org.datanucleus.store.fieldmanager

Class ReachabilityFieldManager

java.lang.Object

org.datanucleus.store.fieldmanager.AbstractFieldManager

org.datanucleus.store.fieldmanager.ReachabilityFieldManager

All Implemented Interfaces:

FieldConsumer, FieldManager, FieldSupplier

public class ReachabilityFieldManager
extends AbstractFieldManager

Field manager that runs reachability on all PC objects referenced from the source object. Whenever a PC object is encountered it recurses to that object, and so on. Provides the basis for the JDO feature "persistence-by-reachability-at-commit".

Constructor Summary

Constructors

Constructor and Description
ReachabilityFieldManager(ObjectProvider op, Set reachables) Constructor.

Method Summary

Modifier and Type	Method and Description
protected void	processPersistable(Object obj, AbstractMemberMetaData mmd) Utility method to process the passed persistable object.
void	storeBooleanField(int fieldNumber, boolean value) Method to store a boolean field value in the object at the specified field position.
void	storeByteField(int fieldNumber, byte value) Method to store a byte field value in the object at the specified field position.
void	storeCharField(int fieldNumber, char value) Method to store a char field value in the object at the specified field position.
void	storeDoubleField(int fieldNumber, double value) Method to store a double field value in the object at the specified field position.
void	storeFloatField(int fieldNumber, float value) Method to store a float field value in the object at the specified field position.
void	storeIntField(int fieldNumber, int value) Method to store an int field value in the object at the specified field position.
void	storeLongField(int fieldNumber, long value) Method to store a long field value in the object at the specified field position.
void	storeObjectField(int fieldNumber, Object value) Method to store an object field.
void	storeShortField(int fieldNumber, short value) Method to store a short field value in the object at the specified field position.
void	storeStringField(int fieldNumber, String value) Method to store a string field value in the object at the specified field position.

Methods inherited from class org.datanucleus.store.fieldmanager.AbstractFieldManager

fetchBooleanField, fetchByteField, fetchCharField, fetchDoubleField, fetchFloatField, fetchIntField, fetchLongField, fetchObjectField, fetchShortField, fetchStringField

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReachabilityFieldManager

public ReachabilityFieldManager(ObjectProvider op,
                                Set reachables)

Constructor.

Parameters:

op - The ObjectProvider for the object.

reachables - Reachables up to this point

Method Detail

processPersistable

protected void processPersistable(Object obj,
                                  AbstractMemberMetaData mmd)

Utility method to process the passed persistable object.

Parameters:

obj - The persistable object

mmd - MetaData for the member storing this object

storeObjectField

public void storeObjectField(int fieldNumber,
                             Object value)

Method to store an object field.

Specified by:

storeObjectField in interface FieldConsumer

Overrides:

storeObjectField in class AbstractFieldManager

Parameters:

fieldNumber - Number of the field (absolute)

value - Value of the field

storeBooleanField

public void storeBooleanField(int fieldNumber,
                              boolean value)

Description copied from interface: FieldConsumer

Method to store a boolean field value in the object at the specified field position.

Specified by:

storeBooleanField in interface FieldConsumer

Overrides:

storeBooleanField in class AbstractFieldManager

Parameters:

fieldNumber - Number of the field

value - value to store

storeByteField

public void storeByteField(int fieldNumber,
                           byte value)

Description copied from interface: FieldConsumer

Method to store a byte field value in the object at the specified field position.

Specified by:

storeByteField in interface FieldConsumer

Overrides:

storeByteField in class AbstractFieldManager

Parameters:

fieldNumber - Number of the field

value - value to store

storeCharField

public void storeCharField(int fieldNumber,
                           char value)

Description copied from interface: FieldConsumer

Method to store a char field value in the object at the specified field position.

Specified by:

storeCharField in interface FieldConsumer

Overrides:

storeCharField in class AbstractFieldManager

Parameters:

fieldNumber - Number of the field

value - value to store

storeDoubleField

public void storeDoubleField(int fieldNumber,
                             double value)

Description copied from interface: FieldConsumer

Method to store a double field value in the object at the specified field position.

Specified by:

storeDoubleField in interface FieldConsumer

Overrides:

storeDoubleField in class AbstractFieldManager

Parameters:

fieldNumber - Number of the field

value - value to store

storeFloatField

public void storeFloatField(int fieldNumber,
                            float value)

Description copied from interface: FieldConsumer

Method to store a float field value in the object at the specified field position.

Specified by:

storeFloatField in interface FieldConsumer

Overrides:

storeFloatField in class AbstractFieldManager

Parameters:

fieldNumber - Number of the field

value - value to store

storeIntField

public void storeIntField(int fieldNumber,
                          int value)

Description copied from interface: FieldConsumer

Method to store an int field value in the object at the specified field position.

Specified by:

storeIntField in interface FieldConsumer

Overrides:

storeIntField in class AbstractFieldManager

Parameters:

fieldNumber - Number of the field

value - value to store

storeLongField

public void storeLongField(int fieldNumber,
                           long value)

Description copied from interface: FieldConsumer

Method to store a long field value in the object at the specified field position.

Specified by:

storeLongField in interface FieldConsumer

Overrides:

storeLongField in class AbstractFieldManager

Parameters:

fieldNumber - Number of the field

value - value to store

storeShortField

public void storeShortField(int fieldNumber,
                            short value)

Description copied from interface: FieldConsumer

Method to store a short field value in the object at the specified field position.

Specified by:

storeShortField in interface FieldConsumer

Overrides:

storeShortField in class AbstractFieldManager

Parameters:

fieldNumber - Number of the field

value - value to store

storeStringField

public void storeStringField(int fieldNumber,
                             String value)

Description copied from interface: FieldConsumer

Method to store a string field value in the object at the specified field position.

Specified by:

storeStringField in interface FieldConsumer

Overrides:

storeStringField in class AbstractFieldManager

Parameters:

fieldNumber - Number of the field

value - value to store