///// <summary>
/// 得到一个Model，根据主键查询
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="ID"></param>
/// <returns></returns>
public static T GetModel <T>(object ID) where T : new()
{
try
{
Type type = typeof(T);
string tableName = GetTableName(type);
//type.getp
PropertyInfo[] propertyArray = type.GetProperties(); //获取所有的公有属性
StringBuilder strSql = new StringBuilder();
strSql.Append("SELECT ");
//List<string> keys = new List<string>();
//暂时只支持一个主键
string keys = string.Empty;
List <SqlParameter> param = new List <SqlParameter>();
string tempPropName = string.Empty;
foreach (PropertyInfo property in propertyArray)
{
tempPropName = property.Name;
object[] objArray = property.GetCustomAttributes(typeof(EnitityMappingAttribute), true);
if (objArray.Length > 0)
{
EnitityMappingAttribute propAttr = objArray[0] as EnitityMappingAttribute;
if (propAttr.ColumnType == "IGNORE")
{
continue;
}
else if (propAttr.ColumnType == "KEY")
{
keys = tempPropName;
param.Add(new SqlParameter("@" + tempPropName, ID));
//break;
}
}
strSql.Append(tempPropName + ",");
}
if (string.IsNullOrEmpty(keys))
{
throw new Exception("未设置主键");
}
strSql.Remove(strSql.Length - 1, 1);
strSql.Append(" from " + tableName + " where ");
strSql.Append(keys + "=@" + keys);
DataSet ds = DbHelperSQL.Query(strSql.ToString(), param.ToArray());
//实体转换
if (ds.Tables.Count > 0 && ds.Tables[0].Rows.Count > 0)
{
T t = new T();
t = TranEntity <T>(propertyArray, ds.Tables[0].Rows[0]);
return(t);
}
return(default(T));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 得到一个Model，根据主键查询
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="ID"></param>
/// <returns></returns>
public static T GetModel <T>(object ID, string[] fieldsName) where T : new()
{
Type type = typeof(T);
string tableName = GetTableName(type);
PropertyInfo[] propertyArray = type.GetProperties(); //获取所有的公有属性
List <PropertyInfo> propList = new List <PropertyInfo>();
StringBuilder strSql = new StringBuilder();
strSql.Append("SELECT ");
//List<string> keys = new List<string>();
//暂时只支持一个主键
string keys = string.Empty;
List <SqlParameter> param = new List <SqlParameter>();
string tempPropName = string.Empty;
foreach (PropertyInfo property in propertyArray)
{
tempPropName = property.Name;
object[] objArray = property.GetCustomAttributes(typeof(EnitityMappingAttribute), true);
if (objArray.Length > 0)
{
EnitityMappingAttribute propAttr = objArray[0] as EnitityMappingAttribute;
if (propAttr.ColumnType == "IGNORE")
{
continue;
}
else if (propAttr.ColumnType == "KEY")
{
keys = tempPropName;
param.Add(new SqlParameter("@" + tempPropName, ID));
}
}
if (fieldsName.Length > 0 && fieldsName.Contains(tempPropName))
{
strSql.Append(tempPropName + ",");
propList.Add(property);
}
}
strSql.Remove(strSql.Length - 1, 1);
strSql.Append(" from " + tableName + " where ");
strSql.Append(keys + "=@" + keys);
//new DbHelperSQL(PubConstant.CompanyConnectionString);
DataSet ds = DbHelperSQL.Query(strSql.ToString(), param.ToArray());
//实体转换
if (ds.Tables.Count > 0 && ds.Tables[0].Rows.Count > 0)
{
T t = new T();
t = TranEntity <T>(propertyArray, ds.Tables[0].Rows[0]);
return(t);
}
return(default(T));
}
/// <summary>
/// 更新一个实体,添加到事务列表中
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="model"></param>
/// <param name="comm"></param>
/// <returns></returns>
public static List <CommonObject> Update <T>(T model, List <CommonObject> comm)
{
try
{
StringBuilder strSql = new StringBuilder();
Type type = typeof(T);
string tableName = GetTableName(type);
strSql.Append("update " + tableName + " set ");
PropertyInfo[] propertyArray = type.GetProperties(); //获取所有的公有属性
string keys = string.Empty, tempPropName = string.Empty;
List <SqlParameter> param = new List <SqlParameter>();
foreach (PropertyInfo property in propertyArray)
{
//if (string.IsNullOrEmpty(keys))
