/// <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);
// 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);
}
}
// 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);
// 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);
}
}
// 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 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);
}
/// <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 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);
}
/// <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);
// Index that holds the current attribute name as the key and the attribute as value
Dictionary <string, ProjectionAttributeState> topLevelIncludeAttribute = new Dictionary <string, ProjectionAttributeState>();
// List of attributes that were not included on the final attribute list
List <ProjectionAttributeState> removedAttributes = new List <ProjectionAttributeState>();
// 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))
{
topLevelIncludeAttribute.Add(currentPAS.CurrentResolvedAttribute.ResolvedName, currentPAS);
}
else
{
removedAttributes.Add(currentPAS);
}
}
// Loop through the list of attributes in the same order that was specified by the user
foreach (KeyValuePair <string, string> entry in topLevelIncludeAttributeNames)
{
// Get the attribute state
ProjectionAttributeState currentPAS = topLevelIncludeAttribute[entry.Key];
// Get the attribute name the way it appears in the include list
string includeAttributeName = entry.Value;
// 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);
}
// Generate attribute context nodes for the attributes that were not included
foreach (ProjectionAttributeState currentPAS in removedAttributes)
{
// 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.AttributeExcluded,
currentPAS.CurrentResolvedAttribute.AttCtx, // lineage is the included attribute
null); // don't know who will point here yet
}
// Create all the attribute contexts and construct the tree
attrCtxTreeBuilder.ConstructAttributeContextTree(projCtx);
return(projOutputSet);
}