/*
* Hibernate Validator, declare and validate application constraints
*
* License: Apache License, Version 2.0
* See the license.txt file in the root directory or <http://www.apache.org/licenses/LICENSE-2.0>.
*/
package org.hibernate.validator.internal.util.privilegedactions;
import java.lang.annotation.Annotation;
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 GetAnnotationParameter<T> implements PrivilegedAction<T> {
private static final Log log = LoggerFactory.make();
private final Annotation annotation;
private final String parameterName;
private final Class<T> type;
public static <T> GetAnnotationParameter<T> action(Annotation annotation, String parameterName, Class<T> type) {
return new GetAnnotationParameter<T>( annotation, parameterName, type );
}
private GetAnnotationParameter(Annotation annotation, String parameterName, Class<T> type) {
this.annotation = annotation;
this.parameterName = parameterName;
this.type = type;
}
@Override
public T run() {
try {
Method m = annotation.getClass().getMethod( parameterName );
m.setAccessible( true );
Object o = m.invoke( annotation );
if ( type.isAssignableFrom( o.getClass() ) ) {
return (T) o;
}
else {
throw log.getWrongParameterTypeException( type, o.getClass() );
}
}
catch (NoSuchMethodException e) {
throw log.getUnableToFindAnnotationParameterException( parameterName, e );
}
catch (IllegalAccessException | InvocationTargetException e) {
throw log.getUnableToGetAnnotationParameterException( parameterName, annotation.getClass(), e );
}
}
}