public static CommitSelectionExpression AreReleases(this CommitSelectionExpression parentExp)
{
return(parentExp.Reselect(s =>
from c in s
join r in parentExp.Queryable <Release>() on c.ID equals r.CommitID
select c
));
}
public static CommitSelectionExpression AreBugFixes(this CommitSelectionExpression parentExp)
{
return(parentExp.Reselect(s =>
from c in s
join bf in parentExp.Queryable <BugFix>() on c.ID equals bf.CommitID
select c
));
}
public static CommitSelectionExpression ContainModifications(this CommitSelectionExpression parentExp)
{
return(parentExp.Reselect(s =>
(
from c in s
join m in parentExp.Selection <Modification>() on c.ID equals m.CommitID
select c
).Distinct()
));
}
public static CommitSelectionExpression AreNotBugFixes(this CommitSelectionExpression parentExp)
{
return(parentExp.Reselect(s =>
from c in s
join bf in parentExp.Queryable <BugFix>() on c.ID equals bf.CommitID into j
from x in j.DefaultIfEmpty()
where
x == null
select c
));
}
public static CommitSelectionExpression TouchFiles(this CommitSelectionExpression parentExp)
{
return(parentExp.Reselect(s =>
(
from c in s
join m in parentExp.Queryable <Modification>() on c.ID equals m.CommitID
join f in parentExp.Selection <ProjectFile>() on m.FileID equals f.ID
select c
).Distinct()
));
}
public static CommitSelectionExpression AreRefactorings(this CommitSelectionExpression parentExp)
{
return(parentExp.AreNotBugFixes().Reselect(s =>
(
from c in s
join m in parentExp.Queryable <Modification>() on c.ID equals m.CommitID
join cb in parentExp.Queryable <CodeBlock>() on m.ID equals cb.ModificationID
group cb by c into g
select new
{
Commit = g.Key,
Added = g.Where(x => x.Size > 0).Sum(x => x.Size),
Removed = -g.Where(x => x.Size < 0).Sum(x => x.Size)
}
).Where(x => x.Removed / x.Added >= 1d / 2).Select(x => x.Commit)
));
}
