Class DynamicSchemaFieldManager

java.lang.Object

org.datanucleus.store.fieldmanager.AbstractFieldManager

org.datanucleus.store.rdbms.fieldmanager.DynamicSchemaFieldManager

All Implemented Interfaces:

org.datanucleus.store.fieldmanager.FieldManager

public class DynamicSchemaFieldManager
extends org.datanucleus.store.fieldmanager.AbstractFieldManager

Field manager that is used to check the values in fields in order to detect "new" classes that impact on the datastore schema, hence allowing dynamic schema updates.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) RDBMSStoreManager	rdbmsMgr	Manager for the RDBMS datastore.
(package private) boolean	schemaUpdatesPerformed	Flag for whether we have updated the schema.
(package private) org.datanucleus.state.DNStateManager	sm	StateManager of the object being processed.

Constructor Summary

Constructors

Constructor	Description
DynamicSchemaFieldManager(RDBMSStoreManager rdbmsMgr, org.datanucleus.state.DNStateManager sm)	Constructor.

Method Summary

Modifier and Type	Method	Description
boolean	hasPerformedSchemaUpdates()	Accessor for whether this field manager has made updates to the schema.
protected void	processInterfaceMappingForValue(InterfaceMapping intfMapping, Object value, org.datanucleus.metadata.AbstractMemberMetaData mmd, org.datanucleus.ExecutionContext ec)
void	storeBooleanField(int fieldNumber, boolean value)
void	storeByteField(int fieldNumber, byte value)
void	storeCharField(int fieldNumber, char value)
void	storeDoubleField(int fieldNumber, double value)
void	storeFloatField(int fieldNumber, float value)
void	storeIntField(int fieldNumber, int value)
void	storeLongField(int fieldNumber, long value)
void	storeObjectField(int fieldNumber, Object value)	Method to store an object field into the attached instance.
void	storeShortField(int fieldNumber, short value)
void	storeStringField(int fieldNumber, String value)

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

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

Methods inherited from class Object

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

Field Details

rdbmsMgr

RDBMSStoreManager rdbmsMgr

Manager for the RDBMS datastore.

sm

org.datanucleus.state.DNStateManager sm

StateManager of the object being processed.

schemaUpdatesPerformed

boolean schemaUpdatesPerformed

Flag for whether we have updated the schema.

Constructor Details

DynamicSchemaFieldManager

public DynamicSchemaFieldManager(RDBMSStoreManager rdbmsMgr,
 org.datanucleus.state.DNStateManager sm)

Constructor.

Parameters:

rdbmsMgr - RDBMSManager

sm - StateManager for the object being processed

Method Details

hasPerformedSchemaUpdates

public boolean hasPerformedSchemaUpdates()

Accessor for whether this field manager has made updates to the schema.

Returns:

Whether updates have been made.

storeObjectField

public void storeObjectField(int fieldNumber,
 Object value)

Method to store an object field into the attached instance.

Specified by:

storeObjectField in interface org.datanucleus.store.fieldmanager.FieldManager

Overrides:

storeObjectField in class org.datanucleus.store.fieldmanager.AbstractFieldManager

Parameters:

fieldNumber - Number of the field to store

value - the value in the detached instance

storeBooleanField

public void storeBooleanField(int fieldNumber,
 boolean value)

Specified by:

storeBooleanField in interface org.datanucleus.store.fieldmanager.FieldManager

Overrides:

storeBooleanField in class org.datanucleus.store.fieldmanager.AbstractFieldManager

storeByteField

public void storeByteField(int fieldNumber,
 byte value)

Specified by:

storeByteField in interface org.datanucleus.store.fieldmanager.FieldManager

Overrides:

storeByteField in class org.datanucleus.store.fieldmanager.AbstractFieldManager

storeCharField

public void storeCharField(int fieldNumber,
 char value)

Specified by:

storeCharField in interface org.datanucleus.store.fieldmanager.FieldManager

Overrides:

storeCharField in class org.datanucleus.store.fieldmanager.AbstractFieldManager

storeDoubleField

public void storeDoubleField(int fieldNumber,
 double value)

Specified by:

storeDoubleField in interface org.datanucleus.store.fieldmanager.FieldManager

Overrides:

storeDoubleField in class org.datanucleus.store.fieldmanager.AbstractFieldManager

storeFloatField

public void storeFloatField(int fieldNumber,
 float value)

Specified by:

storeFloatField in interface org.datanucleus.store.fieldmanager.FieldManager

Overrides:

storeFloatField in class org.datanucleus.store.fieldmanager.AbstractFieldManager

storeIntField

public void storeIntField(int fieldNumber,
 int value)

Specified by:

storeIntField in interface org.datanucleus.store.fieldmanager.FieldManager

Overrides:

storeIntField in class org.datanucleus.store.fieldmanager.AbstractFieldManager

storeLongField

public void storeLongField(int fieldNumber,
 long value)

Specified by:

storeLongField in interface org.datanucleus.store.fieldmanager.FieldManager

Overrides:

storeLongField in class org.datanucleus.store.fieldmanager.AbstractFieldManager

storeShortField

public void storeShortField(int fieldNumber,
 short value)

Specified by:

storeShortField in interface org.datanucleus.store.fieldmanager.FieldManager

Overrides:

storeShortField in class org.datanucleus.store.fieldmanager.AbstractFieldManager

storeStringField

public void storeStringField(int fieldNumber,
 String value)

Specified by:

storeStringField in interface org.datanucleus.store.fieldmanager.FieldManager

Overrides:

storeStringField in class org.datanucleus.store.fieldmanager.AbstractFieldManager

processInterfaceMappingForValue

protected void processInterfaceMappingForValue(InterfaceMapping intfMapping,
 Object value,
 org.datanucleus.metadata.AbstractMemberMetaData mmd,
 org.datanucleus.ExecutionContext ec)