/// <summary>
/// Updates this depth info to the next level.
/// </summary>
/// <param name="resOpt"></param>
/// <param name="isPolymorphic"></param>
/// <param name="arc"></param>
internal void UpdateToNextLevel(ResolveOptions resOpt, bool?isPolymorphic, AttributeResolutionContext arc = null)
{
AttributeResolutionDirectiveSet directives = resOpt.Directives;
bool isByRef = false;
this.MaxDepth = resOpt.MaxDepth;
// if using resolution guidance, read its properties first
if (arc != null)
{
if (arc.ResOpt != null)
{
directives = arc.ResOpt.Directives;
if (isPolymorphic == null)
{
isPolymorphic = directives?.Has("selectOne") == true;
}
}
if (arc.ResGuide?.entityByReference != null)
{
if (arc.ResGuide.entityByReference.referenceOnlyAfterDepth != null)
{
this.MaxDepth = (int)arc.ResGuide.entityByReference.referenceOnlyAfterDepth;
}
if (arc.ResGuide.entityByReference.allowReference == true)
{
isByRef = directives?.Has("referenceOnly") == true;
}
}
}
if (directives != null)
{
if (directives.Has("noMaxDepth"))
{
// no max? really? what if we loop forever? if you need more than 32 nested entities, then you should buy a different metadata description system
this.MaxDepth = MaxDepthLimit;
}
}
// if this is a polymorphic, then skip counting this entity in the depth, else count it
// if it's already by reference, we won't go one more level down so don't increase current depth
if (isPolymorphic != true && !isByRef)
{
this.CurrentDepth++;
if (this.CurrentDepth > this.MaxDepth)
{
this.MaxDepthExceeded = true;
}
}
}
internal override ResolvedAttributeSetBuilder ConstructResolvedAttributes(ResolveOptions resOpt, CdmAttributeContext under = null)
{
// find and cache the complete set of attributes
// attributes definitions originate from and then get modified by subsequent re-defintions from (in this order):
// the datatype used as an attribute, traits applied to that datatype,
// the purpose of the attribute, dynamic traits applied to the attribute.
ResolvedAttributeSetBuilder rasb = new ResolvedAttributeSetBuilder();
rasb.ResolvedAttributeSet.AttributeContext = under;
// add this attribute to the set
// make a new one and apply dynamic traits
ResolvedAttribute newAtt = new ResolvedAttribute(resOpt, this, this.Name, under as CdmAttributeContext);
rasb.OwnOne(newAtt);
ResolvedTraitSet rts = this.FetchResolvedTraits(resOpt);
// this context object holds all of the info about what needs to happen to resolve these attribute
// make a copy and add defaults if missing
CdmAttributeResolutionGuidance resGuideWithDefault;
if (this.ResolutionGuidance != null)
{
resGuideWithDefault = (CdmAttributeResolutionGuidance)this.ResolutionGuidance.Copy(resOpt);
}
else
{
resGuideWithDefault = new CdmAttributeResolutionGuidance(this.Ctx);
}
// renameFormat is not currently supported for type attributes
resGuideWithDefault.renameFormat = null;
resGuideWithDefault.UpdateAttributeDefaults(null, this);
AttributeResolutionContext arc = new AttributeResolutionContext(resOpt, resGuideWithDefault, rts);
// TODO: remove the resolution guidance if projection is being used
// from the traits of the datatype, purpose and applied here, see if new attributes get generated
rasb.ApplyTraits(arc);
rasb.GenerateApplierAttributes(arc, false); // false = don't apply these traits to added things
// this may have added symbols to the dependencies, so merge them
resOpt.SymbolRefSet.Merge(arc.ResOpt.SymbolRefSet);
if (this.Projection != null)
{
ProjectionDirective projDirective = new ProjectionDirective(resOpt, this);
ProjectionContext projCtx = this.Projection.ConstructProjectionContext(projDirective, under, rasb.ResolvedAttributeSet);
ResolvedAttributeSet ras = this.Projection.ExtractResolvedAttributes(projCtx, under);
rasb.ResolvedAttributeSet = ras;
}
return(rasb);
}
internal override ResolvedAttributeSetBuilder ConstructResolvedAttributes(ResolveOptions resOpt, CdmAttributeContext under = null)
{
// find and cache the complete set of attributes
// attributes definitions originate from and then get modified by subsequent re-definitions from (in this order):
// an extended entity, traits applied to extended entity, exhibited traits of main entity, the (datatype or entity) used as an attribute, traits applied to that datatype or entity,
// the relationsip of the attribute, the attribute definition itself and included attribute groups, dynamic traits applied to the attribute.
