private void emitBody(SourceWriter w) throws NotFoundException {
JClassType baseClass =
context_.getTypeOracle().getType("org.rstudio.core.client.js.JsObjectInjector");
JClassType c = baseType_.asParameterizationOf(baseClass.isGenericType());
JType typeToInject = c.isParameterized().getTypeArgs()[0];
w.print("public native final void injectObject(");
w.print(typeToInject.getQualifiedSourceName());
w.println(" value) /*-{");
w.indent();
w.println(baseExpression_ + " = {");
w.indent();
JMethod[] methods = typeToInject.isClassOrInterface().getMethods();
for (int i = 0; i < methods.length; i++) {
JMethod method = methods[i];
final JParameter[] jParameters = method.getParameters();
StringBuilder argString = new StringBuilder();
for (int j = 0; j < jParameters.length; j++) {
argString.append("_").append(j);
if (j < jParameters.length - 1) argString.append(", ");
}
w.println(method.getName() + ": function(" + argString + ") {");
w.indent();
if (!method.getReturnType().getQualifiedSourceName().equals("void")) w.print("return ");
w.print("value.@");
w.print(typeToInject.getQualifiedSourceName());
w.print("::");
w.print(method.getName());
w.print("(");
for (JParameter param : jParameters) w.print(param.getType().getJNISignature());
w.print(")(");
w.print(argString.toString());
w.println(");");
w.outdent();
w.print("}");
w.println((i < methods.length - 1) ? "," : "");
}
w.outdent();
w.println("};");
w.outdent();
w.println("}-*/;");
}
public RequestFactoryModel(TreeLogger logger, JClassType factoryType)
throws UnableToCompleteException {
this.logger = logger;
this.factoryType = factoryType;
this.oracle = factoryType.getOracle();
collectionInterface = oracle.findType(Collection.class.getCanonicalName());
entityProxyInterface = oracle.findType(EntityProxy.class.getCanonicalName());
instanceRequestInterface = oracle.findType(InstanceRequest.class.getCanonicalName());
listInterface = oracle.findType(List.class.getCanonicalName());
mapInterface = oracle.findType(Map.class.getCanonicalName());
requestContextInterface = oracle.findType(RequestContext.class.getCanonicalName());
requestFactoryInterface = oracle.findType(RequestFactory.class.getCanonicalName());
requestInterface = oracle.findType(Request.class.getCanonicalName());
setInterface = oracle.findType(Set.class.getCanonicalName());
splittableType = oracle.findType(Splittable.class.getCanonicalName());
valueProxyInterface = oracle.findType(ValueProxy.class.getCanonicalName());
extraTypes = checkExtraTypes(factoryType, false);
for (JMethod method : factoryType.getOverridableMethods()) {
if (method.getEnclosingType().equals(requestFactoryInterface)) {
// Ignore methods defined an RequestFactory itself
continue;
}
if (method.getParameters().length > 0) {
poison("Unexpected parameter on method %s", method.getName());
continue;
}
JClassType contextType = method.getReturnType().isInterface();
if (contextType == null || !requestContextInterface.isAssignableFrom(contextType)) {
poison(
"Unexpected return type %s on method %s is not" + " an interface assignable to %s",
method.getReturnType().getQualifiedSourceName(),
method.getName(),
requestContextInterface.getSimpleSourceName());
continue;
}
ContextMethod.Builder builder = new ContextMethod.Builder();
builder.setDeclaredMethod(method);
buildContextMethod(builder, contextType);
contextMethods.add(builder.build());
}
if (poisoned) {
die(poisonedMessage());
}
}
private String getRestMethod(JMethod method) throws UnableToCompleteException {
String restMethod = null;
if (method.getAnnotation(DELETE.class) != null) {
restMethod = METHOD_DELETE;
} else if (method.getAnnotation(GET.class) != null) {
restMethod = METHOD_GET;
} else if (method.getAnnotation(HEAD.class) != null) {
restMethod = METHOD_HEAD;
} else if (method.getAnnotation(OPTIONS.class) != null) {
restMethod = METHOD_OPTIONS;
} else if (method.getAnnotation(POST.class) != null) {
restMethod = METHOD_POST;
} else if (method.getAnnotation(PUT.class) != null) {
restMethod = METHOD_PUT;
} else if (method.getAnnotation(JSONP.class) != null) {
restMethod = METHOD_JSONP;
} else {
restMethod = method.getName();
if (!REST_METHODS.contains(restMethod)) {
getLogger()
.log(
ERROR,
"Invalid rest method. It must either have a lower case rest method name or have a javax rs method annotation: "
+ method.getReadableDeclaration());
throw new UnableToCompleteException();
}
}
return restMethod;
}
Annotation[] extractAnnotations(
TreeLogger logger,
JClassType type,
JMethod ifaceMethod,
JMethod classMethod,
GeneratorContext ctx) {
Map<Class<?>, Annotation> unique = new LinkedHashMap<Class<?>, Annotation>();
// Prefer annotation on classes before interfaces.
for (Annotation classAnno : classMethod.getAnnotations()) {
unique.put(classAnno.annotationType(), classAnno);
}
// Transverse supertypes
JClassType next = type.getSuperclass();
while (next != null) {
JMethod method = next.findMethod(ifaceMethod.getName(), ifaceMethod.getParameterTypes());
if (method != null)
for (Annotation classAnno : method.getAnnotations()) {
unique.put(classAnno.annotationType(), classAnno);
}
next = next.getSuperclass();
}
for (Annotation ifaceAnno : ifaceMethod.getAnnotations()) {
unique.put(ifaceAnno.annotationType(), ifaceAnno);
}
return unique.values().toArray(new Annotation[unique.size()]);
}
static String badContextReturnType(
JMethod method, JClassType requestInterface, JClassType instanceRequestInterface) {
return String.format(
"Return type %s in method %s must be an interface assignable" + " to %s or %s",
method.getReturnType(),
method.getName(),
requestInterface.getSimpleSourceName(),
instanceRequestInterface.getSimpleSourceName());
}
/** Write out the JavaScript wrapper around a Java method. */
static void writeFunctionForMethod(FragmentGeneratorContext context, JMethod m)
throws UnableToCompleteException {
context.parentLogger.branch(TreeLogger.DEBUG, "Writing function() for " + m.getName(), null);
if (isIdentityFunction(context, m)) {
writeIdentityInvocation(context, m);
} else {
writeLinkageInvocation(context, m);
}
}
/**
* @param srcWriter
* @param type
* @param parentVariable
* @param added
* @param iocContainerVariable
* @param configurations
*/
private static void injectMethods(
SourcePrinter srcWriter,
JClassType type,
String parentVariable,
Set<String> added,
String iocContainerVariable,
Map<String, IocConfig<?>> configurations) {
for (JMethod method : type.getMethods()) {
Inject inject = method.getAnnotation(Inject.class);
if (inject != null && !method.isStatic()) {
String methodName = method.getName();
if (!added.contains(methodName + "()")) {
added.add(methodName + "()");
JParameter[] parameters = method.getParameters();
List<String> params = new ArrayList<String>();
for (JParameter parameter : parameters) {
JType parameterType = parameter.getType();
if ((parameterType.isPrimitive() != null)) {
throw new IoCException(
"IoC Error Method ["
+ methodName
+ "] from class ["
+ type.getQualifiedSourceName()
+ "] declares an invalid parameter. Primitive types are not allowed here");
}
String variableName = "parameter_" + methodName + "_" + parameter.getName();
params.add(variableName);
String injectionExpression =
getParameterInjectionExpression(parameter, iocContainerVariable, configurations);
srcWriter.println(
parameterType.getQualifiedSourceName()
+ " "
+ variableName
+ " = "
+ injectionExpression
+ ";");
}
srcWriter.print(parentVariable + "." + methodName + "(");
boolean first = true;
for (String param : params) {
if (!first) {
srcWriter.print(", ");
}
first = false;
srcWriter.print(param);
}
srcWriter.println(");");
}
}
}
}
private void implementAction(
TreeLogger logger,
ModelGenerator generator,
JMethod method,
ModelMagic models,
Annotation[] annos) {
boolean fluent = ModelGeneratorGwt.isFluent(method);
JPrimitiveType primitive = method.getReturnType().isPrimitive();
if (primitive != JPrimitiveType.VOID) {
if (!fluent) {
// non-fluent, non-void return type is not an action
// TODO change this!
