Interface DNStateManager<T>

Type Parameters:
T - Type of the object being managed
All Superinterfaces:
StateManager
All Known Implementing Classes:
ReferentialStateManagerImpl, StateManagerImpl

public interface DNStateManager<T> extends StateManager
StateManager for DataNucleus systems for a managed object, extending the basic enhancement contract for a StateManager. Each StateManager manages a single Persistable object. The Persistable object can be embedded/serialised into another managed Persistable object, in which case it will return true from the isEmbedded() method, and will also have ownership information obtainable via ExecutionContext.getOwnerInformationForEmbedded(sm) and ExecutionContext.getOwnerForEmbeddedStateManager(sm).
  • Field Details

    • ORIGINAL_FIELD_VALUE_KEY_PREFIX

      static final String ORIGINAL_FIELD_VALUE_KEY_PREFIX
      Key prefix under which the original value of a field is stored in the entity (NonDurable objects). Set if a member is updated using a setter.
      See Also:
    • MEMBER_VALUE_STORED_PREFIX

      static final String MEMBER_VALUE_STORED_PREFIX
      Key prefix under which we store member (identity) value when just retrieving a FK. Member number is then appended to this prefix.
      See Also:
  • Method Details

    • connect

      void connect(ExecutionContext ec, AbstractClassMetaData cmd)
      Method to (re)connect this StateManager to the specified ExecutionContext and object type.
      Parameters:
      ec - ExecutionContext to connect to
      cmd - Metadata for the persistable class
    • disconnect

      void disconnect()
      Disconnect this StateManager from the ExecutionContext and persistable object.
    • isConnected

      boolean isConnected()
    • initialiseForHollow

      void initialiseForHollow(Object id, FieldValues fv, Class<T> pcClass)
      Initialises a state manager to manage a hollow instance having the given object ID and the given (optional) field values. This constructor is used for creating new instances of existing persistent objects, and consequently shouldn't be used when the StoreManager controls the creation of such objects (such as in an ODBMS).
      Parameters:
      id - the JDO identity of the object.
      fv - the initial field values of the object (optional)
      pcClass - Class of the object that this will manage the state for
    • initialiseForHollowAppId

      @Deprecated void initialiseForHollowAppId(FieldValues fv, Class<T> pcClass)
      Deprecated.
      Remove use of this and use initialiseForHollow
      Initialises a state manager to manage a HOLLOW / P_CLEAN instance having the given FieldValues. This constructor is used for creating new instances of existing persistent objects using application identity, and consequently shouldn't be used when the StoreManager controls the creation of such objects (such as in an ODBMS).
      Parameters:
      fv - the initial field values of the object.
      pcClass - Class of the object that this will manage the state for
    • initialiseForHollowPreConstructed

      void initialiseForHollowPreConstructed(Object id, T pc)
      Initialises a state manager to manage the given hollow instance having the given object ID. Unlike the initialiseForHollow(java.lang.Object, org.datanucleus.store.FieldValues, java.lang.Class<T>) method, this method does not create a new instance and instead takes a pre-constructed instance (such as from an ODBMS).
      Parameters:
      id - the identity of the object.
      pc - the object to be managed.
    • initialiseForPersistentClean

      void initialiseForPersistentClean(Object id, T pc)
      Initialises a state manager to manage the passed persistent instance having the given object ID. Used where we have retrieved a PC object from a datastore directly (not field-by-field), for example on an object datastore. This initialiser will not add StateManagers to all related PCs. This must be done by any calling process. This simply adds StateManager to the specified object and records the id, setting all fields of the object as loaded.
      Parameters:
      id - the identity of the object.
      pc - The object to be managed
    • initialiseForEmbedded

      void initialiseForEmbedded(T pc, boolean copyPc)
      Initialises a state manager to manage the passed persistable instance that will be EMBEDDED/SERIALISED into another persistable object. The instance will not be assigned an identity in the process since it is a SCO.
      Parameters:
      pc - The persistable to manage (see copyPc also)
      copyPc - Whether StateManager should manage a copy of the passed PC or that one
    • initialiseForEmbedded

      void initialiseForEmbedded(Class<T> pcClass)
      Initialises a state manager to manage a persistable instance that will be EMBEDDED/SERIALISED into another persistable object. This will create the (embedded) persistable instance. The instance will not be assigned an identity in the process since it is a SCO.
      Parameters:
      pcClass - Class of the embedded object
    • initialiseForPersistentNew

      void initialiseForPersistentNew(T pc, FieldValues preInsertChanges)
      Initialises a state manager to manage a transient instance that is becoming newly persistent. A new object ID for the instance is obtained from the store manager and the object is inserted in the data store.

