javax.jdo.spi

Interface StateManager

public interface StateManager

This interface is the point of contact between managed instances of PersistenceCapable classes and the JDO implementation. It contains the methods used by PersistenceCapable instances to delegate behavior to the JDO implementation.

Each managed PersistenceCapable instance contains a reference to a StateManager. A StateManager might manage one or multiple instances of PersistenceCapable instances, at the choice of the implementation.

Version:

2.0

Method Summary

Modifier and Type	Method and Description
boolean	getBooleanField(PersistenceCapable pc, int field, boolean currentValue) Return the value for the field.
byte	getByteField(PersistenceCapable pc, int field, byte currentValue) Return the value for the field.
char	getCharField(PersistenceCapable pc, int field, char currentValue) Return the value for the field.
double	getDoubleField(PersistenceCapable pc, int field, double currentValue) Return the value for the field.
float	getFloatField(PersistenceCapable pc, int field, float currentValue) Return the value for the field.
int	getIntField(PersistenceCapable pc, int field, int currentValue) Return the value for the field.
long	getLongField(PersistenceCapable pc, int field, long currentValue) Return the value for the field.
Object	getObjectField(PersistenceCapable pc, int field, Object currentValue) Return the value for the field.
Object	getObjectId(PersistenceCapable pc) Return the object representing the JDO identity of the calling instance.
PersistenceManager	getPersistenceManager(PersistenceCapable pc) Return the PersistenceManager that owns this instance.
short	getShortField(PersistenceCapable pc, int field, short currentValue) Return the value for the field.
String	getStringField(PersistenceCapable pc, int field, String currentValue) Return the value for the field.
Object	getTransactionalObjectId(PersistenceCapable pc) Return the object representing the JDO identity of the calling instance.
Object	getVersion(PersistenceCapable pc) Return the object representing the version of the calling instance.
boolean	isDeleted(PersistenceCapable pc) Tests whether this object has been deleted.
boolean	isDirty(PersistenceCapable pc) Tests whether this object is dirty.
boolean	isLoaded(PersistenceCapable pc, int field) Return true if the field is cached in the calling instance.
boolean	isNew(PersistenceCapable pc) Tests whether this object has been newly made persistent.
boolean	isPersistent(PersistenceCapable pc) Tests whether this object is persistent.
boolean	isTransactional(PersistenceCapable pc) Tests whether this object is transactional.
void	makeDirty(PersistenceCapable pc, String fieldName) Mark the associated PersistenceCapable field dirty.
void	preSerialize(PersistenceCapable pc) Guarantee that the serializable transactional and persistent fields are loaded into the instance.
void	providedBooleanField(PersistenceCapable pc, int field, boolean currentValue) The value of the field requested to be provided to the StateManager.
void	providedByteField(PersistenceCapable pc, int field, byte currentValue) The value of the field requested to be provided to the StateManager.
void	providedCharField(PersistenceCapable pc, int field, char currentValue) The value of the field requested to be provided to the StateManager.
void	providedDoubleField(PersistenceCapable pc, int field, double currentValue) The value of the field requested to be provided to the StateManager.
void	providedFloatField(PersistenceCapable pc, int field, float currentValue) The value of the field requested to be provided to the StateManager.
void	providedIntField(PersistenceCapable pc, int field, int currentValue) The value of the field requested to be provided to the StateManager.
void	providedLongField(PersistenceCapable pc, int field, long currentValue) The value of the field requested to be provided to the StateManager.
void	providedObjectField(PersistenceCapable pc, int field, Object currentValue) The value of the field requested to be provided to the StateManager.
void	providedShortField(PersistenceCapable pc, int field, short currentValue) The value of the field requested to be provided to the StateManager.
void	providedStringField(PersistenceCapable pc, int field, String currentValue) The value of the field requested to be provided to the StateManager.
boolean	replacingBooleanField(PersistenceCapable pc, int field) The replacement value of the field in the calling instance.
byte	replacingByteField(PersistenceCapable pc, int field) The replacement value of the field in the calling instance.
char	replacingCharField(PersistenceCapable pc, int field) The replacement value of the field in the calling instance.
Object[]	replacingDetachedState(Detachable pc, Object[] state) The replacement value of the detached state in the calling instance.
double	replacingDoubleField(PersistenceCapable pc, int field) The replacement value of the field in the calling instance.
byte	replacingFlags(PersistenceCapable pc) The owning StateManager uses this method to supply the value of the flags to the PersistenceCapable instance.
float	replacingFloatField(PersistenceCapable pc, int field) The replacement value of the field in the calling instance.
int	replacingIntField(PersistenceCapable pc, int field) The replacement value of the field in the calling instance.
long	replacingLongField(PersistenceCapable pc, int field) The replacement value of the field in the calling instance.
Object	replacingObjectField(PersistenceCapable pc, int field) The replacement value of the field in the calling instance.
short	replacingShortField(PersistenceCapable pc, int field) The replacement value of the field in the calling instance.
StateManager	replacingStateManager(PersistenceCapable pc, StateManager sm) Replace the current value of jdoStateManager.
String	replacingStringField(PersistenceCapable pc, int field) The replacement value of the field in the calling instance.
void	setBooleanField(PersistenceCapable pc, int field, boolean currentValue, boolean newValue) Mark the field as modified by the user.
void	setByteField(PersistenceCapable pc, int field, byte currentValue, byte newValue) Mark the field as modified by the user.
void	setCharField(PersistenceCapable pc, int field, char currentValue, char newValue) Mark the field as modified by the user.
void	setDoubleField(PersistenceCapable pc, int field, double currentValue, double newValue) Mark the field as modified by the user.
void	setFloatField(PersistenceCapable pc, int field, float currentValue, float newValue) Mark the field as modified by the user.
void	setIntField(PersistenceCapable pc, int field, int currentValue, int newValue) Mark the field as modified by the user.
void	setLongField(PersistenceCapable pc, int field, long currentValue, long newValue) Mark the field as modified by the user.
void	setObjectField(PersistenceCapable pc, int field, Object currentValue, Object newValue) Mark the field as modified by the user.
void	setShortField(PersistenceCapable pc, int field, short currentValue, short newValue) Mark the field as modified by the user.
void	setStringField(PersistenceCapable pc, int field, String currentValue, String newValue) Mark the field as modified by the user.

