[LANG-1021] Provide methods to retrieve all fields/methods annotated with a specific type

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.4
• Component/s: lang.reflect.*
• Assignee: Benedikt Ritter
• Reporter: Alexander Müller
• Created: 30/Jun/14 09:37
• Updated: 06/Apr/15 17:28
• Resolved: 20/Jul/14 09:15

Description

I find myself repeatedly searching for fields (or methods) that are annotated with a specified annotation like this (field-only example):

List<Field> fieldsWithAnnotation = new ArrayList<>(); 
Field[] fields = FieldUtils.getAllFields(type);
for (Field field : fields) {
    Annotation fieldAnnotation = field.getAnnotation(annotation);
    if (fieldAnnotation != null) {
        fieldsWithAnnotation.add(fieldAnnotation);
    }
}

Commons Lang could provide these methods:

public Field[] AnnotationUtils.getFieldsWithAnnotation(Annotation annotation);
public List<Field> AnnotationUtils.getFieldListWithAnnotation(Annotation annotation);
public Method[] AnnotationUtils.getMethodsWithAnnotation(Annotation annotation);
public List<Method> AnnotationUtils.getMethodListWithAnnotation(Annotation annotation);