private static void MergeSelectExpressionsAndFields(MergeProposal mergeProposal, Dictionary <string, ExpressionSyntax> selectExpressionDict, MergeSuggestions mergeSuggestion)
{
foreach (var curProposedData in mergeProposal.ProposedForMerge)
{
foreach (var curExpr in curProposedData.SelectExpressions)
{
var expression = curExpr.Value as MemberAccessExpressionSyntax;
var identifierName = ExtractIdentifierFromExpression(expression);
if (identifierName != null && identifierName == curProposedData.FromIdentifier)
{
if (expression.Expression is MemberAccessExpressionSyntax)
{
var valueStr = ExtractValueFromExpression(curExpr.Value);
var valueExp = SyntaxFactory.ParseExpression(valueStr).NormalizeWhitespace();
var innerName = ExtractIdentifierFromExpression(valueExp as MemberAccessExpressionSyntax);
var innerMember = SyntaxFactory.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression,
SyntaxFactory.IdentifierName("doc"), SyntaxFactory.IdentifierName(innerName));
expression = SyntaxFactory.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, innerMember, expression.Name);
}
else if (expression.Expression is SimpleNameSyntax)
{
expression = SyntaxFactory.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, SyntaxFactory.IdentifierName("doc"), expression.Name);
}
}
selectExpressionDict[curExpr.Key] = expression ?? curExpr.Value;
}
mergeSuggestion.CanMerge.Add(curProposedData.IndexName);
DataDictionaryMerge(mergeSuggestion.MergedIndex.Fields, curProposedData.Index.Fields);
mergeSuggestion.MergedIndex.Fields = mergeSuggestion.MergedIndex.Fields;
}
}
private static void RemoveMatchingIndexes(MergeProposal mergeProposal, Dictionary <string, ExpressionSyntax> selectExpressionDict, MergeSuggestions mergeSuggestion,
IndexMergeResults indexMergeResults)
{
if (mergeProposal.ProposedForMerge.Count > 1)
{
var matchingExistingIndexes = mergeProposal.ProposedForMerge.Where(x =>
AreSelectClausesTheSame(x, selectExpressionDict) &&
(x.Index.Compare(mergeSuggestion.MergedIndex) == IndexDefinitionCompareDifferences.None ||
x.Index.Compare(mergeSuggestion.MergedIndex) == IndexDefinitionCompareDifferences.Maps))
.OrderBy(x => x.IndexName.StartsWith("Auto/", StringComparison.CurrentCultureIgnoreCase))
.ToList();
if (matchingExistingIndexes.Count > 0)
{
var surpassingIndex = matchingExistingIndexes.First();
mergeSuggestion.SurpassingIndex = surpassingIndex.IndexName;
mergeSuggestion.MergedIndex = null;
mergeSuggestion.CanMerge.Clear();
mergeSuggestion.CanDelete = mergeProposal.ProposedForMerge.Except(new[]
{
surpassingIndex
}).Select(x => x.IndexName).ToList();
}
indexMergeResults.Suggestions.Add(mergeSuggestion);
}
}
private List <MergeProposal> MergeIndexes(List <IndexData> indexes)
{
var mergedIndexesData = new List <MergeProposal>();
foreach (var indexData in indexes.Where(indexData => !indexData.IsAlreadyMerged))
{
indexData.IsAlreadyMerged = true;
var mergeData = new MergeProposal();
List <string> failComments = CheckForUnsuitableIndexForMerging(indexData);
if (failComments.Count != 0)
{
indexData.Comment = string.Join(Environment.NewLine, failComments);
indexData.IsSuitedForMerge = false;
mergeData.MergedData = indexData;
mergedIndexesData.Add(mergeData);
continue;
}
mergeData.ProposedForMerge.Add(indexData);
foreach (IndexData current in indexes) // Note, we have O(N**2) here, known and understood
{
if (current.IsMapReduceOrMultiMap)
{
continue;
}
if (mergeData.ProposedForMerge.All(other => CanMergeIndexes(other, current)) == false)
{
continue;
}
if (AreSelectClausesCompatible(current, indexData) == false)
{
continue;
}
current.IsSuitedForMerge = true;
mergeData.ProposedForMerge.Add(current);
}
mergedIndexesData.Add(mergeData);
}
return(mergedIndexesData);
}
private static void TrySetCollectionName(MergeProposal mergeProposal, MergeSuggestions mergeSuggestion)
{
if (mergeProposal.ProposedForMerge[0].Collection != null)
{
mergeSuggestion.Collection = mergeProposal.ProposedForMerge[0].Collection;
}
else if (mergeProposal.ProposedForMerge[0].FromExpression is SimpleNameSyntax name)
{
mergeSuggestion.Collection = name.Identifier.ValueText;
}
else if (mergeProposal.ProposedForMerge[0].FromExpression is MemberAccessExpressionSyntax member)
{
var identifier = ExtractIdentifierFromExpression(member);
if (identifier == "docs")
{
mergeSuggestion.Collection = ExtractValueFromExpression(member);
}
}
}
