/** Whether our configuration state includes the given field. */
private boolean includes(FieldMetaData fmd) {
if ((hasFetchGroupDefault() && fmd.isInDefaultFetchGroup())
|| hasFetchGroupAll()
|| hasField(fmd.getFullName(false))
|| hasExtendedLookupPath(fmd)) return true;
String[] fgs = fmd.getCustomFetchGroups();
for (int i = 0; i < fgs.length; i++) if (hasFetchGroup(fgs[i])) return true;
return false;
}
public FetchConfiguration traverse(FieldMetaData fm) {
Class<?> type = fm.getRelationType();
if (type == null) return this;
FetchConfigurationImpl clone = newInstance(_state);
clone._parent = this;
clone._availableDepth = reduce(_availableDepth);
clone._fromField = fm.getFullName(false);
clone._fromType = type;
clone._availableRecursion = getAvailableRecursionDepth(fm, type, fm.getFullName(false), true);
if (StringUtils.equals(_directRelationOwner, fm.getFullName(false))) clone._load = false;
else clone._load = _load;
FieldMetaData owner = fm.getMappedByMetaData();
if (owner != null && owner.getTypeCode() == JavaTypes.PC)
clone._directRelationOwner = owner.getFullName(false);
return clone;
}
public int requiresFetch(FieldMetaData fm) {
if (!includes(fm)) return FETCH_NONE;
Class<?> type = fm.getRelationType();
if (type == null) return FETCH_LOAD;
if (_availableDepth == 0) return FETCH_NONE;
// we can skip calculating recursion depth if this is a top-level conf:
// the field is in our fetch groups, so can't possibly not select
if (_parent == null) return FETCH_LOAD;
String fieldName = fm.getFullName(false);
int rdepth = getAvailableRecursionDepth(fm, type, fieldName, false);
if (rdepth != FetchGroup.DEPTH_INFINITE && rdepth <= 0) return FETCH_NONE;
if (StringUtils.equals(_directRelationOwner, fieldName)) return FETCH_REF;
return FETCH_LOAD;
}
