org.datanucleus.store.rdbms.mapping.java

Class EmbeddedPCMapping

java.lang.Object

org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping

org.datanucleus.store.rdbms.mapping.java.SingleFieldMapping

org.datanucleus.store.rdbms.mapping.java.EmbeddedMapping

org.datanucleus.store.rdbms.mapping.java.EmbeddedPCMapping

All Implemented Interfaces:

MappingCallbacks

public class EmbeddedPCMapping
extends EmbeddedMapping
implements MappingCallbacks

Mapping for a PC object embedded within another PC object (1-1 relation). Provides mapping for a single Java type (the PC type) to multiple datastore columns. Allows for nested embedded fields. Implements MappingCallbacks since if we are embedding a MappingCallbacks field (e.g a BLOB on Oracle) then we need in turn to call the underlying MappingCallbacks methods.

Field Summary

Fields inherited from class org.datanucleus.store.rdbms.mapping.java.EmbeddedMapping

clr, discrimMapping, discrimMetaData, embCmd, emd, javaTypeMappings, objectType, typeName

Fields inherited from class org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping

absFieldNumber, datastoreMappings, mmd, referenceMapping, roleForMember, storeMgr, table, type

Constructor Summary

Constructors

Constructor and Description
EmbeddedPCMapping()

Method Summary

Modifier and Type	Method and Description
void	initialize(org.datanucleus.metadata.AbstractMemberMetaData mmd, Table table, org.datanucleus.ClassLoaderResolver clr) Initialize this JavaTypeMapping with the given DatastoreAdapter for the given metadata.
void	insertPostProcessing(org.datanucleus.state.ObjectProvider op) Hook so that we can handle any post-processing on the insert of a particular field.
void	postFetch(org.datanucleus.state.ObjectProvider op) MappingCallback called when the owning object is being fetched.
void	postInsert(org.datanucleus.state.ObjectProvider op) MappingCallback called when the owning object has just being inserted.
void	postUpdate(org.datanucleus.state.ObjectProvider op) MappingCallback called when the owning object has just being udpated.
void	preDelete(org.datanucleus.state.ObjectProvider op) MappingCallback called when the owning object is about to be deleted.

Methods inherited from class org.datanucleus.store.rdbms.mapping.java.EmbeddedMapping

addJavaTypeMapping, getDiscriminatorMapping, getJavaType, getJavaTypeMapping, getJavaTypeMapping, getNumberOfJavaTypeMappings, getObject, getObject, initialize, prepareDatastoreMapping, setObject, setObject

Methods inherited from class org.datanucleus.store.rdbms.mapping.java.SingleFieldMapping

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

Methods inherited from class org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping

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

Methods inherited from class java.lang.Object

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

Constructor Detail

EmbeddedPCMapping

public EmbeddedPCMapping()

Method Detail

initialize

public void initialize(org.datanucleus.metadata.AbstractMemberMetaData mmd,
                       Table table,
                       org.datanucleus.ClassLoaderResolver clr)

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

Overrides:

initialize in class EmbeddedMapping

Parameters:

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

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

clr - the ClassLoaderResolver

insertPostProcessing

public void insertPostProcessing(org.datanucleus.state.ObjectProvider op)

Description copied from interface: MappingCallbacks

Hook so that we can handle any post-processing on the insert of a particular field. For example with Oracle we need to insert "EMPTY_CLOB" and then immediately after do a SELECT of it and update the contents of the CLOB/BLOB.

Specified by:

insertPostProcessing in interface MappingCallbacks

Parameters:

op - ObjectProvider

postFetch

public void postFetch(org.datanucleus.state.ObjectProvider op)

MappingCallback called when the owning object is being fetched.

Specified by:

postFetch in interface MappingCallbacks

Parameters:

op - ObjectProvider of the owning object

postInsert

public void postInsert(org.datanucleus.state.ObjectProvider op)

MappingCallback called when the owning object has just being inserted.

Specified by:

postInsert in interface MappingCallbacks

Parameters:

op - ObjectProvider of the owning object

postUpdate

public void postUpdate(org.datanucleus.state.ObjectProvider op)

MappingCallback called when the owning object has just being udpated.

Specified by:

postUpdate in interface MappingCallbacks

Parameters:

op - ObjectProvider of the owning object

preDelete

public void preDelete(org.datanucleus.state.ObjectProvider op)

MappingCallback called when the owning object is about to be deleted.

Specified by:

preDelete in interface MappingCallbacks

Parameters:

op - ObjectProvider of the owning object