use of org.springframework.roo.metadata.MetadataProvider in project spring-roo by spring-projects.
the class MemberDetailsScannerImpl method getMemberDetails.
public final MemberDetails getMemberDetails(final String requestingClass, ClassOrInterfaceTypeDetails cid) {
if (metadataService == null) {
metadataService = getMetadataService();
}
if (providers.isEmpty()) {
bindProviders();
}
if (decorators.isEmpty()) {
bindDecorators();
}
if (cid == null) {
return null;
}
synchronized (lock) {
// Create a list of discovered members
final List<MemberHoldingTypeDetails> memberHoldingTypeDetails = new ArrayList<MemberHoldingTypeDetails>();
// Build a List representing the class hierarchy, where the first
// element is the absolute superclass
final List<ClassOrInterfaceTypeDetails> cidHierarchy = new ArrayList<ClassOrInterfaceTypeDetails>();
while (cid != null) {
// Note to the top of the list
cidHierarchy.add(0, cid);
cid = cid.getSuperclass();
}
// Now we add this governor, plus all of its superclasses
for (final ClassOrInterfaceTypeDetails currentClass : cidHierarchy) {
memberHoldingTypeDetails.add(currentClass);
// thus MemberHoldingTypeDetails information
for (final MetadataProvider mp : providers) {
// Skip non-ITD providers
if (!(mp instanceof ItdMetadataProvider)) {
continue;
}
// Skip myself
if (mp.getClass().getName().equals(requestingClass)) {
continue;
}
// Determine the key the ITD provider uses for this
// particular type
final String key = ((ItdMetadataProvider) mp).getIdForPhysicalJavaType(currentClass.getDeclaredByMetadataId());
Validate.isTrue(MetadataIdentificationUtils.isIdentifyingInstance(key), "ITD metadata provider '%s' returned an illegal key ('%s')", mp, key);
// Get the metadata and ensure we have ITD type details
// available
final MetadataItem metadataItem = metadataService.get(key);
if (metadataItem == null || !metadataItem.isValid()) {
continue;
}
Validate.isInstanceOf(ItdTypeDetailsProvidingMetadataItem.class, metadataItem, "ITD metadata provider '%s' failed to return the correct metadata type", mp);
final ItdTypeDetailsProvidingMetadataItem itdTypeDetailsMd = (ItdTypeDetailsProvidingMetadataItem) metadataItem;
if (itdTypeDetailsMd.getMemberHoldingTypeDetails() == null) {
continue;
}
// Capture the member details
memberHoldingTypeDetails.add(itdTypeDetailsMd.getMemberHoldingTypeDetails());
}
}
// Turn out list of discovered members into a result
MemberDetails result = new MemberDetailsImpl(memberHoldingTypeDetails);
// Loop until such time as we complete a full loop where no changes
// are made to the result
boolean additionalLoopRequired = true;
while (additionalLoopRequired) {
additionalLoopRequired = false;
for (final MemberDetailsDecorator decorator : decorators) {
final MemberDetails newResult = decorator.decorate(requestingClass, result);
Validate.isTrue(newResult != null, "Decorator '%s' returned an illegal result", decorator.getClass().getName());
if (newResult != null && !newResult.equals(result)) {
additionalLoopRequired = true;
}
result = newResult;
}
}
return result;
}
}
use of org.springframework.roo.metadata.MetadataProvider in project spring-roo by spring-projects.
the class MemberDetailsScannerImpl method bindProviders.
protected void bindProviders() {
synchronized (lock) {
// Get all Services implement MetadataProvider interface
try {
ServiceReference<?>[] references = this.context.getAllServiceReferences(MetadataProvider.class.getName(), null);
for (ServiceReference<?> ref : references) {
MetadataProvider provider = (MetadataProvider) this.context.getService(ref);
Validate.notNull(provider, "Metadata provider required");
final String mid = provider.getProvidesType();
Validate.isTrue(MetadataIdentificationUtils.isIdentifyingClass(mid), "Metadata provider '%s' violated interface contract by returning '%s'", provider, mid);
providers.add(provider);
}
} catch (InvalidSyntaxException e) {
LOGGER.warning("Cannot load MetadataProvider on MemberDetailsScannerImpl.");
}
}
}
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