/**
* Tries to find a reference for an injected {@link AutoBound} data binder.
*
* @return the data binder reference or null if not found.
*/
private static DataBinderRef lookupAutoBoundBinder(final InjectableInstance<?> inst) {
Statement dataBinderRef = null;
MetaClass dataModelType = null;
InjectUtil.BeanMetric beanMetric =
InjectUtil.getFilteredBeanMetric(
inst.getInjectionContext(), inst.getInjector().getInjectedType(), AutoBound.class);
final Collection<Object> allInjectors = beanMetric.getAllInjectors();
if (allInjectors.size() > 1) {
throw new GenerationException(
"Multiple @AutoBound data binders injected in " + inst.getEnclosingType());
} else if (allInjectors.size() == 1) {
final Object injectorElement = allInjectors.iterator().next();
if (injectorElement instanceof MetaConstructor || injectorElement instanceof MetaMethod) {
final MetaParameter mp = beanMetric.getConsolidatedMetaParameters().iterator().next();
assertTypeIsDataBinder(mp.getType());
dataModelType = (MetaClass) mp.getType().getParameterizedType().getTypeParameters()[0];
dataBinderRef = inst.getInjectionContext().getInlineBeanReference(mp);
inst.ensureMemberExposed();
} else {
final MetaField field = (MetaField) allInjectors.iterator().next();
assertTypeIsDataBinder(field.getType());
dataModelType = (MetaClass) field.getType().getParameterizedType().getTypeParameters()[0];
dataBinderRef =
Stmt.invokeStatic(
inst.getInjectionContext().getProcessingContext().getBootstrapClass(),
PrivateAccessUtil.getPrivateFieldInjectorName(field),
Variable.get(inst.getInjector().getInstanceVarName()));
inst.getInjectionContext().addExposedField(field, PrivateAccessType.Both);
}
} else {
final MetaClass declaringClass = inst.getInjector().getInjectedType();
for (final MetaField field : declaringClass.getFields()) {
if (field.isAnnotationPresent(AutoBound.class)) {
assertTypeIsDataBinder(field.getType());
dataModelType = (MetaClass) field.getType().getParameterizedType().getTypeParameters()[0];
dataBinderRef =
Stmt.invokeStatic(
inst.getInjectionContext().getProcessingContext().getBootstrapClass(),
PrivateAccessUtil.getPrivateFieldInjectorName(field),
Variable.get(inst.getInjector().getInstanceVarName()));
inst.getInjectionContext().addExposedField(field, PrivateAccessType.Both);
break;
}
}
}
return (dataBinderRef != null) ? new DataBinderRef(dataModelType, dataBinderRef) : null;
}
/**
* Tries to find a data binder reference for an injected {@link Model}.
*
* @param inst the injectable instance
* @return the data binder reference or null if not found.
*/
private static DataBinderRef lookupBinderForModel(final InjectableInstance<?> inst) {
Statement dataBinderRef;
MetaClass dataModelType;
InjectUtil.BeanMetric beanMetric =
InjectUtil.getFilteredBeanMetric(
inst.getInjectionContext(), inst.getInjector().getInjectedType(), Model.class);
if (!beanMetric.getAllInjectors().isEmpty()) {
final Collection<Object> allInjectors = beanMetric.getAllInjectors();
if (allInjectors.size() > 1) {
throw new GenerationException("Multiple @Models injected in " + inst.getEnclosingType());
} else if (allInjectors.size() == 1) {
final Object injectorElement = allInjectors.iterator().next();
if (injectorElement instanceof MetaConstructor || injectorElement instanceof MetaMethod) {
final MetaParameter mp = beanMetric.getConsolidatedMetaParameters().iterator().next();
dataModelType = mp.getType();
assertTypeIsBindable(dataModelType);
dataBinderRef = inst.getTransientValue(TRANSIENT_BINDER_VALUE, DataBinder.class);
inst.ensureMemberExposed();
} else {
final MetaField field = (MetaField) allInjectors.iterator().next();
dataModelType = field.getType();
assertTypeIsBindable(dataModelType);
dataBinderRef = inst.getTransientValue(TRANSIENT_BINDER_VALUE, DataBinder.class);
inst.getInjectionContext().addExposedField(field, PrivateAccessType.Both);
}
return new DataBinderRef(dataModelType, dataBinderRef);
}
} else {
