Examples with AnnotationMetadataCreator org.infinispan.protostream.AnnotationMetadataCreator used on opensource projects

Example 1 with AnnotationMetadataCreator

use of org.infinispan.protostream.AnnotationMetadataCreator in project protostream by infinispan.

the class AnnotatedDescriptorImpl method processAnnotations.

/**
 * Extract annotations by parsing the documentation comment and run the configured {@link
 * AnnotationMetadataCreator}s.
 *
 * @throws AnnotationParserException if annotation parsing fails
 */
private void processAnnotations() throws AnnotationParserException {
    // we are lazily processing the annotations, if there is a documentation text attached to this element
    if (annotations == null) {
        if (documentation != null) {
            AnnotationParser parser = new AnnotationParser(documentation, true);
            List<AnnotationElement.Annotation> parsedAnnotations = parser.parse();
            Map<String, AnnotationElement.Annotation> _annotations = new LinkedHashMap<>();
            Map<String, AnnotationElement.Annotation> _containers = new LinkedHashMap<>();
            for (AnnotationElement.Annotation annotation : parsedAnnotations) {
                AnnotationConfiguration annotationConfig = getAnnotationConfig(annotation);
                if (annotationConfig == null) {
                    // unknown annotations are ignored, but we might want to log a warning
                    if (getAnnotationsConfig().logUndefinedAnnotations()) {
                        log.warnf("Encountered and ignored and unknown annotation \"%s\" on %s", annotation.getName(), fullName);
                    }
                } else {
                    validateAttributes(annotation, annotationConfig);
                    // convert single values to arrays if needed and set the default values for missing attributes
                    normalizeValues(annotation, annotationConfig);
                    if (_annotations.containsKey(annotation.getName()) || _containers.containsKey(annotation.getName())) {
                        // did we just find a repeatable annotation?
                        if (annotationConfig.repeatable() != null) {
                            AnnotationElement.Annotation container = _containers.get(annotation.getName());
                            if (container == null) {
                                List<AnnotationElement.Value> values = new LinkedList<>();
                                values.add(_annotations.remove(annotation.getName()));
                                values.add(annotation);
                                AnnotationElement.Attribute value = new AnnotationElement.Attribute(annotation.position, AnnotationElement.Annotation.VALUE_DEFAULT_ATTRIBUTE, new AnnotationElement.Array(annotation.position, values));
                                container = new AnnotationElement.Annotation(annotation.position, annotationConfig.repeatable(), Collections.singletonMap(value.getName(), value));
                                _containers.put(annotation.getName(), container);
                                _annotations.put(container.getName(), container);
                            } else {
                                AnnotationElement.Array value = (AnnotationElement.Array) container.getAttributeValue(AnnotationElement.Annotation.VALUE_DEFAULT_ATTRIBUTE);
                                value.getValues().add(annotation);
                            }
                        } else {
                            // it's just a duplicate, not a proper 'repeated' annotation
                            throw new AnnotationParserException(String.format("Error: %s: duplicate annotation definition \"%s\" on %s", AnnotationElement.positionToString(annotation.position), annotation.getName(), fullName));
                        }
                    } else {
                        _annotations.put(annotation.getName(), annotation);
                    }
                }
            }
            // annotations are now completely parsed and validated
            annotations = _annotations.isEmpty() ? Collections.emptyMap() : Collections.unmodifiableMap(_annotations);
            // create metadata based on the annotations
            processedAnnotations = new LinkedHashMap<>();
            for (AnnotationElement.Annotation annotation : annotations.values()) {
                AnnotationConfiguration annotationConfig = getAnnotationConfig(annotation);
                AnnotationMetadataCreator<Object, AnnotatedDescriptor> creator = (AnnotationMetadataCreator<Object, AnnotatedDescriptor>) annotationConfig.metadataCreator();
                if (creator != null) {
                    Object metadataForAnnotation;
                    try {
                        metadataForAnnotation = creator.create(this, annotation);
                    } catch (Exception ex) {
                        log.errorf(ex, "Exception encountered while processing annotation \"%s\" on %s", annotation.getName(), fullName);
                        throw ex;
                    }
                    processedAnnotations.put(annotation.getName(), metadataForAnnotation);
                }
            }
        } else {
            annotations = Collections.emptyMap();
            processedAnnotations = Collections.emptyMap();
        }
    }
}