/// <inheritdoc />
internal override ProjectionAttributeStateSet AppendProjectionAttributeState(
ProjectionContext projCtx,
ProjectionAttributeStateSet projOutputSet,
CdmAttributeContext attrCtx)
{
// Create a new attribute context for the operation
AttributeContextParameters attrCtxOpCombineAttrsParam = new AttributeContextParameters
{
under = attrCtx,
type = CdmAttributeContextType.OperationCombineAttributes,
Name = $"operation/index{Index}/operationCombineAttributes"
};
CdmAttributeContext attrCtxOpCombineAttrs = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxOpCombineAttrsParam);
// Initialize a projection attribute context tree builder with the created attribute context for the operation
ProjectionAttributeContextTreeBuilder attrCtxTreeBuilder = new ProjectionAttributeContextTreeBuilder(attrCtxOpCombineAttrs);
// Get all the leaf level PAS nodes from the tree for each selected attribute and cache to a dictionary
Dictionary <string, List <ProjectionAttributeState> > leafLevelCombineAttributeNames = new Dictionary <string, List <ProjectionAttributeState> >();
// Also, create a single list of leaf level PAS
List <ProjectionAttributeState> leafLevelMergePASList = new List <ProjectionAttributeState>();
foreach (string select in this.Select)
{
List <ProjectionAttributeState> leafLevelListForCurrentSelect = ProjectionResolutionCommonUtil.GetLeafList(projCtx, select);
if (leafLevelListForCurrentSelect != null &&
leafLevelListForCurrentSelect.Count > 0 &&
!leafLevelCombineAttributeNames.ContainsKey(select))
{
leafLevelCombineAttributeNames.Add(select, leafLevelListForCurrentSelect);
leafLevelMergePASList.AddRange(leafLevelListForCurrentSelect);
}
}
// Create a List of top-level PAS objects that will be get merged based on the selected attributes
List <ProjectionAttributeState> pasMergeList = new List <ProjectionAttributeState>();
// Run through the top-level PAS objects
foreach (ProjectionAttributeState currentPAS in projCtx.CurrentAttributeStateSet.States)
{
if (leafLevelCombineAttributeNames.ContainsKey(currentPAS.CurrentResolvedAttribute.ResolvedName))
{
// Attribute to Merge
if (!pasMergeList.Contains(currentPAS))
{
pasMergeList.Add(currentPAS);
}
}
else
{
// Attribute to Pass Through
// Create a projection attribute state for the non-selected / pass-through attribute by creating a copy of the current state
// Copy() sets the current state as the previous state for the new one
ProjectionAttributeState newPAS = currentPAS.Copy();
projOutputSet.Add(newPAS);
}
}
if (pasMergeList.Count > 0)
{
CdmTypeAttributeDefinition mergeIntoAttribute = this.MergeInto as CdmTypeAttributeDefinition;
// the merged attribute needs one new place to live, so here it is
AttributeContextParameters mergedAttrCtxParam = new AttributeContextParameters
{
under = attrCtxOpCombineAttrs,
type = CdmAttributeContextType.AttributeDefinition,
Name = mergeIntoAttribute.GetName()
};
CdmAttributeContext mergedAttrCtx = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, mergedAttrCtxParam);
// Create new resolved attribute, set the new attribute as target
ResolvedAttribute raNewMergeInto = CreateNewResolvedAttribute(projCtx, mergedAttrCtx, mergeIntoAttribute, null);
// Create new output projection attribute state set
ProjectionAttributeState newMergeIntoPAS = new ProjectionAttributeState(projOutputSet.Ctx)
{
CurrentResolvedAttribute = raNewMergeInto,
PreviousStateList = pasMergeList
};
// Create the attribute context parameters and just store it in the builder for now
// We will create the attribute contexts at the end
foreach (string select in leafLevelCombineAttributeNames.Keys)
{
if (leafLevelCombineAttributeNames.ContainsKey(select) &&
leafLevelCombineAttributeNames[select] != null &&
leafLevelCombineAttributeNames[select].Count > 0)
{
foreach (ProjectionAttributeState leafLevelForSelect in leafLevelCombineAttributeNames[select])
{
attrCtxTreeBuilder.CreateAndStoreAttributeContextParameters(select, leafLevelForSelect, newMergeIntoPAS.CurrentResolvedAttribute,
CdmAttributeContextType.AttributeDefinition,
leafLevelForSelect.CurrentResolvedAttribute.AttCtx, // lineage is the source att
newMergeIntoPAS.CurrentResolvedAttribute.AttCtx); // merge into points back here
}
}
}
projOutputSet.Add(newMergeIntoPAS);
}
// Create all the attribute contexts and construct the tree
attrCtxTreeBuilder.ConstructAttributeContextTree(projCtx);
return(projOutputSet);
}
/// <summary>
/// A function to construct projection context and populate the resolved attribute set that ExtractResolvedAttributes method can then extract
/// This function is the entry point for projection resolution.
/// This function is expected to do the following 3 things:
/// - Create an condition expression tree & default if appropriate
/// - Create and initialize Projection Context
/// - Process operations
/// </summary>
/// <param name="projDirective"></param>
/// <param name="attrCtx"></param>
/// <returns></returns>
internal ProjectionContext ConstructProjectionContext(ProjectionDirective projDirective, CdmAttributeContext attrCtx)
{
ProjectionContext projContext = null;
if (string.IsNullOrWhiteSpace(this.Condition))
{
// if no condition is provided, get default condition and persist
this.Condition = ConditionExpression.GetDefaultConditionExpression(this.Operations, this.Owner);
}
// create an expression tree based on the condition
ExpressionTree tree = new ExpressionTree();
this.ConditionExpressionTreeRoot = tree.ConstructExpressionTree(this.Condition);
if (this.ConditionExpressionTreeRoot == null)
{
Logger.Info(nameof(CdmProjection), this.Ctx, $"Optional expression missing. Implicit expression will automatically apply.", nameof(ConstructProjectionContext));
}
if (attrCtx != null)
{
// Add projection to context tree
AttributeContextParameters acpProj = new AttributeContextParameters
{
under = attrCtx,
type = CdmAttributeContextType.Projection,
Name = this.FetchObjectDefinitionName(),
Regarding = projDirective.OwnerRef,
IncludeTraits = false
};
CdmAttributeContext acProj = CdmAttributeContext.CreateChildUnder(projDirective.ResOpt, acpProj);
AttributeContextParameters acpSource = new AttributeContextParameters
{
under = acProj,
type = CdmAttributeContextType.Source,
Name = "source",
Regarding = null,
IncludeTraits = false
};
CdmAttributeContext acSource = CdmAttributeContext.CreateChildUnder(projDirective.ResOpt, acpSource);
if (this.Source.FetchObjectDefinition <CdmObjectDefinition>(projDirective.ResOpt).ObjectType == CdmObjectType.ProjectionDef)
{
// A Projection
projContext = ((CdmProjection)this.Source.ExplicitReference).ConstructProjectionContext(projDirective, acSource);
}
else
{
// An Entity Reference