      This constructor is used for assigning state managers to existing instances that are transitioning to a persistent state.

      Parameters:
      pc - the instance being make persistent.
      preInsertChanges - Any changes to make before inserting
    • initialiseForTransactionalTransient

      void initialiseForTransactionalTransient(T pc)
      Initialises a state manager to manage a Transactional Transient instance. A new object ID for the instance is obtained from the store manager and the object is inserted in the data store.

      This constructor is used for assigning state managers to Transient instances that are transitioning to a transient clean state.

      Parameters:
      pc - the instance being make persistent.
    • initialiseForDetached

      void initialiseForDetached(T pc, Object id, Object version)
      Initialises StateManager to manage a persistable object in detached state.
      Parameters:
      pc - the detach object.
      id - the identity of the object.
      version - the detached version
    • initialiseForPNewToBeDeleted

      void initialiseForPNewToBeDeleted(T pc)
      Initialises StateManager to manage a persistable object that is not persistent but is about to be deleted.
      Parameters:
      pc - the object to delete
    • initialiseForCachedPC

      void initialiseForCachedPC(CachedPC cachedPC, Object id)
      Initialise StateManager, assigning the specified id to the object. This is used when getting objects out of the L2 Cache, where they have no StateManager assigned, and returning them as associated with a particular ExecutionContext.
      Parameters:
      cachedPC - The cached PC object
      id - Id to assign to the persistable object
    • getClassMetaData

      AbstractClassMetaData getClassMetaData()
      Accessor for the ClassMetaData for this persistable object.
      Returns:
      The ClassMetaData.
    • getExecutionContext

      ExecutionContext getExecutionContext()
    • getStoreManager

      StoreManager getStoreManager()
    • getFetchPlanForClass

      FetchPlanForClass getFetchPlanForClass()
      Accessor for the FetchPlan for this class.
      Returns:
      The FetchPlanForClass to be used on all fetches
    • getObject

      T getObject()
      Accessor for the persistable object being managed.
      Returns:
      the persistable object
    • getObjectAsPrintable

      String getObjectAsPrintable()
      Returns a printable form of the managed object.
      Returns:
      The object reference for the persistable object.
    • getInternalObjectId

      Object getInternalObjectId()
      Accessor for the id of the object being managed.
      Returns:
      The identity of the object
    • getExternalObjectId

      Object getExternalObjectId()
      Return an object id that the user can use.
      Returns:
      the object id
    • getLifecycleState

      LifeCycleState getLifecycleState()
      Accessor for the LifeCycleState of this persistable object.
      Returns:
      the LifeCycleState
    • replaceField

      void replaceField(int fieldNumber, Object value)
      Method to change the value of the specified field. This WILL NOT make the field dirty.
      Parameters:
      fieldNumber - (absolute) field number of the field
      value - The new value.
    • replaceFieldMakeDirty

      void replaceFieldMakeDirty(int fieldNumber, Object value)
      Method to change the value of the specified field. This WILL make the field dirty.
      Parameters:
      fieldNumber - (absolute) field number of the field
      value - The new value.
    • replaceFieldValue

      void replaceFieldValue(int fieldNumber, Object newValue)
      Convenience method to change the value of a field that is assumed loaded. Will mark the object/field as dirty if it isn't previously. Only for use in management of relations.
      Parameters:
      fieldNumber - Number of field
      newValue - The new value
    • replaceFields

      void replaceFields(int[] fieldNumbers, FieldManager fm)
      Method to update the data in the object with the values from the passed FieldManager.
      Parameters:
      fieldNumbers - (absolute) field numbers of the fields to update
      fm - The FieldManager
    • replaceFields

      void replaceFields(int[] fieldNumbers, FieldManager fm, boolean replaceWhenDirty)
      Method to update the data in the object with the values from the passed FieldManager.
      Parameters:
      fieldNumbers - (absolute) field numbers of the fields to update
      fm - The FieldManager
      replaceWhenDirty - Whether to replace these fields if the field is dirty
    • replaceNonLoadedFields