this.Rasb = new ResolvedAttributeSetBuilder();
this.Rasb.ResolvedAttributeSet.AttributeContext = under;
if (this.ExtendsEntity != null)
{
CdmObjectReference extRef = this.ExtendsEntityRef;
CdmAttributeContext extendsRefUnder = null;
AttributeContextParameters acpExtEnt = null;
if (under != null)
{
AttributeContextParameters acpExt = new AttributeContextParameters
{
under = under,
type = CdmAttributeContextType.EntityReferenceExtends,
Name = "extends",
Regarding = null,
IncludeTraits = false
};
extendsRefUnder = this.Rasb.ResolvedAttributeSet.CreateAttributeContext(resOpt, acpExt);
}
if (extRef.ExplicitReference != null && extRef.FetchObjectDefinition <CdmObjectDefinition>(resOpt).ObjectType == CdmObjectType.ProjectionDef)
{
// A Projection
CdmObjectDefinition extRefObjDef = extRef.FetchObjectDefinition <CdmObjectDefinition>(resOpt);
if (extendsRefUnder != null)
{
acpExtEnt = new AttributeContextParameters
{
under = extendsRefUnder,
type = CdmAttributeContextType.Projection,
Name = extRefObjDef.GetName(),
Regarding = extRef,
IncludeTraits = false
};
}
ProjectionDirective projDirective = new ProjectionDirective(resOpt, this, ownerRef: extRef);
CdmProjection projDef = (CdmProjection)extRefObjDef;
ProjectionContext projCtx = projDef.ConstructProjectionContext(projDirective, extendsRefUnder);
this.Rasb.ResolvedAttributeSet = projDef.ExtractResolvedAttributes(projCtx);
}
else
{
// An Entity Reference
if (extendsRefUnder != null)
{
// usually the extended entity is a reference to a name.
// it is allowed however to just define the entity inline.
acpExtEnt = new AttributeContextParameters
{
under = extendsRefUnder,
type = CdmAttributeContextType.Entity,
Name = extRef.NamedReference ?? extRef.ExplicitReference.GetName(),
Regarding = extRef,
IncludeTraits = false
};
}
// save moniker, extended entity may attach a different moniker that we do not
// want to pass along to getting this entities attributes
string oldMoniker = resOpt.FromMoniker;
this.Rasb.MergeAttributes((this.ExtendsEntityRef as CdmObjectReferenceBase).FetchResolvedAttributes(resOpt, acpExtEnt));
if (!resOpt.CheckAttributeCount(this.Rasb.ResolvedAttributeSet.ResolvedAttributeCount))
{
Logger.Error(nameof(CdmEntityDefinition), this.Ctx, $"Maximum number of resolved attributes reached for the entity: {this.EntityName}.");
return(null);
}
if (this.ExtendsEntityResolutionGuidance != null)
{
// some guidance was given on how to integrate the base attributes into the set. apply that guidance
ResolvedTraitSet rtsBase = this.FetchResolvedTraits(resOpt);
// this context object holds all of the info about what needs to happen to resolve these attributes.
