aQute.lib.exceptions.SupplierWithException Maven / Gradle / Ivy
package aQute.lib.exceptions;
import static java.util.Objects.requireNonNull;
import java.util.function.Supplier;
/**
* Supplier interface that allows exceptions.
*
* @param the result type
*/
@FunctionalInterface
public interface SupplierWithException {
R get() throws Exception;
default Supplier orElseThrow() {
return () -> {
try {
return get();
} catch (Exception e) {
throw Exceptions.duck(e);
}
};
}
default Supplier orElse(R orElse) {
return () -> {
try {
return get();
} catch (Exception e) {
return orElse;
}
};
}
default Supplier orElseGet(Supplier orElseGet) {
requireNonNull(orElseGet);
return () -> {
try {
return get();
} catch (Exception e) {
return orElseGet.get();
}
};
}
static Supplier asSupplier(SupplierWithException unchecked) {
return unchecked.orElseThrow();
}
static Supplier asSupplierOrElse(SupplierWithException unchecked, R orElse) {
return unchecked.orElse(orElse);
}
static Supplier asSupplierOrElseGet(SupplierWithException unchecked, Supplier orElseGet) {
return unchecked.orElseGet(orElseGet);
}
}