Github user neykov commented on a diff in the pull request:
https://github.com/apache/incubator-brooklyn/pull/1017#discussion_r44642260
--- Diff:
core/src/main/java/org/apache/brooklyn/core/typereg/RegisteredTypes.java ---
@@ -66,180 +94,131 @@ public static RegisteredType of(CatalogItem<?, ?>
item) {
type.deprecated = item.isDeprecated();
// TODO
- // javaType, specType, registeredTypeName ...
- // tags ?
+ // probably not: javaType, specType, registeredTypeName ...
+ // maybe: tags ?
return type;
}
- /** Visitor adapter which can be used to ensure all kinds are
supported */
- public static abstract class RegisteredTypeKindVisitor<T> {
- public T visit(RegisteredType type) {
- if (type==null) throw new NullPointerException("Registered
type must not be null");
- if (type instanceof RegisteredSpecType) {
- return visitSpec((RegisteredSpecType)type);
- }
- // others go here
- throw new IllegalStateException("Unexpected registered type:
"+type.getClass());
- }
-
- protected abstract T visitSpec(RegisteredSpecType type);
-
- // TODO beans, others
+ /** Preferred mechanism for defining a bean {@link RegisteredType} */
+ public static RegisteredType bean(String symbolicName, String version,
TypeImplementationPlan plan, @Nullable Class<?> superType) {
+ return addSuperType(new
BasicRegisteredType(RegisteredTypeKind.BEAN, symbolicName, version, plan),
superType);
}
- public static RegisteredTypeKind getKindOf(RegisteredType type) {
- return new RegisteredTypeKindVisitor<RegisteredTypeKind>() {
- @Override protected RegisteredTypeKind
visitSpec(RegisteredSpecType type) { return RegisteredTypeKind.SPEC; }
- }.visit(type);
+ public static RegisteredType spec(String symbolicName, String version,
TypeImplementationPlan plan, @Nullable Class<?> superType) {
+ return addSuperType(new
BasicRegisteredType(RegisteredTypeKind.SPEC, symbolicName, version, plan),
superType);
}
-
- public abstract static class AbstractRegisteredType implements
RegisteredType {
- final String symbolicName;
- final String version;
+ /** returns the {@link Class} object corresponding to the given java
type name,
+ * using the cache on the type and the loader defined on the type
+ * @param mgmt */
+ @Beta
+ // TODO should this be on the AbstractTypePlanTransformer ?
+ public static Class<?> loadActualJavaType(String javaTypeName,
ManagementContext mgmt, RegisteredType type, RegisteredTypeLoadingContext
context) throws Exception {
+ Class<?> result =
((BasicRegisteredType)type).getCache().get(ACTUAL_JAVA_TYPE);
+ if (result!=null) return result;
- List<OsgiBundleWithUrl> bundles;
- String displayName;
- String description;
- String iconUrl;
- boolean deprecated;
- boolean disabled;
-
- // TODO ensure this is re-populated on rebind
- transient Class<?> javaType;
+ result = CatalogUtils.newClassLoadingContext(mgmt, type,
context==null ? null : context.getLoader()).loadClass( javaTypeName );
+ Preconditions.checkNotNull(result, "Could not load class
"+javaTypeName+"; returned null (should have thrown a different exception!)");
- public AbstractRegisteredType(String symbolicName, String version,
Class<?> javaType) {
- this.symbolicName = symbolicName;
- this.version = version;
- this.javaType = javaType;
- }
-
- @Override
- public String getId() {
- return symbolicName + (version!=null ? ":"+version : "");
- }
+ ((BasicRegisteredType)type).getCache().put(ACTUAL_JAVA_TYPE,
result);
+ return result;
+ }
- @Override
- public String getSymbolicName() {
- return symbolicName;
+ @Beta
+ public static RegisteredType addSuperType(RegisteredType type,
@Nullable Class<?> superType) {
+ if (superType!=null) {
+ ((BasicRegisteredType)type).superTypes.add(superType);
}
+ return type;
+ }
- @Override
- public String getVersion() {
- return version;
- }
-
- @Override
- public Collection<OsgiBundleWithUrl> getLibraries() {
- return bundles;
+ @Beta
+ public static RegisteredType addSuperType(RegisteredType type,
@Nullable RegisteredType superType) {
+ if (superType!=null) {
+ if (isSubTypeOf(superType, type)) {
+ throw new IllegalStateException(superType+" declares
"+type+" as a supertype; cannot set "+superType+" as a supertype of "+type);
+ }
+ ((BasicRegisteredType)type).superTypes.add(superType);
}
+ return type;
+ }
- @Override
- public String getDisplayName() {
- return displayName;
- }
+ /** returns the implementation data for a spec if it is a string (e.g.
plan yaml or java class name); else false */
--- End diff --
; else null
---
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