/// <summary>
/// 将对象转换实体
/// </summary>
public Dapper.Model.site_channel DataRowToModel(DataRow row)
{
Dapper.Model.site_channel model = new Dapper.Model.site_channel();
if (row != null)
{
#region 主表信息======================
//利用反射获得属性的所有公共属性
Type modelType = model.GetType();
for (int i = 0; i < row.Table.Columns.Count; i++)
{
PropertyInfo proInfo = modelType.GetProperty(row.Table.Columns[i].ColumnName);
if (proInfo != null && row[i] != DBNull.Value)
{
proInfo.SetValue(model, row[i], null);//用索引值设置属性值
}
}
#endregion
#region 子表信息======================
StringBuilder strSql = new StringBuilder();
strSql.Append("select * from " + databaseprefix + "site_channel_field");
strSql.Append(" where channel_id=@channel_id");
SqlParameter[] parameters =
{
new SqlParameter("@channel_id", SqlDbType.Int, 4)
};
parameters[0].Value = model.id;
DataTable dt = DbHelperSQL.Query(strSql.ToString(), parameters).Tables[0];
if (dt.Rows.Count > 0)
{
int rowsCount = dt.Rows.Count;
List <Dapper.Model.site_channel_field> models = new List <Dapper.Model.site_channel_field>();
Dapper.Model.site_channel_field modelt;
for (int n = 0; n < rowsCount; n++)
{
modelt = new Dapper.Model.site_channel_field();
Type modeltType = modelt.GetType();
for (int i = 0; i < dt.Rows[n].Table.Columns.Count; i++)
{
PropertyInfo proInfo = modeltType.GetProperty(dt.Rows[n].Table.Columns[i].ColumnName);
if (proInfo != null && dt.Rows[n][i] != DBNull.Value)
{
proInfo.SetValue(modelt, dt.Rows[n][i], null);
}
}
models.Add(modelt);
}
model.channel_fields = models;
}
#endregion
}
return(model);
}
/// <summary>
/// 编辑扩展字段及频道数据表
/// </summary>
private void FieldUpdate(SqlConnection conn, SqlTransaction trans, Dapper.Model.site_channel newModel, Dapper.Model.site_channel oldModel)
{
if (newModel.channel_fields != null)
{
string newFieldIds = string.Empty; //用来存储新增的字段ID
//添加扩展字段
StringBuilder strSql1;
foreach (Dapper.Model.site_channel_field modelt in newModel.channel_fields)
{
strSql1 = new StringBuilder();
Dapper.Model.site_channel_field fieldModel = null;
if (oldModel.channel_fields != null)
{
fieldModel = oldModel.channel_fields.Find(p => p.field_id == modelt.field_id); //查找是否已经存在
}
if (fieldModel == null) //如果不存在则添加
{
newFieldIds += modelt.field_id + ","; //以逗号分隔开存储
strSql1.Append("insert into " + databaseprefix + "site_channel_field(");
strSql1.Append("channel_id,field_id)");
strSql1.Append(" values (");
strSql1.Append("@channel_id,@field_id)");
SqlParameter[] parameters1 =
{
new SqlParameter("@channel_id", SqlDbType.Int, 4),
new SqlParameter("@field_id", SqlDbType.Int, 4)
};
parameters1[0].Value = modelt.channel_id;
parameters1[1].Value = modelt.field_id;
DbHelperSQL.ExecuteSql(conn, trans, strSql1.ToString(), parameters1);
}
}
//添加频道数据表列
if (newFieldIds.Length > 0)
{
StringBuilder strSql2 = new StringBuilder();
strSql2.Append("select id,[name],data_type from " + databaseprefix + "article_attribute_field");
strSql2.Append(" where id in(" + newFieldIds.TrimEnd(',') + ")");
DataSet ds = DbHelperSQL.Query(conn, trans, strSql2.ToString());
foreach (DataRow dr in ds.Tables[0].Rows)
{
DbHelperSQL.ExecuteSql(conn, trans, "alter table " + databaseprefix + DTKeys.TABLE_CHANNEL_ARTICLE + oldModel.name + " add " + dr["name"].ToString() + " " + dr["data_type"].ToString());
}
}
}
//如果频道名称改变则需要更改数据表名
if (newModel.name != oldModel.name)
{
DbHelperSQL.ExecuteSql(conn, trans, "exec sp_rename '" + databaseprefix + DTKeys.TABLE_CHANNEL_ARTICLE + oldModel.name + "', '" + databaseprefix + DTKeys.TABLE_CHANNEL_ARTICLE + newModel.name + "'");
}
}
