Examples with ModuleInstance org.qi4j.runtime.structure.ModuleInstance used on opensource projects

Example 1 with ModuleInstance

use of org.qi4j.runtime.structure.ModuleInstance in project qi4j-sdk by Qi4j.

the class UnitOfWorkInstance method get.

public <T> T get(EntityReference identity, ModuleUnitOfWork uow, Iterable<ModelModule<EntityModel>> potentialModels, Class<T> mixinType) throws EntityTypeNotFoundException, NoSuchEntityException {
    checkOpen();
    EntityInstance entityInstance = instanceCache.get(identity);
    if (entityInstance == null) {
        // Not yet in cache
        // Check if this is a root UoW, or if no parent UoW knows about this entity
        EntityState entityState = null;
        EntityModel model = null;
        ModuleInstance module = null;
        // Figure out what EntityStore to use
        for (ModelModule<EntityModel> potentialModel : potentialModels) {
            EntityStore store = potentialModel.module().entityStore();
            EntityStoreUnitOfWork storeUow = getEntityStoreUnitOfWork(store, potentialModel.module());
            try {
                entityState = storeUow.entityStateOf(identity);
            } catch (EntityNotFoundException e) {
                continue;
            }
            // Get the selected model
            model = (EntityModel) entityState.entityDescriptor();
            module = potentialModel.module();
        }
        // Check if model was found
        if (model == null) {
            // Check if state was found
            if (entityState == null) {
                throw new NoSuchEntityException(identity);
            } else {
                throw new EntityTypeNotFoundException(mixinType.getName());
            }
        }
        // Create instance
        entityInstance = new EntityInstance(uow, module, model, entityState);
        instanceCache.put(identity, entityInstance);
    } else {
        // Check if it has been removed
        if (entityInstance.status() == EntityStatus.REMOVED) {
            throw new NoSuchEntityException(identity);
        }
    }
    return entityInstance.proxy();
}