// implementGetter(logger, mb, method, models, annos,
// method.getReturnType().getSimpleSourceName());
logger.log(
Type.ERROR,
"No getter for "
+ method.getJsniSignature()
+ "; "
+ "If your type does not use javabean getField() naming conventions, "
+ "then you MUST annotate a getter field with @GetterField");
}
return;
}
MethodBuffer mb =
generator.createMethod(
method.getReturnType().getQualifiedSourceName(),
method.getName(),
ModelGeneratorGwt.typeToParameterString(method.getParameterTypes()));
if (method.getName().equals("clear")) {
// implement clear
}
if (fluent) {
mb.println("return this;");
}
}
public static void checkReturnType(TreeLogger logger, JMethod method)
throws UnableToCompleteException {
if (!method.getReturnType().getQualifiedSourceName().equals("void")) {
logger.log(
Type.ERROR,
"The method "
+ method.getEnclosingType().getQualifiedSourceName()
+ "."
+ method.getName()
+ " returns "
+ method.getReturnType().getQualifiedSourceName()
+ " but only void is supported for methods in RPC interfaces.");
throw new UnableToCompleteException();
}
}
/** Simply prints a JSNI reference to the exported function. */
private static void writeIdentityInvocation(FragmentGeneratorContext context, JMethod m)
throws UnableToCompleteException {
SourceWriter sw = context.sw;
JParameter[] parameters = m.getParameters();
sw.print("@");
sw.print(m.getEnclosingType().getQualifiedSourceName());
sw.print("::");
sw.print(m.getName());
sw.print("(");
// Argument list for the Java invocation
for (int i = 0; i < parameters.length; i++) {
sw.print(parameters[i].getType().getJNISignature());
}
sw.print(")");
}
private void implementException(TreeLogger logger, MethodBuffer mb, JMethod method) {
logger.log(
Type.WARN,
"Unable to implement model method for "
+ method.getJsniSignature()
+ "; "
+ "inserting a runtime exception."
+ " Either annotate the method with an xapi.annotation.model, "
+ " or ensure it conforms to javabean naming conventions get___, set___");
mb.println("throw new RuntimeException(\"");
mb.println(
"Model method "
+ method.getEnclosingType().getSimpleSourceName()
+ "."
+ method.getName()
+ " not annotated correctly");
mb.println("\");");
}
@Override
protected void generateWrapperMethod(JMethod method, SourcePrinter srcWriter) {
if (mustDelegateToController(method)) {
JType returnType = method.getReturnType().getErasedType();
srcWriter.println(method.getReadableDeclaration(false, false, false, false, true) + "{");
if (returnType != JPrimitiveType.VOID) {
srcWriter.print("return ");
}
srcWriter.print("this._controller." + method.getName() + "(");
boolean needsComma = false;
for (JParameter parameter : method.getParameters()) {
if (needsComma) {
srcWriter.print(", ");
}
needsComma = true;
srcWriter.print(parameter.getName());
}
srcWriter.println(");");
srcWriter.println("}");
}
}
/** Determines if the exported method can be used as-is. */
private static boolean isIdentityFunction(FragmentGeneratorContext context, JMethod m)
throws UnableToCompleteException {
TreeLogger logger =
context.parentLogger.branch(
TreeLogger.DEBUG, "Determining identity status of " + m.getName(), null);
FragmentGeneratorOracle fgo = context.fragmentGeneratorOracle;
boolean identityOnly = m.isStatic();
JParameter[] parameters = m.getParameters();
identityOnly &=
context
.fragmentGeneratorOracle
.findFragmentGenerator(logger, context.typeOracle, m.getReturnType())
.isIdentity();
for (int i = 0; i < parameters.length && identityOnly; i++) {
FragmentGenerator fragmentGenerator =
fgo.findFragmentGenerator(logger, context.typeOracle, parameters[i].getType());
identityOnly &= fragmentGenerator.isIdentity();
}
return identityOnly;
}
private RequestQueueModel collectModel(
TreeLogger logger, GeneratorContext context, JClassType toGenerate)
throws UnableToCompleteException {
RequestQueueModel.Builder rqBuilder = new RequestQueueModel.Builder();
TypeOracle typeOracle = context.getTypeOracle();
JClassType requestQueue = typeOracle.findType(RequestQueue.class.getName());
JClassType asyncCallback = typeOracle.findType(AsyncCallback.class.getName());
JClassType voidType = typeOracle.findType(Void.class.getName());
rqBuilder.setRequestQueueInterfaceName(toGenerate.getParameterizedQualifiedSourceName());
AsyncServiceModel.Builder serviceBuilder = new AsyncServiceModel.Builder();
for (JMethod m : toGenerate.getMethods()) {
TreeLogger serviceLogger =
logger.branch(Type.DEBUG, "Reading async service " + m.getReadableDeclaration());
// Skip those defined at RequestQueue
if (m.getEnclosingType().equals(requestQueue)) {
continue;
}
JClassType returnType = m.getReturnType().isClassOrInterface();
if (returnType == null) {
serviceLogger.log(Type.ERROR, "Unexpected method return type " + returnType);
throw new UnableToCompleteException();
}
serviceBuilder.setAsyncServiceInterfaceName(returnType.getParameterizedQualifiedSourceName());
serviceBuilder.setDeclaredMethodName(m.getName());
Service serviceAnnotation = m.getAnnotation(Service.class);
if (serviceAnnotation == null) {
serviceLogger.log(Type.ERROR, "Missing @Service annotation");
throw new UnableToCompleteException();
}
serviceBuilder.setService(serviceAnnotation.value().getName());
AsyncServiceMethodModel.Builder methodBuilder = new AsyncServiceMethodModel.Builder();
for (JMethod asyncMethod : m.getReturnType().isClassOrInterface().getMethods()) {
TreeLogger methodLogger =
serviceLogger.branch(
Type.DEBUG, "Reading service method " + asyncMethod.getReadableDeclaration());
List<JType> types = new ArrayList<JType>();
methodBuilder.setReturnTypeName(voidType.getParameterizedQualifiedSourceName());
boolean asyncFound = false;
for (JType param : asyncMethod.getParameterTypes()) {
if (asyncFound) {
methodLogger.log(
Type.WARN, "Already passed an AsyncCallback param - is that what you meant?");
}
if (param.isClassOrInterface() != null
&& param.isClassOrInterface().isAssignableTo(asyncCallback)) {
JClassType boxedReturnType =
ModelUtils.findParameterizationOf(asyncCallback, param.isClassOrInterface())[0];
methodBuilder
.setHasCallback(true)
.setReturnTypeName(boxedReturnType.getParameterizedQualifiedSourceName());
asyncFound = true;
continue; // should be last, check for this...
