/// <summary>
/// 得到一个对象实体(重载，带事务)
/// </summary>
public Dapper.Model.article_category GetModel(SqlConnection conn, SqlTransaction trans, int id)
{
StringBuilder strSql = new StringBuilder();
StringBuilder str1 = new StringBuilder();
Dapper.Model.article_category model = new Dapper.Model.article_category();
//利用反射获得属性的所有公共属性
PropertyInfo[] pros = model.GetType().GetProperties();
foreach (PropertyInfo p in pros)
{
//拼接字段，忽略List<T>
if (!p.Name.Equals("category_brands") && !p.Name.Equals("category_specs"))
{
str1.Append(p.Name + ",");
}
}
strSql.Append("select top 1 " + str1.ToString().Trim(','));
strSql.Append(" from " + databaseprefix + "article_category");
strSql.Append(" where id=@id");
SqlParameter[] parameters =
{
new SqlParameter("@id", SqlDbType.Int, 4)
};
parameters[0].Value = id;
DataTable dt = DbHelperSQL.Query(conn, trans, strSql.ToString(), parameters).Tables[0];
if (dt.Rows.Count > 0)
{
return(DataRowToModel(dt.Rows[0]));
}
else
{
return(null);
}
}
/// <summary>
/// 得到一个对象实体
/// </summary>
public Dapper.Model.article_category GetModel(int id)
{
StringBuilder strSql = new StringBuilder();
StringBuilder str1 = new StringBuilder();
Dapper.Model.article_category model = new Dapper.Model.article_category();
//利用反射获得属性的所有公共属性
PropertyInfo[] pros = model.GetType().GetProperties();
foreach (PropertyInfo p in pros)
{
//拼接字段，忽略List<T>
if (!typeof(System.Collections.IList).IsAssignableFrom(p.PropertyType))
{
str1.Append(p.Name + ",");
}
}
strSql.Append("select top 1 " + str1.ToString().Trim(','));
strSql.Append(" from " + databaseprefix + "article_category");
strSql.Append(" where id=@id");
SqlParameter[] parameters =
{
new SqlParameter("@id", SqlDbType.Int, 4)
};
parameters[0].Value = id;
DataTable dt = DbHelperSQL.Query(strSql.ToString(), parameters).Tables[0];
if (dt.Rows.Count > 0)
{
return(DataRowToModel(dt.Rows[0]));
}
else
{
return(null);
}
}
/// <summary>
/// 将对象转换实体
/// </summary>
public Dapper.Model.article_category DataRowToModel(DataRow row)
{
Dapper.Model.article_category model = new Dapper.Model.article_category();
if (row != null)
{
//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
}
}
}
return(model);
}
/// <summary>
/// 修改子节点的ID列表及深度（自身迭代）
/// </summary>
private void UpdateChilds(SqlConnection conn, SqlTransaction trans, int parent_id)
{
//查找父节点信息
Dapper.Model.article_category model = GetModel(conn, trans, parent_id);
if (model != null)
{
//查找子节点
string strSql = "select id from " + databaseprefix + "article_category where parent_id=" + parent_id;
DataSet ds = DbHelperSQL.Query(conn, trans, strSql);//带事务
foreach (DataRow dr in ds.Tables[0].Rows)
{
//修改子节点的ID列表及深度
int id = int.Parse(dr["id"].ToString());
string class_list = model.class_list + id + ",";
int class_layer = model.class_layer + 1;
DbHelperSQL.ExecuteSql(conn, trans, "update " + databaseprefix + "article_category set class_list='" + class_list + "', class_layer=" + class_layer + " where id=" + id);//带事务
//调用自身迭代
this.UpdateChilds(conn, trans, id);//带事务
}
}
}
/// <summary>
/// 增加一条数据
/// </summary>
public int Add(Dapper.Model.article_category model)
{
using (SqlConnection conn = new SqlConnection(DbHelperSQL.connectionString))
{
conn.Open();
using (SqlTransaction trans = conn.BeginTransaction())
{
try
{
#region 主表信息===========================
StringBuilder strSql = new StringBuilder();
StringBuilder str1 = new StringBuilder(); //数据字段
StringBuilder str2 = new StringBuilder(); //数据参数
//利用反射获得属性的所有公共属性
PropertyInfo[] pros = model.GetType().GetProperties();
List <SqlParameter> paras = new List <SqlParameter>();
strSql.Append("insert into " + databaseprefix + "article_category(");
