/// <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 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);
}
/// <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);
// 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);
}