private static String toMessage(
NodeInitializerContext context,
ModelSchemaStore schemaStore,
Iterable<ModelType<?>> scalarTypes,
Iterable<ModelType<?>> constructableTypes) {
Optional<ModelProperty<?>> modelPropertyOptional = context.getModelProperty();
StringBuffer s = new StringBuffer();
if (modelPropertyOptional.isPresent()) {
s.append(
String.format(
"A model element of type: '%s' can not be constructed.%n",
context.getContainingType().get().getName()));
ModelProperty<?> modelProperty = modelPropertyOptional.get();
if (isManagedCollection(modelProperty.getType())) {
s.append(
String.format(
"Its property '%s %s' is not a valid managed collection%n",
modelProperty.getType().getName(), modelProperty.getName()));
ModelCollectionSchema<?, ?> schema =
(ModelCollectionSchema) schemaStore.getSchema(modelProperty.getType());
s.append(
String.format("A managed collection can not contain '%s's%n", schema.getElementType()));
appendManagedCollections(s, 1, constructableTypes);
} else if (isScalarCollection(modelProperty.getType(), schemaStore)) {
ModelCollectionSchema<?, ?> schema =
(ModelCollectionSchema) schemaStore.getSchema(modelProperty.getType());
s.append(
String.format(
"Its property '%s %s' is not a valid scalar collection%n",
modelProperty.getType().getName(), modelProperty.getName()));
s.append(
String.format("A scalar collection can not contain '%s's%n", schema.getElementType()));
s.append(explainScalarCollections(scalarTypes));
} else {
s.append(
String.format(
"Its property '%s %s' can not be constructed%n",
modelProperty.getType().getName(), modelProperty.getName()));
s.append(String.format("It must be one of:%n"));
s.append(String.format(" - %s%n", MANAGED_TYPE_DESCRIPTION));
s.append(" - A managed collection. ");
appendManagedCollections(s, 1, constructableTypes);
s.append(
String.format(
"%n - A scalar collection. %s%n - %s",
explainScalarCollections(scalarTypes), UNMANAGED_PROPERTY_DESCRIPTION));
maybeAppendConstructables(s, constructableTypes, 1);
}
} else {
s.append(
String.format(
"A model element of type: '%s' can not be constructed.%n",
context.getModelType().getName()));
s.append(String.format("It must be one of:%n"));
s.append(String.format(" - %s", MANAGED_TYPE_DESCRIPTION));
maybeAppendConstructables(s, constructableTypes, 1);
}
return s.toString();
}
@Override
protected <T, E> NodeInitializer extractNodeInitializer(
ModelCollectionSchema<T, E> schema, NodeInitializerRegistry nodeInitializerRegistry) {
ModelType<T> type = schema.getType();
Class<? super T> rawClass = type.getRawClass();
ModelType<? super T> rawCollectionType = ModelType.of(rawClass);
if (TYPES.contains(rawCollectionType)) {
if (schema.getType().getRawClass() == List.class) {
return new ProjectionOnlyNodeInitializer(
ScalarCollectionModelProjection.get(
ModelTypes.list(schema.getElementType()),
new ListViewFactory<E>(schema.getElementType())));
} else {
return new ProjectionOnlyNodeInitializer(
ScalarCollectionModelProjection.get(
ModelTypes.set(schema.getElementType()),
new SetViewFactory<E>(schema.getElementType())));
}
}
return null;
}