private RelationData GetRelation(uint relationId)
{
if (!allRelations.ContainsKey(relationId))
{
using (var scope = new DatabaseScope(databaseName))
{
var loadedRelation = relationsRepository.Get(relationId);
RelationData relationData = null;
if (loadedRelation != null)
{
relationData = new RelationData(loadedRelation);
}
allRelations.Add(relationId, relationData);
}
}
return(allRelations[relationId]);
}
protected override void OnExecute()
{
using (var scope = new DatabaseScope(context.Database.Name))
{
var existingIndices = indicesRepository.GetAll();
foreach (var i in existingIndices)
{
var relation = relationsRepository.Get(i.RelationID);
var relationData = new RelationData(relation);
var attributes = new List <AttributeData>();
var includedAttributes = new List <AttributeData>();
foreach (var atrributeName in i.AttributesNames)
{
var attribute = attributesRepository.Get(relation.ID, atrributeName);
var toAdd = new AttributeData(relationData, attribute);
if (IsIncludedAttribute(i.CreateDefinition, attribute.Name))
{
includedAttributes.Add(toAdd);
}
else
{
attributes.Add(toAdd);
}
}
var existingIndexToAdd = new IndexDefinition(Convert(i.AccessMethod), relationData, attributes, includedAttributes);
if (context.StatementsData.AllQueriesByRelation.TryGetValue(relation.ID, out var possibleQueriesForIndex))
{
foreach (var statementQueryPair in possibleQueriesForIndex)
{
var normalizedStatementID = statementQueryPair.NormalizedStatementID;
var normalizedStatement = context.StatementsData.All[normalizedStatementID].NormalizedStatement;
var query = statementQueryPair.Query;
var extractedData = context.StatementsExtractedData.DataPerQuery[statementQueryPair];
if (IndexApplicability.IsIndexApplicableForQuery(extractedData, existingIndexToAdd))
{
context.IndicesDesignData.ExistingIndices.TryAddPossibleIndices(new[] { existingIndexToAdd }, normalizedStatement, query);
}
}
}
}
}
}