}
types.add(param);
}
Set<JClassType> throwables = new HashSet<JClassType>();
Throws t = asyncMethod.getAnnotation(Throws.class);
if (t != null) {
for (Class<? extends Throwable> throwable : t.value()) {
throwables.add(typeOracle.findType(throwable.getName()));
}
}
methodBuilder
.setMethodName(asyncMethod.getName())
.setArgTypes(types)
.setThrowables(throwables);
serviceBuilder.addMethod(methodBuilder.build());
}
rqBuilder.addService(serviceBuilder.build());
}
return rqBuilder.build();
}
/** Writes a linkage function object that will invoke the exported function. */
private static void writeLinkageInvocation(FragmentGeneratorContext context, JMethod m)
throws UnableToCompleteException {
TreeLogger logger =
context.parentLogger.branch(
TreeLogger.DEBUG, "Writing function() for " + m.getName(), null);
SourceWriter sw = context.sw;
JParameter[] parameters = m.getParameters();
FragmentGeneratorOracle fgo = context.fragmentGeneratorOracle;
FragmentGenerator returnFragmentGenerator =
fgo.findFragmentGenerator(logger, context.typeOracle, m.getReturnType());
sw.print("function(");
for (int i = 0; i < parameters.length; i++) {
sw.print("arg");
sw.print(String.valueOf(i));
if (i < parameters.length - 1) {
sw.print(", ");
}
}
sw.println(") {");
sw.indent();
if (returnFragmentGenerator.isIdentity()) {
sw.print("return ");
} else {
sw.print("var javaReturn = ");
}
// Don't need to reference the instance on a static method
if (!m.isStatic()) {
sw.print(context.parameterName);
sw.print(".");
}
sw.print("@");
sw.print(m.getEnclosingType().getQualifiedSourceName());
sw.print("::");
sw.print(m.getName());
sw.print("(");
// Argument list for the Java invocation
for (int i = 0; i < parameters.length; i++) {
sw.print(parameters[i].getType().getJNISignature());
}
sw.println(")(");
// Indent the parameters, each on its own like to improve readability
sw.indent();
sw.indent();
for (int i = 0; i < parameters.length; i++) {
// Create a sub-context to generate the wrap/unwrap logic
JType returnType = parameters[i].getType();
FragmentGeneratorContext subParams = new FragmentGeneratorContext(context);
subParams.returnType = returnType;
subParams.parameterName = "arg" + i;
FragmentGenerator fragmentGenerator =
fgo.findFragmentGenerator(logger, context.typeOracle, returnType);
if (fragmentGenerator == null) {
logger.log(
TreeLogger.ERROR,
"No fragment generator for " + returnType.getQualifiedSourceName(),
null);
throw new UnableToCompleteException();
}
fragmentGenerator.fromJS(subParams);
if (i < parameters.length - 1) {
sw.println(", ");
}
}
sw.outdent();
sw.outdent();
sw.println(");");
if (!returnFragmentGenerator.isIdentity()) {
FragmentGeneratorContext returnContext = new FragmentGeneratorContext(context);
returnContext.parameterName = "javaReturn";
returnContext.returnType = m.getReturnType();
sw.print("return ");
returnFragmentGenerator.toJS(returnContext);
sw.println(";");
}
sw.outdent();
sw.print("}");
}
private void grabAnnotations(
TreeLogger logger,
ModelMagic models,
HasModelFields fields,
JMethod method,
Annotation[] annos,
JClassType type) {
GetterFor getter = method.getAnnotation(GetterFor.class);
ClientToServer c2s = method.getAnnotation(ClientToServer.class);
ServerToClient s2c = method.getAnnotation(ServerToClient.class);
Persistent persist = method.getAnnotation(Persistent.class);
Serializable serial = method.getAnnotation(Serializable.class);
Named name = method.getAnnotation(Named.class);
for (Annotation annotation : annos) {
if (getter == null && annotation.annotationType() == GetterFor.class)
getter = (GetterFor) annotation;
else if (serial == null && annotation.annotationType() == Serializable.class)
serial = (Serializable) annotation;
else if (persist == null && annotation.annotationType() == Persistent.class)
persist = (Persistent) annotation;
else if (c2s == null && annotation.annotationType() == ClientToServer.class)
c2s = (ClientToServer) annotation;
else if (s2c == null && annotation.annotationType() == ServerToClient.class)
s2c = (ServerToClient) annotation;
else if (name == null && annotation.annotationType() == Named.class)
name = (Named) annotation;
}
String fieldName;
if (name == null) {
fieldName = ModelGeneratorGwt.fieldName(method, models);
} else {
fieldName = name.value();
if (X_Runtime.isDebug()) {
logger.log(
Type.TRACE,
"Named method "
+ method.getJsniSignature()
+ " "
+ fieldName
+ ", from @Named attribute. Heuristic name: "
+ ModelGeneratorGwt.fieldName(method, models));
}
}
if ("".equals(fieldName)) fieldName = method.getName();
ModelField field = fields.getOrMakeField(fieldName);
if (field.getPersistent() == null) {
field.setPersistent(persist);
} else {
assert persist == null || (persist.patchable() == field.getPersistent().patchable())
: "Model annotation mismatch! Field "
+ field.getName()
+ " of type "
+ type.getQualifiedSourceName()
+ " contained multiple @Persistent annotations which did not match. "
+ "You may have to override an annotated supertype method with the correct "
+ "@Persistent annotation.";
}
if (field.getSerializable() == null) {
field.setSerializable(serial);
} else {
// assert serial == null ||
// ( // this block is all assert, so it will compile out of production.
// serial.clientToServer() == field.getSerializable().clientToServer() &&
// serial.serverToClient() == field.getSerializable().serverToClient() &&
// serial.obfuscated() == field.getSerializable().obfuscated()
// ) : "Model annotation mismatch! Field "+field.getName()+" contained " +
// "multiple @Serializable annotations which did not match. You may " +
// "have to override an annotated supertype method with the correct " +
// "@Serializable annotation.";
}
if (field.getServerToClient() == null) {
field.setServerToClient(s2c);
} else {
assert s2c == null || s2c.enabled() == field.getServerToClient().enabled()
: "Model annotation mismatch! Field "
+ field.getName()
+ " was marked as "
+ "both "
+ "serverToClient"
+ " enabled and disabled. Please correct this ambiguity;"
+ " your model is now undeterministic and may break unexpectedly.";
}
if (field.getClientToServer() == null) {
field.setClientToServer(c2s);
} else {
assert c2s == null || c2s.enabled() == field.getClientToServer().enabled()
: "Model annotation mismatch! Field "
+ field.getName()
+ " was marked as "
+ "both "
+ "clientToServer"
+ " enabled and disabled. Please correct this ambiguity;"
+ " your model is now undeterministic and may break unexpectedly.";
}
}
static String noSettersAllowed(JMethod found) {
return String.format("Optional setters not allowed here: ", found.getName());
}
public void build(
TreeLogger logger, SourceBuilder<ModelMagic> builder, GeneratorContext ctx, JClassType type)
throws UnableToCompleteException {
ModelMagic models = builder.getPayload();
ModelGenerator generator = new ModelGenerator(builder);
// Step one; determine if we already have a concrete type or not.
// TODO if JClassType is final, we need to wrap it using a delegate model.
JClassType concrete;
// ClassBuffer cb = builder.getClassBuffer();
JClassType root = models.getRootType(logger, ctx);
if (type.isInterface() == null && type != root) {
concrete = type;
generator.setSuperClass(type.getQualifiedSourceName());
} else {
// We have an interface on our hands; search for an existing or
// buildable model.