      void replaceNonLoadedFields(int[] fieldNumbers, FieldManager fm)
      Method to update the data in the object with the values from the passed FieldManager. Only non loaded fields are updated.
      Parameters:
      fieldNumbers - (absolute) field numbers of the fields to update
      fm - The FieldManager
    • replaceAllLoadedSCOFieldsWithWrappers

      void replaceAllLoadedSCOFieldsWithWrappers()
      Method to replace all loaded SCO fields with wrappers. If the loaded field already uses a SCO wrapper nothing happens to that field.
    • replaceAllLoadedSCOFieldsWithValues

      void replaceAllLoadedSCOFieldsWithValues()
      Method to replace all loaded (wrapped) SCO fields with unwrapped values. If the loaded field doesnt use a SCO wrapper nothing happens to that field.
    • provideFields

      void provideFields(int[] fieldNumbers, FieldManager fm)
      Method to obtain updated field values from the passed FieldManager.
      Parameters:
      fieldNumbers - The numbers of the fields
      fm - The fieldManager
    • provideField

      Object provideField(int fieldNumber)
      Method to return the current value of the specified field.
      Parameters:
      fieldNumber - (absolute) field number of the field
      Returns:
      The current value
    • setAssociatedValue

      void setAssociatedValue(Object key, Object value)
      Method to set an associated value stored with this object. This is for a situation such as in ORM where this object can have an "external" foreign-key provided by an owning object (e.g 1-N uni relation and this is the element with no knowledge of the owner, so the associated value is the FK value).
      Parameters:
      key - Key for the value
      value - The associated value
    • getAssociatedValue

      Object getAssociatedValue(Object key)
      Accessor for the value of an external field. This is for a situation such as in ORM where this object can have an "external" foreign-key provided by an owning object (e.g 1-N uni relation and this is the element with no knowledge of the owner, so the associated value is the FK value).
      Parameters:
      key - The key for this associated information
      Returns:
      The value stored (if any) against this key
    • containsAssociatedValue

      boolean containsAssociatedValue(Object key)
      Accessor for whether the specified associated value key is present.
      Parameters:
      key - The key
      Returns:
      Whether it is present
    • removeAssociatedValue

      void removeAssociatedValue(Object key)
      Method to remove the associated value with the specified key (if it exists).
      Parameters:
      key - The key
    • getDirtyFieldNumbers

      int[] getDirtyFieldNumbers()
      Accessor for the field numbers of all dirty fields.
      Returns:
      Absolute field numbers of the dirty fields in this instance.
    • getDirtyFieldNames

      String[] getDirtyFieldNames()
      Accessor for the names of the fields that are dirty.
      Returns:
      Names of the dirty fields
    • getDirtyFields

      boolean[] getDirtyFields()
      Creates a copy of the internal dirtyFields array.
      Returns:
      a copy of the internal dirtyFields array.
    • makeDirty

      void makeDirty(int field)
      Marks the given field dirty.
      Parameters:
      field - The no of field to mark as dirty.
    • isEmbedded

      boolean isEmbedded()
      Convenience accessor for whether this StateManager manages an embedded/serialised object.
      Returns:
      Whether the managed object is embedded/serialised.
    • updateOwnerFieldInEmbeddedField

      void updateOwnerFieldInEmbeddedField(int fieldNumber, Object value)
      Method to update the owner field in an embedded field.
      Parameters:
      fieldNumber - The field of this object that is embedded
      value - The value of the field (embedded)
    • setStoringPC

      void setStoringPC()
      Method to set the storing PC flag.
    • unsetStoringPC

      void unsetStoringPC()
      Method to unset the storing PC flag.
    • setInserting

      void setInserting()
    • setInsertingCallbacks

      void setInsertingCallbacks()
    • isFlushedToDatastore

      boolean isFlushedToDatastore()
      Accessor for whether all changes have been written to the datastore.
      Returns:
      Whether the datastore has all changes
    • isFlushedNew

      boolean isFlushedNew()
      Whether this record has been flushed to the datastore in this transaction (i.e called persist() and is in the datastore now). If user has called persist() on it yet not yet persisted then returns false.
      Returns:
      Whether this is flushed new.
    • setFlushedNew

