/**
* Accessor for the expected foreign keys for this table.
*
* @param clr The ClassLoaderResolver
* @return The expected foreign keys.
*/
public List getExpectedForeignKeys(ClassLoaderResolver clr) {
assertIsInitialized();
boolean autoMode = false;
if (storeMgr
.getStringProperty(RDBMSPropertyNames.PROPERTY_RDBMS_CONSTRAINT_CREATE_MODE)
.equals("DataNucleus")) {
autoMode = true;
}
ArrayList foreignKeys = new ArrayList();
try {
// FK from join table to owner table
DatastoreClass referencedTable = storeMgr.getDatastoreClass(ownerType, clr);
if (referencedTable != null) {
// Take <foreign-key> from <join>
ForeignKeyMetaData fkmd = null;
if (mmd.getJoinMetaData() != null) {
fkmd = mmd.getJoinMetaData().getForeignKeyMetaData();
}
if (fkmd != null || autoMode) {
ForeignKey fk = new ForeignKey(ownerMapping, dba, referencedTable, true);
fk.setForMetaData(fkmd);
foreignKeys.add(fk);
}
}
if (!isSerialisedValuePC()) {
if (isEmbeddedValuePC()) {
// Add any FKs for the fields of the (embedded) value
EmbeddedValuePCMapping embMapping = (EmbeddedValuePCMapping) valueMapping;
for (int i = 0; i < embMapping.getNumberOfJavaTypeMappings(); i++) {
JavaTypeMapping embFieldMapping = embMapping.getJavaTypeMapping(i);
AbstractMemberMetaData embFmd = embFieldMapping.getMemberMetaData();
if (ClassUtils.isReferenceType(embFmd.getType())
&& embFieldMapping instanceof ReferenceMapping) {
// Field is a reference type, so add a FK to the table of the PC for each PC
// implementation
Collection fks =
TableUtils.getForeignKeysForReferenceField(
embFieldMapping, embFmd, autoMode, storeMgr, clr);
foreignKeys.addAll(fks);
} else if (storeMgr
.getNucleusContext()
.getMetaDataManager()
.getMetaDataForClass(embFmd.getType(), clr)
!= null
&& embFieldMapping.getNumberOfDatastoreMappings() > 0
&& embFieldMapping instanceof PersistableMapping) {
// Field is for a PC class with the FK at this side, so add a FK to the table of this
// PC
ForeignKey fk =
TableUtils.getForeignKeyForPCField(
embFieldMapping, embFmd, autoMode, storeMgr, clr);
if (fk != null) {
foreignKeys.add(fk);
}
}
}
} else if (mmd.getMap().valueIsPersistent()) {
// FK from join table to value table
referencedTable = storeMgr.getDatastoreClass(mmd.getMap().getValueType(), clr);
if (referencedTable != null) {
// Take <foreign-key> from <value>
ForeignKeyMetaData fkmd = null;
if (mmd.getValueMetaData() != null) {
fkmd = mmd.getValueMetaData().getForeignKeyMetaData();
}
if (fkmd != null || autoMode) {
ForeignKey fk = new ForeignKey(valueMapping, dba, referencedTable, true);
fk.setForMetaData(fkmd);
foreignKeys.add(fk);
}
}
}
}
if (!isSerialisedKeyPC()) {
if (isEmbeddedKeyPC()) {
// Add any FKs for the fields of the (embedded) key
EmbeddedKeyPCMapping embMapping = (EmbeddedKeyPCMapping) keyMapping;
for (int i = 0; i < embMapping.getNumberOfJavaTypeMappings(); i++) {
JavaTypeMapping embFieldMapping = embMapping.getJavaTypeMapping(i);
AbstractMemberMetaData embFmd = embFieldMapping.getMemberMetaData();
if (ClassUtils.isReferenceType(embFmd.getType())
&& embFieldMapping instanceof ReferenceMapping) {
// Field is a reference type, so add a FK to the table of the PC for each PC
// implementation
Collection fks =
TableUtils.getForeignKeysForReferenceField(
embFieldMapping, embFmd, autoMode, storeMgr, clr);
foreignKeys.addAll(fks);
} else if (storeMgr
.getNucleusContext()
.getMetaDataManager()
.getMetaDataForClass(embFmd.getType(), clr)
!= null
&& embFieldMapping.getNumberOfDatastoreMappings() > 0
&& embFieldMapping instanceof PersistableMapping) {
// Field is for a PC class with the FK at this side, so add a FK to the table of this
// PC
ForeignKey fk =
TableUtils.getForeignKeyForPCField(
embFieldMapping, embFmd, autoMode, storeMgr, clr);
if (fk != null) {
foreignKeys.add(fk);
}
}
}
} else if (mmd.getMap().keyIsPersistent()) {
// FK from join table to key table
referencedTable = storeMgr.getDatastoreClass(mmd.getMap().getKeyType(), clr);
if (referencedTable != null) {
// Take <foreign-key> from <key>
ForeignKeyMetaData fkmd = null;
if (mmd.getKeyMetaData() != null) {
fkmd = mmd.getKeyMetaData().getForeignKeyMetaData();
}
if (fkmd != null || autoMode) {
ForeignKey fk = new ForeignKey(keyMapping, dba, referencedTable, true);
fk.setForMetaData(fkmd);
foreignKeys.add(fk);
}
}
}
}
} catch (NoTableManagedException e) {
// expected when no table exists
}
return foreignKeys;
}
