TypeCoercions (Brooklyn)

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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`

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`	`getMatchingConstructor(java.lang.Class target, java.lang.Object... arguments)` for automatic conversion
`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

Method Detail

castPrimitive

@SuppressWarnings("unchecked")
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) })

getMatchingConstructor

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

for automatic conversion

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

@SuppressWarnings("unchecked")
public static boolean isPrimitiveOrBoxer(java.lang.Class type)

registerAdapter

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

stringToPrimitive

@SuppressWarnings("unchecked")
public static java.lang.Object stringToPrimitive(java.lang.String value, java.lang.Class targetType)

brooklyn.util.flags [Java] Class TypeCoercions