Example usage for org.springframework.core.type.filter AnnotationTypeFilter getAnnotationType

Introduction

In this page you can find the example usage for org.springframework.core.type.filter AnnotationTypeFilter getAnnotationType.

Prototype

public final Class<? extends Annotation> getAnnotationType() 

Source Link

Document

Return the Annotation that this instance is using to filter candidates.

Usage

From source file:org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager.java

private void scanPackage(SpringPersistenceUnitInfo scannedUnit, String pkg) {
    if (this.componentsIndex != null) {
        Set<String> candidates = new HashSet<>();
        for (AnnotationTypeFilter filter : entityTypeFilters) {
            candidates/*from  w w w.  ja  v  a2 s.com*/
                    .addAll(this.componentsIndex.getCandidateTypes(pkg, filter.getAnnotationType().getName()));
        }
        candidates.forEach(scannedUnit::addManagedClassName);
        Set<String> managedPackages = this.componentsIndex.getCandidateTypes(pkg, "package-info");
        managedPackages.forEach(scannedUnit::addManagedPackage);
        return;
    }

    try {
        String pattern = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX
                + ClassUtils.convertClassNameToResourcePath(pkg) + CLASS_RESOURCE_PATTERN;
        Resource[] resources = this.resourcePatternResolver.getResources(pattern);
        MetadataReaderFactory readerFactory = new CachingMetadataReaderFactory(this.resourcePatternResolver);
        for (Resource resource : resources) {
            if (resource.isReadable()) {
                MetadataReader reader = readerFactory.getMetadataReader(resource);
                String className = reader.getClassMetadata().getClassName();
                if (matchesFilter(reader, readerFactory)) {
                    scannedUnit.addManagedClassName(className);
                    if (scannedUnit.getPersistenceUnitRootUrl() == null) {
                        URL url = resource.getURL();
                        if (ResourceUtils.isJarURL(url)) {
                            scannedUnit.setPersistenceUnitRootUrl(ResourceUtils.extractJarFileURL(url));
                        }
                    }
                } else if (className.endsWith(PACKAGE_INFO_SUFFIX)) {
                    scannedUnit.addManagedPackage(
                            className.substring(0, className.length() - PACKAGE_INFO_SUFFIX.length()));
                }
            }
        }
    } catch (IOException ex) {
        throw new PersistenceException("Failed to scan classpath for unlisted entity classes", ex);
    }
}

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