org.datanucleus.store.mapped.mapping
Class SerialisedReferenceMapping

java.lang.Object
  org.datanucleus.store.mapped.mapping.JavaTypeMapping
      org.datanucleus.store.mapped.mapping.SingleFieldMapping
          org.datanucleus.store.mapped.mapping.SerialisedMapping
              org.datanucleus.store.mapped.mapping.SerialisedReferenceMapping

public class SerialisedReferenceMapping
extends SerialisedMapping

Mapping for a serialised reference (Interface/Object) field. Extends SerialisedMapping since that provides the basic serialisation mechanism, adding on the addition of StateManagers to the serialised object whenever it is required (since the object is a PersistenceCapable).

Field Summary

Fields inherited from class org.datanucleus.store.mapped.mapping.JavaTypeMapping

absFieldNumber, datastoreContainer, datastoreMappings, LOCALISER, mmd, referenceMapping, roleForMember, storeMgr, type

Constructor Summary

SerialisedReferenceMapping()

Method Summary

Object	getObject(ExecutionContext ec, Object resultSet, int[] exprIndex) Method to extract the value of the PersistenceCapable from a ResultSet.
Object	getObject(ExecutionContext ec, Object resultSet, int[] exprIndex, ObjectProvider ownerSM, int fieldNumber) Method to extract the value of the PersistenceCapable from a ResultSet.
void	setObject(ExecutionContext ec, Object preparedStatement, int[] exprIndex, Object value) Method to populate parameter positions in a PreparedStatement with this object
void	setObject(ExecutionContext ec, Object preparedStatement, int[] exprIndex, Object value, ObjectProvider ownerSM, int fieldNumber) Method to populate parameter positions in a PreparedStatement with this object

Methods inherited from class org.datanucleus.store.mapped.mapping.SerialisedMapping

getJavaType, getJavaTypeForDatastoreMapping

Methods inherited from class org.datanucleus.store.mapped.mapping.SingleFieldMapping

equals, getBoolean, getByte, getChar, getDefaultLength, getDouble, getFloat, getInt, getLong, getShort, getString, getValidValues, initialize, prepareDatastoreMapping, setBoolean, setByte, setChar, setDouble, setFloat, setInt, setLong, setShort, setString

Methods inherited from class org.datanucleus.store.mapped.mapping.JavaTypeMapping

addDatastoreMapping, failureMessage, getAbsoluteFieldNumber, getColumnMetaDataForMember, getDatastoreContainer, getDatastoreMapping, getDatastoreMappings, getMemberMetaData, getNumberOfDatastoreMappings, getReferenceMapping, getRoleForMember, getStoreManager, getType, getValueForDatastoreMapping, hashCode, hasSimpleDatastoreRepresentation, includeInFetchStatement, includeInInsertStatement, includeInUpdateStatement, initialize, isNullable, isSerialised, representableAsStringLiteralInStatement, setAbsFieldNumber, setDatastoreContainer, setMemberMetaData, setReferenceMapping, setRoleForMember

Methods inherited from class java.lang.Object

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

Constructor Detail

SerialisedReferenceMapping

public SerialisedReferenceMapping()

Method Detail

setObject

public void setObject(ExecutionContext ec,
                      Object preparedStatement,
                      int[] exprIndex,
                      Object value)

Method to populate parameter positions in a PreparedStatement with this object

Overrides:

setObject in class SingleFieldMapping

Parameters:

ec - execution context

preparedStatement - The Prepared Statement

exprIndex - The parameter positions to populate

value - The value of the PC to use in populating the parameter positions

setObject

public void setObject(ExecutionContext ec,
                      Object preparedStatement,
                      int[] exprIndex,
                      Object value,
                      ObjectProvider ownerSM,
                      int fieldNumber)

Method to populate parameter positions in a PreparedStatement with this object

Overrides:

setObject in class JavaTypeMapping

Parameters:

ec - execution context

preparedStatement - The Prepared Statement

exprIndex - The parameter positions to populate

value - The value of the PC to use in populating the parameter positions

ownerSM - ObjectProvider for the owning object

fieldNumber - field number of this object in the owning object

getObject

public Object getObject(ExecutionContext ec,
                        Object resultSet,
                        int[] exprIndex)

Method to extract the value of the PersistenceCapable from a ResultSet.

Overrides:

getObject in class SingleFieldMapping

Parameters:

ec - execution context

resultSet - The ResultSet

exprIndex - The parameter positions in the result set to use.

Returns:

The (deserialised) PersistenceCapable object

getObject

public Object getObject(ExecutionContext ec,
                        Object resultSet,
                        int[] exprIndex,
                        ObjectProvider ownerSM,
                        int fieldNumber)

Method to extract the value of the PersistenceCapable from a ResultSet.

Overrides:

getObject in class JavaTypeMapping

Parameters:

ec - execution context

resultSet - The ResultSet

exprIndex - The parameter positions in the result set to use.

ownerSM - The owning object

fieldNumber - Absolute number of field in owner object

Returns:

The (deserialised) PersistenceCapable object