// search for a supertype to inherit. Anything that extends Model,
// does not implement any method we do implement, preferred type
// being the one that implements the most interfaces possible
final JClassType model;
try {
model = ctx.getTypeOracle().getType(Model.class.getName());
} catch (NotFoundException e) {
logger.log(
Type.ERROR,
"Cannot load "
+ Model.class.getName()
+ "; "
+ "make sure you have xapi-gwt-model:sources.jar on classpath.");
throw new UnableToCompleteException();
}
concrete = model;
for (JClassType supertype : concrete.getFlattenedSupertypeHierarchy()) {
// Only interfaces explicitly extending Model become concrete.
if (ModelGeneratorGwt.canBeSupertype(type, supertype)) {
// prefer the concrete type with the most methods in common.
concrete = supertype;
}
}
if (concrete == null || concrete == model) {
concrete = models.getRootType(logger, ctx);
generator.setSuperClass(concrete.getQualifiedSourceName());
} else {
// We have to make sure this concrete supertype is created.
if (!models.hasModel(concrete.getQualifiedSourceName())) {
// Concrete type is not cached. Build it now.
RebindResult result =
ModelGeneratorGwt.execImpl(logger, ctx, concrete.getQualifiedSourceName());
generator.setSuperClass(result.getResultTypeName());
}
}
}
// This will probably become jsni, if we can avoid jso interface sickness...
generator.createFactory(type.getQualifiedSourceName());
HasModelFields fieldMap = new HasModelFields();
fieldMap.setDefaultSerializable(type.getAnnotation(Serializable.class));
for (JMethod method : methods.keySet()) {
if (!toGenerate.contains(ModelGeneratorGwt.toSignature(method))) {
logger.log(
Type.TRACE, "Skipping method defined in supertype: " + method.getJsniSignature());
continue;
}
Annotation[] annos = methods.get(method);
String methodName = method.getName();
String returnType = method.getReturnType().getQualifiedSourceName();
String params = ModelGeneratorGwt.typeToParameterString(method.getParameterTypes());
// TODO: check imports if we are safe to use simple name.
returnType = method.getReturnType().getSimpleSourceName();
IsType returns = X_Source.binaryToSource(method.getReturnType().getQualifiedBinaryName());
IsType[] parameters = ModelGeneratorGwt.toTypes(method.getParameterTypes());
GetterFor getter = method.getAnnotation(GetterFor.class);
if (getter != null) {
String name = getter.value();
if (name.length() == 0) {
name = ModelUtil.stripGetter(method.getName());
}
ModelField field = fieldMap.getOrMakeField(name);
field.setType(returnType);
assert parameters.length == 0
: "A getter method cannot have parameters. "
+ "Generated code requires using getter methods without args. You provided "
+ method.getJsniSignature();
grabAnnotations(logger, models, fieldMap, method, annos, type);
field.addGetter(returns, methodName);
continue;
}
SetterFor setter = method.getAnnotation(SetterFor.class);
if (setter != null) {
String name = setter.value();
if (name.length() == 0) name = ModelUtil.stripSetter(method.getName());
grabAnnotations(logger, models, fieldMap, method, annos, type);
continue;
}
if (method.getAnnotation(DeleterFor.class) != null) {
implementAction(logger, generator, method, models, annos);
continue;
}
// No annotation. We have to guess the type.
boolean isVoid = method.getReturnType().isPrimitive() == JPrimitiveType.VOID;
boolean isGetter =
methodName.startsWith("get")
|| methodName.startsWith("is")
|| methodName.startsWith("has");
boolean isSetter, isAction;
if (isGetter) {
assert !isVoid
: "Cannot have a void return type with method name "
+ methodName
+ "; getter prefixes get(), is() and has() must return a type.";
isSetter = false;
isAction = false;
} else {
isSetter =
methodName.startsWith("set")
|| methodName.startsWith("add")
|| methodName.startsWith("put")
|| methodName.startsWith("rem")
|| methodName.startsWith("remove");
if (isSetter) {
isAction = false;
} else {
isAction = true;
}
}
if (isVoid) {
// definitely a setter / action method.
if (isSetter) {
MethodBuffer mb = generator.createMethod(returnType, methodName, params);
implementSetter(logger, mb, method, models, fieldMap, annos);
} else if (isAction) {
implementAction(logger, generator, method, models, annos);
} else {
MethodBuffer mb = generator.createMethod(returnType, methodName, params);
implementException(logger, mb, method);
}
} else {
if (isGetter) {
String name = ModelUtil.stripGetter(method.getName());
ModelField field = fieldMap.getOrMakeField(name);
field.setType(returnType);
field.addGetter(returns, methodName);
grabAnnotations(logger, models, fieldMap, method, annos, type);
} else if (isSetter) {
MethodBuffer mb = generator.createMethod(returnType, methodName, params);
implementSetter(logger, mb, method, models, fieldMap, annos);
} else if (isAction) {
implementAction(logger, generator, method, models, annos);
} else {
MethodBuffer mb = generator.createMethod(returnType, methodName, params);
implementException(logger, mb, method);
}
}
}
generator.generateModel(
X_Source.toType(builder.getPackage(), builder.getClassBuffer().getSimpleName()), fieldMap);
}
@Override
public String generate(TreeLogger logger, GeneratorContext context, String typeName)
throws UnableToCompleteException {
// make sure it is an interface
TypeOracle oracle = context.getTypeOracle();
propertyAccessInterface = oracle.findType(Name.getSourceNameForClass(PropertyAccess.class));
modelKeyProviderInterface = oracle.findType(Name.getSourceNameForClass(ModelKeyProvider.class));
valueProviderInterface = oracle.findType(Name.getSourceNameForClass(ValueProvider.class));
labelProviderInterface = oracle.findType(Name.getSourceNameForClass(LabelProvider.class));
JClassType toGenerate = oracle.findType(typeName).isInterface();
if (toGenerate == null) {
logger.log(TreeLogger.ERROR, typeName + " is not an interface type");
throw new UnableToCompleteException();
}
if (!toGenerate.isAssignableTo(propertyAccessInterface)) {
logger.log(Type.ERROR, "This isn't a PropertyAccess subtype...");
throw new UnableToCompleteException();
}
// Get the name of the new type
String packageName = toGenerate.getPackage().getName();
String simpleSourceName = toGenerate.getName().replace('.', '_') + "Impl";
PrintWriter pw = context.tryCreate(logger, packageName, simpleSourceName);
if (pw == null) {
return packageName + "." + simpleSourceName;
}
// start making the class, with basic imports
ClassSourceFileComposerFactory factory =
new ClassSourceFileComposerFactory(packageName, simpleSourceName);
factory.addImplementedInterface(typeName);
SourceWriter sw = factory.createSourceWriter(context, pw);
// for each method,
for (JMethod m : toGenerate.getOverridableMethods()) {
TreeLogger l = logger.branch(Type.DEBUG, "Building method: " + m.getReadableDeclaration());
// no support for params at this time
if (m.getParameters().length != 0) {
l.log(Type.ERROR, "Method " + m.toString() + " must not have parameters.");
throw new UnableToCompleteException();
}
// ask for the types that provide the property data
JClassType ret = m.getReturnType().isClassOrInterface();
final AbstractCreator c;
if (ret.isAssignableTo(valueProviderInterface)) {
c = new ValueProviderCreator(context, l, m);
} else if (ret.isAssignableTo(modelKeyProviderInterface)) {
c = new ModelKeyProviderCreator(context, l, m);
} else if (ret.isAssignableTo(labelProviderInterface)) {
c = new LabelProviderCreator(context, l, m);
} else {
logger.log(Type.ERROR, "Method uses a return type that cannot be generated");
throw new UnableToCompleteException();
}
c.create();
// build the method
// public ValueProvider<T, V> name() { return NameValueProvider.instance;
// }
sw.println("public %1$s %2$s() {", m.getReturnType().getQualifiedSourceName(), m.getName());
sw.indentln("return %1$s;", c.getInstanceExpression());
sw.println("}");
}
sw.commit(logger);
return factory.getCreatedClassName();
}
private void writeMethodImpl(JMethod method) throws UnableToCompleteException {
boolean returnRequest = false;
if (method.getReturnType() != JPrimitiveType.VOID) {
if (!method.getReturnType().getQualifiedSourceName().equals(Request.class.getName())
&& !method
.getReturnType()
.getQualifiedSourceName()
.equals(JsonpRequest.class.getName())) {
getLogger()
.log(
ERROR,
"Invalid rest method. Method must have void, Request or JsonpRequest return types: "
+ method.getReadableDeclaration());
throw new UnableToCompleteException();
} else {
returnRequest = true;
}
}
Json jsonAnnotation = source.getAnnotation(Json.class);
final Style classStyle = jsonAnnotation != null ? jsonAnnotation.style() : Style.DEFAULT;
Options classOptions = source.getAnnotation(Options.class);
Options options = method.getAnnotation(Options.class);
p(method.getReadableDeclaration(false, false, false, false, true) + " {").i(1);
{
String restMethod = getRestMethod(method);
LinkedList<JParameter> args =
new LinkedList<JParameter>(Arrays.asList(method.getParameters()));
// the last arg should be the callback.
