/// <summary>
/// 根据实体类中自定义属性主键标识名称、值信息--create by guochao
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="type"></param>
/// <param name="Id"></param>
/// <returns></returns>
public EntityColumn GetIdColumn <T>(object Id)
{
EntityColumn column = null;
Type type = typeof(T);
PropertyInfo[] props = type.GetProperties();
if (props.Length > 0)
{
foreach (PropertyInfo proInfo in props)
{
object[] selftDefineAttrs = proInfo.GetCustomAttributes(typeof(EntityColumnAttribute), true);
if (selftDefineAttrs.Length > 0)
{
EntityColumnAttribute selftDefineAttr = (EntityColumnAttribute)selftDefineAttrs[0];
if (selftDefineAttr.IsPk)
{
column = new EntityColumn();
if (Id == null)
{
Id = DBNull.Value;
}
column.ColumnName = selftDefineAttr.FieldName;
column.ColumnValue = Id;
column.IsPk = selftDefineAttr.IsPk;
column.IsIdentity = selftDefineAttr.IsIdentity;
column.IsGetIdentityValue = selftDefineAttr.IsGetIdentityValue;
break;
}
}
}
}
return(column);
}
/// <summary>
/// 根据实体类中系统和自定义属性名称、值信息--create by guochao
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="type"></param>
/// <param name="t"></param>
/// <returns></returns>
public List <EntityColumn> GetColumnList <T>(T t)
{
List <EntityColumn> list = null;
Type type = typeof(T);
PropertyInfo[] props = type.GetProperties();
if (props.Length > 0)
{
list = new List <EntityColumn>();
foreach (PropertyInfo proInfo in props)
{
EntityColumn systemColumn = GetSystemProperInfo <T>(type, t, proInfo);
if (systemColumn != null)
{
EntityColumn selftDefineColumn = GetSelftDefineProperInfo <T>(type, t, proInfo);
if (selftDefineColumn != null)
{
list.Add(selftDefineColumn);
}
else
{
list.Add(systemColumn);
}
}
}
}
return(list);
}
/// <summary>
/// 获取单个自定义列名和值信息--create by guochao
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="type"></param>
/// <param name="t"></param>
/// <param name="proInfo"></param>
/// <returns></returns>
private EntityColumn GetSelftDefineProperInfo <T>(Type type, T t, PropertyInfo proInfo)
{
EntityColumn column = null;
if (proInfo != null)
{
object[] selftDefineAttrs = proInfo.GetCustomAttributes(typeof(EntityColumnAttribute), true);
if (selftDefineAttrs.Length > 0)
{
column = new EntityColumn();
EntityColumnAttribute selftDefineAttr = (EntityColumnAttribute)selftDefineAttrs[0];
object selftDefineAttrVal = type.GetProperty(selftDefineAttr.FieldName).GetValue(t, null);
if (selftDefineAttrVal == null)
{
selftDefineAttrVal = DBNull.Value;
}
column.ColumnName = selftDefineAttr.FieldName;
column.ColumnValue = selftDefineAttrVal;
column.IsPk = selftDefineAttr.IsPk;
column.IsIdentity = selftDefineAttr.IsIdentity;
column.IsGetIdentityValue = selftDefineAttr.IsGetIdentityValue;
}
}
return(column);
}
/// <summary>
/// 获取单个属性默认定义列名和值信息--create by guochao
/// </summary>
/// <param name="proInfo"></param>
/// <returns></returns>
private EntityColumn GetSystemProperInfo <T>(Type type, T t, PropertyInfo proInfo)
{
EntityColumn column = null;
if (proInfo != null)
{
column = new EntityColumn();
string attrName = proInfo.Name;
object attrValue = proInfo.GetValue(t, null);
if (attrValue == null)
{
attrValue = DBNull.Value;
}
column.ColumnName = proInfo.Name;
column.ColumnValue = attrValue;
}
return(column);
}
