public sTag DeleteSTag(sTag tag)
{
return tagAccessor.DeleteSTag(tag);
}
public sTag UpdateSTag(sTag tag)
{
return tagAccessor.UpdateSTag(tag);
}
//set parentId to 0 when it is at the top level
public sTag CreateSTag(int parentId, string value)
{
sTag tag = new sTag();
tag.value = value;
tag.parentId = parentId;
try
{
VestnDB db = new VestnDB();
db.sTag.Add(tag);
db.SaveChanges();
}
catch (InvalidOperationException)
{
return null;//bad id
}
return (tag);
}
private sTag GetEntitySTag(string value)
{
VestnDB db = new VestnDB();
sTag tag = new sTag();
try
{
tag = db.sTag.Where(u => u.value == value).First();
}
catch (Exception e)
{
return null;
}
return tag;
}
public sTag UpdateSTag(sTag tag)
{
sTag oldTag = GetSTag(tag.id);
if (oldTag.value != tag.value)
{
return tag;
}
try
{
VestnDB db = new VestnDB();
db.Entry(tag).State = EntityState.Modified;
db.SaveChanges();
}
catch (InvalidOperationException)
{
return null;
}
return tag;
}
public sTag DeleteSTag(sTag tag)
{
VestnDB db = new VestnDB();
db.sTag.Attach(tag);
tag = db.sTag.Remove(tag);
db.SaveChanges();
return tag;
}