// make a copy and set defaults if needed
CdmAttributeResolutionGuidance resGuide = (CdmAttributeResolutionGuidance)this.ExtendsEntityResolutionGuidance.Copy(resOpt);
resGuide.UpdateAttributeDefaults(resGuide.FetchObjectDefinitionName());
// holds all the info needed by the resolver code
AttributeResolutionContext arc = new AttributeResolutionContext(resOpt, resGuide, rtsBase);
this.Rasb.GenerateApplierAttributes(arc, false); // true = apply the prepared traits to new atts
}
// reset to the old moniker
resOpt.FromMoniker = oldMoniker;
}
}
this.Rasb.MarkInherited();
this.Rasb.ResolvedAttributeSet.AttributeContext = under;
if (this.Attributes != null)
{
int l = this.Attributes.Count;
for (int i = 0; i < l; i++)
{
dynamic att = this.Attributes.AllItems[i];
CdmAttributeContext attUnder = under;
AttributeContextParameters acpAtt = null;
if (under != null)
{
acpAtt = new AttributeContextParameters
{
under = under,
type = CdmAttributeContextType.AttributeDefinition,
Name = att.FetchObjectDefinitionName(),
Regarding = att,
IncludeTraits = false
};
}
this.Rasb.MergeAttributes(att.FetchResolvedAttributes(resOpt, acpAtt));
if (!resOpt.CheckAttributeCount(this.Rasb.ResolvedAttributeSet.ResolvedAttributeCount))
{
Logger.Error(nameof(CdmEntityDefinition), this.Ctx, $"Maximum number of resolved attributes reached for the entity: {this.EntityName}.");
return(null);
}
}
}
this.Rasb.MarkOrder();
this.Rasb.ResolvedAttributeSet.AttributeContext = under;
// things that need to go away
this.Rasb.RemoveRequestedAtts();
return(this.Rasb);
}
private RelationshipInfo GetRelationshipInfo(ResolveOptions resOpt, AttributeResolutionContext arc)
{
ResolvedTraitSet rts = null;
bool hasRef = false;
bool isByRef = false;
bool isArray = false;
bool selectsOne = false;
int? nextDepth = null;
bool maxDepthExceeded = false;
if (arc != null && arc.ResGuide != null)
{
if (arc.ResGuide.entityByReference != null && arc.ResGuide.entityByReference.allowReference == true)
hasRef = true;
if (arc.ResOpt.Directives != null)
{
// based on directives
if (hasRef)
isByRef = arc.ResOpt.Directives.Has("referenceOnly");
selectsOne = arc.ResOpt.Directives.Has("selectOne");
isArray = arc.ResOpt.Directives.Has("isArray");
}
// figure out the depth for the next level
int? oldDepth = resOpt.RelationshipDepth;
nextDepth = oldDepth;
// if this is a 'selectone', then skip counting this entity in the depth, else count it
if (!selectsOne)
{
// if already a ref, who cares?
if (!isByRef)
{
if (nextDepth == null)
nextDepth = 1;
else
nextDepth++;
// max comes from settings but may not be set
int maxDepth = 2;
if (hasRef && arc.ResGuide.entityByReference.referenceOnlyAfterDepth != null)
maxDepth = (int)arc.ResGuide.entityByReference.referenceOnlyAfterDepth;
if (nextDepth > maxDepth)
{
// don't do it
isByRef = true;
maxDepthExceeded = true;
}
}
}
}
return new RelationshipInfo
{
Rts = rts,
IsByRef = isByRef,
IsArray = isArray,
SelectsOne = selectsOne,
NextDepth = nextDepth,
MaxDepthExceeded = maxDepthExceeded
};
}
// the only thing we need this code for is testing!!!
public override ResolvedEntityReferenceSet FetchResolvedEntityReferences(ResolveOptions resOpt = null)
{
if (resOpt == null)
{
resOpt = new ResolveOptions(this);
}
ResolvedTraitSet rtsThisAtt = this.FetchResolvedTraits(resOpt);
CdmAttributeResolutionGuidance resGuide = (CdmAttributeResolutionGuidance)this.ResolutionGuidance;
// this context object holds all of the info about what needs to happen to resolve these attributes
AttributeResolutionContext arc = new AttributeResolutionContext(resOpt, resGuide, rtsThisAtt);
RelationshipInfo relInfo = this.GetRelationshipInfo(resOpt, arc);
if (relInfo.IsByRef && !relInfo.IsArray)
{
{
// only place this is used, so logic here instead of encapsulated.
// make a set and the one ref it will hold
ResolvedEntityReferenceSet rers = new ResolvedEntityReferenceSet(resOpt);
ResolvedEntityReference rer = new ResolvedEntityReference();
// referencing attribute(s) come from this attribute
rer.Referencing.ResolvedAttributeSetBuilder.MergeAttributes(this.FetchResolvedAttributes(resOpt, null));
Func<CdmEntityReference, ResolvedEntityReferenceSide> resolveSide = entRef =>
{
ResolvedEntityReferenceSide sideOther = new ResolvedEntityReferenceSide(null, null);
if (entRef != null)
{
// reference to the other entity, hard part is the attribue name.
