the closure used to transform the Future value- Returns:
- a Future allowing the transformed value to be obtained asynchronously
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toList
public static <T> java.util.List<T> toList(java.util.stream.Stream<T> stream)
Accumulates the elements of stream into a new List.- Type Parameters:
T
- the type of element- Parameters:
stream
- the Stream- Returns:
- a new
java.util.List
instance
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toSet
public static <T> java.util.Set<T> toSet(java.util.stream.Stream<T> stream)
Accumulates the elements of stream into a new Set.- Type Parameters:
T
- the type of element- Parameters:
stream
- the Stream- Returns:
- a new
java.util.Set
instance
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toList
public static <T> java.util.List<T> toList(java.util.stream.BaseStream<T,? extends java.util.stream.BaseStream> stream)
Accumulates the elements of stream into a new List.- Type Parameters:
T
- the type of element- Parameters:
stream
- thejava.util.stream.BaseStream
- Returns:
- a new
java.util.List
instance
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toSet
public static <T> java.util.Set<T> toSet(java.util.stream.BaseStream<T,? extends java.util.stream.BaseStream> stream)
Accumulates the elements of stream into a new Set.- Type Parameters:
T
- the type of element- Parameters:
stream
- thejava.util.stream.BaseStream
- Returns:
- a new
java.util.Set
instance
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stream
public static <T> java.util.stream.Stream<T> stream(T[] self)
Returns a sequentialStream
with the specified array as its source.- Type Parameters:
T
- The type of the array elements- Parameters:
self
- The array, assumed to be unmodified during use- Returns:
- a
Stream
for the array
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stream
public static java.util.stream.Stream<java.lang.Integer> stream(int[] self)
Returns a sequentialStream
with the specified array as its source.- Parameters:
self
- The array, assumed to be unmodified during use- Returns:
- a
Stream
for the array
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stream
public static java.util.stream.Stream<java.lang.Long> stream(long[] self)
Returns a sequentialStream
with the specified array as its source.- Parameters:
self
- The array, assumed to be unmodified during use- Returns:
- a
Stream
for the array
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stream
public static java.util.stream.Stream<java.lang.Double> stream(double[] self)
Returns a sequentialStream
with the specified array as its source.- Parameters:
self
- The array, assumed to be unmodified during use- Returns:
- a
Stream
for the array
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stream
public static java.util.stream.Stream<java.lang.Character> stream(char[] self)
Returns a sequentialStream
with the specified array as its source.- Parameters:
self
- The array, assumed to be unmodified during use- Returns:
- a
Stream
for the array
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stream
public static java.util.stream.Stream<java.lang.Byte> stream(byte[] self)
Returns a sequentialStream
with the specified array as its source.- Parameters:
self
- The array, assumed to be unmodified during use- Returns:
- a
Stream
for the array
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stream
public static java.util.stream.Stream<java.lang.Short> stream(short[] self)
Returns a sequentialStream
with the specified array as its source.- Parameters:
self
- The array, assumed to be unmodified during use- Returns:
- a
Stream
for the array
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stream
public static java.util.stream.Stream<java.lang.Boolean> stream(boolean[] self)
Returns a sequentialStream
with the specified array as its source.- Parameters:
self
- The array, assumed to be unmodified during use- Returns:
- a
Stream
for the array
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stream
public static java.util.stream.Stream<java.lang.Float> stream(float[] self)
Returns a sequentialStream
with the specified array as its source.- Parameters:
self
- The array, assumed to be unmodified during use- Returns:
- a
Stream
for the array
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