public System.Data.IDbCommand GenerateSelectItemsSql <T>(object ob, PropertyInfo ParentInfo)
{
//初始化一个Command
System.Data.SqlClient.SqlCommand command = null;
var TargetType = typeof(T);
var ParentType = ob.GetType();
ORMHelper helper = new ORMHelper();
command = new System.Data.SqlClient.SqlCommand();
String TableName = helper.GetTable(TargetType);
var Properties = TargetType.GetProperties();
String Cols = "";
String WhereSql = "";
PropertyInfo ParentKey = null;
String ColumnName = "";
var parentAttribute = ParentInfo.GetCustomAttributes(typeof(ParentRelationAttribute), true);
if (parentAttribute.Length > 0)
{
ColumnName = (parentAttribute[0] as ParentRelationAttribute).ColumnName;
// ParentKey = ParentType.GetProperty(parentInfo.PropertyName);
}
else
{
var columAttribute = ParentInfo.GetCustomAttributes(typeof(ColumnAttribute), true);
if (columAttribute.Length > 0)
{
ColumnName = (columAttribute[0] as ColumnAttribute).ColumnName;
}
}
ParentKey = new ORMHelper().GetKeyPropertyInfo(ParentInfo.PropertyType);
if (ParentKey != null)
{
command.Parameters.Add(new SqlParameter("@" + ColumnName,
ParentKey.GetValue(ob, null) ?? ""));
WhereSql = "where [" + ColumnName + "]=@" + ColumnName
;
}
for (int i = 0; i < Properties.Length; i++)
{
if (Properties[i] != ParentInfo)
{
foreach (var Col in helper.GetColNameAttributes(Properties[i]))
{
String paramName = "@" + helper.GetColName(Col, Properties[i]);
string ColName = helper.GetColName(Col, Properties[i]);
if (Col.NoMap)
{
continue;
}
ColName = Col.ColumnName;
if (String.IsNullOrEmpty(ColName))
{
ColName = Properties[i].Name;
}
Cols += TableName + ".[" + ColName + "],";
// }
}
}
}
command.CommandText = "SELECT " + Cols.Substring(0, Cols.Length - 1) + " FROM " + TableName + WhereSql; //+ "(" +
return(command);
}
public System.Data.IDbCommand GenerateDynamicUpateSql <T>(T ob)
{
//初始化一个Command
System.Data.SqlClient.SqlCommand command = null;
var TargetType = typeof(T);
var patternfactory = new MSSQLScriptSqlPatternFactory();
var helper = new ORMHelper();
command = new System.Data.SqlClient.SqlCommand();
String TableName = helper.GetTable(TargetType);
var Properties = TargetType.GetProperties();
String Cols = "";
String update = "SELECT ";
String WhereSql = "";
for (int i = 0; i < Properties.Length; i++)
{
var attribute = Properties[i].GetCustomAttributes(typeof(DynamicColumnAttribute), true);
if (attribute.Length > 0)
{
var dynamicAttr = attribute[0] as DynamicColumnAttribute;
var proerpty = TargetType.GetProperty(dynamicAttr.SourcePropertyName);
if (proerpty != null)
{
var colattributes = helper.GetColNameAttributes(Properties[i]);
if (colattributes.Count > 0)
{
if (colattributes[0].NoMap)
{
continue;
}
else
{
string ColName = helper.GetColName(colattributes[0], Properties[i]);
String paramName = "@" + dynamicAttr.SourcePropertyName;
ColName = TableName + ".[" + ColName + "]";
command.Parameters.Add(paramName, proerpty.GetValue(ob, new object[] {}));
Cols += ColName + "=" + ColName + (dynamicAttr.Operation == DanymicOperationType.Add?"+":"-") + paramName + ",";
}
}
}
}
else
{
var cols = helper.GetColNameAttributes(Properties[i]);
if (cols.Count > 0)
{
foreach (var col in cols)
{
if (col.IsKey == true && String.IsNullOrEmpty(col.KeyGroupName))
{
var colname = helper.GetColName(col, Properties[i]);
var paramName = "@Pre" + colname;
WhereSql = " WHERE " + TableName + ".[" + colname + "]=" + paramName;
command.Parameters.Add(paramName, Properties[i].GetValue(ob, new object[] {}));
}
}
}
}
}
command.CommandText = "UPDATE " + TableName + " SET " + Cols.Substring(0, Cols.Length - 1) + WhereSql;
//selectedCommand.Add(TargetType, command);
return(command);
}
/// <summary>
///
/// </summary>
/// <param name="ob"></param>
/// <param name="cxt"></param>
/// <param name="TargetType"></param>
/// <returns></returns>
/// <remarks>
/// 2013.8.7
/// 将MSSQLScriptSqlPatternFactory改为可以得到列信息和名称信息
/// </remarks>
private System.Data.IDbCommand GenerateCreateSql(object ob, IDBContext cxt, Type TargetType)
{
System.Data.SqlClient.SqlCommand command = null;
var patternFactory = new MSSQLScriptSqlPatternFactory();
if (insertCommand.ContainsKey(TargetType) == false)
{
//得到表名
command = new System.Data.SqlClient.SqlCommand();
String TableName = helper.GetTable(TargetType);
var Properties = TargetType.GetProperties();
String Cols = "";
String Values = "";
for (int i = 0; i < Properties.Length; i++)
{
if (Properties[i].PropertyType.IsArray)
{
continue;
}
var attribute = helper.GetColNameAttributes(Properties[i]);
String paramName = "@" + Properties[i].Name;
string ColName = "";
if (attribute.Count > 0)
{
for (int k = 0; k < attribute.Count; k++)
{
var Col = attribute[k];
if (Col.NoMap == true)
{
continue;
}
else if (Col.IsAutoGenerate == GenerationType.OnInSert)
{
var auto = Properties[i].GetCustomAttributes(typeof(SerialNoObject), true);
if (auto.Length > 0)
{
var seriSetting = auto[0] as SerialNoObject;
Properties[i].SetValue(ob,
cxt.GetSerialNo(seriSetting.SerialPre, seriSetting.Len, seriSetting.DateFormateStr, ""), null);
}
else
{
continue;
}
}
ColName = helper.GetColName(Col, Properties[i]);
paramName = "@" + ColName;
var valueObject = new ORMHelper().GetDbObject(Properties[i], ob, Col.PropertyName);
if (valueObject is DateTime && valueObject != null && String.IsNullOrEmpty(Col.FormatStr) == false)
{
valueObject = ((DateTime)valueObject).ToString(Col.FormatStr);
}
Cols += "[" + ColName + "],";
Values += paramName + ",";
command.Parameters.Add(new System.Data.SqlClient.SqlParameter(paramName, valueObject ?? ""));
}
}
}
command.CommandText = "INSERT " + TableName + "(" + Cols.Substring(0, Cols.Length - 1) + ") VALUES(" + Values.Substring(0, Values.Length - 1) + ")";
insertCommand.Add(TargetType, command);
//return command;
}
command =
(insertCommand[TargetType] as System.Data.SqlClient.SqlCommand).Clone();
SetValues(ob, command, TargetType, "", true, cxt);
return(command);
}
