static LikenessContainer GetLikeness(MappingModel.Collections.CollectionMapping currentMapping, MappingModel.Collections.CollectionMapping mapping)
{
var currentMemberName = GetMemberName(currentMapping.Member);
var mappingMemberName = GetMemberName(mapping.Member);
return(new LikenessContainer
{
Collection = currentMapping,
CurrentMemberName = currentMemberName,
MappingMemberName = mappingMemberName,
Differences = StringLikeness.EditDistance(currentMemberName, mappingMemberName)
});
}
public virtual void ProcessCollection(MappingModel.Collections.CollectionMapping mapping)
{
}
static MappingModel.Collections.CollectionMapping FindAlternative(IEnumerable <MappingModel.Collections.CollectionMapping> rs, MappingModel.Collections.CollectionMapping current, MappingModel.Collections.CollectionMapping otherSide)
{
var alternative = rs
.Where(x => x.ContainingEntityType == current.ContainingEntityType)
.Select(x => GetLikeness(x, otherSide))
.OrderBy(x => x.Differences)
.FirstOrDefault();
if (alternative == null)
{
return(null);
}
return(alternative.Collection);
}
static MappingModel.Collections.CollectionMapping PairExactMatches(IEnumerable <MappingModel.Collections.CollectionMapping> rs, MappingModel.Collections.CollectionMapping current, IEnumerable <MappingModel.Collections.CollectionMapping> potentialOtherSides)
{
var otherSide = potentialOtherSides.Single();
// got the other side of the relationship
// lets make sure that the side that we're on now (mapping!)
// is actually the relationship we want
var mapping = FindAlternative(rs, current, otherSide) ?? current;
mapping.OtherSide = otherSide;
otherSide.OtherSide = mapping;
return(mapping);
}
static MappingModel.Collections.CollectionMapping PairFuzzyMatches(IEnumerable <MappingModel.Collections.CollectionMapping> rs, MappingModel.Collections.CollectionMapping current, IEnumerable <MappingModel.Collections.CollectionMapping> potentialOtherSides)
{
// no exact matches found, drop down to a levenshtein distance
var mapping = current;
var likenesses = potentialOtherSides
.Select(x => GetLikeness(x, current))
.Where(likeness_within_threshold)
.OrderBy(x => x.Differences);
var first = likenesses.FirstOrDefault();
if (first == null || AnyHaveSameLikeness(likenesses, first))
{
// couldn't find a definitive match, return nothing and we'll handle
// this further up
return(null);
}
var otherSide = likenesses.First().Collection;
// got the other side of the relationship
// lets make sure that the side that we're on now (mapping!)
// is actually the relationship we want
mapping = FindAlternative(rs, mapping, otherSide) ?? mapping;
mapping.OtherSide = otherSide;
otherSide.OtherSide = mapping;
return(mapping);
}
static bool both_collections_point_to_each_others_types(MappingModel.Collections.CollectionMapping left, MappingModel.Collections.CollectionMapping right)
{
return(left.ContainingEntityType == right.ChildType &&
left.ChildType == right.ContainingEntityType);
}