blob: 556e99f070f057cc2cf6fede60e92f9502536c51 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
/*
* SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.store.adapter;
import java.util.Collection;
import java.util.Optional;
public class AdapterUtils {
private AdapterUtils() {
throw new IllegalStateException("This is a static utility class and should not be instantiated directly");
}
public static <T, U extends T> Optional<U> tryGetAdapter(Collection<T> adapters, Class<? extends U> type) {
var iterator = adapters.stream().filter(type::isInstance).iterator();
if (!iterator.hasNext()) {
return Optional.empty();
}
var adapter = type.cast(iterator.next());
if (iterator.hasNext()) {
throw new IllegalArgumentException("Ambiguous adapter: both %s and %s match %s"
.formatted(adapter.getClass().getName(), iterator.next().getClass().getName(), type.getName()));
}
return Optional.of(adapter);
}
public static <T> T getAdapter(Collection<? super T> adapters, Class<T> type) {
return tryGetAdapter(adapters, type).orElseThrow(() -> new IllegalArgumentException(
"No %s adapter was configured".formatted(type.getName())));
}
}
|