      void setFlushedNew(boolean flag)
    • flush

      void flush()
      Method to flush all changes to the datastore.
    • setFlushing

      void setFlushing(boolean flushing)
    • markAsFlushed

      void markAsFlushed()
      Method to notify the StateManager that the object has now been flushed to the datastore. This is performed when handling inserts or deletes in a batch external to StateManager.
    • locate

      void locate()
      Method to locate that the object exists in the datastore.
      Throws:
      NucleusObjectNotFoundException - if not present
    • isWaitingToBeFlushedToDatastore

      boolean isWaitingToBeFlushedToDatastore()
      Tests whether this object is new yet waiting to be flushed to the datastore.
      Returns:
      true if this instance is waiting to be flushed
    • isInserting

      boolean isInserting()
      Tests whether this object is being inserted.
      Returns:
      true if this instance is inserting.
    • isDeleting

      boolean isDeleting()
      Tests whether this object is being deleted.
      Returns:
      true if this instance is being deleted.
    • becomingDeleted

      boolean becomingDeleted()
      Whether this object is moving to a deleted state.
      Returns:
      Whether the object will be moved into a deleted state during this operation
    • isDeleted

      boolean isDeleted()
      Tests whether this object has been deleted. Instances that have been deleted in the current transaction return true. Transient instances return false.
      Returns:
      true if this instance was deleted in the current transaction.
    • isDetaching

      boolean isDetaching()
      Tests whether this object is in the process of being detached.
      Returns:
      true if this instance is being detached.
    • loadFieldValues

      void loadFieldValues(FieldValues fv)
      Convenience method to load the passed field values. Loads the fields using any required fetch plan and calls postLoad as appropriate.
      Parameters:
      fv - Field Values to load (including any fetch plan to use when loading)
    • getReferencedPC

      T getReferencedPC()
      Accessor for the referenced PC object when we are attaching or detaching. When attaching and this is the detached object this returns the newly attached object. When attaching and this is the newly attached object this returns the detached object. When detaching and this is the newly detached object this returns the attached object. When detaching and this is the attached object this returns the newly detached object.
      Returns:
      The referenced object (or null).
    • loadField

      void loadField(int fieldNumber)
      Convenience method to load the specified field if not loaded.
      Parameters:
      fieldNumber - Absolute field number
    • loadStoredField

      boolean loadStoredField(int fieldNumber)
      Convenience method to load the specified field from the stored associated value cache if available.
      Parameters:
      fieldNumber - Absolute field number
      Returns:
      whether it was loaded from stored cache values
    • storeFieldValue

      void storeFieldValue(int fieldNumber, Object value)
      Method to store the value for the specified field. This is for use with fields that are of type Persistable, and we stored the "id" of the related object in case they need loading later rather than instantiating now.
      Parameters:
      fieldNumber - Absolute field number
      value - The value to store (FK "id")
    • loadFieldsInFetchPlan

      void loadFieldsInFetchPlan(FetchPlanState state)
      Method to load all unloaded fields in the FetchPlan. Recurses through the FetchPlan objects and loads fields of sub-objects where needed.
      Parameters:
      state - The FetchPlan state
    • loadFieldFromDatastore

      void loadFieldFromDatastore(int fieldNumber)
      Convenience method to load a field from the datastore. Used in attaching fields and checking their old values (so we don't want any postLoad method being called). TODO Merge this with one of the loadXXXFields methods.
      Parameters:
      fieldNumber - The field number.
    • loadUnloadedFieldsInFetchPlan

      void loadUnloadedFieldsInFetchPlan()
      Loads (from the database) all unloaded fields that are in the current FetchPlan.
    • loadUnloadedFieldsOfClassInFetchPlan

      void loadUnloadedFieldsOfClassInFetchPlan(FetchPlan fetchPlan)
      Loads (from the database) all unloaded fields of the managed class that are in the specified FetchPlan.
      Parameters:
      fetchPlan - The FetchPlan
    • loadUnloadedRelationFields

      void loadUnloadedRelationFields()
      Loads (from the database) all unloaded fields that store relations.
    • loadUnloadedFields

      void loadUnloadedFields()
      Fetch from the database all fields that are not currently loaded regardless of whether they are in the current fetch group or not. Called by lifecycle transitions.
    • unloadField