if (args.isEmpty()) {
getLogger()
.log(
ERROR,
"Invalid rest method. Method must declare at least a callback argument: "
+ method.getReadableDeclaration());
throw new UnableToCompleteException();
}
JParameter callbackArg = args.removeLast();
JClassType callbackType = callbackArg.getType().isClassOrInterface();
JClassType methodCallbackType = METHOD_CALLBACK_TYPE;
if (callbackType == null || !callbackType.isAssignableTo(methodCallbackType)) {
getLogger()
.log(
ERROR,
"Invalid rest method. Last argument must be a "
+ methodCallbackType.getName()
+ " type: "
+ method.getReadableDeclaration());
throw new UnableToCompleteException();
}
JClassType resultType = getCallbackTypeGenericClass(callbackType);
String pathExpression = null;
Path pathAnnotation = method.getAnnotation(Path.class);
if (pathAnnotation != null) {
pathExpression = wrap(pathAnnotation.value());
}
JParameter contentArg = null;
HashMap<String, JParameter> queryParams = new HashMap<String, JParameter>();
HashMap<String, JParameter> formParams = new HashMap<String, JParameter>();
HashMap<String, JParameter> headerParams = new HashMap<String, JParameter>();
for (JParameter arg : args) {
PathParam paramPath = arg.getAnnotation(PathParam.class);
if (paramPath != null) {
if (pathExpression == null) {
getLogger()
.log(
ERROR,
"Invalid rest method. Invalid @PathParam annotation. Method is missing the @Path annotation: "
+ method.getReadableDeclaration());
throw new UnableToCompleteException();
}
pathExpression = pathExpression(pathExpression, arg, paramPath);
// .replaceAll(Pattern.quote("{" + paramPath.value() + "}"),
// "\"+com.google.gwt.http.client.URL.encodePathSegment(" + toStringExpression(arg) +
// ")+\"");
if (arg.getAnnotation(Attribute.class) != null) {
// allow part of the arg-object participate in as PathParam and the object goes over the
// wire
contentArg = arg;
}
continue;
}
QueryParam queryParam = arg.getAnnotation(QueryParam.class);
if (queryParam != null) {
queryParams.put(queryParam.value(), arg);
continue;
}
FormParam formParam = arg.getAnnotation(FormParam.class);
if (formParam != null) {
formParams.put(formParam.value(), arg);
continue;
}
HeaderParam headerParam = arg.getAnnotation(HeaderParam.class);
if (headerParam != null) {
headerParams.put(headerParam.value(), arg);
continue;
}
if (!formParams.isEmpty()) {
getLogger()
.log(
ERROR,
"You can not have both @FormParam parameters and a content parameter: "
+ method.getReadableDeclaration());
throw new UnableToCompleteException();
}
if (contentArg != null) {
getLogger()
.log(
ERROR,
"Invalid rest method. Only one content parameter is supported: "
+ method.getReadableDeclaration());
throw new UnableToCompleteException();
}
contentArg = arg;
}
String acceptTypeBuiltIn = null;
if (callbackType.equals(TEXT_CALLBACK_TYPE)) {
acceptTypeBuiltIn = "CONTENT_TYPE_TEXT";
} else if (callbackType.equals(JSON_CALLBACK_TYPE)) {
acceptTypeBuiltIn = "CONTENT_TYPE_JSON";
} else if (callbackType.isAssignableTo(OVERLAY_CALLBACK_TYPE)) {
acceptTypeBuiltIn = "CONTENT_TYPE_JSON";
} else if (callbackType.equals(XML_CALLBACK_TYPE)) {
acceptTypeBuiltIn = "CONTENT_TYPE_XML";
}
p("final " + METHOD_CLASS + " __method =");
p("getResource()");
if (pathExpression != null) {
p(".resolve(" + pathExpression + ")");
}
for (Map.Entry<String, JParameter> entry : queryParams.entrySet()) {
String expr = entry.getValue().getName();
JClassType type = entry.getValue().getType().isClassOrInterface();
if (type != null && isQueryParamListType(type)) {
p(
".addQueryParams("
+ wrap(entry.getKey())
+ ", "
+ toIteratedStringExpression(entry.getValue())
+ ")");
} else {
p(
".addQueryParam("
+ wrap(entry.getKey())
+ ", "
+ toStringExpression(entry.getValue().getType(), expr)
+ ")");
}
}
// example: .get()
p("." + restMethod + "();");
// Handle JSONP specific configuration...
JSONP jsonpAnnotation = method.getAnnotation(JSONP.class);
final boolean isJsonp = restMethod.equals(METHOD_JSONP) && jsonpAnnotation != null;
if (isJsonp) {
if (returnRequest
&& !method
.getReturnType()
.getQualifiedSourceName()
.equals(JsonpRequest.class.getName())) {
getLogger()
.log(
ERROR,
"Invalid rest method. JSONP method must have void or JsonpRequest return types: "
+ method.getReadableDeclaration());
throw new UnableToCompleteException();
}
if (jsonpAnnotation.callbackParam().length() > 0) {
p(
"(("
+ JSONP_METHOD_CLASS
+ ")__method).callbackParam("
+ wrap(jsonpAnnotation.callbackParam())
+ ");");
}
if (jsonpAnnotation.failureCallbackParam().length() > 0) {
p(
"(("
+ JSONP_METHOD_CLASS
+ ")__method).failureCallbackParam("
+ wrap(jsonpAnnotation.failureCallbackParam())
+ ");");
}
} else {
if (returnRequest
&& !method.getReturnType().getQualifiedSourceName().equals(Request.class.getName())) {
getLogger()
.log(
ERROR,
"Invalid rest method. Non JSONP method must have void or Request return types: "
+ method.getReadableDeclaration());
throw new UnableToCompleteException();
}
}
// configure the dispatcher
if (options != null && options.dispatcher() != Dispatcher.class) {
// use the dispatcher configured for the method.
p("__method.setDispatcher(" + options.dispatcher().getName() + ".INSTANCE);");
} else {
// use the default dispatcher configured for the service..
p("__method.setDispatcher(this.dispatcher);");
}
// configure the expected statuses..
if (options != null && options.expect().length != 0) {
// Using method level defined expected status
p("__method.expect(" + join(options.expect(), ", ") + ");");
} else if (classOptions != null && classOptions.expect().length != 0) {
// Using class level defined expected status
p("__method.expect(" + join(classOptions.expect(), ", ") + ");");
}
// configure the timeout
if (options != null && options.timeout() >= 0) {
// Using method level defined value
p("__method.timeout(" + options.timeout() + ");");
} else if (classOptions != null && classOptions.timeout() >= 0) {
// Using class level defined value
p("__method.timeout(" + classOptions.timeout() + ");");
}
if (jsonpAnnotation == null) {
Produces producesAnnotation = findAnnotationOnMethodOrEnclosingType(method, Produces.class);
if (producesAnnotation != null) {
p(
"__method.header("
+ RESOURCE_CLASS
+ ".HEADER_ACCEPT, "
+ wrap(producesAnnotation.value()[0])
+ ");");
} else {
// set the default accept header....
if (acceptTypeBuiltIn != null) {
p(
"__method.header("
+ RESOURCE_CLASS
+ ".HEADER_ACCEPT, "
+ RESOURCE_CLASS
+ "."
