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HHH-6202 Adding new helper method for getting a single annotation instance from a map

This commit is contained in:
Hardy Ferentschik 2011-05-16 17:45:49 +02:00
parent ac0cf3afd8
commit 5d766b237b
1 changed files with 29 additions and 2 deletions
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31
hibernate-core/src/main/java/org/hibernate/metamodel/source/annotations/util/JandexHelper.java
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@ -93,11 +93,24 @@ public class JandexHelper {
*
* @return the single annotation defined on the class or {@code null} in case the annotation is not specified at all
*
* @throws org.hibernate.AssertionFailure in case there is
* @throws org.hibernate.AssertionFailure in case there is there is more than one annotation of this type.
*/
public static AnnotationInstance getSingleAnnotation(ClassInfo classInfo, DotName annotationName)
throws AssertionFailure {
List<AnnotationInstance> annotationList = classInfo.annotations().get( annotationName );
return getSingleAnnotation( classInfo.annotations(), annotationName );
}
/**
* @param annotations List of annotation instances keyed against their dot name.
* @param annotationName the annotation to retrieve from map
*
* @return the single annotation of the specified dot name or {@code null} in case the annotation is not specified at all
*
* @throws org.hibernate.AssertionFailure in case there is there is more than one annotation of this type.
*/
public static AnnotationInstance getSingleAnnotation(Map<DotName, List<AnnotationInstance>> annotations, DotName annotationName)
throws AssertionFailure {
List<AnnotationInstance> annotationList = annotations.get( annotationName );
if ( annotationList == null ) {
return null;
}
@ -113,6 +126,20 @@ public class JandexHelper {
}
}
/**
* @param annotations List of annotation instances keyed against their dot name.
* @param annotationNames the annotation names to filter
*
* @return a new map of annotation instances only containing annotations of the specified dot names.
*/
public static Map<DotName, List<AnnotationInstance>> filterAnnotations(Map<DotName, List<AnnotationInstance>> annotations, DotName... annotationNames) {
Map<DotName, List<AnnotationInstance>> filteredAnnotations = new HashMap<DotName, List<AnnotationInstance>>();
for ( DotName name : annotationNames ) {
filteredAnnotations.put( name, annotations.get( name ) );
}
return filteredAnnotations;
}
/**
* Creates a jandex index for the specified classes
*