      void unloadField(int fieldNumber)
      Mark the specified field as not loaded so that it will be reloaded on next access.
      Parameters:
      fieldNumber - Absolute field number
      Throws:
      NucleusUserException - if the object managed by this StateManager is embedded
    • unloadNonFetchPlanFields

      void unloadNonFetchPlanFields()
      Method that will unload all fields that are not in the FetchPlan.
    • refreshLoadedFields

      void refreshLoadedFields()
      Refreshes from the database all fields currently loaded. Called by life-cycle transitions when making transactional or reading fields.
    • refreshFieldsInFetchPlan

      void refreshFieldsInFetchPlan()
      Refreshes from the database all fields in fetch plan. Called by life-cycle transitions when the object undergoes a "transitionRefresh".
    • clearNonPrimaryKeyFields

      void clearNonPrimaryKeyFields()
      Method to clear all fields that are not part of the primary key of the object.
    • restoreFields

      void restoreFields()
      Method to restore all fields of the object from the saved state, in the case of rollback.
    • saveFields

      void saveFields()
      Method to save all fields of the object to a saved state, in case of later rollback.
    • clearSavedFields

      void clearSavedFields()
      Method to clear all saved fields on the object from the saved state, e.g at commit.
    • clearFields

      void clearFields()
      Method to clear all fields of the object.
    • registerTransactional

      void registerTransactional()
      Registers the pc class in the cache
    • isRestoreValues

      boolean isRestoreValues()
      Accessor for the Restore Values flag
      Returns:
      Whether to restore values
    • clearLoadedFlags

      void clearLoadedFlags()
      Method to clear all loaded flags on the object.
    • getLoadedFields

      boolean[] getLoadedFields()
      Accessor for the loaded flags for all fields.
      Returns:
      Array of loaded flags for all fields
    • getLoadedFieldNumbers

      int[] getLoadedFieldNumbers()
      Accessor for the field numbers of all loaded fields.
      Returns:
      Absolute field numbers of the loaded fields in this instance.
    • getLoadedFieldNames

      String[] getLoadedFieldNames()
      Accessor for the names of the fields that are loaded.
      Returns:
      Names of the loaded fields
    • isLoaded

      boolean isLoaded(int fieldNumber)
      Returns the loaded setting for the field of the managed object. Refer to the javadoc of isLoaded(Persistable, int);
      Parameters:
      fieldNumber - the absolute field number
      Returns:
      always returns true (this implementation)
    • getAllFieldsLoaded

      boolean getAllFieldsLoaded()
      Returns whether all fields are loaded.
      Returns:
      Returns true if all fields are loaded.
    • isFieldLoaded

      boolean isFieldLoaded(int fieldNumber)
      Accessor for whether a field is currently loaded. Just returns the status, unlike "isLoaded" which also loads it if not.
      Parameters:
      fieldNumber - The (absolute) field number
      Returns:
      Whether it is loaded
    • updateFieldAfterInsert

      void updateFieldAfterInsert(Object pc, int fieldNumber)
      Marks the given field dirty for issuing an update after the insert.
      Parameters:
      pc - The Persistable object
      fieldNumber - The no of field to mark as dirty.
    • setPostStoreNewObjectId

      void setPostStoreNewObjectId(Object id)
      Method to allow the setting of the id of the PC object. This is used when it is obtained after persisting the object to the datastore. In the case of RDBMS, this may be via auto-increment, or in the case of ODBMS this may be an accessor for the id after storing.
      Parameters:
      id - the id received from the datastore. May be an OID, or the key value for an OID, or an application id.
    • replaceManagedPC

      void replaceManagedPC(T pc)
      Method to swap the managed object for the supplied object. This is of particular use for object datastores where the datastore is responsible for creating the in-memory object and where we have a temporary object that we want to swap for the datastore generated object. Makes no change to what fields are loaded/dirty etc, just swaps the managed object.
      Parameters:
      pc - The persistable object to use
    • setTransactionalVersion

      void setTransactionalVersion(Object nextVersion)
      Sets the value for the version column in a transaction not yet committed
      Parameters:
      nextVersion - version to use
    • getTransactionalVersion

      Object getTransactionalVersion()
      Return the object representing the transactional version of the managed object.
      Returns:
      the object representing the version of the calling instance
    • setVersion

      void setVersion(Object version)
      Method to set the current version of the managed object.
      Parameters:
      version - The version
    • getVersion