+ acceptTypeBuiltIn
+ ");");
} else {
p(
"__method.header("
+ RESOURCE_CLASS
+ ".HEADER_ACCEPT, "
+ RESOURCE_CLASS
+ ".CONTENT_TYPE_JSON);");
}
}
Consumes consumesAnnotation = findAnnotationOnMethodOrEnclosingType(method, Consumes.class);
if (consumesAnnotation != null) {
p(
"__method.header("
+ RESOURCE_CLASS
+ ".HEADER_CONTENT_TYPE, "
+ wrap(consumesAnnotation.value()[0])
+ ");");
}
// and set the explicit headers now (could override the accept header)
for (Map.Entry<String, JParameter> entry : headerParams.entrySet()) {
String expr = entry.getValue().getName();
p(
"__method.header("
+ wrap(entry.getKey())
+ ", "
+ toStringExpression(entry.getValue().getType(), expr)
+ ");");
}
}
if (!formParams.isEmpty()) {
p(FORM_POST_CONTENT_CLASS + " __formPostContent = new " + FORM_POST_CONTENT_CLASS + "();");
for (Map.Entry<String, JParameter> entry : formParams.entrySet()) {
p(
"__formPostContent.addParameter("
+ wrap(entry.getKey())
+ ", "
+ toFormStringExpression(entry.getValue(), classStyle)
+ ");");
}
p("__method.form(__formPostContent.getTextContent());");
}
if (contentArg != null) {
if (contentArg.getType() == STRING_TYPE) {
p("__method.text(" + contentArg.getName() + ");");
} else if (contentArg.getType() == JSON_VALUE_TYPE) {
p("__method.json(" + contentArg.getName() + ");");
} else if (contentArg.getType().isClass() != null
&& isOverlayArrayType(contentArg.getType().isClass())) {
p("__method.json(new " + JSON_ARRAY_CLASS + "(" + contentArg.getName() + "));");
} else if (contentArg.getType().isClass() != null
&& contentArg.getType().isClass().isAssignableTo(OVERLAY_VALUE_TYPE)) {
p("__method.json(new " + JSON_OBJECT_CLASS + "(" + contentArg.getName() + "));");
} else if (contentArg.getType() == DOCUMENT_TYPE) {
p("__method.xml(" + contentArg.getName() + ");");
} else {
JClassType contentClass = contentArg.getType().isClass();
if (contentClass == null) {
contentClass = contentArg.getType().isClassOrInterface();
if (!locator.isCollectionType(contentClass)) {
getLogger().log(ERROR, "Content argument must be a class.");
throw new UnableToCompleteException();
}
}
jsonAnnotation = contentArg.getAnnotation(Json.class);
Style style = jsonAnnotation != null ? jsonAnnotation.style() : classStyle;
// example:
// .json(Listings$_Generated_JsonEncoder_$.INSTANCE.encode(arg0)
// )
p(
"__method.json("
+ locator.encodeExpression(contentClass, contentArg.getName(), style)
+ ");");
}
}
List<AnnotationResolver> annotationResolvers = getAnnotationResolvers(context, getLogger());
getLogger()
.log(
TreeLogger.DEBUG,
"found " + annotationResolvers.size() + " additional AnnotationResolvers");
for (AnnotationResolver a : annotationResolvers) {
getLogger()
.log(
TreeLogger.DEBUG,
"("
+ a.getClass().getName()
+ ") resolve `"
+ source.getName()
+ "#"
+ method.getName()
+ "´ ...");
final Map<String, String[]> addDataParams =
a.resolveAnnotation(getLogger(), source, method, restMethod);
if (addDataParams != null) {
for (String s : addDataParams.keySet()) {
final StringBuilder sb = new StringBuilder();
final List<String> classList = Arrays.asList(addDataParams.get(s));
sb.append("[");
for (int i = 0; i < classList.size(); ++i) {
sb.append("\\\"").append(classList.get(i)).append("\\\"");
if ((i + 1) < classList.size()) {
sb.append(",");
}
}
sb.append("]");
getLogger()
.log(TreeLogger.DEBUG, "add call with (\"" + s + "\", \"" + sb.toString() + "\")");
p("__method.addData(\"" + s + "\", \"" + sb.toString() + "\");");
}
}
}
if (acceptTypeBuiltIn != null) {
// TODO: shouldn't we also have a cach in here?
p(returnRequest(returnRequest, isJsonp) + "__method.send(" + callbackArg.getName() + ");");
} else if (isJsonp) {
p(returnRequest(returnRequest, isJsonp)
+ "(("
+ JSONP_METHOD_CLASS
+ ")__method).send(new "
+ ABSTRACT_ASYNC_CALLBACK_CLASS
+ "<"
+ resultType.getParameterizedQualifiedSourceName()
+ ">(("
+ JSONP_METHOD_CLASS
+ ")__method, "
+ callbackArg.getName()
+ ") {")
.i(1);
{
p("protected "
+ resultType.getParameterizedQualifiedSourceName()
+ " parseResult("
+ JSON_VALUE_CLASS
+ " result) throws Exception {")
.i(1);
{
if (resultType.getParameterizedQualifiedSourceName().equals("java.lang.Void")) {
p("return (java.lang.Void) null;");
} else {
p("try {").i(1);
{
if (resultType.isAssignableTo(locator.LIST_TYPE)) {
p("result = new " + JSON_ARRAY_CLASS + "(result.getJavaScriptObject());");
}
jsonAnnotation = method.getAnnotation(Json.class);
Style style = jsonAnnotation != null ? jsonAnnotation.style() : classStyle;
p("return " + locator.decodeExpression(resultType, "result", style) + ";");
}
i(-1).p("} catch (Throwable __e) {").i(1);
{
p(
"throw new "
+ RESPONSE_FORMAT_EXCEPTION_CLASS
+ "(\"Response was NOT a valid JSON document\", __e);");
}
i(-1).p("}");
}
}
i(-1).p("}");
}
i(-1).p("});");
} else {
p("try {").i(1);
{
p(returnRequest(returnRequest, isJsonp)
+ "__method.send(new "
+ ABSTRACT_REQUEST_CALLBACK_CLASS
+ "<"
+ resultType.getParameterizedQualifiedSourceName()
+ ">(__method, "
+ callbackArg.getName()
+ ") {")
.i(1);
{
p("protected "
+ resultType.getParameterizedQualifiedSourceName()
+ " parseResult() throws Exception {")
.i(1);
{
if (resultType.getParameterizedQualifiedSourceName().equals("java.lang.Void")) {
p("return (java.lang.Void) null;");
} else {
p("try {").i(1);
{
jsonAnnotation = method.getAnnotation(Json.class);
Style style = jsonAnnotation != null ? jsonAnnotation.style() : classStyle;
p(
"return "
+ locator.decodeExpression(
resultType,
JSON_PARSER_CLASS + ".parse(__method.getResponse().getText())",
style)
+ ";");
}
i(-1).p("} catch (Throwable __e) {").i(1);
{
p(
"throw new "
+ RESPONSE_FORMAT_EXCEPTION_CLASS
+ "(\"Response was NOT a valid JSON document\", __e);");
}
i(-1).p("}");
}
}
i(-1).p("}");
}
i(-1).p("});");
}
i(-1).p("} catch (" + REQUEST_EXCEPTION_CLASS + " __e) {").i(1);
{
p(callbackArg.getName() + ".onFailure(__method,__e);");
if (returnRequest) {
p("return null;");
}
}
i(-1).p("}");
}
}
i(-1).p("}");
}
private EntityProxyModel getEntityProxyType(JClassType entityProxyType)
throws UnableToCompleteException {
entityProxyType = ModelUtils.ensureBaseType(entityProxyType);
EntityProxyModel toReturn = peers.get(entityProxyType);
if (toReturn == null) {
