Class AttachFieldManager
java.lang.Object
org.datanucleus.store.fieldmanager.AbstractFieldManager
org.datanucleus.store.fieldmanager.AttachFieldManager
- All Implemented Interfaces:
FieldManager
Utility class to handle the attach of fields.
The attachment process has 2 distinct cases to cater for.
- The object was detached, has been updated, and needs reattaching.
- The object was detached from a different datastore, and is being attached here and we want to do a pass through the object to update the fields in the object before it is persisted
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate final DNStateManager
StateManager for the attached instanceprivate final boolean
Whether to cascade the attach to related fields.(package private) boolean
Whether we should create attached copies, or attach in situ.private final boolean[]
Fields that were marked as dirty at attach.private final boolean
Whether the attached instance is persistent yet.private final boolean[]
The second class mutable fields. -
Constructor Summary
ConstructorsConstructorDescriptionAttachFieldManager
(DNStateManager attachedSM, boolean[] secondClassMutableFields, boolean[] dirtyFields, boolean persistent, boolean cascadeAttach, boolean copy) Constructor. -
Method Summary
Modifier and TypeMethodDescriptionvoid
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 into the attached instance.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
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Field Details
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attachedSM
StateManager for the attached instance -
secondClassMutableFields
private final boolean[] secondClassMutableFieldsThe second class mutable fields. -
dirtyFields
private final boolean[] dirtyFieldsFields that were marked as dirty at attach. -
persistent
private final boolean persistentWhether the attached instance is persistent yet. -
cascadeAttach
private final boolean cascadeAttachWhether to cascade the attach to related fields. -
copy
boolean copyWhether we should create attached copies, or attach in situ.
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Constructor Details
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AttachFieldManager
public AttachFieldManager(DNStateManager attachedSM, boolean[] secondClassMutableFields, boolean[] dirtyFields, boolean persistent, boolean cascadeAttach, boolean copy) Constructor.- Parameters:
attachedSM
- StateManager for the attached instancesecondClassMutableFields
- second class mutable field flagsdirtyFields
- Flags for whether the field(s) are dirtypersistent
- whether the object being "attached" is persistent (yet)cascadeAttach
- Whether to cascade any attach calls to related fieldscopy
- Whether to attach copy
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Method Details
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storeObjectField
Method to store an object field into the attached instance.- Specified by:
storeObjectField
in interfaceFieldManager
- Overrides:
storeObjectField
in classAbstractFieldManager
- Parameters:
fieldNumber
- Number of the field to storevalue
- the value in the detached instance
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storeBooleanField
public void storeBooleanField(int fieldNumber, boolean value) Description copied from interface:FieldManager
Method to store a boolean field value in the object at the specified field position.- Specified by:
storeBooleanField
in interfaceFieldManager
- Overrides:
storeBooleanField
in classAbstractFieldManager
- Parameters:
fieldNumber
- Number of the fieldvalue
- value to store
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storeByteField
public void storeByteField(int fieldNumber, byte value) Description copied from interface:FieldManager
Method to store a byte field value in the object at the specified field position.- Specified by:
storeByteField
in interfaceFieldManager
- Overrides:
storeByteField
in classAbstractFieldManager
- Parameters:
fieldNumber
- Number of the fieldvalue
- value to store
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storeCharField
public void storeCharField(int fieldNumber, char value) Description copied from interface:FieldManager
Method to store a char field value in the object at the specified field position.- Specified by:
storeCharField
in interfaceFieldManager
- Overrides:
storeCharField
in classAbstractFieldManager
- Parameters:
fieldNumber
- Number of the fieldvalue
- value to store
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storeDoubleField
public void storeDoubleField(int fieldNumber, double value) Description copied from interface:FieldManager
Method to store a double field value in the object at the specified field position.- Specified by:
storeDoubleField
in interfaceFieldManager
- Overrides:
storeDoubleField
in classAbstractFieldManager
- Parameters:
fieldNumber
- Number of the fieldvalue
- value to store
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storeFloatField
public void storeFloatField(int fieldNumber, float value) Description copied from interface:FieldManager
Method to store a float field value in the object at the specified field position.- Specified by:
storeFloatField
in interfaceFieldManager
- Overrides:
storeFloatField
in classAbstractFieldManager
- Parameters:
fieldNumber
- Number of the fieldvalue
- value to store
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storeIntField
public void storeIntField(int fieldNumber, int value) Description copied from interface:FieldManager
Method to store an int field value in the object at the specified field position.- Specified by:
storeIntField
in interfaceFieldManager
- Overrides:
storeIntField
in classAbstractFieldManager
- Parameters:
fieldNumber
- Number of the fieldvalue
- value to store
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storeLongField
public void storeLongField(int fieldNumber, long value) Description copied from interface:FieldManager
Method to store a long field value in the object at the specified field position.- Specified by:
storeLongField
in interfaceFieldManager
- Overrides:
storeLongField
in classAbstractFieldManager
- Parameters:
fieldNumber
- Number of the fieldvalue
- value to store
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storeShortField
public void storeShortField(int fieldNumber, short value) Description copied from interface:FieldManager
Method to store a short field value in the object at the specified field position.- Specified by:
storeShortField
in interfaceFieldManager
- Overrides:
storeShortField
in classAbstractFieldManager
- Parameters:
fieldNumber
- Number of the fieldvalue
- value to store
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storeStringField
Description copied from interface:FieldManager
Method to store a string field value in the object at the specified field position.- Specified by:
storeStringField
in interfaceFieldManager
- Overrides:
storeStringField
in classAbstractFieldManager
- Parameters:
fieldNumber
- Number of the fieldvalue
- value to store
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