Method Detail

replacingFlags

byte replacingFlags(PersistenceCapable pc)

The owning StateManager uses this method to supply the value of the flags to the PersistenceCapable instance.

Parameters:

pc - the calling PersistenceCapable instance

Returns:

the value of jdoFlags to be stored in the PersistenceCapable instance

replacingStateManager

StateManager replacingStateManager(PersistenceCapable pc,
                                   StateManager sm)

Replace the current value of jdoStateManager.

This method is called by the PersistenceCapable whenever jdoReplaceStateManager is called and there is already an owning StateManager. This is a security precaution to ensure that the owning StateManager is the only source of any change to its reference in the PersistenceCapable.

Parameters:

pc - the calling PersistenceCapable instance

sm - the proposed new value for the jdoStateManager

Returns:

the new value for the jdoStateManager

isDirty

boolean isDirty(PersistenceCapable pc)

Tests whether this object is dirty. Instances that have been modified, deleted, or newly made persistent in the current transaction return true.

Transient nontransactional instances return false.

Parameters:

pc - the calling PersistenceCapable instance

Returns:

true if this instance has been modified in the current transaction.

See Also:

PersistenceCapable.jdoMakeDirty(String fieldName)

isTransactional

boolean isTransactional(PersistenceCapable pc)

Tests whether this object is transactional. Instances that respect transaction boundaries return true. These instances include transient instances made transactional as a result of being the target of a makeTransactional method call; newly made persistent or deleted persistent instances; persistent instances read in data store transactions; and persistent instances modified in optimistic transactions.

Transient nontransactional instances return false.

Parameters:

pc - the calling PersistenceCapable instance

Returns:

true if this instance is transactional.

isPersistent

boolean isPersistent(PersistenceCapable pc)

Tests whether this object is persistent. Instances whose state is stored in the data store return true.

Transient instances return false.

Parameters:

pc - the calling PersistenceCapable instance

Returns:

true if this instance is persistent.

See Also:

PersistenceManager.makePersistent(Object pc)

isNew

boolean isNew(PersistenceCapable pc)

Tests whether this object has been newly made persistent. Instances that have been made persistent in the current transaction return true.

Transient instances return false.

Parameters:

pc - the calling PersistenceCapable instance

Returns:

true if this instance was made persistent in the current transaction.

See Also:

PersistenceManager.makePersistent(Object pc)

isDeleted

boolean isDeleted(PersistenceCapable pc)

Tests whether this object has been deleted. Instances that have been deleted in the current transaction return true.