List<MetaField> modelFields =
inst.getInjector().getInjectedType().getFieldsAnnotatedWith(Model.class);
if (!modelFields.isEmpty()) {
throw new GenerationException(
"Found one or more fields annotated with @Model but missing @Inject "
+ modelFields.toString());
}
List<MetaParameter> modelParameters =
inst.getInjector().getInjectedType().getParametersAnnotatedWith(Model.class);
if (!modelParameters.isEmpty()) {
throw new GenerationException(
"Found one or more constructor or method parameters annotated with @Model but missing @Inject "
+ modelParameters.toString());
}
}
return null;
}
public ProxyInjector(final IOCProcessingContext context,
final MetaClass proxiedType,
final QualifyingMetadata metadata) {
Assert.notNull(proxiedType);
Assert.notNull(metadata);
this.proxiedType = proxiedType;
this.varName = InjectUtil.getNewInjectorName() + "_proxy";
this.qualifyingMetadata = AbstractInjector.getMetadataWithAny(metadata);
final String proxyClassName = proxiedType.getName() + "_" + varName;
this.closeStatements = new ArrayList<Statement>();
this.proxyClass = ProxyMaker.makeProxy(proxyClassName, proxiedType, context.isGwtTarget() ? "jsni" : "reflection");
this.proxyClass.setStatic(true);
this.proxyClass.setScope(Scope.Package);
context.getBootstrapClass()
.addInnerClass(new InnerClass(proxyClass));
}
@Override
public Statement getBeanInstance(final InjectableInstance injectableInstance) {
final MetaClass type;
final MetaParameterizedType pType;
switch (injectableInstance.getTaskType()) {
case Type:
return null;
case PrivateField:
case Field:
final MetaField field = injectableInstance.getField();
type = field.getType();
pType = type.getParameterizedType();
break;
case Parameter:
final MetaParameter parm = injectableInstance.getParm();
type = parm.getType();
pType = type.getParameterizedType();
break;
default:
throw new RuntimeException("illegal task type: " + injectableInstance.getEnclosingType());
}
final MetaType[] typeArgs = pType.getTypeParameters();
final MetaClass[] typeArgsClasses = new MetaClass[typeArgs.length];
for (int i = 0; i < typeArgs.length; i++) {
final MetaType argType = typeArgs[i];
if (argType instanceof MetaClass) {
typeArgsClasses[i] = (MetaClass) argType;
} else if (argType instanceof MetaParameterizedType) {
typeArgsClasses[i] = (MetaClass) ((MetaParameterizedType) argType).getRawType();
}
}
final Annotation[] qualifiers = injectableInstance.getQualifiers();
final BlockBuilder<?> block =
injectableInstance.getInjectionContext().getProcessingContext().getBlockBuilder();
final MetaClass providerCreationalCallback =
MetaClassFactory.parameterizedAs(
CreationalCallback.class,
MetaClassFactory.typeParametersOf(providerInjector.getInjectedType()));
final String varName =
InjectUtil.getVarNameFromType(
providerInjector.getConcreteInjectedType(), injectableInstance);
final Statement valueRef;
if (providerInjector.isSingleton() && providerInjector.isRendered()) {
valueRef =
Stmt.loadVariable("beanInstance")
.invoke("provide", typeArgsClasses, qualifiers.length != 0 ? qualifiers : null);
} else {
valueRef = Stmt.load(null);
}
block.append(
Stmt.declareFinalVariable(
varName,
providerCreationalCallback,
Stmt.newObject(providerCreationalCallback)
.extend()
.publicOverridesMethod(
"callback", Parameter.of(providerInjector.getInjectedType(), "beanInstance"))
.append(
Stmt.loadVariable(InjectUtil.getVarNameFromType(type, injectableInstance))
.invoke("callback", valueRef))
.append(Stmt.loadVariable("async").invoke("finish", Refs.get("this")))
.finish()
.publicOverridesMethod("toString")
.append(
Stmt.load(providerInjector.getInjectedType()).invoke("getName").returnValue())
.finish()
.finish()));
block.append(Stmt.loadVariable("async").invoke("wait", Refs.get(varName)));
block.append(
Stmt.loadVariable(providerInjector.getCreationalCallbackVarName())
.invoke("getInstance", Refs.get(varName), Refs.get("context")));
return null;
}