private <T> CachedRuleSource doExtract(final Class<T> source) { final ModelType<T> type = ModelType.of(source); DefaultMethodModelRuleExtractionContext context = new DefaultMethodModelRuleExtractionContext(type, this); // TODO - exceptions thrown here should point to some extensive documentation on the concept of // class rule sources StructSchema<T> schema = getSchema(source, context); if (schema == null) { throw new InvalidModelRuleDeclarationException(context.problems.format()); } // sort for determinism Set<Method> methods = new TreeSet<Method>(Ordering.usingToString()); methods.addAll(Arrays.asList(source.getDeclaredMethods())); ImmutableList.Builder<ModelProperty<?>> implicitInputs = ImmutableList.builder(); ModelProperty<?> target = null; for (ModelProperty<?> property : schema.getProperties()) { if (property.isAnnotationPresent(RuleTarget.class)) { target = property; } else if (property.isAnnotationPresent(RuleInput.class) && !(property.getSchema() instanceof ScalarValueSchema)) { implicitInputs.add(property); } for (WeaklyTypeReferencingMethod<?, ?> method : property.getAccessors()) { methods.remove(method.getMethod()); } } ImmutableList.Builder<ExtractedRuleDetails> rules = ImmutableList.builder(); for (Method method : methods) { MethodRuleDefinition<?, ?> ruleDefinition = DefaultMethodRuleDefinition.create(source, method); ExtractedModelRule rule = getMethodHandler(ruleDefinition, method, context); if (rule != null) { rules.add(new ExtractedRuleDetails(ruleDefinition, rule)); } } if (context.hasProblems()) { throw new InvalidModelRuleDeclarationException(context.problems.format()); } StructBindings<T> bindings = structBindingsStore.getBindings(schema); if (schema.getProperties().isEmpty()) { return new StatelessRuleSource( rules.build(), Modifier.isAbstract(source.getModifiers()) ? new AbstractRuleSourceFactory<T>(schema, bindings, proxyFactory) : new ConcreteRuleSourceFactory<T>(type)); } else { return new ParameterizedRuleSource( rules.build(), target, implicitInputs.build(), schema, bindings, proxyFactory); } }
private void writeGetters(ClassVisitor visitor, Type generatedType, ModelProperty<?> property) { Class<?> propertyClass = property.getType().getConcreteClass(); Type propertyType = Type.getType(propertyClass); Set<String> processedNames = Sets.newHashSet(); for (WeaklyTypeReferencingMethod<?, ?> weakGetter : property.getGetters()) { Method getter = weakGetter.getMethod(); if (!processedNames.add(getter.getName())) { continue; } MethodVisitor methodVisitor = declareMethod( visitor, getter.getName(), Type.getMethodDescriptor(propertyType), AsmClassGeneratorUtils.signature(getter)); putStateFieldValueOnStack(methodVisitor, generatedType); putConstantOnStack(methodVisitor, property.getName()); invokeStateGetMethod(methodVisitor); castFirstStackElement(methodVisitor, propertyClass); finishVisitingMethod(methodVisitor, returnCode(propertyType)); } }