AttributeContextParameters acpSourceProjection = new AttributeContextParameters
{
under = acSource,
type = CdmAttributeContextType.Entity,
Name = this.Source.NamedReference ?? this.Source.ExplicitReference.GetName(),
Regarding = this.Source,
IncludeTraits = false
};
ResolvedAttributeSet ras = this.Source.FetchResolvedAttributes(projDirective.ResOpt, acpSourceProjection);
// Initialize the projection context
CdmCorpusContext ctx = (projDirective.Owner?.Ctx);
ProjectionAttributeStateSet pasSet = null;
// if polymorphic keep original source as previous state
Dictionary <string, List <ProjectionAttributeState> > polySourceSet = null;
if (projDirective.IsSourcePolymorphic)
{
polySourceSet = ProjectionResolutionCommonUtil.GetPolymorphicSourceSet(projDirective, ctx, this.Source, acpSourceProjection);
}
// now initialize projection attribute state
pasSet = ProjectionResolutionCommonUtil.InitializeProjectionAttributeStateSet(
projDirective,
ctx,
ras,
isSourcePolymorphic: projDirective.IsSourcePolymorphic,
polymorphicSet: polySourceSet);
projContext = new ProjectionContext(projDirective, ras.AttributeContext)
{
CurrentAttributeStateSet = pasSet
};
}
bool isConditionValid = false;
if (this.ConditionExpressionTreeRoot != null)
{
InputValues input = new InputValues()
{
noMaxDepth = projDirective.HasNoMaximumDepth,
isArray = projDirective.IsArray,
referenceOnly = projDirective.IsReferenceOnly,
normalized = projDirective.IsNormalized,
structured = projDirective.IsStructured,
nextDepth = ++projDirective.CurrentDepth,
maxDepth = projDirective.MaximumDepth,
minCardinality = projDirective.Cardinality?._MinimumNumber,
maxCardinality = projDirective.Cardinality?._MaximumNumber
};
isConditionValid = ExpressionTree.EvaluateExpressionTree(this.ConditionExpressionTreeRoot, input);
}
if (isConditionValid && this.Operations != null && this.Operations.Count > 0)
{
// Just in case new operations were added programmatically, reindex operations
for (int i = 0; i < this.Operations.Count; i++)
{
this.Operations[i].Index = i + 1;
}
// Operation
AttributeContextParameters acpGenAttrSet = new AttributeContextParameters
{
under = attrCtx,
type = CdmAttributeContextType.GeneratedSet,
Name = "_generatedAttributeSet"
};
CdmAttributeContext acGenAttrSet = CdmAttributeContext.CreateChildUnder(projDirective.ResOpt, acpGenAttrSet);
AttributeContextParameters acpGenAttrRound0 = new AttributeContextParameters
{
under = acGenAttrSet,
type = CdmAttributeContextType.GeneratedRound,
Name = "_generatedAttributeRound0"
};
CdmAttributeContext acGenAttrRound0 = CdmAttributeContext.CreateChildUnder(projDirective.ResOpt, acpGenAttrRound0);
// Start with an empty list for each projection
ProjectionAttributeStateSet pasOperations = new ProjectionAttributeStateSet(projContext.CurrentAttributeStateSet.Ctx);
foreach (CdmOperationBase operation in this.Operations)
{
// Evaluate projections and apply to empty state
ProjectionAttributeStateSet newPasOperations = operation.AppendProjectionAttributeState(projContext, pasOperations, acGenAttrRound0);
// If the operations fails or it is not implemented the projection cannot be evaluated so keep previous valid state.
if (newPasOperations != null)
{
pasOperations = newPasOperations;
}
}
// Finally update the current state to the projection context
projContext.CurrentAttributeStateSet = pasOperations;
}
else
{
// Pass Through - no operations to process
}
}
return(projContext);
}
/// <inheritdoc />
internal override ProjectionAttributeStateSet AppendProjectionAttributeState(
ProjectionContext projCtx,
ProjectionAttributeStateSet projOutputSet,
CdmAttributeContext attrCtx)
{
// Create a new attribute context for the operation
AttributeContextParameters attrCtxOpExcludeAttrsParam = new AttributeContextParameters
{
under = attrCtx,
type = CdmAttributeContextType.OperationExcludeAttributes,
Name = $"operation/index{Index}/operationExcludeAttributes"
};
CdmAttributeContext attrCtxOpExcludeAttrs = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxOpExcludeAttrsParam);
// Get the top-level attribute names of the attributes to exclude
// We use the top-level names because the exclude list may contain a previous name our current resolved attributes had
Dictionary <string, string> topLevelExcludeAttributeNames = ProjectionResolutionCommonUtil.GetTopList(projCtx, this.ExcludeAttributes);
// Initialize a projection attribute context tree builder with the created attribute context for the operation
ProjectionAttributeContextTreeBuilder attrCtxTreeBuilder = new ProjectionAttributeContextTreeBuilder(attrCtxOpExcludeAttrs);
// Iterate through all the projection attribute states generated from the source's resolved attributes
// Each projection attribute state contains a resolved attribute that it is corresponding to
foreach (ProjectionAttributeState currentPAS in projCtx.CurrentAttributeStateSet.States)
{
// Check if the current projection attribute state's resolved attribute is in the list of attributes to exclude
// If this attribute is not in the exclude list, then we are including it in the output
if (!topLevelExcludeAttributeNames.ContainsKey(currentPAS.CurrentResolvedAttribute.ResolvedName))
{
// Create the attribute context parameters and just store it in the builder for now
// We will create the attribute contexts at the end
attrCtxTreeBuilder.CreateAndStoreAttributeContextParameters(null, currentPAS, currentPAS.CurrentResolvedAttribute,
CdmAttributeContextType.AttributeDefinition,
currentPAS.CurrentResolvedAttribute.AttCtx, // lineage is the included attribute
null); // don't know who will point here yet
// Create a projection attribute state for the included attribute by creating a copy of the current state
// Copy() sets the current state as the previous state for the new one
// We only create projection attribute states for attributes that are not in the exclude list
ProjectionAttributeState newPAS = currentPAS.Copy();
projOutputSet.Add(newPAS);
}
else
{
// The current projection attribute state's resolved attribute is in the exclude list
// Get the attribute name the way it appears in the exclude list
string excludeAttributeName = null;
topLevelExcludeAttributeNames.TryGetValue(currentPAS.CurrentResolvedAttribute.ResolvedName, out excludeAttributeName);
// Create the attribute context parameters and just store it in the builder for now
// We will create the attribute contexts at the end
attrCtxTreeBuilder.CreateAndStoreAttributeContextParameters(excludeAttributeName, currentPAS, currentPAS.CurrentResolvedAttribute,
CdmAttributeContextType.AttributeDefinition,
currentPAS.CurrentResolvedAttribute.AttCtx, // lineage is the included attribute
null); // don't know who will point here yet, excluded, so... this could be the end for you.
