Package org.eclipse.persistence.internal.descriptors

Class SerializedObjectPolicyWrapper

java.lang.Object

org.eclipse.persistence.internal.descriptors.AbstractSerializedObjectPolicy

org.eclipse.persistence.internal.descriptors.SerializedObjectPolicyWrapper

All Implemented Interfaces:

Serializable, Cloneable, SerializedObjectPolicy

public class SerializedObjectPolicyWrapper
extends AbstractSerializedObjectPolicy

It's a transition class that holds SerializedObjectPolicy class name and field obtained from matadata before it can be instantiated.

Since:

EclipseLink 2.5.1

Author:

Andrei Ilitchev

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected String	serializedObjectPolicyClassName

Fields inherited from class org.eclipse.persistence.internal.descriptors.AbstractSerializedObjectPolicy

descriptor, field

Constructor Summary

Constructors

Constructor	Description
SerializedObjectPolicyWrapper(String serializedObjectPolicyClassName)

Method Summary

Modifier and Type	Method	Description
SerializedObjectPolicyWrapper	clone()
List<DatabaseField>	getAllSelectionFields()	Lists the database fields that should be read by the query using the policy, in case all inherited objects are read using outer joining.
Object	getObjectFromRow(AbstractRecord databaseRow, AbstractSession session, ObjectLevelReadQuery query)	Deserialize the object from the value corresponding to the policy field, nullify that value, set the object into the row using setSopObject, also return it.
List<DatabaseField>	getSelectionFields()	Lists the database fields that should be read by the query using the policy.
String	getSerializedObjectPolicyClassName()
void	initialize(AbstractSession session)	initialize the policy
void	initializeField(AbstractSession session)	unless the field is already initialized by parent descriptor, add the field to the owning descriptor and set field's type
SerializedObjectPolicy	instantiateChild()	instantiate policy for child descriptor
void	postInitialize(AbstractSession session)	postinitialize the policy: determine which mappings are included, which fields should be selected
void	putObjectIntoRow(AbstractRecord databaseRow, Object object, AbstractSession session)	Serialize the object and put the result into the row as a value corresponding to the policy field

Methods inherited from class org.eclipse.persistence.internal.descriptors.AbstractSerializedObjectPolicy

getDescriptor, getField, setDescriptor, setField

Methods inherited from class java.lang.Object

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

Field Detail

serializedObjectPolicyClassName

protected String serializedObjectPolicyClassName

Constructor Detail

SerializedObjectPolicyWrapper

public SerializedObjectPolicyWrapper(String serializedObjectPolicyClassName)

Method Detail

getSerializedObjectPolicyClassName

public String getSerializedObjectPolicyClassName()

clone

public SerializedObjectPolicyWrapper clone()

Specified by:

clone in interface SerializedObjectPolicy

Overrides:

clone in class AbstractSerializedObjectPolicy

instantiateChild

public SerializedObjectPolicy instantiateChild()

Description copied from interface: SerializedObjectPolicy

instantiate policy for child descriptor

initializeField

public void initializeField(AbstractSession session)

Description copied from interface: SerializedObjectPolicy

unless the field is already initialized by parent descriptor, add the field to the owning descriptor and set field's type

Specified by:

initializeField in interface SerializedObjectPolicy

Overrides:

initializeField in class AbstractSerializedObjectPolicy

initialize

public void initialize(AbstractSession session)

Description copied from interface: SerializedObjectPolicy

initialize the policy

postInitialize

public void postInitialize(AbstractSession session)

Description copied from interface: SerializedObjectPolicy

postinitialize the policy: determine which mappings are included, which fields should be selected

putObjectIntoRow

public void putObjectIntoRow(AbstractRecord databaseRow,
                             Object object,
                             AbstractSession session)

Description copied from interface: SerializedObjectPolicy

Serialize the object and put the result into the row as a value corresponding to the policy field

getObjectFromRow

public Object getObjectFromRow(AbstractRecord databaseRow,
                               AbstractSession session,
                               ObjectLevelReadQuery query)

Description copied from interface: SerializedObjectPolicy

Deserialize the object from the value corresponding to the policy field, nullify that value, set the object into the row using setSopObject, also return it. If the object is null or invalid, behaviour depend on whether the policy allows the query to recover or not (see comments to getFieldsToSelect and getAllFieldsToSelect methods): if recovery is possible then the method should return null, otherwise throw QueryException (query is a parameter of this method only because it's required by QueryException).

getSelectionFields

public List<DatabaseField> getSelectionFields()

Description copied from interface: SerializedObjectPolicy

Lists the database fields that should be read by the query using the policy. To allow recovery in case of null or invalid sopObject, then this method should return all the fields define by descriptor (descriptor.getFields()).

getAllSelectionFields

public List<DatabaseField> getAllSelectionFields()

Description copied from interface: SerializedObjectPolicy

Lists the database fields that should be read by the query using the policy, in case all inherited objects are read using outer joining. To allow recovery in case of null or invalid sopObject, then this method should return all the fields define by descriptor (descriptor.getAllFields()).