      Object getVersion()
      Method to return the current version of the managed object.
      Returns:
      The version
    • isVersionLoaded

      boolean isVersionLoaded()
      Method to return if the version is loaded. If the class represented is not versioned then returns true.
      Returns:
      Whether it is loaded.
    • evictFromTransaction

      void evictFromTransaction()
    • enlistInTransaction

      void enlistInTransaction()
    • makeTransactional

      void makeTransactional()
      Method to make the managed object transactional.
    • makeNontransactional

      void makeNontransactional()
      Method to make the managed object nontransactional.
    • makeTransient

      void makeTransient(FetchPlanState state)
      Method to make the managed object transient.
      Parameters:
      state - Object containing the state of any fetch plan processing
    • makeTransientForReachability

      void makeTransientForReachability()
      Make the managed object transient due to reachability (at commit) finding it not needing to be persisted.
    • makePersistent

      void makePersistent()
      Method to make the managed object persistent.
    • makePersistentTransactionalTransient

      void makePersistentTransactionalTransient()
      Method to make Transactional Transient instances persistent
    • deletePersistent

      void deletePersistent()
      Method to delete the object from persistence.
    • attachCopy

      T attachCopy(T detachedPC, boolean embedded)
      Method to attach to this the detached persistable instance
      Parameters:
      detachedPC - the detached persistable instance to be attached
      embedded - Whether it is embedded
      Returns:
      The attached copy
    • attach

      void attach(boolean embedded)
      Method to attach the object being managed.
      Parameters:
      embedded - Whether it is embedded
    • attach

      void attach(T detachedPC)
      Method to attach the provided detached object into the managed instance.
      Parameters:
      detachedPC - Detached object
    • detachCopy

      T detachCopy(FetchPlanState state)
      Method to make detached copy of this instance
      Parameters:
      state - State for the detachment process
      Returns:
      the detached persistable instance
    • detach

      void detach(FetchPlanState state)
      Method to detach the managed object.
      Parameters:
      state - State for the detachment process
    • validate

      void validate()
      Validates whether the persistence capable instance exists in the datastore. If the instance does not exist in the datastore, this method will fail raising a NucleusObjectNotFoundException.
    • markForInheritanceValidation

      void markForInheritanceValidation()
      Mark the state manager as needing to validate the inheritance of the managed object existence before loading fields.
    • evict

      void evict()
      Method to change the object state to evicted.
    • refresh

      void refresh()
      Method to refresh the values of the currently loaded fields in the managed object.
    • retrieve

      void retrieve(boolean fgOnly)
      Method to retrieve the fields for this object.
      Parameters:
      fgOnly - Whether to retrieve just the current fetch plan fields
    • preBegin

      void preBegin(Transaction tx)
      Convenience interceptor to allow operations to be performed before the begin is performed.
      Parameters:
      tx - The transaction
    • postCommit

      void postCommit(Transaction tx)
      Convenience interceptor to allow operations to be performed after the commit is performed but before returning control to the application.
      Parameters:
      tx - The transaction
    • preRollback

      void preRollback(Transaction tx)
      Convenience interceptor to allow operations to be performed before any rollback is performed.
      Parameters:
      tx - The transaction
    • resetDetachState

      void resetDetachState()
      Convenience method to reset the detached state in the current object.
    • retrieveDetachState

      void retrieveDetachState(DNStateManager sm)
      Convenience method to retrieve the detach state from the passed StateManager's managed object
      Parameters:
      sm - StateManager
    • checkInheritance

      @Deprecated void checkInheritance(FieldValues fv)
      Deprecated.
      Dont use this, to be removed
      Look to the database to determine which class this object is. This parameter is a hint. Set false, if it's already determined the correct pcClass for this pc "object" in a certain level in the hierarchy. Set to true and it will look to the database. TODO This is only called by some outdated code in LDAPUtils; remove it when that is fixed
      Parameters:
      fv - the initial field values of the object.
    • markFieldsAsLoaded

      void markFieldsAsLoaded(int[] fieldNumbers)
      Convenience method to mark all fields as "loaded". NOTE: This is a convenience mutator only to be used when you know what you are doing. Currently only used by the XML plugin.
      Parameters:
      fieldNumbers - The field numbers to mark as loaded