Package org.faktorips.devtools.abstraction

Class Wrappers

java.lang.Object

org.faktorips.devtools.abstraction.Wrappers

public class Wrappers
extends java.lang.Object

Utility class to wrap, unwrap and implement wrappers.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Wrappers.ArrayUnwrapper<A extends AAbstraction>
static class	Wrappers.CollectionUnwrapper
static interface	Wrappers.CoreExceptionThrowingRunnable	A Runnable that may throw a CoreException.
static interface	Wrappers.CoreExceptionThrowingSupplier<T>	A Supplier that may throw a CoreException.
static class	Wrappers.WrapperBuilder

Method Summary

Modifier and Type	Method	Description
static <T> T	get(Wrappers.CoreExceptionThrowingSupplier<T> supplier)	Calls the given supplier and returns the result.
static void	run(Wrappers.CoreExceptionThrowingRunnable runnable)	Runs the given runnable.
static <A extends AAbstraction> Wrappers.ArrayUnwrapper<A>	unwrap(A[] wrappers)	Returns a Wrappers.ArrayUnwrapper that allows unwrapping the given array of wrappers to an array or list of the wrapped class.
static Wrappers.CollectionUnwrapper	unwrap(java.util.Collection<? extends AAbstraction> wrappers)	Returns a Wrappers.CollectionUnwrapper that allows unwrapping the given collection of wrappers to an array of the wrapped class.
static <T> T	unwrap(AAbstraction wrapper)	Unwraps the given abstraction to the call-site's type
static Wrappers.WrapperBuilder	wrap(java.lang.Object original)	Returns a Wrappers.WrapperBuilder for the given object that allows it to be wrapped in an implementation-specific wrapper.
static <T> Wrappers.WrapperBuilder	wrapSupplier(Wrappers.CoreExceptionThrowingSupplier<T> supplier)	Returns a Wrappers.WrapperBuilder for the object produced by the given supplier that allows that object to be wrapped in an implementation-specific wrapper.

Methods inherited from class java.lang.Object

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

Method Detail

wrap

public static Wrappers.WrapperBuilder wrap(java.lang.Object original)

Returns a Wrappers.WrapperBuilder for the given object that allows it to be wrapped in an implementation-specific wrapper.

wrapSupplier

public static <T> Wrappers.WrapperBuilder wrapSupplier(Wrappers.CoreExceptionThrowingSupplier<T> supplier)

Returns a Wrappers.WrapperBuilder for the object produced by the given supplier that allows that object to be wrapped in an implementation-specific wrapper.

Any CoreException thrown by the supplier is rethrown as a IpsException.

run

public static void run(Wrappers.CoreExceptionThrowingRunnable runnable)

Runs the given runnable.

Any CoreException thrown by the runnable is rethrown as a IpsException.

get

public static <T> T get(Wrappers.CoreExceptionThrowingSupplier<T> supplier)

Calls the given supplier and returns the result.

Any CoreException thrown by the supplier is rethrown as a IpsException.

unwrap

@CheckForNull
public static <T> T unwrap(@CheckForNull
                           AAbstraction wrapper)

Unwraps the given abstraction to the call-site's type

Type Parameters:

T - the expected unwrapped type

Parameters:

wrapper - a wrapper wrapping the expected type

Returns:

the unwrapped T object or null if the given wrapper is null

Throws:

java.lang.ClassCastException - if called with a wrapper not wrapping the expected type

unwrap

public static <A extends AAbstraction> Wrappers.ArrayUnwrapper<A> unwrap(A[] wrappers)

Returns a Wrappers.ArrayUnwrapper that allows unwrapping the given array of wrappers to an array or list of the wrapped class.

unwrap

public static Wrappers.CollectionUnwrapper unwrap(java.util.Collection<? extends AAbstraction> wrappers)

Returns a Wrappers.CollectionUnwrapper that allows unwrapping the given collection of wrappers to an array of the wrapped class.