private static List <string> GetResultColumns(HbmReturnDiscriminator discriminatorSchema)
{
string column = Unquote(discriminatorSchema.column);
List <string> allResultColumns = new List <string>();
if (column != null)
{
allResultColumns.Add(column);
}
return(allResultColumns);
}
private IDictionary <string, string[]> BindPropertyResults(string alias, HbmReturnDiscriminator discriminatorSchema,
HbmReturnProperty[] returnProperties, PersistentClass pc)
{
Dictionary <string, string[]> propertyresults = new Dictionary <string, string[]>();
// maybe a concrete SQLpropertyresult type, but Map is exactly what is required at the moment
if (discriminatorSchema != null)
{
propertyresults["class"] = GetResultColumns(discriminatorSchema).ToArray();
}
List <HbmReturnProperty> properties = new List <HbmReturnProperty>();
List <string> propertyNames = new List <string>();
foreach (HbmReturnProperty returnPropertySchema in returnProperties ?? new HbmReturnProperty[0])
{
string name = returnPropertySchema.name;
if (pc == null || name.IndexOf('.') == -1)
{
//if dotted and not load-collection nor return-join
//regular property
properties.Add(returnPropertySchema);
propertyNames.Add(name);
}
else
{
// Reorder properties
// 1. get the parent property
// 2. list all the properties following the expected one in the parent property
// 3. calculate the lowest index and insert the property
int dotIndex = name.LastIndexOf('.');
string reducedName = name.Substring(0, dotIndex);
IValue value = pc.GetRecursiveProperty(reducedName).Value;
IEnumerable <Mapping.Property> parentPropIter;
if (value is Component)
{
Component comp = (Component)value;
parentPropIter = comp.PropertyIterator;
}
else if (value is ToOne)
{
ToOne toOne = (ToOne)value;
PersistentClass referencedPc = mappings.GetClass(toOne.ReferencedEntityName);
if (toOne.ReferencedPropertyName != null)
{
try
{
parentPropIter =
((Component)referencedPc.GetRecursiveProperty(toOne.ReferencedPropertyName).Value).PropertyIterator;
}
catch (InvalidCastException e)
{
throw new MappingException("dotted notation reference neither a component nor a many/one to one", e);
}
}
else
{
try
{
parentPropIter = ((Component)referencedPc.IdentifierProperty.Value).PropertyIterator;
}
catch (InvalidCastException e)
{
throw new MappingException("dotted notation reference neither a component nor a many/one to one", e);
}
}
}
else
{
throw new MappingException("dotted notation reference neither a component nor a many/one to one");
}
bool hasFollowers = false;
List <string> followers = new List <string>();
foreach (Mapping.Property prop in parentPropIter)
{
string currentPropertyName = prop.Name;
string currentName = reducedName + '.' + currentPropertyName;
if (hasFollowers)
{
followers.Add(currentName);
}
if (name.Equals(currentName))
{
hasFollowers = true;
}
}
int index = propertyNames.Count;
int followersSize = followers.Count;
for (int loop = 0; loop < followersSize; loop++)
{
string follower = followers[loop];
int currentIndex = GetIndexOfFirstMatchingProperty(propertyNames, follower);
index = currentIndex != -1 && currentIndex < index ? currentIndex : index;
}
propertyNames.Insert(index, name);
properties.Insert(index, returnPropertySchema);
}
}
ISet <string> uniqueReturnProperty = new HashedSet <string>();
foreach (HbmReturnProperty returnPropertySchema in properties)
{
string name = returnPropertySchema.name;
if ("class".Equals(name))
{
throw new MappingException(
"class is not a valid property name to use in a <return-property>, use <return-discriminator> instead"
);
}
//TODO: validate existing of property with the chosen name. (secondpass )
List <string> allResultColumns = GetResultColumns(returnPropertySchema);
if (allResultColumns.Count == 0)
{
throw new MappingException(
"return-property for alias " + alias +
" must specify at least one column or return-column name"
);
}
if (uniqueReturnProperty.Contains(name))
{
throw new MappingException(
"duplicate return-property for property " + name +
" on alias " + alias
);
}
uniqueReturnProperty.Add(name);
// the issue here is that for <return-join/> representing an entity collection,
// the collection element values (the property values of the associated entity)
// are represented as 'element.{propertyname}'. Thus the StringHelper.root()
// here puts everything under 'element' (which additionally has significant
// meaning). Probably what we need to do is to something like this instead:
// String root = StringHelper.root( name );
// String key = root; // by default
// if ( !root.equals( name ) ) {
// // we had a dot
// if ( !root.equals( alias ) {
// // the root does not apply to the specific alias
// if ( "elements".equals( root ) {
// // we specifically have a <return-join/> representing an entity collection
// // and this <return-property/> is one of that entity's properties
// key = name;
// }
// }
// }
// but I am not clear enough on the intended purpose of this code block, especially
// in relation to the "Reorder properties" code block above...
// String key = StringHelper.root( name );
string key = name;
string[] intermediateResults;
if (!propertyresults.TryGetValue(key, out intermediateResults))
{
propertyresults[key] = allResultColumns.ToArray();
}
else
{
ArrayHelper.AddAll(intermediateResults, allResultColumns); // TODO: intermediateResults not used after this
}
}
Dictionary <string, string[]> newPropertyResults = new Dictionary <string, string[]>();
foreach (KeyValuePair <string, string[]> entry in propertyresults)
{
newPropertyResults[entry.Key] = entry.Value;
}
return(newPropertyResults.Count == 0 ? (IDictionary <string, string[]>) new CollectionHelper.EmptyMapClass <string, string[]>() : newPropertyResults);
}