Transient instances return false.

Parameters:

pc - the calling PersistenceCapable instance

Returns:

true if this instance was deleted in the current transaction.

See Also:

PersistenceManager.deletePersistent(Object pc)

getPersistenceManager

PersistenceManager getPersistenceManager(PersistenceCapable pc)

Return the PersistenceManager that owns this instance.

Parameters:

pc - the calling PersistenceCapable instance

Returns:

the PersistenceManager that owns this instance

makeDirty

void makeDirty(PersistenceCapable pc,
               String fieldName)

Mark the associated PersistenceCapable field dirty.

The StateManager will make a copy of the field so it can be restored if needed later, and then mark the field as modified in the current transaction.

Parameters:

pc - the calling PersistenceCapable instance

fieldName - the name of the field

getObjectId

Object getObjectId(PersistenceCapable pc)

Return the object representing the JDO identity of the calling instance. If the JDO identity is being changed in the current transaction, this method returns the identity as of the beginning of the transaction.

Parameters:

pc - the calling PersistenceCapable instance

Returns:

the object representing the JDO identity of the calling instance

getTransactionalObjectId

Object getTransactionalObjectId(PersistenceCapable pc)

Return the object representing the JDO identity of the calling instance. If the JDO identity is being changed in the current transaction, this method returns the current identity as changed in the transaction.

Parameters:

pc - the calling PersistenceCapable instance

Returns:

the object representing the JDO identity of the calling instance

getVersion

Object getVersion(PersistenceCapable pc)

Return the object representing the version of the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

Returns:

the object representing the version of the calling instance

Since:

2.0

isLoaded

boolean isLoaded(PersistenceCapable pc,
                 int field)

Return true if the field is cached in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

whether the field is cached in the calling instance

preSerialize

void preSerialize(PersistenceCapable pc)

Guarantee that the serializable transactional and persistent fields are loaded into the instance. This method is called by the generated jdoPreSerialize method prior to serialization of the instance.

Parameters:

pc - the calling PersistenceCapable instance

getBooleanField

boolean getBooleanField(PersistenceCapable pc,
                        int field,
                        boolean currentValue)

Return the value for the field.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

Returns:

the new value for the field

getCharField

char getCharField(PersistenceCapable pc,
                  int field,
                  char currentValue)

Return the value for the field.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

Returns:

the new value for the field

getByteField

byte getByteField(PersistenceCapable pc,
                  int field,
                  byte currentValue)

Return the value for the field.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

Returns:

the new value for the field

getShortField

short getShortField(PersistenceCapable pc,
                    int field,
                    short currentValue)

Return the value for the field.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

Returns:

the new value for the field

getIntField

int getIntField(PersistenceCapable pc,
                int field,
                int currentValue)

Return the value for the field.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

Returns:

the new value for the field

getLongField

long getLongField(PersistenceCapable pc,
                  int field,
                  long currentValue)

Return the value for the field.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

Returns:

the new value for the field

getFloatField

float getFloatField(PersistenceCapable pc,
                    int field,
                    float currentValue)

Return the value for the field.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

Returns:

the new value for the field

getDoubleField

double getDoubleField(PersistenceCapable pc,
                      int field,
                      double currentValue)

Return the value for the field.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

Returns:

the new value for the field

getStringField

String getStringField(PersistenceCapable pc,
                      int field,
                      String currentValue)

Return the value for the field.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

Returns:

the new value for the field

getObjectField

Object getObjectField(PersistenceCapable pc,
                      int field,
                      Object currentValue)

Return the value for the field.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

Returns:

the new value for the field

setBooleanField

void setBooleanField(PersistenceCapable pc,
                     int field,
                     boolean currentValue,
                     boolean newValue)

Mark the field as modified by the user.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

newValue - the proposed new value of the field

setCharField

void setCharField(PersistenceCapable pc,
                  int field,
                  char currentValue,
                  char newValue)

Mark the field as modified by the user.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

newValue - the proposed new value of the field

setByteField

void setByteField(PersistenceCapable pc,
                  int field,
                  byte currentValue,
                  byte newValue)

Mark the field as modified by the user.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

newValue - the proposed new value of the field

setShortField

void setShortField(PersistenceCapable pc,
                   int field,
                   short currentValue,
                   short newValue)

