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| 1 | +package io.micronaut.configuration.hibernate.validator; |
| 2 | + |
| 3 | +import io.micronaut.context.annotation.Replaces; |
| 4 | +import jakarta.inject.Singleton; |
| 5 | +import jakarta.validation.ParameterNameProvider; |
| 6 | +import java.lang.reflect.Constructor; |
| 7 | +import java.lang.reflect.Executable; |
| 8 | +import java.lang.reflect.Method; |
| 9 | +import java.util.ArrayList; |
| 10 | +import java.util.List; |
| 11 | + |
| 12 | +@Singleton |
| 13 | +@Replaces(DefaultParameterNameProvider.class) |
| 14 | +public class OverrideParameterNameProvider implements ParameterNameProvider { |
| 15 | + |
| 16 | + private final DefaultParameterNameProvider delegate; |
| 17 | + |
| 18 | + public OverrideParameterNameProvider(DefaultParameterNameProvider delegate) { |
| 19 | + this.delegate = delegate; |
| 20 | + } |
| 21 | + |
| 22 | + @Override |
| 23 | + public List<String> getParameterNames(Constructor<?> constructor) { |
| 24 | + return normalize(constructor, delegate.getParameterNames(constructor)); |
| 25 | + } |
| 26 | + |
| 27 | + @Override |
| 28 | + public List<String> getParameterNames(Method method) { |
| 29 | + return normalize(method, delegate.getParameterNames(method)); |
| 30 | + } |
| 31 | + |
| 32 | + private List<String> normalize(Executable exec, List<String> names) { |
| 33 | + int paramCount = exec.getParameterCount(); |
| 34 | + |
| 35 | + if (names.size() == paramCount) { |
| 36 | + return names; |
| 37 | + } |
| 38 | + |
| 39 | + // Trim extra names (Micronaut internal params leak) |
| 40 | + if (names.size() > paramCount) { |
| 41 | + return new ArrayList<>(names.subList(0, paramCount)); |
| 42 | + } |
| 43 | + |
| 44 | + // Pad missing names to avoid Hibernate Validator crash |
| 45 | + List<String> normalized = new ArrayList<>(paramCount); |
| 46 | + normalized.addAll(names); |
| 47 | + |
| 48 | + for (int i = names.size(); i < paramCount; i++) { |
| 49 | + normalized.add("arg" + i); |
| 50 | + } |
| 51 | + |
| 52 | + return normalized; |
| 53 | + } |
| 54 | +} |
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