org.datanucleus.store.mapped.mapping
Class SubclassPCMapping

java.lang.Object
  org.datanucleus.store.mapped.mapping.JavaTypeMapping
      org.datanucleus.store.mapped.mapping.MultiMapping
          org.datanucleus.store.mapped.mapping.MultiPersistableMapping
              org.datanucleus.store.mapped.mapping.SubclassPCMapping

public class SubclassPCMapping
extends MultiPersistableMapping

Mapping for a field that stores a PC object that uses "subclass-table" inheritance and where this is mapped in the datastore as a separate FK for each subclass.

Field Summary

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

javaTypeMappings, numberOfDatastoreMappings

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

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

Constructor Summary

SubclassPCMapping()

Method Summary

Class	getJavaType() Accessor for the java type being mapped.
void	initialize(AbstractMemberMetaData fmd, DatastoreContainerObject container, ClassLoaderResolver clr) Initialize this JavaTypeMapping with the given DatastoreAdapter for the given FieldMetaData.
protected void	prepareDatastoreMapping(ClassLoaderResolver clr) Convenience method to create a column for each implementation type of this reference.

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

getMappingNumberForValue, getObject, setObject, setObject

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

addJavaTypeMapping, getDatastoreMapping, getDatastoreMappings, getJavaTypeMapping, getNumberOfDatastoreMappings

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

addDatastoreMapping, equals, failureMessage, getAbsoluteFieldNumber, getBoolean, getByte, getChar, getColumnMetaDataForMember, getDatastoreContainer, getDouble, getFloat, getInt, getJavaTypeForDatastoreMapping, getLong, getMemberMetaData, getObject, getReferenceMapping, getRoleForMember, getShort, getStoreManager, getString, getType, getValueForDatastoreMapping, hashCode, hasSimpleDatastoreRepresentation, includeInFetchStatement, includeInInsertStatement, includeInUpdateStatement, initialize, isNullable, isSerialised, representableAsStringLiteralInStatement, setAbsFieldNumber, setBoolean, setByte, setChar, setDatastoreContainer, setDouble, setFloat, setInt, setLong, setMemberMetaData, setReferenceMapping, setRoleForMember, setShort, setString

Methods inherited from class java.lang.Object

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

Constructor Detail

SubclassPCMapping

public SubclassPCMapping()

Method Detail

initialize

public void initialize(AbstractMemberMetaData fmd,
                       DatastoreContainerObject container,
                       ClassLoaderResolver clr)

Initialize this JavaTypeMapping with the given DatastoreAdapter for the given FieldMetaData.

Overrides:

initialize in class JavaTypeMapping

Parameters:

container - The datastore container storing this mapping (if any)

clr - the ClassLoaderResolver

fmd - FieldMetaData for the field to be mapped (if any)

prepareDatastoreMapping

protected void prepareDatastoreMapping(ClassLoaderResolver clr)

Convenience method to create a column for each implementation type of this reference.

Parameters:

clr - The ClassLoaderResolver

getJavaType

public Class getJavaType()

Description copied from class: JavaTypeMapping

Accessor for the java type being mapped. This is the java type that the mapping represents. Some examples :

• if the field is of type "MyClass" then the mapping will be OIDMapping (or subclass) the javaType will be OID, and the type will be MyClass.
• if the field is of type "int" then the mapping will be IntegerMapping, the javaType will be Integer, and the type will be int.

The "java type" is the java-type name used in the plugin.xml mapping file

Specified by:

getJavaType in class JavaTypeMapping

Returns:

The java type