// by convention, this is held in a trait that identifies the key
sideOther.Entity = entRef.FetchObjectDefinition<CdmEntityDefinition>(resOpt);
if (sideOther.Entity != null)
{
CdmAttribute otherAttribute;
ResolveOptions otherOpts = new ResolveOptions { WrtDoc = resOpt.WrtDoc, Directives = resOpt.Directives };
ResolvedTrait t = entRef.FetchResolvedTraits(otherOpts).Find(otherOpts, "is.identifiedBy");
if (t?.ParameterValues?.Length > 0)
{
dynamic otherRef = (t.ParameterValues.FetchParameterValueByName("attribute").Value);
if (typeof(CdmObject).IsAssignableFrom(otherRef?.GetType()))
{
otherAttribute = (otherRef as CdmObject).FetchObjectDefinition<CdmObjectDefinition>(otherOpts) as CdmAttribute;
if (otherAttribute != null)
{
sideOther.ResolvedAttributeSetBuilder.OwnOne(sideOther.Entity.FetchResolvedAttributes(otherOpts).Get(otherAttribute.GetName()).Copy());
}
}
}
}
}
return sideOther;
};
// either several or one entity
// for now, a sub for the 'select one' idea
if ((this.Entity as CdmEntityReference).ExplicitReference != null)
{
CdmEntityDefinition entPickFrom = (this.Entity as CdmEntityReference).FetchObjectDefinition<CdmEntityDefinition>(resOpt);
CdmCollection<CdmAttributeItem> attsPick = entPickFrom.GetAttributeDefinitions();
if (attsPick != null && attsPick != null)
{
for (int i = 0; i < attsPick.Count; i++)
{
if (attsPick.AllItems[i].ObjectType == CdmObjectType.EntityAttributeDef)
{
CdmEntityReference er = (attsPick.AllItems[i] as CdmEntityAttributeDefinition).Entity;
rer.Referenced.Add(resolveSide(er));
}
}
}
}
else
{
rer.Referenced.Add(resolveSide(this.Entity as CdmEntityReference));
}
rers.Set.Add(rer);
return rers;
}
}
return null;
}
internal override ResolvedAttributeSetBuilder ConstructResolvedAttributes(ResolveOptions resOpt, CdmAttributeContext under = null)
{
// find and cache the complete set of attributes
// attributes definitions originate from and then get modified by subsequent re-defintions from (in this order):
// the entity used as an attribute, traits applied to that entity,
// the purpose of the attribute, any traits applied to the attribute.
ResolvedAttributeSetBuilder rasb = new ResolvedAttributeSetBuilder();
CdmEntityReference ctxEnt = this.Entity as CdmEntityReference;
CdmAttributeContext underAtt = (CdmAttributeContext)under;
AttributeContextParameters acpEnt = null;
if (underAtt != null)
{
// make a context for this attreibute that holds the attributes that come up from the entity
acpEnt = new AttributeContextParameters
{
under = underAtt,
type = CdmAttributeContextType.Entity,
Name = ctxEnt.FetchObjectDefinitionName(),
Regarding = ctxEnt,
IncludeTraits = true
};
}
ResolvedTraitSet rtsThisAtt = this.FetchResolvedTraits(resOpt);
// this context object holds all of the info about what needs to happen to resolve these attributes.
// make a copy and add defaults if missing
CdmAttributeResolutionGuidance resGuideWithDefault;
if (this.ResolutionGuidance != null)
resGuideWithDefault = (CdmAttributeResolutionGuidance)this.ResolutionGuidance.Copy(resOpt);
else
resGuideWithDefault = new CdmAttributeResolutionGuidance(this.Ctx);
resGuideWithDefault.UpdateAttributeDefaults(this.Name);
AttributeResolutionContext arc = new AttributeResolutionContext(resOpt, resGuideWithDefault, rtsThisAtt);
// complete cheating but is faster.
// this purpose will remove all of the attributes that get collected here, so dumb and slow to go get them
RelationshipInfo relInfo = this.GetRelationshipInfo(arc.ResOpt, arc);
if (relInfo.IsByRef)
{
// make the entity context that a real recursion would have give us
if (under != null)
under = rasb.ResolvedAttributeSet.CreateAttributeContext(resOpt, acpEnt);
// if selecting from one of many attributes, then make a context for each one
if (under != null && relInfo.SelectsOne)
{
// the right way to do this is to get a resolved entity from the embedded entity and then
// look through the attribute context hierarchy for non-nested entityReferenceAsAttribute nodes
// that seems like a disaster waiting to happen given endless looping, etc.
