@Override
public Collection<MetaClass> provideTypesToExpose() {
final Set<MetaClass> types = new HashSet<MetaClass>();
for (final MetaClass metaClass : ClassScanner.getTypesAnnotatedWith(Remote.class)) {
for (final MetaMethod method : metaClass.getDeclaredMethods()) {
if (!method.getReturnType().isVoid()) {
types.add(method.getReturnType().getErased());
}
for (final MetaParameter parameter : method.getParameters()) {
final MetaClass type = parameter.getType();
types.add(type.getErased());
final MetaParameterizedType parameterizedType = type.getParameterizedType();
if (parameterizedType != null) {
for (final MetaType tp : parameterizedType.getTypeParameters()) {
if (tp instanceof MetaClass) {
types.add(((MetaClass) tp).getErased());
}
}
}
}
}
}
return types;
}
/**
* Returns all bindable types on the classpath.
*
* @param context the current generator context
* @return a set of meta classes representing the all bindable types (both annotated and
* configured in ErraiApp.properties).
*/
public static Set<MetaClass> getAllBindableTypes(final GeneratorContext context) {
Collection<MetaClass> annotatedBindableTypes =
ClassScanner.getTypesAnnotatedWith(
Bindable.class, RebindUtils.findTranslatablePackages(context), context);
Set<MetaClass> bindableTypes = new HashSet<MetaClass>(annotatedBindableTypes);
bindableTypes.addAll(DataBindingUtil.getConfiguredBindableTypes());
return bindableTypes;
}
private static EnvironmentConfig loadConfiguredPortableTypes() {
final Map<String, String> frameworkProps = new HashMap<String, String>();
final Map<String, String> mappingAliases = new HashMap<String, String>();
final Set<MetaClass> exposedClasses = new HashSet<MetaClass>();
final Set<MetaClass> nonportableClasses = new HashSet<MetaClass>();
final Set<String> explicitTypes = new HashSet<String>();
final Set<MetaClass> portableNonExposed = new HashSet<MetaClass>();
final Set<MetaClass> exposedFromScanner =
new HashSet<MetaClass>(ClassScanner.getTypesAnnotatedWith(Portable.class));
nonportableClasses.addAll(ClassScanner.getTypesAnnotatedWith(NonPortable.class));
for (final MetaClass cls : exposedFromScanner) {
for (final MetaClass decl : cls.getDeclaredClasses()) {
if (decl.isSynthetic()) {
continue;
}
exposedClasses.add(decl);
}
}
exposedClasses.addAll(exposedFromScanner);
final Enumeration<URL> erraiAppProperties = getErraiAppProperties();
while (erraiAppProperties.hasMoreElements()) {
InputStream inputStream = null;
try {
final URL url = erraiAppProperties.nextElement();
log.debug("checking " + url.getFile() + " for configured types ...");
inputStream = url.openStream();
final ResourceBundle props = new PropertyResourceBundle(inputStream);
if (props != null) {
for (final Object o : props.keySet()) {
final String key = (String) o;
frameworkProps.put(key, props.getString(key));
if (key.equals(CONFIG_ERRAI_SERIALIZABLE_TYPE)) {
for (final String s : props.getString(key).split(" ")) {
try {
exposedClasses.add(MetaClassFactory.get(s.trim()));
explicitTypes.add(s.trim());
} catch (Exception e) {
throw new RuntimeException(
"could not find class defined in ErraiApp.properties for serialization: "
+ s);
}
}
continue;
}
if (key.equals(CONFIG_ERRAI_NONSERIALIZABLE_TYPE)) {
for (final String s : props.getString(key).split(" ")) {
try {
nonportableClasses.add(MetaClassFactory.get(s.trim()));
} catch (Exception e) {
throw new RuntimeException(
"could not find class defined in ErraiApp.properties as nonserializable: "
+ s);
}
}
continue;
}
if (key.equals(CONFIG_ERRAI_MAPPING_ALIASES)) {
for (final String s : props.getString(key).split(" ")) {
try {
final String[] mapping = s.split("->");
if (mapping.length != 2) {
throw new RuntimeException("syntax error: mapping for marshalling alias: " + s);
}
final Class<?> fromMapping = Class.forName(mapping[0].trim());
final Class<?> toMapping = Class.forName(mapping[1].trim());
mappingAliases.put(fromMapping.getName(), toMapping.getName());
explicitTypes.add(fromMapping.getName());
explicitTypes.add(toMapping.getName());
} catch (Exception e) {
throw new RuntimeException(
"could not find class defined in ErraiApp.properties for mapping: " + s);
}
}
continue;
}
}
}
} catch (IOException e) {
throw new RuntimeException("error reading ErraiApp.properties", e);
} finally {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
//
}
}
}
}
// must do this before filling in interfaces and supertypes!
