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brooklyn.util.flags
[Java] Class TypeCoercions

java.lang.Object
  brooklyn.util.flags.TypeCoercions

public class TypeCoercions
Field Summary
static java.util.Map BOXED_TO_UNBOXED_TYPES

static java.util.Map UNBOXED_TO_BOXED_TYPES

for automatic conversion
 
Method Summary
static java.lang.Object castPrimitive(java.lang.Object value, java.lang.Class targetType)

Sometimes need to explicitly cast primitives, rather than relying on Java casting.

static java.lang.Object coerce(java.lang.Object value, java.lang.Class targetType)

attempts to coerce 'value' to 'targetType', using a variety of strategies, including looking at:
static java.lang.Object coerce(java.lang.Object value, TypeToken targetTypeToken)

see coerce(Object, Class)
static java.lang.Object getMatchingConstructor(java.lang.Class target, java.lang.Object... arguments)

static java.lang.String getVerySimpleName(java.lang.Class c)

returns the simple class name, and for any inner class the portion after the $
static boolean isPrimitiveOrBoxer(java.lang.Class type)

static void registerAdapter(java.lang.Class sourceType, java.lang.Class targetType, Function fn)

static java.lang.Object stringToPrimitive(java.lang.String value, java.lang.Class targetType)

 
Methods inherited from class java.lang.Object
java.lang.Object#wait(), java.lang.Object#wait(long), java.lang.Object#wait(long, int), java.lang.Object#equals(java.lang.Object), java.lang.Object#toString(), java.lang.Object#hashCode(), java.lang.Object#getClass(), java.lang.Object#notify(), java.lang.Object#notifyAll()
 

Field Detail

BOXED_TO_UNBOXED_TYPES

public static final java.util.Map BOXED_TO_UNBOXED_TYPES

UNBOXED_TO_BOXED_TYPES

public static final java.util.Map UNBOXED_TO_BOXED_TYPES
for automatic conversion

 
Method Detail

castPrimitive

// boolean can only be cast to itself
public static java.lang.Object castPrimitive(java.lang.Object value, java.lang.Class targetType)
Sometimes need to explicitly cast primitives, rather than relying on Java casting. For example, when using generics then type-erasure means it doesn't actually cast, which causes tests to fail with 0 != 0.0

coerce

public static java.lang.Object coerce(java.lang.Object value, java.lang.Class targetType)
attempts to coerce 'value' to 'targetType', using a variety of strategies, including looking at: value.asTargetType() static TargetType.fromType(value) where value instanceof Type value.targetTypeValue() //handy for primitives registeredAdapters.get(targetType).findFirst({ k,v -> k.isInstance(value) }, { k,v -> v.apply(value) })

coerce

@SuppressWarnings({ "unchecked", "rawtypes" })
public static java.lang.Object coerce(java.lang.Object value, TypeToken targetTypeToken)
see coerce(Object, Class)

getMatchingConstructor

public static java.lang.Object getMatchingConstructor(java.lang.Class target, java.lang.Object... arguments)

getVerySimpleName

public static java.lang.String getVerySimpleName(java.lang.Class c)
returns the simple class name, and for any inner class the portion after the $

isPrimitiveOrBoxer

// Otherwise can use valueOf reflectively
public static boolean isPrimitiveOrBoxer(java.lang.Class type)

registerAdapter

public static void registerAdapter(java.lang.Class sourceType, java.lang.Class targetType, Function fn)

stringToPrimitive

wrappedType = targetType;
public static java.lang.Object stringToPrimitive(java.lang.String value, java.lang.Class targetType)

 

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