}
}
// Create all the attribute contexts and construct the tree
attrCtxTreeBuilder.ConstructAttributeContextTree(projCtx);
return(projOutputSet);
}
/// <inheritdoc />
internal override ProjectionAttributeStateSet AppendProjectionAttributeState(
ProjectionContext projCtx,
ProjectionAttributeStateSet projOutputSet,
CdmAttributeContext attrCtx)
{
// Create a new attribute context for the operation
AttributeContextParameters attrCtxOpArrayExpansionParam = new AttributeContextParameters
{
under = attrCtx,
type = CdmAttributeContextType.OperationArrayExpansion,
Name = $"operation/index{Index}/operationArrayExpansion"
};
CdmAttributeContext attrCtxOpArrayExpansion = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxOpArrayExpansionParam);
// Expansion steps start at round 0
int round = 0;
List <ProjectionAttributeState> projAttrStatesFromRounds = new List <ProjectionAttributeState>();
// Ordinal validation
if (this.StartOrdinal > this.EndOrdinal)
{
Logger.Warning(TAG, this.Ctx, $"startOrdinal {this.StartOrdinal} should not be greater than endOrdinal {this.EndOrdinal}", nameof(AppendProjectionAttributeState));
}
else
{
// Ordinals should start at startOrdinal or 0, whichever is larger.
int startingOrdinal = Math.Max(0, (int)this.StartOrdinal);
// Ordinals should end at endOrdinal or the maximum ordinal allowed (set in resolve options), whichever is smaller.
if (this.EndOrdinal > projCtx.ProjectionDirective.ResOpt.MaxOrdinalForArrayExpansion)
{
Logger.Warning(TAG, this.Ctx, $"endOrdinal {this.EndOrdinal} is greater than the maximum allowed ordinal of {projCtx.ProjectionDirective.ResOpt.MaxOrdinalForArrayExpansion}. Using the maximum allowed ordinal instead.", nameof(AppendProjectionAttributeState));
}
int endingOrdinal = Math.Min(projCtx.ProjectionDirective.ResOpt.MaxOrdinalForArrayExpansion, (int)this.EndOrdinal);
// For each ordinal, create a copy of the input resolved attribute
for (int i = startingOrdinal; i <= endingOrdinal; i++)
{
// Create a new attribute context for the round
AttributeContextParameters attrCtxRoundParam = new AttributeContextParameters
{
under = attrCtxOpArrayExpansion,
type = CdmAttributeContextType.GeneratedRound,
Name = $"_generatedAttributeRound{round}"
};
CdmAttributeContext attrCtxRound = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxRoundParam);
// Iterate through all the projection attribute states generated from the source's resolved attributes
// Each projection attribute state contains a resolved attribute that it is corresponding to
foreach (ProjectionAttributeState currentPAS in projCtx.CurrentAttributeStateSet.States)
{
// Create a new attribute context for the expanded attribute with the current ordinal
AttributeContextParameters attrCtxExpandedAttrParam = new AttributeContextParameters
{
under = attrCtxRound,
type = CdmAttributeContextType.AttributeDefinition,
Name = $"{currentPAS.CurrentResolvedAttribute.ResolvedName}@{i}"
};
CdmAttributeContext attrCtxExpandedAttr = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxExpandedAttrParam);
if (currentPAS.CurrentResolvedAttribute.Target is ResolvedAttributeSet)
{
Logger.Error(TAG, this.Ctx, "Array expansion operation does not support attribute groups.");
projAttrStatesFromRounds.Clear();
break;
}
// Create a new resolved attribute for the expanded attribute
ResolvedAttribute newResAttr = CreateNewResolvedAttribute(projCtx, attrCtxExpandedAttr, currentPAS.CurrentResolvedAttribute.Target, currentPAS.CurrentResolvedAttribute.ResolvedName);
newResAttr.AttCtx.AddLineage(currentPAS.CurrentResolvedAttribute.AttCtx);
// Create a projection attribute state for the expanded attribute
ProjectionAttributeState newPAS = new ProjectionAttributeState(projOutputSet.Ctx)
{
CurrentResolvedAttribute = newResAttr,
PreviousStateList = new List <ProjectionAttributeState> {
currentPAS
},
Ordinal = i
};
projAttrStatesFromRounds.Add(newPAS);
}
if (i == endingOrdinal)
{
break;
}
// Increment the round
round++;
}
}
if (projAttrStatesFromRounds.Count == 0)
{
// No rounds were produced from the array expansion - input passes through
foreach (ProjectionAttributeState pas in projCtx.CurrentAttributeStateSet.States)
{
projOutputSet.Add(pas);
}
}
else
{
// Add all the projection attribute states containing the expanded attributes to the output
foreach (ProjectionAttributeState pas in projAttrStatesFromRounds)
{
projOutputSet.Add(pas);
}
}
return(projOutputSet);
}
internal ResolvedAttributeSet FetchResolvedAttributes(ResolveOptions resOpt = null, AttributeContextParameters acpInContext = null)
{
bool wasPreviouslyResolving = this.Ctx.Corpus.isCurrentlyResolving;
this.Ctx.Corpus.isCurrentlyResolving = true;
if (resOpt == null)
{
resOpt = new ResolveOptions(this, this.Ctx.Corpus.DefaultResolutionDirectives);
}
const string kind = "rasb";
ResolveContext ctx = this.Ctx as ResolveContext;
string cacheTag = ctx.Corpus.CreateDefinitionCacheTag(resOpt, this, kind, acpInContext != null ? "ctx" : "");
dynamic rasbCache = null;
if (cacheTag != null)
{
ctx.Cache.TryGetValue(cacheTag, out rasbCache);
}
CdmAttributeContext underCtx = null;
// store the previous document set, we will need to add it with
// children found from the constructResolvedTraits call
SymbolSet currDocRefSet = resOpt.SymbolRefSet;
if (currDocRefSet == null)
{
currDocRefSet = new SymbolSet();
}
resOpt.SymbolRefSet = new SymbolSet();
// get the moniker that was found and needs to be appended to all
// refs in the children attribute context nodes
string fromMoniker = resOpt.FromMoniker;
resOpt.FromMoniker = null;
if (rasbCache == null)
{
if (this.resolvingAttributes)
{
// re-entered this attribute through some kind of self or looping reference.
