protected void AddRelationRowCache(RelationRowCache cache, int relno, RelationKey relKey, Object relationRow, bool canCache)
{
if (canCache)
{
cache.AddRelationRow(relno, relKey, relationRow);
}
}
protected void Handle(IDataReader dataReader, System.Collections.IList list)
{
// Lazy initialization because if the result is zero, the resources are unused.
System.Collections.IList columnNames = null;
IColumnMetaData[] columns = null;
IDictionary <String, IDictionary <String, IPropertyType> > relationPropertyCache = null;
RelationRowCache relRowCache = null;
int relSize = BeanMetaData.RelationPropertyTypeSize;
bool hasCB = HasConditionBean();
bool skipRelationLoop;
{
bool emptyRelation = IsSelectedForeignInfoEmpty();
bool hasOSC = HasOutsideSqlContext();
bool specifiedOutsideSql = IsSpecifiedOutsideSql();
// If it has condition-bean that has no relation to get
// or it has outside-sql context that is specified-outside-sql,
// they are unnecessary to do relation loop!
skipRelationLoop = (hasCB && emptyRelation) || (hasOSC && specifiedOutsideSql);
}
bool canCache = hasCB && CanRelationMappingCache();
Map <String, int?> selectIndexMap = GetSelectIndexMap();
while (dataReader.Read())
{
if (columnNames == null)
{
columnNames = CreateColumnNames(dataReader.GetSchemaTable());
}
if (columns == null)
{
columns = CreateColumnMetaData(columnNames);
}
// Create row instance of base table by row property cache.
Object row = CreateRow(dataReader, columns);
if (skipRelationLoop)
{
PostCreateRow(row, BeanMetaData);
list.Add(row);
continue;
}
if (relationPropertyCache == null)
{
relationPropertyCache = CreateRelationPropertyCache(columnNames);
}
if (relRowCache == null)
{
relRowCache = new RelationRowCache(relSize);
}
for (int i = 0; i < relSize; ++i)
{
IRelationPropertyType rpt = BeanMetaData.GetRelationPropertyType(i);
if (rpt == null)
{
continue;
}
// Do only selected foreign property for performance if condition-bean exists.
if (hasCB && !HasSelectedForeignInfo(BuildRelationNoSuffix(rpt)))
{
continue;
}
Object relationRow = null;
System.Collections.Hashtable relKeyValues = new System.Collections.Hashtable();
RelationKey relKey = CreateRelationKey(dataReader, rpt, columnNames, relKeyValues, selectIndexMap);
if (relKey != null)
{
relationRow = GetCachedRelationRow(relRowCache, i, relKey, canCache);
if (relationRow == null)
{
relationRow = CreateRelationRow(dataReader, rpt, columnNames, relKeyValues, relationPropertyCache);
if (relationRow != null)
{
AddRelationRowCache(relRowCache, i, relKey, relationRow, canCache);
PostCreateRow(relationRow, rpt.BeanMetaData);
}
}
}
if (relationRow != null)
{
PropertyInfo pi = rpt.PropertyInfo;
pi.SetValue(row, relationRow, null);
}
}
PostCreateRow(row, BeanMetaData);
list.Add(row);
}
}
protected Object GetCachedRelationRow(RelationRowCache cache, int relno, RelationKey relKey, bool canCache)
{
return(canCache ? cache.GetRelationRow(relno, relKey) : null);
}