// keys = GetTableKey(property, tempPropName);
////如果主键是Int或long的自增类型，就不更新该字段
//if ((!string.IsNullOrEmpty(keys) && property.PropertyType.FullName == "System.Int32") || (!string.IsNullOrEmpty(keys) && property.PropertyType.FullName == "System.Int64"))
// continue;
object[] objArray = property.GetCustomAttributes(typeof(EnitityMappingAttribute), true);
if (objArray.Length > 0)
{
EnitityMappingAttribute propAttr = objArray[0] as EnitityMappingAttribute;
if (propAttr.ColumnType == "IGNORE")
{
continue;
}
if (propAttr.ColumnType == "KEY")
{
keys = property.Name;// GetTableKey(property, tempPropName);
param.Add(new SqlParameter("@" + keys, property.FastGetValue(model)));
continue;
}
}
tempPropName = property.Name;
strSql.Append(tempPropName + " = @" + tempPropName + ",");
param.Add(new SqlParameter("@" + tempPropName, property.FastGetValue(model)));
}
strSql.Remove(strSql.Length - 1, 1);
strSql.Append(" where ");
strSql.Append(keys + " = @" + keys);
comm.Add(new CommonObject(strSql.ToString(), param.ToArray()));
return(comm);
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 插入一个实体，添加到执行事务列表中
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="model"></param>
/// <param name="comm"></param>
/// <returns></returns>
public static List <CommonObject> Insert <T>(T model, List <CommonObject> comm)
{
try
{
StringBuilder strSql = new StringBuilder();
Type type = typeof(T);
string tableName = GetTableName(type);
strSql.Append("insert into " + tableName + "( ");
string insertFields = string.Empty, insertFieldParams = string.Empty, tempPropName = string.Empty;
List <SqlParameter> param = new List <SqlParameter>();
PropertyInfo[] propertyArray = type.GetProperties(); //获取所有的公有属性
string keys = string.Empty;
foreach (PropertyInfo property in propertyArray)
{
tempPropName = property.Name;
//如果主键是Int或long的自增类型，就不插入
if (string.IsNullOrEmpty(keys))
{
keys = GetTableKey(property, tempPropName);
if ((!string.IsNullOrEmpty(keys) && property.PropertyType.FullName == "System.Int32") || (!string.IsNullOrEmpty(keys) && property.PropertyType.FullName == "System.Int64"))
{
continue;
}
}
object[] objArray = property.GetCustomAttributes(typeof(EnitityMappingAttribute), true);
if (objArray.Length > 0)
{
EnitityMappingAttribute propAttr = objArray[0] as EnitityMappingAttribute;
if (propAttr.ColumnType == "IGNORE")
{
continue;
}
}
insertFields += tempPropName + ",";
insertFieldParams += "@" + tempPropName + ",";
param.Add(new SqlParameter("@" + tempPropName, property.FastGetValue(model)));
}
insertFields = insertFields.Remove(insertFields.Length - 1, 1);
insertFieldParams = insertFieldParams.Remove(insertFieldParams.Length - 1, 1);
strSql.Append(insertFields + ") values (" + insertFieldParams + ") ;");
comm.Add(new CommonObject(strSql.ToString(), param.ToArray()));
return(comm);
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
/// 获取主键列
/// </summary>
/// <param name="property"></param>
/// <param name="tempPropName"></param>
/// <returns></returns>
private static string GetTableKey(PropertyInfo property, string tempPropName)
{
string keys = string.Empty;
object[] objArray = property.GetCustomAttributes(typeof(EnitityMappingAttribute), true);
if (objArray.Length > 0)
{
EnitityMappingAttribute propAttr = objArray[0] as EnitityMappingAttribute;
if (propAttr.ColumnType.Equals("KEY"))
{
keys = tempPropName;
}
}
return(keys);
}
/// <summary>
/// 获取表明
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
private static string GetTableName(Type type)
{
string tableName = string.Empty;
object[] objArray = type.GetCustomAttributes(typeof(EnitityMappingAttribute), false);
if (objArray.Length > 0)
{
EnitityMappingAttribute attr = objArray[0] as EnitityMappingAttribute;
tableName = attr.TableName;
}
else
{
tableName = type.Name;
}
return(tableName);
}