this.Ctx.Corpus.isCurrentlyResolving = wasPreviouslyResolving;
return(new ResolvedAttributeSet());
}
this.resolvingAttributes = true;
// if a new context node is needed for these attributes, make it now
if (acpInContext != null)
{
underCtx = CdmAttributeContext.CreateChildUnder(resOpt, acpInContext);
}
rasbCache = this.ConstructResolvedAttributes(resOpt, underCtx);
if (rasbCache != null)
{
this.resolvingAttributes = false;
// register set of possible docs
CdmObjectDefinition oDef = this.FetchObjectDefinition <CdmObjectDefinitionBase>(resOpt);
if (oDef != null)
{
ctx.Corpus.RegisterDefinitionReferenceSymbols(oDef, kind, resOpt.SymbolRefSet);
// get the new cache tag now that we have the list of docs
cacheTag = ctx.Corpus.CreateDefinitionCacheTag(resOpt, this, kind, acpInContext != null ? "ctx" : null);
// save this as the cached version
if (!string.IsNullOrWhiteSpace(cacheTag))
{
ctx.Cache[cacheTag] = rasbCache;
}
if (!string.IsNullOrWhiteSpace(fromMoniker) && acpInContext != null &&
(this is CdmObjectReferenceBase) && (this as CdmObjectReferenceBase).NamedReference != null)
{
// create a fresh context
CdmAttributeContext oldContext = acpInContext.under.Contents[acpInContext.under.Contents.Count - 1] as CdmAttributeContext;
acpInContext.under.Contents.RemoveAt(acpInContext.under.Contents.Count - 1);
underCtx = CdmAttributeContext.CreateChildUnder(resOpt, acpInContext);
CdmAttributeContext newContext = oldContext.CopyAttributeContextTree(resOpt, underCtx, rasbCache.ResolvedAttributeSet, null, fromMoniker);
// since THIS should be a refererence to a thing found in a moniker document, it already has a moniker in the reference
// this function just added that same moniker to everything in the sub-tree but now this one symbol has too many
// remove one
string monikerPathAdded = $"{fromMoniker}/";
if (newContext.Definition != null && newContext.Definition.NamedReference != null &&
newContext.Definition.NamedReference.StartsWith(monikerPathAdded))
{
// slice it off the front
newContext.Definition.NamedReference = newContext.Definition.NamedReference.Substring(monikerPathAdded.Length);
}
}
}
}
}
else
{
// cache found. if we are building a context, then fix what we got instead of making a new one
if (acpInContext != null)
{
// make the new context
underCtx = CdmAttributeContext.CreateChildUnder(resOpt, acpInContext);
rasbCache.ResolvedAttributeSet.AttributeContext.CopyAttributeContextTree(resOpt, underCtx, rasbCache.ResolvedAttributeSet, null, fromMoniker);
}
}
// merge child document set with current
currDocRefSet.Merge(resOpt.SymbolRefSet);
resOpt.SymbolRefSet = currDocRefSet;
this.Ctx.Corpus.isCurrentlyResolving = wasPreviouslyResolving;
return(rasbCache?.ResolvedAttributeSet);
}
/// <inheritdoc />
internal override ProjectionAttributeStateSet AppendProjectionAttributeState(
ProjectionContext projCtx,
ProjectionAttributeStateSet projOutputSet,
CdmAttributeContext attrCtx)
{
// Create a new attribute context for the operation
AttributeContextParameters attrCtxOpAlterTraitsParam = new AttributeContextParameters
{
under = attrCtx,
type = CdmAttributeContextType.OperationAlterTraits,
Name = $"operation/index{Index}/{this.GetName()}"
};
CdmAttributeContext attrCtxOpAlterTraits = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxOpAlterTraitsParam);
// Get the top-level attribute names of the selected attributes to apply
// We use the top-level names because the applyTo list may contain a previous name our current resolved attributes had
Dictionary <string, string> topLevelSelectedAttributeNames = this.ApplyTo != null?ProjectionResolutionCommonUtil.GetTopList(projCtx, this.ApplyTo) : null;
foreach (ProjectionAttributeState currentPAS in projCtx.CurrentAttributeStateSet.States)
{
// Check if the current projection attribute state's resolved attribute is in the list of selected attributes
// If this attribute is not in the list, then we are including it in the output without changes
if (topLevelSelectedAttributeNames == null || topLevelSelectedAttributeNames.ContainsKey(currentPAS.CurrentResolvedAttribute.ResolvedName))
{
// Create a new attribute context for the new attribute we will create
AttributeContextParameters attrCtxNewAttrParam = new AttributeContextParameters
{
under = attrCtxOpAlterTraits,
type = CdmAttributeContextType.AttributeDefinition,
Name = currentPAS.CurrentResolvedAttribute.ResolvedName
};
CdmAttributeContext attrCtxNewAttr = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxNewAttrParam);
ResolvedAttribute newResAttr = null;
if (currentPAS.CurrentResolvedAttribute.Target is ResolvedAttributeSet)
{
// Attribute group
// Create a copy of resolved attribute set
ResolvedAttributeSet resAttrNewCopy = ((ResolvedAttributeSet)currentPAS.CurrentResolvedAttribute.Target).Copy();
newResAttr = new ResolvedAttribute(projCtx.ProjectionDirective.ResOpt, resAttrNewCopy, currentPAS.CurrentResolvedAttribute.ResolvedName, attrCtxNewAttr);
// the resolved attribute group obtained from previous projection operation may have a different set of traits comparing to the resolved attribute target.
// We would want to take the set of traits from the resolved attribute.
newResAttr.ResolvedTraits = currentPAS.CurrentResolvedAttribute.ResolvedTraits.DeepCopy();
}
else if (currentPAS.CurrentResolvedAttribute.Target is CdmAttribute)
{
// Entity Attribute or Type Attribute
newResAttr = CreateNewResolvedAttribute(projCtx, attrCtxNewAttr, currentPAS.CurrentResolvedAttribute, currentPAS.CurrentResolvedAttribute.ResolvedName);
}
else
{
Logger.Error(this.Ctx, Tag, nameof(AppendProjectionAttributeState), this.AtCorpusPath, CdmLogCode.ErrProjUnsupportedSource, currentPAS.CurrentResolvedAttribute.Target.ObjectType.ToString(), this.GetName());
// Add the attribute without changes
projOutputSet.Add(currentPAS);
break;
}
newResAttr.ResolvedTraits = newResAttr.ResolvedTraits.MergeSet(this.ResolvedNewTraits(projCtx, currentPAS));
this.RemoveTraitsInNewAttribute(projCtx.ProjectionDirective.ResOpt, newResAttr);
// Create a projection attribute state for the new attribute with new applied traits by creating a copy of the current state
// Copy() sets the current state as the previous state for the new one
ProjectionAttributeState newPAS = currentPAS.Copy();
// Update the resolved attribute to be the new attribute we created
newPAS.CurrentResolvedAttribute = newResAttr;
projOutputSet.Add(newPAS);
}
else
{
// Pass through
projOutputSet.Add(currentPAS);
}
}
return(projOutputSet);
}
/// <summary>
/// Creates a resolved copy of the entity.