exposedClasses.removeAll(nonportableClasses);
for (final MetaClass cls : exposedClasses) {
fillInInterfacesAndSuperTypes(portableNonExposed, cls);
}
return new EnvironmentConfig(
mappingAliases, exposedClasses, portableNonExposed, explicitTypes, frameworkProps);
}
@Override
protected String generate(TreeLogger logger, GeneratorContext context) {
final ClassStructureBuilder<?> classBuilder =
Implementations.extend(NavigationGraph.class, GENERATED_CLASS_NAME);
// accumulation of (name, pageclass) mappings for dupe detection and dot file generation
BiMap<String, MetaClass> pageNames = HashBiMap.create();
// accumulation UniquePageRoles for ensuring there is exactly one.
Multimap<Class<?>, MetaClass> pageRoles = ArrayListMultimap.create();
ConstructorBlockBuilder<?> ctor = classBuilder.publicConstructor();
final Collection<MetaClass> pages = ClassScanner.getTypesAnnotatedWith(Page.class, context);
for (MetaClass pageClass : pages) {
if (!pageClass.isAssignableTo(IsWidget.class)) {
throw new GenerationException(
"Class "
+ pageClass.getFullyQualifiedName()
+ " is annotated with @Page, so it must implement IsWidget");
}
Page annotation = pageClass.getAnnotation(Page.class);
String pageName = getPageName(pageClass);
List<Class<? extends PageRole>> annotatedPageRoles = Arrays.asList(annotation.role());
MetaClass prevPageWithThisName = pageNames.put(pageName, pageClass);
if (prevPageWithThisName != null) {
throw new GenerationException(
"Page names must be unique, but "
+ prevPageWithThisName
+ " and "
+ pageClass
+ " are both named ["
+ pageName
+ "]");
}
Statement pageImplStmt = generateNewInstanceOfPageImpl(pageClass, pageName);
if (annotatedPageRoles.contains(DefaultPage.class)) {
// need to assign the page impl to a variable and add it to the map twice
ctor.append(Stmt.declareFinalVariable("defaultPage", PageNode.class, pageImplStmt));
pageImplStmt = Variable.get("defaultPage");
ctor.append(Stmt.nestedCall(Refs.get("pagesByName")).invoke("put", "", pageImplStmt));
ctor.append(
Stmt.nestedCall(Refs.get("pagesByRole"))
.invoke("put", DefaultPage.class, pageImplStmt));
} else if (pageName.equals("")) {
throw new GenerationException(
"Page "
+ pageClass.getFullyQualifiedName()
+ " has an empty path. Only the"
+ " page with startingPage=true is permitted to have an empty path.");
}
final String fieldName = StringUtils.uncapitalize(pageClass.getName());
ctor.append(Stmt.declareFinalVariable(fieldName, PageNode.class, pageImplStmt));
ctor.append(
Stmt.nestedCall(Refs.get("pagesByName")).invoke("put", pageName, Refs.get(fieldName)));
for (Class<? extends PageRole> annotatedPageRole : annotatedPageRoles) {
pageRoles.put(annotatedPageRole, pageClass);
// DefaultPage is already added above.
if (!annotatedPageRole.equals(DefaultPage.class))
ctor.append(
Stmt.nestedCall(Refs.get("pagesByRole"))
.invoke("put", annotatedPageRole, Refs.get(fieldName)));
}
}
ctor.finish();
renderNavigationToDotFile(pageNames);
validateDefaultPagePresent(pages, pageRoles);
validateUnique(pageRoles);
return classBuilder.toJavaString();
}