internal static void AddType(Type type )
{
TableMeta meta;
if (TableMetaDictionaryType.TryGetValue(type, out meta))
{
meta.CheckExists = true;
return;
}
meta = new TableMeta() { _tableType = type };
GetTableName( meta, type );
var errors = CreateColumnList( meta, type );
if (errors.Any())
meta = new TableMetaInvalid() {Reasons = errors.ToList()};
if (meta.Columns.Count == 0 && !(meta is TableMetaInvalid))
meta = new TableMetaInvalid();
if (meta.Columns.Count == 0)
((TableMetaInvalid)meta).Reasons.Add("No columns defined");
else
meta.HasAutoIncrementPrimaryKey = meta.Columns.Any( col => col.PrimaryKey && col.AutoIncrement );
DbConnection.BroadcastToListeners("Add new type: " + type.FullName);
TableMetaDictionaryType.Add( type, meta );
}
public static TableMeta ToMeta(string tableName)
{
// Parse a string like;
// CREATE TABLE SimpleTable ([Id] long not null,[Test] nvarchar(300) ,[When] date , PRIMARY KEY ([Id] ))
TableMeta meta = new TableMeta {ParameterizedTableName = tableName};
string schema = GetDbSchemaFor( tableName );
if (string.IsNullOrEmpty( schema ))
return null;
StringParse parse = new StringParse( schema );
if (!parse.Read("CREATE TABLE " + tableName + " ("))
return null;
while (!parse.Peek(")") && !parse.IsEmpty)
{
parse.SkipWhitespace();
if (parse.Peek("[") || parse.Contains(' '))
{
string fieldName;
if (parse.Peek("["))
{
fieldName = parse.ReadBetween('[', ']');
}
else
{
if (parse.Peek("PRIMARY KEY"))
break;
fieldName = parse.ReadTo(' ');
}
parse.SkipWhitespace();
TableColumn tc = new TableColumn
{
Name = fieldName,
Get = (t, inst) => ((AnonmousTable) inst)[ t.RawName ],
Set = (t, inst, val) => ((AnonmousTable) inst)[ t.RawName ] = val
};
parse.While( KeywordTriggerDefinitions, tc );
meta.Columns.Add(tc);
}
if (parse.Peek(","))
{
parse.Read(",");
continue;
}
if (parse.Peek(")"))
break;
if (parse.Peek("PRIMARY KEY"))
break;
throw new NotImplementedException("Incomplete parsing of " + tableName);
}
return meta;
}
private static void GetTableName( TableMeta meta, Type type )
{
var attributes = type.GetCustomAttributes( typeof( TableAttribute ), true );
meta.ParameterizedTableName = string.IsNullOrEmpty( ((TableAttribute)attributes[0]).Name )
? type.Name
: ((TableAttribute)attributes[0]).Name;
meta.TableParamCount = meta.ParameterizedTableName.Count( c => c == '{' );
}
private static IEnumerable<string> CreateColumnList( TableMeta meta, Type type )
{
List<PropertyFieldInfo> members = new List<PropertyFieldInfo>();
foreach (PropertyInfo pi in type.GetProperties( BindingFlags.Public | BindingFlags.Instance ))
members.Add(new PropertyFieldInfo(pi));
foreach (FieldInfo fi in type.GetFields( BindingFlags.Public | BindingFlags.Instance ))
members.Add(new PropertyFieldInfo(fi));
foreach (var member in members)
{
var definition = member.FieldAttribute();
if (definition == null)
continue;
if (!Column.IsSupported(member.Type))
{
yield return "Unsupported type " + member.Type + " in field " + member.Name;
continue;
}
if (string.IsNullOrEmpty( definition.Name ))
definition.Name = member.Name;
meta.Columns.Add(new TableColumn(definition, member));
}
yield break;
}