/// </summary>
public async Task <CdmEntityDefinition> CreateResolvedEntityAsync(string newEntName, ResolveOptions resOpt = null, CdmFolderDefinition folder = null, string newDocName = null)
{
if (resOpt == null)
{
resOpt = new ResolveOptions(this, this.Ctx.Corpus.DefaultResolutionDirectives);
}
if (resOpt.WrtDoc == null)
{
Logger.Error(nameof(CdmEntityDefinition), this.Ctx as ResolveContext, $"No WRT document was supplied.", nameof(CreateResolvedEntityAsync));
return(null);
}
if (string.IsNullOrEmpty(newEntName))
{
Logger.Error(nameof(CdmEntityDefinition), this.Ctx as ResolveContext, $"No Entity Name provided.", nameof(CreateResolvedEntityAsync));
return(null);
}
// if the wrtDoc needs to be indexed (like it was just modified) then do that first
if (!await resOpt.WrtDoc.IndexIfNeeded(resOpt, true))
{
Logger.Error(nameof(CdmEntityDefinition), this.Ctx as ResolveContext, $"Couldn't index source document.", nameof(CreateResolvedEntityAsync));
return(null);
}
if (folder == null)
{
folder = this.InDocument.Folder;
}
string fileName = (string.IsNullOrEmpty(newDocName)) ? $"{newEntName}.cdm.json" : newDocName;
string origDoc = this.InDocument.AtCorpusPath;
// Don't overwite the source document
string targetAtCorpusPath = $"{this.Ctx.Corpus.Storage.CreateAbsoluteCorpusPath(folder.AtCorpusPath, folder)}{fileName}";
if (StringUtils.EqualsWithIgnoreCase(targetAtCorpusPath, origDoc))
{
Logger.Error(nameof(CdmEntityDefinition), this.Ctx as ResolveContext, $"Attempting to replace source entity's document '{targetAtCorpusPath}'", nameof(CreateResolvedEntityAsync));
return(null);
}
// make the top level attribute context for this entity
// for this whole section where we generate the attribute context tree and get resolved attributes
// set the flag that keeps all of the parent changes and document dirty from from happening
bool wasResolving = this.Ctx.Corpus.isCurrentlyResolving;
this.Ctx.Corpus.isCurrentlyResolving = true;
string entName = newEntName;
ResolveContext ctx = this.Ctx as ResolveContext;
CdmAttributeContext attCtxEnt = ctx.Corpus.MakeObject <CdmAttributeContext>(CdmObjectType.AttributeContextDef, entName, true);
attCtxEnt.Ctx = ctx;
attCtxEnt.InDocument = this.InDocument;
// cheating a bit to put the paths in the right place
AttributeContextParameters acp = new AttributeContextParameters
{
under = attCtxEnt,
type = CdmAttributeContextType.AttributeGroup,
Name = "attributeContext"
};
CdmAttributeContext attCtxAC = CdmAttributeContext.CreateChildUnder(resOpt, acp);
AttributeContextParameters acpEnt = new AttributeContextParameters
{
under = attCtxAC,
type = CdmAttributeContextType.Entity,
Name = entName,
Regarding = ctx.Corpus.MakeObject <CdmObject>(CdmObjectType.EntityRef, this.GetName(), true)
};
// use this whenever we need to keep references pointing at things that were already found. used when 'fixing' references by localizing to a new document
ResolveOptions resOptCopy = CdmObjectBase.CopyResolveOptions(resOpt);
resOptCopy.SaveResolutionsOnCopy = true;
// resolve attributes with this context. the end result is that each resolved attribute
// points to the level of the context where it was created
var ras = this.FetchResolvedAttributes(resOptCopy, acpEnt);
if (ras == null)
{
this.resolvingAttributes = false;
return(null);
}
// create a new copy of the attribute context for this entity
HashSet <CdmAttributeContext> allAttCtx = new HashSet <CdmAttributeContext>();
CdmAttributeContext newNode = attCtxEnt.CopyNode(resOpt) as CdmAttributeContext;
attCtxEnt = attCtxEnt.CopyAttributeContextTree(resOpt, newNode, ras, allAttCtx, "resolvedFrom");
CdmAttributeContext attCtx = (attCtxEnt.Contents[0] as CdmAttributeContext).Contents[0] as CdmAttributeContext;
this.Ctx.Corpus.isCurrentlyResolving = wasResolving;
// make a new document in given folder if provided or the same folder as the source entity
folder.Documents.Remove(fileName);
CdmDocumentDefinition docRes = folder.Documents.Add(fileName);
// add a import of the source document
origDoc = this.Ctx.Corpus.Storage.CreateRelativeCorpusPath(origDoc, docRes); // just in case we missed the prefix
docRes.Imports.Add(origDoc, "resolvedFrom");
// make the empty entity
CdmEntityDefinition entResolved = docRes.Definitions.Add(entName);
// set the context to the copy of the tree. fix the docs on the context nodes
entResolved.AttributeContext = attCtx;
attCtx.Visit($"{entName}/attributeContext/",
new VisitCallback
{
Invoke = (obj, path) =>
{
obj.InDocument = docRes;
return(false);
}
},
null);
// add the traits of the entity
ResolvedTraitSet rtsEnt = this.FetchResolvedTraits(resOpt);
rtsEnt.Set.ForEach(rt =>
{
var traitRef = CdmObjectBase.ResolvedTraitToTraitRef(resOptCopy, rt);
(entResolved as CdmObjectDefinition).ExhibitsTraits.Add(traitRef);
});
// the attributes have been named, shaped, etc for this entity so now it is safe to go and
// make each attribute context level point at these final versions of attributes
IDictionary <string, int> attPath2Order = new Dictionary <string, int>();
Action <ResolvedAttributeSet, string> pointContextAtResolvedAtts = null;
pointContextAtResolvedAtts = (rasSub, path) =>
{
rasSub.Set.ForEach(ra =>
{
List <CdmAttributeContext> raCtxInEnt = new List <CdmAttributeContext>();
HashSet <CdmAttributeContext> raCtxSet = null;
rasSub.Ra2attCtxSet.TryGetValue(ra, out raCtxSet);
// find the correct attCtx for this copy, intersect these two sets
// (iterate over the shortest list)
if (allAttCtx.Count < raCtxSet.Count)
{
foreach (CdmAttributeContext currAttCtx in allAttCtx)
{
if (raCtxSet.Contains(currAttCtx))
{
raCtxInEnt.Add(currAttCtx);
}
}
}
else
{
foreach (CdmAttributeContext currAttCtx in raCtxSet)
{
if (allAttCtx.Contains(currAttCtx))
{
raCtxInEnt.Add(currAttCtx);
}
}
}
foreach (CdmAttributeContext raCtx in raCtxInEnt)
{
var refs = raCtx.Contents;
// there might be more than one explanation for where and attribute came from when things get merges as they do
// this won't work when I add the structured attributes to avoid name collisions
string attRefPath = path + ra.ResolvedName;
if ((ra.Target as CdmAttribute)?.GetType().GetMethod("GetObjectType") != null)
{
if (!attPath2Order.ContainsKey(attRefPath))
{
var attRef = this.Ctx.Corpus.MakeObject <CdmObjectReferenceBase>(CdmObjectType.AttributeRef, attRefPath, true);
// only need one explanation for this path to the insert order
attPath2Order.Add(attRef.NamedReference, ra.InsertOrder);
refs.Add(attRef);
}
}
else
{
attRefPath += "/members/";
pointContextAtResolvedAtts(ra.Target as ResolvedAttributeSet, attRefPath);
}
}
});
};
pointContextAtResolvedAtts(ras, entName + "/hasAttributes/");
// generated attribute structures may end up with 0 attributes after that. prune them
Func <CdmObject, bool, bool> CleanSubGroup = null;
CleanSubGroup = (subItem, underGenerated) =>
{
if (subItem.ObjectType == CdmObjectType.AttributeRef)
{
return(true); // not empty
}
CdmAttributeContext ac = subItem as CdmAttributeContext;
if (ac.Type == CdmAttributeContextType.GeneratedSet)
{
underGenerated = true;
}
if (ac.Contents == null || ac.Contents.Count == 0)
{
return(false); // empty
}
// look at all children, make a set to remove
List <CdmAttributeContext> toRemove = new List <CdmAttributeContext>();
foreach (var subSub in ac.Contents)
{
if (CleanSubGroup(subSub, underGenerated) == false)
{
bool potentialTarget = underGenerated;
if (potentialTarget == false)
{
// cast is safe because we returned false meaning empty and not a attribute ref
// so is this the set holder itself?
potentialTarget = (subSub as CdmAttributeContext).Type == CdmAttributeContextType.GeneratedSet;
}
if (potentialTarget)
{
toRemove.Add(subSub as CdmAttributeContext);
}
}
}
foreach (var toDie in toRemove)
{
ac.Contents.Remove(toDie);
}
return(ac.Contents.Count != 0);
};
CleanSubGroup(attCtx, false);
Func <CdmAttributeContext, int?> orderContents = null;
// create an all-up ordering of attributes at the leaves of this tree based on insert order
// sort the attributes in each context by their creation order and mix that with the other sub-contexts that have been sorted
Func <CdmObject, int?> getOrderNum = (item) =>
{
if (item.ObjectType == CdmObjectType.AttributeContextDef && orderContents != null)
{
return(orderContents(item as CdmAttributeContext));
}
else if (item.ObjectType == CdmObjectType.AttributeRef)
{
string attName = (item as CdmAttributeReference).NamedReference;
int o = attPath2Order[attName];
return(o);
}
else
{
return(-1); // put the mystery item on top.
