{
log.error("Persistence unit for class : " + entityClass + " is not loaded");
throw new SchemaGenerationException("Persistence unit for class : " + entityClass
+ " is not loaded");
}
ForeignKey relationType = relation.getType();
// if relation type is one to many or join by primary key
if (targetEntityMetadata != null && relationType.equals(ForeignKey.ONE_TO_MANY)
&& relation.getJoinColumnName(kunderaMetadata) != null)
{
// if self association
if (targetEntityMetadata.equals(entityMetadata))
{
tableInfo.addColumnInfo(getJoinColumn(tableInfo, relation.getJoinColumnName(kunderaMetadata),
entityMetadata.getIdAttribute().getJavaType()));
}
else
{
String pu = targetEntityMetadata.getPersistenceUnit();
Type targetEntityType = targetEntityMetadata.getType();
Class idClass = targetEntityMetadata.getIdAttribute().getJavaType();
String idName = ((AbstractAttribute) targetEntityMetadata.getIdAttribute()).getJPAColumnName();
TableInfo targetTableInfo = new TableInfo(targetEntityMetadata.getTableName(),
targetEntityType.name(), idClass, idName);
// In case of different persistence unit. case for poly
// glot
// persistence.
if (!pu.equals(persistenceUnit))
{
List<TableInfo> targetTableInfos = getSchemaInfo(pu);
addJoinColumnToInfo(relation.getJoinColumnName(kunderaMetadata), targetTableInfo,
targetTableInfos, entityMetadata);
// add for newly discovered persistence unit.
puToSchemaMetadata.put(pu, targetTableInfos);
}
else
{
addJoinColumnToInfo(relation.getJoinColumnName(kunderaMetadata), targetTableInfo,
tableInfos, entityMetadata);
}
}
}
// if relation type is one to one or many to one.
else if (relation.isUnary() && relation.getJoinColumnName(kunderaMetadata) != null)
{
if (!relation.isJoinedByPrimaryKey())
{
tableInfo.addColumnInfo(getJoinColumn(tableInfo, relation.getJoinColumnName(kunderaMetadata),
targetEntityMetadata.getIdAttribute().getJavaType()));
}
}
// if relation type is many to many and relation via join table.
else if ((relationType.equals(ForeignKey.MANY_TO_MANY)) && (entityMetadata.isRelationViaJoinTable()))
{
JoinTableMetadata joinTableMetadata = relation.getJoinTableMetadata();
String joinTableName = joinTableMetadata != null ? joinTableMetadata.getJoinTableName() : null;
String joinColumnName = joinTableMetadata != null ? (String) joinTableMetadata.getJoinColumns()
.toArray()[0] : null;