protected virtual void Init()
{
start = 0;
end = 0;
// for instance, only manage index for one field query using 'equal'
if (classInfo.HasIndex() && query.HasCriteria() && CanUseIndex(query.GetCriteria(
)))
{
NeoDatis.Tool.Wrappers.List.IOdbList <string> fields = query.GetAllInvolvedFields(
);
if (fields.IsEmpty())
{
useIndex = false;
}
else
{
int[] fieldIds = GetAllInvolvedFieldIds(fields);
classInfoIndex = classInfo.GetIndexForAttributeIds(fieldIds);
if (classInfoIndex != null)
{
useIndex = true;
}
}
}
// Keep the detail
details = GetDetails();
}
public override bool MatchObjectWithOid(NeoDatis.Odb.OID oid, bool returnObject,
bool inMemory)
{
currentOid = oid;
ITmpCache tmpCache = session.GetTmpCache();
ObjectInfoHeader oih = null;
try
{
if (!criteriaQuery.HasCriteria())
{
// true, false = use cache, false = do not return object
// TODO Warning setting true to useCache will put all objects in
// the cache
// This is not a good idea for big queries!, But use cache=true
// resolves when object have not been committed yet!
// for big queries, user should use a LazyCache!
if (inMemory)
{
currentNnoi = objectReader.ReadNonNativeObjectInfoFromOid(classInfo, currentOid,
true, returnObject);
if (currentNnoi.IsDeletedObject())
{
return(false);
}
currentOid = currentNnoi.GetOid();
nextOID = currentNnoi.GetNextObjectOID();
}
else
{
oih = objectReader.ReadObjectInfoHeaderFromOid(currentOid, false);
nextOID = oih.GetNextObjectOID();
}
return(true);
}
// Gets a map with the values with the fields involved in the query
AttributeValuesMap attributeValues = objectReader.ReadObjectInfoValuesFromOID(classInfo, currentOid, true, involvedFields, involvedFields
, 0, criteriaQuery.GetOrderByFieldNames());
// Then apply the query on the field values
bool objectMatches = CriteriaQueryManager.Match(criteriaQuery, attributeValues);
if (objectMatches)
{
// Then load the entire object
// true, false = use cache
currentNnoi = objectReader.ReadNonNativeObjectInfoFromOid(classInfo, currentOid,
true, returnObject);
currentOid = currentNnoi.GetOid();
}
oih = attributeValues.GetObjectInfoHeader();
// Stores the next position
nextOID = oih.GetNextObjectOID();
return(objectMatches);
}
finally
{
tmpCache.ClearObjectInfos();
}
}