}
};
orderContents = (CdmAttributeContext under) =>
{
if (under.LowestOrder == null)
{
under.LowestOrder = -1; // used for group with nothing but traits
if (under.Contents.Count == 1)
{
under.LowestOrder = getOrderNum(under.Contents[0]);
}
else
{
under.Contents.AllItems.Sort((l, r) =>
{
int lNum = -1;
int rNum = -1;
int?aux;
aux = getOrderNum(l);
if (aux != null)
{
lNum = (int)aux;
}
aux = getOrderNum(r);
if (aux != null)
{
rNum = (int)aux;
}
if (lNum != -1 && (under.LowestOrder == -1 || lNum < under.LowestOrder))
{
under.LowestOrder = lNum;
}
if (rNum != -1 && (under.LowestOrder == -1 || rNum < under.LowestOrder))
{
under.LowestOrder = rNum;
}
return(lNum - rNum);
});
}
}
return(under.LowestOrder);
};
orderContents((CdmAttributeContext)attCtx);
// resolved attributes can gain traits that are applied to an entity when referenced
// since these traits are described in the context, it is redundant and messy to list them in the attribute
// so, remove them. create and cache a set of names to look for per context
// there is actually a hierarchy to all attributes from the base entity should have all traits applied independently of the
// sub-context they come from. Same is true of attribute entities. so do this recursively top down
var ctx2traitNames = new Dictionary <CdmAttributeContext, HashSet <string> >();
Action <CdmAttributeContext, HashSet <string> > collectContextTraits = null;
collectContextTraits = (subAttCtx, inheritedTraitNames) =>
{
var traitNamesHere = new HashSet <string>(inheritedTraitNames);
var traitsHere = subAttCtx.ExhibitsTraits;
if (traitsHere != null)
{
foreach (var tat in traitsHere)
{
traitNamesHere.Add(tat.NamedReference);
}
}
ctx2traitNames.Add(subAttCtx, traitNamesHere);
subAttCtx.Contents.AllItems.ForEach((cr) =>
{
if (cr.ObjectType == CdmObjectType.AttributeContextDef)
{
// do this for all types?
collectContextTraits(cr as CdmAttributeContext, traitNamesHere);
}
});
};
collectContextTraits(attCtx, new HashSet <string>());
// add the attributes, put them in attribute groups if structure needed
IDictionary <ResolvedAttribute, string> resAtt2RefPath = new Dictionary <ResolvedAttribute, string>();
Action <ResolvedAttributeSet, dynamic, string> addAttributes = null;
addAttributes = (rasSub, container, path) =>
{
rasSub.Set.ForEach(ra =>
{
string attPath = path + ra.ResolvedName;
// use the path of the context associated with this attribute to find the new context that matches on path
HashSet <CdmAttributeContext> raCtxSet = null;
rasSub.Ra2attCtxSet.TryGetValue(ra, out raCtxSet);
CdmAttributeContext raCtx = null;
// find the correct attCtx for this copy
// (interate over the shortest list)
if (allAttCtx.Count < raCtxSet.Count)
{
foreach (CdmAttributeContext currAttCtx in allAttCtx)
{
if (raCtxSet.Contains(currAttCtx))
{
raCtx = currAttCtx;
break;
}
}
}
else
{
foreach (CdmAttributeContext currAttCtx in raCtxSet)
{
if (allAttCtx.Contains(currAttCtx))
{
raCtx = currAttCtx;
break;
}
}
}
if (ra.Target is ResolvedAttributeSet)
{
// this is a set of attributes.
// make an attribute group to hold them
CdmAttributeGroupDefinition attGrp = this.Ctx.Corpus.MakeObject <CdmAttributeGroupDefinition>(CdmObjectType.AttributeGroupDef, ra.ResolvedName, false);
attGrp.AttributeContext = this.Ctx.Corpus.MakeObject <CdmAttributeContextReference>(CdmObjectType.AttributeContextRef, raCtx.AtCorpusPath, true);
// take any traits from the set and make them look like traits exhibited by the group
HashSet <string> avoidSet = ctx2traitNames[raCtx];
ResolvedTraitSet rtsAtt = ra.ResolvedTraits;
rtsAtt.Set.ForEach(rt =>
{
if (rt.Trait.Ugly != true)
{
// don't mention your ugly traits
if (avoidSet?.Contains(rt.TraitName) != true)
{
// avoid the ones from the context
var traitRef = CdmObjectBase.ResolvedTraitToTraitRef(resOptCopy, rt);
(attGrp as CdmObjectDefinitionBase).ExhibitsTraits.Add(traitRef);
}
}
});
// wrap it in a reference and then recurse with this as the new container
CdmAttributeGroupReference attGrpRef = this.Ctx.Corpus.MakeObject <CdmAttributeGroupReference>(CdmObjectType.AttributeGroupRef, null, false);
attGrpRef.ExplicitReference = attGrp;
container.AddAttributeDef(attGrpRef);
// isn't this where ...
addAttributes(ra.Target as ResolvedAttributeSet, attGrp, attPath + "/members/");
}
else
{
CdmTypeAttributeDefinition att = this.Ctx.Corpus.MakeObject <CdmTypeAttributeDefinition>(CdmObjectType.TypeAttributeDef, ra.ResolvedName, false);
att.AttributeContext = this.Ctx.Corpus.MakeObject <CdmAttributeContextReference>(CdmObjectType.AttributeContextRef, raCtx.AtCorpusPath, true);
HashSet <string> avoidSet = ctx2traitNames[raCtx];
ResolvedTraitSet rtsAtt = ra.ResolvedTraits;
rtsAtt.Set.ForEach(rt =>
{
if (rt.Trait.Ugly != true)
{ // don't mention your ugly traits
if (avoidSet?.Contains(rt.TraitName) != true)
{ // avoid the ones from the context
var traitRef = CdmObjectBase.ResolvedTraitToTraitRef(resOptCopy, rt);
((CdmTypeAttributeDefinition)att).AppliedTraits.Add(traitRef);
}
}
});
// none of the dataformat traits have the bit set that will make them turn into a property
// this is intentional so that the format traits make it into the resolved object
// but, we still want a guess as the data format, so get it and set it.