// for now, just insist that only the top level entity attributes declared in the ref entity will work
CdmEntityDefinition entPickFrom = (this.Entity as CdmEntityReference).FetchObjectDefinition<CdmEntityDefinition>(resOpt) as CdmEntityDefinition;
CdmCollection<CdmAttributeItem> attsPick = entPickFrom?.GetAttributeDefinitions();
if (entPickFrom != null && attsPick != null)
{
for (int i = 0; i < attsPick.Count; i++)
{
if (attsPick.AllItems[i].ObjectType == CdmObjectType.EntityAttributeDef)
{
// a table within a table. as expected with a selectsOne attribute
// since this is by ref, we won't get the atts from the table, but we do need the traits that hold the key
// these are the same contexts that would get created if we recursed
// first this attribute
AttributeContextParameters acpEntAtt = new AttributeContextParameters
{
under = under,
type = CdmAttributeContextType.AttributeDefinition,
Name = attsPick.AllItems[i].FetchObjectDefinitionName(),
Regarding = attsPick.AllItems[i],
IncludeTraits = true
};
CdmAttributeContext pickUnder = rasb.ResolvedAttributeSet.CreateAttributeContext(resOpt, acpEntAtt);
CdmEntityReference pickEnt = (attsPick.AllItems[i] as CdmEntityAttributeDefinition).Entity as CdmEntityReference;
AttributeContextParameters acpEntAttEnt = new AttributeContextParameters
{
under = pickUnder,
type = CdmAttributeContextType.Entity,
Name = pickEnt.FetchObjectDefinitionName(),
Regarding = pickEnt,
IncludeTraits = true
};
rasb.ResolvedAttributeSet.CreateAttributeContext(resOpt, acpEntAttEnt);
}
}
}
}
// if we got here because of the max depth, need to impose the directives to make the trait work as expected
if (relInfo.MaxDepthExceeded)
{
if (arc.ResOpt.Directives == null)
arc.ResOpt.Directives = new AttributeResolutionDirectiveSet();
arc.ResOpt.Directives.Add("referenceOnly");
}
}
else
{
ResolveOptions resLink = CopyResolveOptions(resOpt);
resLink.SymbolRefSet = resOpt.SymbolRefSet;
resLink.RelationshipDepth = relInfo.NextDepth;
rasb.MergeAttributes((this.Entity as CdmEntityReference).FetchResolvedAttributes(resLink, acpEnt));
}
// from the traits of purpose and applied here, see if new attributes get generated
rasb.ResolvedAttributeSet.AttributeContext = underAtt;
rasb.ApplyTraits(arc);
rasb.GenerateApplierAttributes(arc, true); // true = apply the prepared traits to new atts
// this may have added symbols to the dependencies, so merge them
resOpt.SymbolRefSet.Merge(arc.ResOpt.SymbolRefSet);
// use the traits for linked entity identifiers to record the actual foreign key links
if (rasb.ResolvedAttributeSet?.Set != null && relInfo.IsByRef)
{
foreach (var att in rasb.ResolvedAttributeSet.Set)
{
var reqdTrait = att.ResolvedTraits.Find(resOpt, "is.linkedEntity.identifier");
if (reqdTrait == null)
{
continue;
}
if (reqdTrait.ParameterValues == null || reqdTrait.ParameterValues.Length == 0)
{
Logger.Warning(nameof(CdmEntityAttributeDefinition), this.Ctx as ResolveContext, "is.linkedEntity.identifier does not support arguments");
continue;
}
var entReferences = new List<string>();
var attReferences = new List<string>();
Action<CdmEntityReference, string> addEntityReference = (CdmEntityReference entRef, string nameSpace) =>
{
var entDef = entRef.FetchObjectDefinition<CdmEntityDefinition>(resOpt);
var identifyingTrait = entRef.FetchResolvedTraits(resOpt).Find(resOpt, "is.identifiedBy");
if (identifyingTrait != null && entDef != null)
{
var attRef = identifyingTrait.ParameterValues.FetchParameterValueByName("attribute").Value;
string attNamePath = ((CdmObjectReferenceBase)attRef).NamedReference;
string attName = attNamePath.Split('/').Last(); // path should be absolute and without a namespace
string relativeEntPath = Ctx.Corpus.Storage.CreateAbsoluteCorpusPath(entDef.AtCorpusPath, entDef.InDocument);
