private static IEnumerable<EduHubField> ExpandField(EduHubField Field, int FieldCount)
{
if (FieldCount < 1)
throw new ArgumentOutOfRangeException("FieldCount", "FieldCount should not be less than 1");
if (FieldCount > 99)
throw new ArgumentOutOfRangeException("FieldCount", "FieldCount should not be greater than 99");
if (FieldCount != 1)
{
// Array Field
for (int i = 1; i <= FieldCount; i++)
{
yield return new EduHubField(
Entity: Field.Entity,
Name: $"{Field.Name}{i:00}",
Description: Field.Description,
Type: Field.Type,
TypeDescription: Field.TypeDescription,
TypeMaxLength: Field.TypeMaxLength,
IsNullable: Field.IsNullable,
IsIdentity: Field.IsIdentity,
ForeignParentKey: Field.ForeignParentKey);
}
}
else
{
yield return Field;
}
}
internal void AddField(EduHubField Field)
{
fields.Add(Field);
}
private static IEnumerable<EduHubField> ParseFields(EduHubEntity Entity, IEnumerator<string> SchemaIterator)
{
EduHubField field = null;
int fieldArraySize = 0;
while (SchemaIterator.MoveNext())
{
if (!string.IsNullOrWhiteSpace(SchemaIterator.Current) && !TestFieldIgnore.IsMatch(SchemaIterator.Current))
{
var commentMatch = TestFieldComment.Match(SchemaIterator.Current);
if (commentMatch.Success)
{
if (field != null)
{
field.AppendDescription(commentMatch.Groups[1].Value);
}
}
else
{
var fieldMatch = TestField.Match(SchemaIterator.Current);
if (fieldMatch.Success)
{
if (field != null)
{
foreach (var expandedField in ExpandField(field, fieldArraySize))
{
yield return expandedField;
}
}
string name = fieldMatch.Groups[1].Value.Trim();
string description = fieldMatch.Groups[6].Success ? fieldMatch.Groups[6].Value.Trim() : string.Empty;
fieldArraySize = fieldMatch.Groups[4].Success ? int.Parse(fieldMatch.Groups[4].Value) : 1;
string type, typeDescription;
int typeMaxLength;
DetermineFieldType(fieldMatch.Groups[5].Value.ToUpperInvariant(), out type, out typeDescription, out typeMaxLength);
Tuple<string, string> foreignParentKey = fieldMatch.Groups[2].Success
? Tuple.Create(fieldMatch.Groups[2].Value, fieldMatch.Groups[3].Value)
: null;
field = new EduHubField(
Entity: Entity,
Name: name,
Description: description,
Type: type,
TypeDescription: typeDescription,
TypeMaxLength: typeMaxLength,
IsNullable: true,
IsIdentity: false,
ForeignParentKey: foreignParentKey);
}
else
{
if (TestFieldDirective.IsMatch(SchemaIterator.Current))
{
// End of Fields Declaration (directives started)
break;
}
else
{
throw new InvalidOperationException("Unexpected schema format");
}
}
}
}
}
foreach (var expandedField in ExpandField(field, fieldArraySize))
{
yield return expandedField;
}
}
internal void AddField(EduHubField Field)
{
fields.Add(Field);
}