var impliedDataFormat = att.DataFormat;
if (impliedDataFormat != CdmDataFormat.Unknown)
{
att.DataFormat = impliedDataFormat;
}
container.AddAttributeDef(att);
resAtt2RefPath[ra] = attPath;
}
});
};
addAttributes(ras, entResolved, entName + "/hasAttributes/");
// any resolved traits that hold arguments with attribute refs should get 'fixed' here
Action <CdmTraitReference, string, bool> replaceTraitAttRef = (tr, entityHint, isAttributeContext) =>
{
if (tr.Arguments != null)
{
foreach (CdmArgumentDefinition arg in tr.Arguments.AllItems)
{
dynamic v = arg.UnResolvedValue != null ? arg.UnResolvedValue : arg.Value;
// is this an attribute reference?
if (v != null && (v as CdmObject)?.ObjectType == CdmObjectType.AttributeRef)
{
// only try this if the reference has no path to it (only happens with intra-entity att refs)
var attRef = v as CdmAttributeReference;
if (!string.IsNullOrEmpty(attRef.NamedReference) && attRef.NamedReference.IndexOf('/') == -1)
{
if (arg.UnResolvedValue == null)
{
arg.UnResolvedValue = arg.Value;
}
// give a promise that can be worked out later. assumption is that the attribute must come from this entity.
var newAttRef = this.Ctx.Corpus.MakeRef <CdmAttributeReference>(CdmObjectType.AttributeRef, entityHint + "/(resolvedAttributes)/" + attRef.NamedReference, true);
// inDocument is not propagated during resolution, so set it here
newAttRef.InDocument = arg.InDocument;
arg.Value = newAttRef;
}
}
}
}
};
// fix entity traits
if (entResolved.ExhibitsTraits != null)
{
foreach (var et in entResolved.ExhibitsTraits)
{
replaceTraitAttRef(et, newEntName, false);
}
}
// fix context traits
Action <CdmAttributeContext, string> fixContextTraits = null;
fixContextTraits = (subAttCtx, entityHint) =>
{
var traitsHere = subAttCtx.ExhibitsTraits;
if (traitsHere != null)
{
foreach (var tr in traitsHere)
{
replaceTraitAttRef(tr, entityHint, true);
}
}
subAttCtx.Contents.AllItems.ForEach((cr) =>
{
if (cr.ObjectType == CdmObjectType.AttributeContextDef)
{
// if this is a new entity context, get the name to pass along
CdmAttributeContext subSubAttCtx = (CdmAttributeContext)cr;
string subEntityHint = entityHint;
if (subSubAttCtx.Type == CdmAttributeContextType.Entity)
{
subEntityHint = subSubAttCtx.Definition.NamedReference;
}
// do this for all types
fixContextTraits(subSubAttCtx, subEntityHint);
}
});
};
fixContextTraits(attCtx, newEntName);
// and the attribute traits
var entAttributes = entResolved.Attributes;
if (entAttributes != null)
{
foreach (var entAtt in entAttributes)
{
CdmTraitCollection attTraits = entAtt.AppliedTraits;
if (attTraits != null)
{
foreach (var tr in attTraits)
{
replaceTraitAttRef(tr, newEntName, false);
}
}
}
}
// we are about to put this content created in the context of various documents (like references to attributes from base entities, etc.)
// into one specific document. all of the borrowed refs need to work. so, re-write all string references to work from this new document
// the catch-22 is that the new document needs these fixes done before it can be used to make these fixes.
// the fix needs to happen in the middle of the refresh
// trigger the document to refresh current content into the resolved OM
attCtx.Parent = null; // remove the fake parent that made the paths work
ResolveOptions resOptNew = CdmObjectBase.CopyResolveOptions(resOpt);
resOptNew.LocalizeReferencesFor = docRes;
resOptNew.WrtDoc = docRes;
if (!await docRes.RefreshAsync(resOptNew))
{
Logger.Error(nameof(CdmEntityDefinition), this.Ctx as ResolveContext, $"Failed to index the resolved document.", nameof(CreateResolvedEntityAsync));
return(null);
}
// get a fresh ref
entResolved = docRes.FetchObjectFromDocumentPath(entName, resOptNew) as CdmEntityDefinition;
this.Ctx.Corpus.resEntMap[this.AtCorpusPath] = entResolved.AtCorpusPath;
return(entResolved);
}
/// <inheritdoc />
internal override ProjectionAttributeStateSet AppendProjectionAttributeState(
ProjectionContext projCtx,
ProjectionAttributeStateSet projOutputSet,
CdmAttributeContext attrCtx)
{
// Create a new attribute context for the operation
AttributeContextParameters attrCtxOpRenameAttrsParam = new AttributeContextParameters
{
under = attrCtx,
type = CdmAttributeContextType.OperationRenameAttributes,
Name = $"operation/index{Index}/operationRenameAttributes"
};
CdmAttributeContext attrCtxOpRenameAttrs = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxOpRenameAttrsParam);
// Get the list of attributes that will be renamed
List <string> renameAttributes;
if (this.ApplyTo != null)
{
renameAttributes = this.ApplyTo;
}
else
{
renameAttributes = new List <string>();
foreach (ProjectionAttributeState currentPAS in projCtx.CurrentAttributeStateSet.States)
{
renameAttributes.Add(currentPAS.CurrentResolvedAttribute.ResolvedName);
}
}
// Get the top-level attribute names of the attributes to rename
// We use the top-level names because the rename list may contain a previous name our current resolved attributes had
Dictionary <string, string> topLevelRenameAttributeNames = ProjectionResolutionCommonUtil.GetTopList(projCtx, renameAttributes);
string sourceAttributeName = projCtx.ProjectionDirective.OriginalSourceEntityAttributeName;
// Initialize a projection attribute context tree builder with the created attribute context for the operation
ProjectionAttributeContextTreeBuilder attrCtxTreeBuilder = new ProjectionAttributeContextTreeBuilder(attrCtxOpRenameAttrs);
// Iterate through all the projection attribute states generated from the source's resolved attributes
// Each projection attribute state contains a resolved attribute that it is corresponding to
foreach (ProjectionAttributeState currentPAS in projCtx.CurrentAttributeStateSet.States)
{
// Check if the current projection attribute state's resolved attribute is in the list of attributes to rename
// If this attribute is not in the rename list, then we are including it in the output without changes
if (topLevelRenameAttributeNames.ContainsKey(currentPAS.CurrentResolvedAttribute.ResolvedName))
{
if (currentPAS.CurrentResolvedAttribute.Target is CdmAttribute)
{
// The current attribute should be renamed
string newAttributeName = GetNewAttributeName(currentPAS, sourceAttributeName);
// Create new resolved attribute with the new name, set the new attribute as target
ResolvedAttribute resAttrNew = CreateNewResolvedAttribute(projCtx, null, currentPAS.CurrentResolvedAttribute.Target, newAttributeName);
// Get the attribute name the way it appears in the applyTo list
string applyToName = topLevelRenameAttributeNames[currentPAS.CurrentResolvedAttribute.ResolvedName];
// Create the attribute context parameters and just store it in the builder for now
// We will create the attribute contexts at the end
attrCtxTreeBuilder.CreateAndStoreAttributeContextParameters(applyToName, currentPAS, resAttrNew,
CdmAttributeContextType.AttributeDefinition,
currentPAS.CurrentResolvedAttribute.AttCtx, // lineage is the original attribute
null); // don't know who will point here yet
// Create a projection attribute state for the renamed attribute by creating a copy of the current state
// Copy() sets the current state as the previous state for the new one
// We only create projection attribute states for attributes that are in the rename list
ProjectionAttributeState newPAS = currentPAS.Copy();
// Update the resolved attribute to be the new renamed attribute we created
newPAS.CurrentResolvedAttribute = resAttrNew;
projOutputSet.Add(newPAS);
}
else
{
Logger.Warning(this.Ctx, Tag, nameof(AppendProjectionAttributeState), this.AtCorpusPath, CdmLogCode.WarnProjRenameAttrNotSupported);
// Add the attribute without changes
projOutputSet.Add(currentPAS);
}
}
else
{
// Pass through
projOutputSet.Add(currentPAS);
}
}
// Create all the attribute contexts and construct the tree
attrCtxTreeBuilder.ConstructAttributeContextTree(projCtx);
return(projOutputSet);
}
/// <inheritdoc />
internal override ProjectionAttributeStateSet AppendProjectionAttributeState(
ProjectionContext projCtx,
ProjectionAttributeStateSet projOutputSet,
CdmAttributeContext attrCtx)
{
// Create a new attribute context for the operation
AttributeContextParameters attrCtxOpIncludeAttrsParam = new AttributeContextParameters
{
under = attrCtx,
type = CdmAttributeContextType.OperationIncludeAttributes,
Name = $"operation/index{Index}/operationIncludeAttributes"
};
CdmAttributeContext attrCtxOpIncludeAttrs = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxOpIncludeAttrsParam);
// Get the top-level attribute names for each of the included attributes
// Since the include operation allows providing either current state resolved attribute names
// or the previous state resolved attribute names, we search for the name in the PAS tree
// and fetch the top level resolved attribute names.
