org.hibernate.validator.internal.util.privilegedactions.GetAnnotationAttribute Maven / Gradle / Ivy
/*
* Hibernate Validator, declare and validate application constraints
*
* License: Apache License, Version 2.0
* See the license.txt file in the root directory or .
*/
package org.hibernate.validator.internal.util.privilegedactions;
import java.lang.annotation.Annotation;
import java.lang.invoke.MethodHandles;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.security.PrivilegedAction;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;
/**
* @author Emmanuel Bernard
* @author Hardy Ferentschik
*/
public final class GetAnnotationAttribute implements PrivilegedAction {
private static final Log LOG = LoggerFactory.make( MethodHandles.lookup() );
private final Annotation annotation;
private final String attributeName;
private final Class type;
public static GetAnnotationAttribute action(Annotation annotation, String attributeName, Class type) {
return new GetAnnotationAttribute( annotation, attributeName, type );
}
private GetAnnotationAttribute(Annotation annotation, String attributeName, Class type) {
this.annotation = annotation;
this.attributeName = attributeName;
this.type = type;
}
@Override
@SuppressWarnings("unchecked")
public T run() {
try {
Method m = annotation.getClass().getMethod( attributeName );
m.setAccessible( true );
Object o = m.invoke( annotation );
if ( type.isAssignableFrom( o.getClass() ) ) {
return (T) o;
}
else {
throw LOG.getWrongAnnotationAttributeTypeException( annotation.annotationType(), attributeName, type, o.getClass() );
}
}
catch (NoSuchMethodException e) {
throw LOG.getUnableToFindAnnotationAttributeException( annotation.annotationType(), attributeName, e );
}
catch (IllegalAccessException | InvocationTargetException e) {
throw LOG.getUnableToGetAnnotationAttributeException( annotation.annotationType(), attributeName, e );
}
}
}