/**
* Generates views based on annotations found in a repository class. If the repository class
* extends org.ektorp.support.CouchDbRepositorySupport its handled type will also examined for
* annotations eligible for view generation.
*
* @param repository
* @return a Map with generated views.
*/
public Map<String, DesignDocument.View> generateViews(final Object repository) {
final Map<String, DesignDocument.View> views = new HashMap<String, DesignDocument.View>();
final Class<?> repositoryClass = repository.getClass();
final Class<?> handledType =
repository instanceof CouchDbRepositorySupport<?>
? ((CouchDbRepositorySupport<?>) repository).getHandledType()
: null;
createDeclaredViews(views, repositoryClass);
eachMethod(
repositoryClass,
new Predicate<Method>() {
public boolean apply(Method input) {
if (hasAnnotation(input, GenerateView.class)) {
generateView(views, input, handledType);
}
return false;
}
});
if (handledType != null) {
views.putAll(generateViewsFromPersistentType(handledType));
}
return views;
}
private void generateView(
Map<String, DesignDocument.View> views, Method me, Class<?> handledType) {
String name = me.getName();
if (!name.startsWith("findBy") && !name.equals("getAll")) {
throw new ViewGenerationException(
String.format(
"The method: %s in %s annotated with GenerateView does not conform to the naming convention of 'findByXxxx'",
name, me.getDeclaringClass()));
}
Class<?> type = resolveReturnType(me);
if (type == null) {
if (handledType != null) {
type = handledType;
} else {
throw new ViewGenerationException(
"Could not resolve return type for method: %s in %s",
me.getName(), me.getDeclaringClass());
}
}
String typeDiscriminator = resolveTypeDiscriminator(type);
if (name.equals("getAll")) {
if (typeDiscriminator.length() < 1) {
throw new ViewGenerationException(
String.format(
"Cannot generate 'all' view for %s. No type discriminator could be resolved. Try annotate unique field(s) with @TypeDiscriminator",
type.getDeclaringClass()));
}
views.put("all", generateAllView(typeDiscriminator));
return;
}
String finderName = name.substring(6);
String fieldName = resolveFieldName(me, finderName);
Method getter = findMethod(type, "get" + fieldName);
if (getter == null) {
// try pluralis
fieldName += "s";
getter = findMethod(type, "get" + fieldName);
}
if (getter == null) {
throw new ViewGenerationException(
"Could not generate view for method %s. No get method found for property %s in %s",
name, name.substring(6), type);
}
fieldName = firstCharToLowerCase(fieldName);
DesignDocument.View view;
if (isIterable(getter.getReturnType())) {
view = generateFindByIterableView(fieldName, typeDiscriminator);
} else {
view = generateFindByView(fieldName, typeDiscriminator);
}
views.put("by_" + firstCharToLowerCase(finderName), view);
}
private void addView(
Map<String, DesignDocument.View> views, View input, Class<?> repositoryClass) {
if (input.file().length() > 0) {
views.put(input.name(), loadViewFromFile(views, input, repositoryClass));
} else {
views.put(input.name(), DesignDocument.View.of(input));
}
}
private void generateSetBasedDocRefView(
Map<String, org.ektorp.support.DesignDocument.View> views,
Member me,
DocumentReferences referenceMetaData) {
String fieldName = firstCharToLowerCase(me.getName());
String orderBy = referenceMetaData.orderBy();
String backRef = referenceMetaData.backReference();
if (backRef.length() == 0) {
throw new ViewGenerationException(
String.format(
"The DocumentReferences annotation in %s must specify a backReference",
me.getDeclaringClass()));
}
String viewName = NameConventions.backReferenceViewName(fieldName);
String typeDiscriminator = resolveTypeDiscriminatorForBackReference(me);
if (orderBy.length() > 0) {
views.put(
viewName,
generateDocRefsAsSetWithOrderByView(backRef, fieldName, orderBy, typeDiscriminator));
} else {
views.put(viewName, generateDocRefsAsSetView(backRef, fieldName, typeDiscriminator));
}
}