Mark the field as modified by the user.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

newValue - the proposed new value of the field

setIntField

void setIntField(PersistenceCapable pc,
                 int field,
                 int currentValue,
                 int newValue)

Mark the field as modified by the user.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

newValue - the proposed new value of the field

setLongField

void setLongField(PersistenceCapable pc,
                  int field,
                  long currentValue,
                  long newValue)

Mark the field as modified by the user.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

newValue - the proposed new value of the field

setFloatField

void setFloatField(PersistenceCapable pc,
                   int field,
                   float currentValue,
                   float newValue)

Mark the field as modified by the user.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

newValue - the proposed new value of the field

setDoubleField

void setDoubleField(PersistenceCapable pc,
                    int field,
                    double currentValue,
                    double newValue)

Mark the field as modified by the user.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

newValue - the proposed new value of the field

setStringField

void setStringField(PersistenceCapable pc,
                    int field,
                    String currentValue,
                    String newValue)

Mark the field as modified by the user.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

newValue - the proposed new value of the field

setObjectField

void setObjectField(PersistenceCapable pc,
                    int field,
                    Object currentValue,
                    Object newValue)

Mark the field as modified by the user.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

newValue - the proposed new value of the field

providedBooleanField

void providedBooleanField(PersistenceCapable pc,
                          int field,
                          boolean currentValue)

The value of the field requested to be provided to the StateManager.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

providedCharField

void providedCharField(PersistenceCapable pc,
                       int field,
                       char currentValue)

The value of the field requested to be provided to the StateManager.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

providedByteField

void providedByteField(PersistenceCapable pc,
                       int field,
                       byte currentValue)

The value of the field requested to be provided to the StateManager.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

providedShortField

void providedShortField(PersistenceCapable pc,
                        int field,
                        short currentValue)

The value of the field requested to be provided to the StateManager.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

providedIntField

void providedIntField(PersistenceCapable pc,
                      int field,
                      int currentValue)

The value of the field requested to be provided to the StateManager.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

providedLongField

void providedLongField(PersistenceCapable pc,
                       int field,
                       long currentValue)

The value of the field requested to be provided to the StateManager.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

providedFloatField

void providedFloatField(PersistenceCapable pc,
                        int field,
                        float currentValue)

The value of the field requested to be provided to the StateManager.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

providedDoubleField

void providedDoubleField(PersistenceCapable pc,
                         int field,
                         double currentValue)

The value of the field requested to be provided to the StateManager.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

providedStringField

void providedStringField(PersistenceCapable pc,
                         int field,
                         String currentValue)

The value of the field requested to be provided to the StateManager.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

providedObjectField

void providedObjectField(PersistenceCapable pc,
                         int field,
                         Object currentValue)

The value of the field requested to be provided to the StateManager.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

currentValue - the current value of the field

replacingBooleanField

boolean replacingBooleanField(PersistenceCapable pc,
                              int field)

The replacement value of the field in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

the new value for the field

replacingCharField

char replacingCharField(PersistenceCapable pc,
                        int field)

The replacement value of the field in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

the new value for the field

replacingByteField

byte replacingByteField(PersistenceCapable pc,
                        int field)

The replacement value of the field in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

the new value for the field

replacingShortField

short replacingShortField(PersistenceCapable pc,
                          int field)

The replacement value of the field in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

the new value for the field

replacingIntField

int replacingIntField(PersistenceCapable pc,
                      int field)

The replacement value of the field in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

the new value for the field

replacingLongField

long replacingLongField(PersistenceCapable pc,
                        int field)

The replacement value of the field in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

the new value for the field

replacingFloatField

float replacingFloatField(PersistenceCapable pc,
                          int field)

The replacement value of the field in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

the new value for the field

replacingDoubleField

double replacingDoubleField(PersistenceCapable pc,
                            int field)

The replacement value of the field in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

the new value for the field

replacingStringField

String replacingStringField(PersistenceCapable pc,
                            int field)

The replacement value of the field in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

the new value for the field

replacingObjectField

Object replacingObjectField(PersistenceCapable pc,
                            int field)

The replacement value of the field in the calling instance.

Parameters:

pc - the calling PersistenceCapable instance

field - the field number

Returns:

the new value for the field

replacingDetachedState

Object[] replacingDetachedState(Detachable pc,
                                Object[] state)

The replacement value of the detached state in the calling instance.

Parameters:

pc - the calling Detachable instance

state - the current value of the detached state

Returns:

the replacement value for the detached state

Since:

2.0