if (relativeEntPath.StartsWith($"{nameSpace}:"))
{
relativeEntPath = relativeEntPath.Substring(nameSpace.Length + 1);
}
entReferences.Add(relativeEntPath);
attReferences.Add(attName);
}
};
if (relInfo.SelectsOne)
{
var entPickFrom = (this.Entity as CdmEntityReference).FetchObjectDefinition<CdmEntityDefinition>(resOpt) as CdmEntityDefinition;
var attsPick = entPickFrom?.GetAttributeDefinitions()?.Cast<CdmObject>().ToList();
if (entPickFrom != null && attsPick != null)
{
for (int i = 0; i < attsPick.Count; i++)
{
if (attsPick[i].ObjectType == CdmObjectType.EntityAttributeDef)
{
var entAtt = attsPick[i] as CdmEntityAttributeDefinition;
addEntityReference(entAtt.Entity, this.InDocument.Namespace);
}
}
}
}
else
{
addEntityReference(this.Entity, this.InDocument.Namespace);
}
var constantEntity = this.Ctx.Corpus.MakeObject<CdmConstantEntityDefinition>(CdmObjectType.ConstantEntityDef);
constantEntity.EntityShape = this.Ctx.Corpus.MakeRef<CdmEntityReference>(CdmObjectType.EntityRef, "entityGroupSet", true);
constantEntity.ConstantValues = entReferences.Select((entRef, idx) => new List<string> { entRef, attReferences[idx] }).ToList();
var traitParam = this.Ctx.Corpus.MakeRef<CdmEntityReference>(CdmObjectType.EntityRef, constantEntity, false);
reqdTrait.ParameterValues.SetParameterValue(resOpt, "entityReferences", traitParam);
}
}
// a 'structured' directive wants to keep all entity attributes together in a group
if (arc.ResOpt.Directives?.Has("structured") == true)
{
ResolvedAttribute raSub = new ResolvedAttribute(rtsThisAtt.ResOpt, rasb.ResolvedAttributeSet, this.Name, (CdmAttributeContext)rasb.ResolvedAttributeSet.AttributeContext);
if (relInfo.IsArray)
{
// put a resolved trait on this att group, yuck, hope I never need to do this again and then need to make a function for this
CdmTraitReference tr = this.Ctx.Corpus.MakeObject<CdmTraitReference>(CdmObjectType.TraitRef, "is.linkedEntity.array", true);
var t = tr.FetchObjectDefinition<CdmTraitDefinition>(resOpt);
ResolvedTrait rt = new ResolvedTrait(t, null, new List<dynamic>(), new List<bool>());
raSub.ResolvedTraits = raSub.ResolvedTraits.Merge(rt, true);
}
rasb = new ResolvedAttributeSetBuilder();
rasb.OwnOne(raSub);
}
return rasb;
}
private RelationshipInfo GetRelationshipInfo(ResolveOptions resOpt, AttributeResolutionContext arc)
{
ResolvedTraitSet rts = null;
bool noMaxDepth = false;
bool hasRef = false;
bool isByRef = false;
bool isArray = false;
bool selectsOne = false;
int? nextDepth = null;
bool maxDepthExceeded = false;
if (arc != null && arc.ResGuide != null)
{
if (arc.ResGuide.entityByReference != null && arc.ResGuide.entityByReference.allowReference == true)
{
hasRef = true;
}
if (arc.ResOpt.Directives != null)
{
noMaxDepth = arc.ResOpt.Directives.Has("noMaxDepth");
// based on directives
if (hasRef)
{
isByRef = arc.ResOpt.Directives.Has("referenceOnly");
}
selectsOne = arc.ResOpt.Directives.Has("selectOne");
isArray = arc.ResOpt.Directives.Has("isArray");
}
// figure out the depth for the next level
int?oldDepth = resOpt.RelationshipDepth;
nextDepth = oldDepth;
// if this is a 'selectone', then skip counting this entity in the depth, else count it
if (!selectsOne)
{
// if already a ref, who cares?
if (!isByRef)
{
if (nextDepth == null)
{
nextDepth = 1;
}
else
{
nextDepth++;
}
// max comes from settings but may not be set
int maxDepth = 2;
if (hasRef && arc.ResGuide.entityByReference.referenceOnlyAfterDepth != null)
{
maxDepth = (int)arc.ResGuide.entityByReference.referenceOnlyAfterDepth;
}
if (noMaxDepth)
{
maxDepth = 32; // no max? really? what if we loop forever? if you need more than 32 nested entities, then you should buy a different metadata description system.