Dictionary <string, string> topLevelIncludeAttributeNames = ProjectionResolutionCommonUtil.GetTopList(projCtx, this.IncludeAttributes);
// Initialize a projection attribute context tree builder with the created attribute context for the operation
ProjectionAttributeContextTreeBuilder attrCtxTreeBuilder = new ProjectionAttributeContextTreeBuilder(attrCtxOpIncludeAttrs);
// Iterate through all the PAS in the PASSet generated from the projection source's resolved attributes
foreach (ProjectionAttributeState currentPAS in projCtx.CurrentAttributeStateSet.States)
{
// Check if the current PAS's RA is in the list of attributes to include.
if (topLevelIncludeAttributeNames.ContainsKey(currentPAS.CurrentResolvedAttribute.ResolvedName))
{
// Get the attribute name the way it appears in the include list
string includeAttributeName = null;
topLevelIncludeAttributeNames.TryGetValue(currentPAS.CurrentResolvedAttribute.ResolvedName, out includeAttributeName);
// Create the attribute context parameters and just store it in the builder for now
// We will create the attribute contexts at the end
attrCtxTreeBuilder.CreateAndStoreAttributeContextParameters(includeAttributeName, currentPAS, currentPAS.CurrentResolvedAttribute,
CdmAttributeContextType.AttributeDefinition,
currentPAS.CurrentResolvedAttribute.AttCtx, // lineage is the included attribute
null); // don't know who will point here yet
// Create a projection attribute state for the included attribute by creating a copy of the current state
// Copy() sets the current state as the previous state for the new one
// We only create projection attribute states for attributes in the include list
ProjectionAttributeState newPAS = currentPAS.Copy();
projOutputSet.Add(newPAS);
}
else
{
// Create the attribute context parameters and just store it in the builder for now
// We will create the attribute contexts at the end
attrCtxTreeBuilder.CreateAndStoreAttributeContextParameters(null, currentPAS, currentPAS.CurrentResolvedAttribute,
CdmAttributeContextType.AttributeDefinition,
currentPAS.CurrentResolvedAttribute.AttCtx, // lineage is the excluded attribute
null); // don't know who will point here, probably nobody, I mean, we got excluded
}
}
// Create all the attribute contexts and construct the tree
attrCtxTreeBuilder.ConstructAttributeContextTree(projCtx);
return(projOutputSet);
}
/// <inheritdoc />
internal override ProjectionAttributeStateSet AppendProjectionAttributeState(
ProjectionContext projCtx,
ProjectionAttributeStateSet projOutputSet,
CdmAttributeContext attrCtx)
{
// Create a new attribute context for the operation
AttributeContextParameters attrCtxOpExcludeAttrsParam = new AttributeContextParameters
{
under = attrCtx,
type = CdmAttributeContextType.OperationExcludeAttributes,
Name = $"operation/index{Index}/operationExcludeAttributes"
};
CdmAttributeContext attrCtxOpExcludeAttrs = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxOpExcludeAttrsParam);
// Get the top-level attribute names of the attributes to exclude
// We use the top-level names because the exclude list may contain a previous name our current resolved attributes had
Dictionary <string, string> topLevelExcludeAttributeNames = ProjectionResolutionCommonUtil.GetTopList(projCtx, this.ExcludeAttributes);
// Iterate through all the projection attribute states generated from the source's resolved attributes
// Each projection attribute state contains a resolved attribute that it is corresponding to
foreach (ProjectionAttributeState currentPAS in projCtx.CurrentAttributeStateSet.Values)
{
// Check if the current projection attribute state's resolved attribute is in the list of attributes to exclude
// If this attribute is not in the exclude list, then we are including it in the output
if (!topLevelExcludeAttributeNames.ContainsKey(currentPAS.CurrentResolvedAttribute.ResolvedName))
{
// Create a new attribute context for the attribute that we are including
AttributeContextParameters attrCtxAddedAttrParam = new AttributeContextParameters
{
under = attrCtx,
type = CdmAttributeContextType.AttributeDefinition,
Name = currentPAS.CurrentResolvedAttribute.ResolvedName
};
CdmAttributeContext attrCtxAddedAttr = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxAddedAttrParam);
// Create a projection attribute state for the included attribute
// We only create projection attribute states for attributes that are not in the exclude list
// Add the current projection attribute state as the previous state of the new projection attribute state
ProjectionAttributeState newPAS = new ProjectionAttributeState(projOutputSet.Ctx)
{
CurrentResolvedAttribute = currentPAS.CurrentResolvedAttribute,
PreviousStateList = new List <ProjectionAttributeState> {
currentPAS
}
};
projOutputSet.Add(newPAS);
}
else
{
// The current projection attribute state's resolved attribute is in the exclude list
// Get the attribute name the way it appears in the exclude list
// For our attribute context, we want to use the attribute name the attribute has in the exclude list rather than its current name
string excludeAttributeName = null;
topLevelExcludeAttributeNames.TryGetValue(currentPAS.CurrentResolvedAttribute.ResolvedName, out excludeAttributeName);
// Create a new attribute context for the excluded attribute
AttributeContextParameters attrCtxExcludedAttrParam = new AttributeContextParameters
{
under = attrCtxOpExcludeAttrs,
type = CdmAttributeContextType.AttributeDefinition,
Name = excludeAttributeName
};
CdmAttributeContext attrCtxExcludedAttr = CdmAttributeContext.CreateChildUnder(projCtx.ProjectionDirective.ResOpt, attrCtxExcludedAttrParam);
}
}
return(projOutputSet);
}