foreach (PropertyInfo pi in pros)
{
//如果不是主键及List<T>则追加sql字符串
if (!pi.Name.Equals("id") && !typeof(System.Collections.IList).IsAssignableFrom(pi.PropertyType))
{
//判断属性值是否为空
if (pi.GetValue(model, null) != null)
{
str1.Append(pi.Name + ","); //拼接字段
str2.Append("@" + pi.Name + ","); //声明参数
paras.Add(new SqlParameter("@" + pi.Name, pi.GetValue(model, null))); //对参数赋值
}
}
}
strSql.Append(str1.ToString().Trim(','));
strSql.Append(") values (");
strSql.Append(str2.ToString().Trim(','));
strSql.Append(") ");
strSql.Append(";select @@IDENTITY;");
object obj = DbHelperSQL.GetSingle(conn, trans, strSql.ToString(), paras.ToArray());
model.id = Convert.ToInt32(obj);
//查询父节点的深度赋值
if (model.parent_id > 0)
{
Dapper.Model.article_category model2 = GetModel(conn, trans, model.parent_id);
model.class_list = model2.class_list + model.id + ",";
model.class_layer = model2.class_layer + 1;
}
else
{
model.class_list = "," + model.id + ",";
model.class_layer = 1;
}
//修改节点列表和深度
DbHelperSQL.ExecuteSql(conn, trans, "update " + databaseprefix + "article_category set class_list='" + model.class_list + "', class_layer=" + model.class_layer + " where id=" + model.id);
#endregion
trans.Commit();//提交事务
}
catch
{
trans.Rollback();//回滚事务
return(0);
}
}
}
return(model.id);
}
/// <summary>
/// 更新一条数据
/// </summary>
public bool Update(Dapper.Model.article_category model)
{
using (SqlConnection conn = new SqlConnection(DbHelperSQL.connectionString))
{
conn.Open();
using (SqlTransaction trans = conn.BeginTransaction())
{
try
{
#region 主表信息===========================
//先判断选中的父节点是否被包含
if (IsContainNode(model.id, model.parent_id))
{
//查找旧数据
Dapper.Model.article_category oldModel = GetModel(model.id);
//查找旧父节点数据
string class_list = "," + model.parent_id + ",";
int class_layer = 1;
if (oldModel.parent_id > 0)
{
Dapper.Model.article_category oldParentModel = GetModel(conn, trans, oldModel.parent_id);//带事务
class_list = oldParentModel.class_list + model.parent_id + ",";
class_layer = oldParentModel.class_layer + 1;
}
//先提升选中的父节点
DbHelperSQL.ExecuteSql(conn, trans, "update " + databaseprefix + "article_category set parent_id=" + oldModel.parent_id + ",class_list='" + class_list + "', class_layer=" + class_layer + " where id=" + model.parent_id); //带事务
UpdateChilds(conn, trans, model.parent_id); //带事务
}
//更新子节点
if (model.parent_id > 0)
{
Dapper.Model.article_category model2 = GetModel(conn, trans, model.parent_id);//带事务
model.class_list = model2.class_list + model.id + ",";
model.class_layer = model2.class_layer + 1;
}
else
{
model.class_list = "," + model.id + ",";
model.class_layer = 1;
}
//更新本栏目类别信息
StringBuilder strSql = new StringBuilder();
StringBuilder str1 = new StringBuilder();
//利用反射获得属性的所有公共属性
PropertyInfo[] pros = model.GetType().GetProperties();
List <SqlParameter> paras = new List <SqlParameter>();
strSql.Append("update " + databaseprefix + "article_category set ");
foreach (PropertyInfo pi in pros)
{
//如果不是主键及List<T>则追加sql字符串
if (!pi.Name.Equals("id") && !typeof(System.Collections.IList).IsAssignableFrom(pi.PropertyType))
{
//判断属性值是否为空
if (pi.GetValue(model, null) != null)
{
str1.Append(pi.Name + "=@" + pi.Name + ","); //声明参数
paras.Add(new SqlParameter("@" + pi.Name, pi.GetValue(model, null))); //对参数赋值
}
}
}
strSql.Append(str1.ToString().Trim(','));
strSql.Append(" where id=@id");
paras.Add(new SqlParameter("@id", model.id));
DbHelperSQL.ExecuteSql(conn, trans, strSql.ToString(), paras.ToArray());
//更新子节点
UpdateChilds(conn, trans, model.id);
#endregion
trans.Commit();//提交事务
}
catch (Exception ex)
{
trans.Rollback();//回滚事务
return(false);
}
}
}
return(true);
}