}
if (nextDepth > maxDepth)
{
// don't do it
isByRef = true;
maxDepthExceeded = true;
}
}
}
}
return(new RelationshipInfo
{
Rts = rts,
IsByRef = isByRef,
IsArray = isArray,
SelectsOne = selectsOne,
NextDepth = nextDepth,
MaxDepthExceeded = maxDepthExceeded
});
}
internal override ResolvedAttributeSetBuilder ConstructResolvedAttributes(ResolveOptions resOpt, CdmAttributeContext under = null)
{
// find and cache the complete set of attributes
// attributes definitions originate from and then get modified by subsequent re-definitions from (in this order):
// an extended entity, traits applied to extended entity, exhibited traits of main entity, the (datatype or entity) used as an attribute, traits applied to that datatype or entity,
// the relationsip of the attribute, the attribute definition itself and included attribute groups, dynamic traits applied to the attribute.
this.Rasb = new ResolvedAttributeSetBuilder();
this.Rasb.ResolvedAttributeSet.AttributeContext = under;
if (this.ExtendsEntity != null)
{
CdmObjectReference extRef = this.ExtendsEntityRef;
CdmAttributeContext extendsRefUnder = null;
AttributeContextParameters acpExtEnt = null;
if (under != null)
{
AttributeContextParameters acpExt = new AttributeContextParameters
{
under = under,
type = CdmAttributeContextType.EntityReferenceExtends,
Name = "extends",
Regarding = null,
IncludeTraits = false
};
extendsRefUnder = this.Rasb.ResolvedAttributeSet.CreateAttributeContext(resOpt, acpExt);
acpExtEnt = new AttributeContextParameters
{
under = extendsRefUnder,
type = CdmAttributeContextType.Entity,
Name = extRef.NamedReference,
Regarding = extRef,
IncludeTraits = false
};
}
// save moniker, extended entity may attach a different moniker that we do not
// want to pass along to getting this entities attributes
string oldMoniker = resOpt.FromMoniker;
this.Rasb.MergeAttributes((this.ExtendsEntityRef as CdmObjectReferenceBase).FetchResolvedAttributes(resOpt, acpExtEnt));
if (this.ExtendsEntityResolutionGuidance != null)
{
// some guidance was given on how to integrate the base attributes into the set. apply that guidance
ResolvedTraitSet rtsBase = this.FetchResolvedTraits(resOpt);
// this context object holds all of the info about what needs to happen to resolve these attributes.
// make a copy and set defaults if needed
CdmAttributeResolutionGuidance resGuide = (CdmAttributeResolutionGuidance)this.ExtendsEntityResolutionGuidance.Copy(resOpt);
resGuide.UpdateAttributeDefaults(resGuide.FetchObjectDefinitionName());
// holds all the info needed by the resolver code
AttributeResolutionContext arc = new AttributeResolutionContext(resOpt, resGuide, rtsBase);
this.Rasb.GenerateApplierAttributes(arc, false); // true = apply the prepared traits to new atts
}
// reset to the old moniker
resOpt.FromMoniker = oldMoniker;
}
this.Rasb.MarkInherited();
this.Rasb.ResolvedAttributeSet.AttributeContext = under;
if (this.Attributes != null)
{
int l = this.Attributes.Count;
for (int i = 0; i < l; i++)
{
dynamic att = this.Attributes.AllItems[i];
CdmAttributeContext attUnder = under;
AttributeContextParameters acpAtt = null;
if (under != null)
{
acpAtt = new AttributeContextParameters
{
under = under,
type = CdmAttributeContextType.AttributeDefinition,
Name = att.FetchObjectDefinitionName(),
Regarding = att,
IncludeTraits = false
};
}
this.Rasb.MergeAttributes(att.FetchResolvedAttributes(resOpt, acpAtt));
}
}
this.Rasb.MarkOrder();
this.Rasb.ResolvedAttributeSet.AttributeContext = under;
// things that need to go away
this.Rasb.RemoveRequestedAtts();
return(this.Rasb);
}