EntityProxyModel.Builder inProgress = peerBuilders.get(entityProxyType);
if (inProgress != null) {
toReturn = inProgress.peek();
}
}
if (toReturn == null) {
EntityProxyModel.Builder builder = new EntityProxyModel.Builder();
peerBuilders.put(entityProxyType, builder);
// Validate possible super-proxy types first
for (JClassType supertype : entityProxyType.getFlattenedSupertypeHierarchy()) {
List<EntityProxyModel> superTypes = new ArrayList<EntityProxyModel>();
if (supertype != entityProxyType && shouldAttemptProxyValidation(supertype)) {
superTypes.add(getEntityProxyType(supertype));
}
builder.setSuperProxyTypes(superTypes);
}
builder.setQualifiedBinaryName(ModelUtils.getQualifiedBaseBinaryName(entityProxyType));
builder.setQualifiedSourceName(ModelUtils.getQualifiedBaseSourceName(entityProxyType));
if (entityProxyInterface.isAssignableFrom(entityProxyType)) {
builder.setType(Type.ENTITY);
} else if (valueProxyInterface.isAssignableFrom(entityProxyType)) {
builder.setType(Type.VALUE);
} else {
poison(
"The type %s is not assignable to either %s or %s",
entityProxyInterface.getQualifiedSourceName(),
valueProxyInterface.getQualifiedSourceName());
// Cannot continue, since knowing the behavior is crucial
die(poisonedMessage());
}
// Get the server domain object type
ProxyFor proxyFor = entityProxyType.getAnnotation(ProxyFor.class);
ProxyForName proxyForName = entityProxyType.getAnnotation(ProxyForName.class);
JsonRpcProxy jsonRpcProxy = entityProxyType.getAnnotation(JsonRpcProxy.class);
if (proxyFor == null && proxyForName == null && jsonRpcProxy == null) {
poison(
"The %s type does not have a @%s, @%s, or @%s annotation",
entityProxyType.getQualifiedSourceName(),
ProxyFor.class.getSimpleName(),
ProxyForName.class.getSimpleName(),
JsonRpcProxy.class.getSimpleName());
}
// Look at the methods declared on the EntityProxy
List<RequestMethod> requestMethods = new ArrayList<RequestMethod>();
Map<String, JMethod> duplicatePropertyGetters = new HashMap<String, JMethod>();
for (JMethod method : entityProxyType.getInheritableMethods()) {
if (method.getEnclosingType().equals(entityProxyInterface)) {
// Ignore methods on EntityProxy
continue;
}
RequestMethod.Builder methodBuilder = new RequestMethod.Builder();
methodBuilder.setDeclarationMethod(entityProxyType, method);
JType transportedType;
String name = method.getName();
if (JBeanMethod.GET.matches(method)) {
transportedType = method.getReturnType();
String propertyName = JBeanMethod.GET.inferName(method);
JMethod previouslySeen = duplicatePropertyGetters.get(propertyName);
if (previouslySeen == null) {
duplicatePropertyGetters.put(propertyName, method);
} else {
poison(
"Duplicate accessors for property %s: %s() and %s()",
propertyName, previouslySeen.getName(), method.getName());
}
} else if (JBeanMethod.SET.matches(method) || JBeanMethod.SET_BUILDER.matches(method)) {
transportedType = method.getParameters()[0].getType();
} else if (name.equals("stableId") && method.getParameters().length == 0) {
// Ignore any overload of stableId
continue;
} else {
poison("The method %s is neither a getter nor a setter", method.getReadableDeclaration());
continue;
}
validateTransportableType(methodBuilder, transportedType, false);
RequestMethod requestMethod = methodBuilder.build();
requestMethods.add(requestMethod);
}
builder
.setExtraTypes(checkExtraTypes(entityProxyType, false))
.setRequestMethods(requestMethods);
toReturn = builder.build();
peers.put(entityProxyType, toReturn);
peerBuilders.remove(entityProxyType);
}
return toReturn;
}
/**
* Generates the client's asynchronous proxy method.
*
* @param serializableTypeOracle the type oracle
*/
protected void generateProxyMethod(
SourceWriter w,
SerializableTypeOracle serializableTypeOracle,
TypeOracle typeOracle,
JMethod syncMethod,
JMethod asyncMethod) {
w.println();
// Write the method signature
JType asyncReturnType = asyncMethod.getReturnType().getErasedType();
w.print("public ");
w.print(asyncReturnType.getQualifiedSourceName());
w.print(" ");
w.print(asyncMethod.getName() + "(");
boolean needsComma = false;
NameFactory nameFactory = new NameFactory();
JParameter[] asyncParams = asyncMethod.getParameters();
for (int i = 0; i < asyncParams.length; ++i) {
JParameter param = asyncParams[i];
if (needsComma) {
w.print(", ");
} else {
needsComma = true;
}
/*
* Ignoring the AsyncCallback parameter, if any method requires a call to
* SerializationStreamWriter.writeObject we need a try catch block
*/
JType paramType = param.getType();
paramType = paramType.getErasedType();
w.print(paramType.getQualifiedSourceName());
w.print(" ");
String paramName = param.getName();
nameFactory.addName(paramName);
w.print(paramName);
}
w.println(") {");
w.indent();
String helperName = nameFactory.createName("helper");
String helperClassName = RemoteServiceProxy.ServiceHelper.class.getCanonicalName();
w.println(
"%s %s = new %s(\"%s\", \"%s\");",
helperClassName, helperName, helperClassName, getProxySimpleName(), syncMethod.getName());
w.println("try {");
w.indent();
// Write the parameter count followed by the parameter values
JParameter[] syncParams = syncMethod.getParameters();
String streamWriterName = nameFactory.createName("streamWriter");
w.println(
"%s %s = %s.start(REMOTE_SERVICE_INTERFACE_NAME, %s);",
SerializationStreamWriter.class.getSimpleName(),
streamWriterName,
helperName,
syncParams.length);
for (JParameter param : syncParams) {
JType paramType = param.getType().getErasedType();
String typeNameExpression = computeTypeNameExpression(paramType);
assert typeNameExpression != null
: "Could not compute a type name for " + paramType.getQualifiedSourceName();
w.println(streamWriterName + ".writeString(" + typeNameExpression + ");");
}
// Encode all of the arguments to the asynchronous method, but exclude the
// last argument which is the callback instance.
//
for (int i = 0; i < asyncParams.length - 1; ++i) {
JParameter asyncParam = asyncParams[i];
w.print(streamWriterName + ".");
w.print(Shared.getStreamWriteMethodNameFor(asyncParam.getType()));
w.println("(" + asyncParam.getName() + ");");
}
/*
* Depending on the return type for the async method, return a
* RequestBuilder, a Request, or nothing at all.
