@Override
public void handle(StateContext state, SubCollectionReadCollectionContext ctx) {
String subCollection = ctx.term().getText();
EntityDictionary dictionary = state.getRequestScope().getDictionary();
try {
Set<PersistentResource> collection = resource.getRelation(subCollection); // Check if exists.
String entityName =
dictionary.getBinding(
dictionary.getParameterizedType(resource.getObject(), subCollection));
Class<?> entityClass = dictionary.getBinding(entityName);
if (entityClass == null) {
throw new IllegalArgumentException("Unknown type " + entityName);
}
final BaseState nextState;
if (collection instanceof SingleElementSet) {
PersistentResource record = collection.iterator().next();
nextState = new RecordTerminalState(subCollection, record);
} else {
nextState =
new CollectionTerminalState(
entityClass, Optional.of(resource), Optional.of(subCollection));
}
state.setState(nextState);
} catch (InvalidAttributeException e) {
throw new InvalidCollectionException(subCollection);
}
}
@Override
public void handle(StateContext state, SubCollectionSubCollectionContext ctx) {
String id = ctx.entity().id().getText();
String subCollection = ctx.entity().term().getText();
try {
state.setState(new RecordState(resource.getRelation(subCollection, id)));
} catch (InvalidAttributeException e) {
throw new InvalidCollectionException(subCollection);
}
}
@Override
public void handle(StateContext state, SubCollectionToOneContext ctx) {
String subCollection = ctx.term().getText();
Set<PersistentResource> single = resource.getRelation(subCollection);
if (single instanceof SingleElementSet) {
state.setState(new RecordState(single.iterator().next()));
} else {
throw new InvalidCollectionException(
"Expected single element but found list for '%s'", subCollection);
}
}
@Override
public void handle(StateContext state, SubCollectionReadEntityContext ctx) {
String id = ctx.entity().id().getText();
String subCollection = ctx.entity().term().getText();
try {
PersistentResource nextRecord = resource.getRelation(subCollection, id);
state.setState(new RecordTerminalState(subCollection, nextRecord));
} catch (InvalidAttributeException e) {
throw new InvalidCollectionException(subCollection);
}
}
@Override
public void handle(StateContext state, SubCollectionRelationshipContext ctx) {
String id = ctx.entity().id().getText();
String subCollection = ctx.entity().term().getText();
User user = state.getRequestScope().getUser();
PersistentResource childRecord;
try {
childRecord = resource.getRelation(subCollection, id);
} catch (InvalidAttributeException e) {
throw new InvalidCollectionException(subCollection);
}
String relationName = ctx.relationship().term().getText();
try {
childRecord.getRelation(relationName);
} catch (InvalidAttributeException e) {
throw new InvalidCollectionException(relationName);
}
state.setState(new RelationshipTerminalState(childRecord, relationName));
}