public EntityMap BuildMap <T>()
{
var result = new EntityMap();
var type = typeof(T);
result.Table = type.Name;
var tableNameAttribute = type.GetCustomAttributes(typeof(TableNameAttribute), true)?.SingleOrDefault();
if (tableNameAttribute != null)
{
result.Table = ((TableNameAttribute)tableNameAttribute).TableName;
}
result.EntityType = type;
foreach (var prop in type.GetProperties())
{
//Convention: the primary key name is always 'Id'
//todo: add mapping logic customizable
var isPrimaryKey = string.Equals(prop.Name, "Id", StringComparison.InvariantCultureIgnoreCase);
var columnName = prop.Name;
var map = new EntityPropertyMap
{
IsPrimaryKey = isPrimaryKey,
Property = prop,
ColumnName = columnName,
};
var columnAttribute = prop.GetCustomAttributes(typeof(ColumnAttribute), true)?.SingleOrDefault();
if (columnAttribute != null)
{
var columnAttr = (ColumnAttribute)columnAttribute;
if (columnAttr.Ignore)
{
continue;
}
if (!string.IsNullOrWhiteSpace(columnAttr.ColumnName))
{
map.ColumnName = columnAttr.ColumnName;
}
if (columnAttr.IsPrimary)
{
map.IsPrimaryKey = true;
}
}
result.Properties.Add(map.ColumnName.ToLower(), map);
}
return(result);
}
private ICollection <EntityPropertyMap> GetProperties(string filecontent)
{
ICollection <EntityPropertyMap> properties = new List <EntityPropertyMap>();
string[] splitPublic = filecontent.Split("public");
foreach (string line in splitPublic)
{
//remove line with "class"
if (line.Contains("class"))
{
continue;
}
//remove line with "()" method
if (line.Contains("() {"))
{
continue;
}
//remove line with "using"
if (line.Contains("using"))
{
continue;
}
//remove get; set;
string[] splitcolch = line.Split("{");
string[] content = splitcolch[0].Split(" ", StringSplitOptions.RemoveEmptyEntries);
EntityPropertyMap prop = new EntityPropertyMap
{
Type = content[0],
Name = content[1]
};
properties.Add(prop);
}
return(properties);
}
protected virtual object GetPropertyValue <T>(EntityPropertyMap property, T item)
{
return(property.Property.GetValue(item));
}