*/
JParameter callbackParam = asyncParams[asyncParams.length - 1];
JType returnType = syncMethod.getReturnType();
String callbackName = callbackParam.getName();
if (asyncReturnType == JPrimitiveType.VOID) {
w.println(
"%s.finish(%s, ResponseReader.%s);",
helperName, callbackName, getResponseReaderFor(returnType).name());
} else if (asyncReturnType.getQualifiedSourceName().equals(RequestBuilder.class.getName())) {
w.println(
"return %s.finishForRequestBuilder(%s, ResponseReader.%s);",
helperName, callbackName, getResponseReaderFor(returnType).name());
} else if (asyncReturnType.getQualifiedSourceName().equals(Request.class.getName())) {
w.println(
"return %s.finish(%s, ResponseReader.%s);",
helperName, callbackName, getResponseReaderFor(returnType).name());
} else {
// This method should have been caught by RemoteServiceAsyncValidator
throw new RuntimeException(
"Unhandled return type " + asyncReturnType.getQualifiedSourceName());
}
w.outdent();
w.print("} catch (SerializationException ");
String exceptionName = nameFactory.createName("ex");
w.println(exceptionName + ") {");
w.indent();
if (!asyncReturnType.getQualifiedSourceName().equals(RequestBuilder.class.getName())) {
/*
* If the method returns void or Request, signal the serialization error
* immediately. If the method returns RequestBuilder, the error will be
* signaled whenever RequestBuilder.send() is invoked.
*/
w.println(callbackName + ".onFailure(" + exceptionName + ");");
}
if (asyncReturnType.getQualifiedSourceName().equals(RequestBuilder.class.getName())) {
w.println(
"return new "
+ FailingRequestBuilder.class.getName()
+ "("
+ exceptionName
+ ", "
+ callbackName
+ ");");
} else if (asyncReturnType.getQualifiedSourceName().equals(Request.class.getName())) {
w.println("return new " + FailedRequest.class.getName() + "();");
} else {
assert asyncReturnType == JPrimitiveType.VOID;
}
w.outdent();
w.println("}");
w.outdent();
w.println("}");
}
private void createFindMethod(SourceWriter sourceWriter) {
// We create more than one findMethod as the body of one method would be too large. This is the
// int that we
// increment to add to the name
// i.e. findMethod0()
int methodNum = 0;
// This int keeps track of how many methods are generated. When it gets to 200 we create a new
// findMethodX()
// and chain it to the previous.
int methodCount = 0;
sourceWriter.println(
"private GwtBindingMethod findOrCreateMethod(String obj, String methodName){ ");
sourceWriter.indent();
sourceWriter.println("GwtBindingMethod newMethod;");
// dummy first condition, rest are "else if". Keeps us from having conditional logic.
sourceWriter.println("if(false){ }");
for (JClassType type : implementingTypes) {
// close last method, chain it to a new one.
if (methodCount > 200) {
sourceWriter.println("return findOrCreateMethod" + (methodNum) + "(obj, methodName);");
sourceWriter.println("}");
sourceWriter.println(
"private GwtBindingMethod findOrCreateMethod"
+ (methodNum++)
+ "(String obj, String methodName){ ");
sourceWriter.println("GwtBindingMethod newMethod;");
// dummy first condition, rest are "else if". Keeps us from having conditional logic.
sourceWriter.println("if(false){ }");
methodCount = 0;
}
String keyRoot = generateTypeKey(type);
// if(type.isAbstract()){
// System.out.println("abstract");
// continue;
// }
// determine if there are any methods that are bindable before writing out conditional for
// class
JClassType loopType = type;
boolean hasBindableMethods = false;
JClassType eventSourceType = null;
try {
eventSourceType = typeOracle.getType("org.pentaho.ui.xul.XulEventSource");
} catch (NotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
// CHECKSTYLE IGNORE Indentation FOR NEXT 1 LINES
outer:
while (loopType.getSuperclass() != null
&& loopType.getSimpleSourceName().equals("Object") == false
&& loopType.isAssignableTo(eventSourceType)) {
for (JMethod m : loopType.getMethods()) {
if (m.isPublic() && m.getAnnotation(Bindable.class) != null) {
hasBindableMethods = true;
break outer;
}
}
loopType = loopType.getSuperclass();
}
if (hasBindableMethods == false) {
continue;
}
sourceWriter.println("else if(obj.equals(\"" + type.getQualifiedSourceName() + "\")){ ");
try {
loopType = type;
sourceWriter.indent();
// Loop over class heirarchy and generate methods for every object that is declared a
// XulEventSource
while (loopType.getSuperclass() != null
&& loopType.getSimpleSourceName().equals("Object") == false
&& loopType.isAssignableTo(eventSourceType)) {
String superName = generateTypeKey(loopType);
boolean first = true;
for (JMethod m : loopType.getMethods()) {
methodCount++;
if (!m.isPublic() || m.getAnnotation(Bindable.class) == null) {
continue;
}
sourceWriter.println(
(first ? "" : "else ") + "if(methodName.equals(\"" + m.getName() + "\")){ ");
if (first) {
first = false;
}
sourceWriter.indent();
String methodName = m.getName();
// check to see if we've already processed this classes' method. Point to that class
// instead.
if (generatedMethods.contains((superName + "_" + methodName).toLowerCase())
&& type != loopType) {
sourceWriter.println("return findOrCreateMethod(\"" + superName + "\", methodName);");
} else {
// See if it's already been created and cached. If so, return that.
String keyName = (keyRoot + "_" + methodName).toLowerCase();
sourceWriter.println(
"GwtBindingMethod found = wrappedTypes.get(\"" + keyName + "\");");
sourceWriter.println("if(found != null){");
sourceWriter.indent();
sourceWriter.println("return found;");
sourceWriter.outdent();
sourceWriter.println("} else {");
sourceWriter.indent();
// Not cached, create a new instance and put it in the cache.
sourceWriter.println("newMethod = new GwtBindingMethod(){");
sourceWriter.println(
"public Object invoke(Object obj, Object[] args) throws XulException { ");
sourceWriter.indent();
sourceWriter.println("try{");
sourceWriter.println(
loopType.getQualifiedSourceName()
+ " target = ("
+ loopType.getQualifiedSourceName()
+ ") obj;");
JParameter[] params = m.getParameters();
String argList = "";
int pos = 0;
for (JParameter param : params) {
if (pos > 0) {
argList += ", ";
}
argList += "(" + getTypeName(param.getType()) + ") args[" + pos + "]";
pos++;
}
if (isVoidReturn(m.getReturnType())) {
sourceWriter.println("target." + methodName + "(" + argList + ");");
sourceWriter.println("return null;");
} else {
sourceWriter.println(
"return " + boxReturnType(m) + " target." + methodName + "(" + argList + ");");
}
sourceWriter.println(
"}catch(Exception e){ e.printStackTrace(); throw new XulException(\"error with "
+ type.getQualifiedSourceName()
+ "\"+e.getMessage());}");
sourceWriter.println("}");
sourceWriter.outdent();
sourceWriter.println("};");
// Add it to the HashMap cache as type and decendant type if available.
sourceWriter.println("wrappedTypes.put((\"" + keyName + "\"), newMethod);");
if (keyRoot.equals(superName) == false) {
sourceWriter.println("wrappedTypes.put((\"" + keyName + "\"), newMethod);");
}
generatedMethods.add((keyRoot + "_" + methodName).toLowerCase());
generatedMethods.add((superName + "_" + methodName).toLowerCase());
sourceWriter.println("return newMethod;");
sourceWriter.outdent();
sourceWriter.println("}");
}
sourceWriter.outdent();
sourceWriter.println("}");
}
// go up a level in the heirarchy and check again.
loopType = loopType.getSuperclass();
}
sourceWriter.outdent();
sourceWriter.println("}");
} catch (Exception e) {
// record to logger that Map generation threw an exception
logger.log(TreeLogger.ERROR, "PropertyMap ERROR!!!", e);
}
}
sourceWriter.outdent();
// This is the end of the line, if not found return null.
sourceWriter.println("return null;");
sourceWriter.println("}");
}
