private ElementMapping loadElement()

in xbean-blueprint/src/main/java/org/apache/xbean/blueprint/generator/QdoxMappingLoader.java [155:304]
135 lines of code
33 McCabe index (conditional complexity)

    private ElementMapping loadElement(JavaDocBuilder builder, JavaClass javaClass) {
        DocletTag xbeanTag = javaClass.getTagByName(XBEAN_ANNOTATION);
        if (xbeanTag == null) {
            return null;
        }

        String element = getElementName(javaClass, xbeanTag);
        String description = getProperty(xbeanTag, "description");
        if (description == null) {
            description = javaClass.getComment();

        }
        String namespace = getProperty(xbeanTag, "namespace", defaultNamespace);
        boolean root = getBooleanProperty(xbeanTag, "rootElement");
        String contentProperty = getProperty(xbeanTag, "contentProperty");
        String factoryClass = getProperty(xbeanTag, "factoryClass");

        Map<String, MapMapping> mapsByPropertyName = new HashMap<String, MapMapping>();
        List<String> flatProperties = new ArrayList<String>();
        Map<String, String> flatCollections = new HashMap<String, String>();
        Set<AttributeMapping> attributes = new HashSet<AttributeMapping>();
        Map<String, AttributeMapping> attributesByPropertyName = new HashMap<String, AttributeMapping>();

        for (JavaClass jClass = javaClass; jClass != null; jClass = jClass.getSuperJavaClass()) {
            BeanProperty[] beanProperties = jClass.getBeanProperties();
            for (BeanProperty beanProperty : beanProperties) {
                // we only care about properties with a setter
                if (beanProperty.getMutator() != null) {
                    AttributeMapping attributeMapping = loadAttribute(beanProperty, "");
                    if (attributeMapping != null) {
                        attributes.add(attributeMapping);
                        attributesByPropertyName.put(attributeMapping.getPropertyName(), attributeMapping);
                    }
                    JavaMethod acc = beanProperty.getAccessor();
                    if (acc != null) {
                        DocletTag mapTag = acc.getTagByName(MAP_ANNOTATION);
                        if (mapTag != null) {
                            MapMapping mm = new MapMapping(
                                    mapTag.getNamedParameter("entryName"),
                                    mapTag.getNamedParameter("keyName"),
                                    Boolean.valueOf(mapTag.getNamedParameter("flat")),
                                    mapTag.getNamedParameter("dups"),
                                    mapTag.getNamedParameter("defaultKey"));
                            mapsByPropertyName.put(beanProperty.getName(), mm);
                        }

                        DocletTag flatColTag = acc.getTagByName(FLAT_COLLECTION_ANNOTATION);
                        if (flatColTag != null) {
                            String childName = flatColTag.getNamedParameter("childElement");
                            if (childName == null)
                                throw new InvalidModelException("Flat collections must specify the childElement attribute.");
                            flatCollections.put(beanProperty.getName(), childName);
                        }

                        DocletTag flatPropTag = acc.getTagByName(FLAT_PROPERTY_ANNOTATION);
                        if (flatPropTag != null) {
                            flatProperties.add(beanProperty.getName());
                        }
                    }
                }
            }
        }

        String initMethod = null;
        String destroyMethod = null;
        String factoryMethod = null;
        for (JavaClass jClass = javaClass; jClass != null; jClass = jClass.getSuperJavaClass()) {
            JavaMethod[] methods = javaClass.getMethods();
            for (JavaMethod method : methods) {
                if (method.isPublic() && !method.isConstructor()) {
                    if (initMethod == null && method.getTagByName(INIT_METHOD_ANNOTATION) != null) {
                        initMethod = method.getName();
                    }
                    if (destroyMethod == null && method.getTagByName(DESTROY_METHOD_ANNOTATION) != null) {
                        destroyMethod = method.getName();
                    }
                    if (factoryMethod == null && method.getTagByName(FACTORY_METHOD_ANNOTATION) != null) {
                        factoryMethod = method.getName();
                    }

                }
            }
        }

        List<List<ParameterMapping>> constructorArgs = new ArrayList<List<ParameterMapping>>();
        JavaMethod[] methods = javaClass.getMethods();
        for (JavaMethod method : methods) {
            JavaParameter[] parameters = method.getParameters();
            if (isValidConstructor(factoryMethod, method, parameters)) {
                List<ParameterMapping> args = new ArrayList<ParameterMapping>(parameters.length);
                for (JavaParameter parameter : parameters) {
                    AttributeMapping attributeMapping = attributesByPropertyName.get(parameter.getName());
                    if (attributeMapping == null) {
                        attributeMapping = loadParameter(parameter);

                        attributes.add(attributeMapping);
                        attributesByPropertyName.put(attributeMapping.getPropertyName(), attributeMapping);
                    }
                    args.add(new ParameterMapping(attributeMapping.getPropertyName(), toMappingType(parameter.getType(), null)));
                }
                constructorArgs.add(Collections.unmodifiableList(args));
            }
        }

        HashSet<String> interfaces = new HashSet<String>();
        interfaces.addAll(getFullyQualifiedNames(javaClass.getImplementedInterfaces()));

        JavaClass actualClass = javaClass;
        if (factoryClass != null) {
            JavaClass clazz = builder.getClassByName(factoryClass);
            if (clazz != null) {
                log.info("Detected factory: using " + factoryClass + " instead of " + javaClass.getFullyQualifiedName());
                actualClass = clazz;
            } else {
                log.info("Could not load class built by factory: " + factoryClass);
            }
        }

        ArrayList<String> superClasses = new ArrayList<String>();
        JavaClass p = actualClass;
        if (actualClass != javaClass) {
            superClasses.add(actualClass.getFullyQualifiedName());
        }
        while (true) {
            JavaClass s = p.getSuperJavaClass();
            if (s == null || s.equals(p) || "java.lang.Object".equals(s.getFullyQualifiedName())) {
                break;
            }
            p = s;
            superClasses.add(p.getFullyQualifiedName());
            interfaces.addAll(getFullyQualifiedNames(p.getImplementedInterfaces()));
        }

        return new ElementMapping(namespace,
                element,
                javaClass.getFullyQualifiedName(),
                description,
                root,
                initMethod,
                destroyMethod,
                factoryMethod,
                contentProperty,
                attributes,
                constructorArgs,
                flatProperties,
                mapsByPropertyName,
                flatCollections,
                superClasses,
                interfaces);
    }