/// <summary>
/// Load the mappings attributes for the specified type.
/// </summary>
/// <param name="assembly"></param>
static void LoadMappings(Type type)
{
// Check if this mapping has already been loaded.
if (_mappings.ContainsKey(type))
{
return;
}
lock (_mappings)
{
// Check if this mapping has already been loaded.
if (_mappings.ContainsKey(type))
{
return;
}
object[] attributes = type.GetCustomAttributes(typeof(DataEntityAttribute), false);
if (attributes.Length > 0)
{
DataEntityAttribute attribute = attributes[0] as DataEntityAttribute;
if (attribute == null || String.IsNullOrEmpty(attribute.TableName))
{
throw new Exception(String.Format("Cannot load mappings for type [{0}].", type.FullName));
}
TableMapping mapping = new TableMapping(attribute, type);
_mappings.Add(type, mapping);
}
}
}
/// <summary>
/// 获取实体sql信息
/// </summary>
/// <returns>实体sql信息</returns>
private EntitySqlInfo GetEntitySqlInfo()
{
EntitySqlInfo _info = (EntitySqlInfo)s_table[typeof(T).FullName];
//_info = null
if (_info == null)
{
// 用于支持扩展列的表名
_info = new EntitySqlInfo();
//_info.TableName = string.Format("[{0}]", typeof(T).Name);
_info.TableName = string.Format("{0}", typeof(T).Name);
// 如果有别名，则使用别名
DataEntityAttribute attribute = typeof(T).GetMyAttribute <DataEntityAttribute>();
if (attribute != null && !string.IsNullOrEmpty(attribute.Alias))
{
//_info.TableName = string.Format("[{0}]", attribute.Alias);
_info.TableName = string.Format("{0}", attribute.Alias);
}
// 获取字段名
foreach (PropertyInfo prop in typeof(T).GetProperties())
{
TransferProperty(prop, _info);
}
s_table[typeof(T).FullName] = _info;
}
return(_info);
}
public TableMapping(DataEntityAttribute tableAttribute, Type type) : this()
{
this.Key = tableAttribute.Key;
this.TableName = tableAttribute.TableName;
this.SequenceName = tableAttribute.SequenceName;
this.CachingEnabled = !tableAttribute.DisableCaching;
this.LoadColumns(type, null);
this.Initialize();
}
public CodeGenerator(Type entityType)
{
_entityType = entityType;
_sb = new StringBuilder(1024 * 20);
DataEntityAttribute entityAttr = _entityType.GetMyAttribute <DataEntityAttribute>();
string tableName;
if (entityAttr == null)
{
tableName = _entityType.Name;
}
else
{
tableName = string.IsNullOrEmpty(entityAttr.Alias) ? _entityType.Name : entityAttr.Alias;
}
_tableInfo = new DbMapInfo(tableName, _entityType.Name, null, null);
_allFields = new List <DbMapInfo>(20);
_keyFields = new List <DbMapInfo>(3);
DbMapInfo info = null;
foreach (PropertyInfo property in _entityType.GetProperties(BindingFlags.Instance | BindingFlags.Public))
{
string fieldName = property.Name;
DataColumnAttribute attr = property.GetMyAttribute <DataColumnAttribute>();
if (attr != null)
{
if (string.IsNullOrEmpty(attr.Alias) == false)
{
fieldName = attr.Alias;
}
info = new DbMapInfo(fieldName, property.Name, attr, property);
_allFields.Add(new DbMapInfo(fieldName, property.Name, attr, property));
if (attr.Identity)
{
_identityField = info;
}
if (attr.TimeStamp)
{
_timeStampField = info;
}
if (attr.SeqGuid)
{
_seqGuidField = info;
}
if (attr.PrimaryKey)
{
_keyFields.Add(info);
}
}
else
{
_allFields.Add(new DbMapInfo(fieldName, property.Name, null, property));
}
}
}
