/// <summary>
/// 添加检索操作，不带过滤条件
/// </summary>
/// <param name="sqlExpression"></param>
/// <param name="fillDs"></param>
public override void AddAction(string sqlExpression,
DataSet fillDs, EnumDBReturnAccess enumReturn)
{
if (enumReturn == EnumDBReturnAccess.ExeNoQuery ||
enumReturn == EnumDBReturnAccess.SaveDS ||
enumReturn == EnumDBReturnAccess.Scalar)
{
ExtConsole.Write("该接口只提供填充数据集的功能！");
return;
}
Expression sql = this.createSqlAction();
sql.SqlBusiness = sqlExpression;
sql.ReturnDS = fillDs;
sql.EnumReturn = enumReturn;
this._executor.Actions.Add(sql);
}
/// <summary>
///
/// </summary>
/// <param name="sqlExpression"></param>
/// <param name="enumReturn"></param>
/// <param name="conditions"></param>
public override void AddAction(string sqlExpression,
EnumDBReturnAccess enumReturn, DBConditions conditions)
{
#region
if (enumReturn == EnumDBReturnAccess.SaveDS ||
enumReturn == EnumDBReturnAccess.FillDsByCustom ||
enumReturn == EnumDBReturnAccess.FillDsByStoredProcedure)
{
ExtConsole.Write("该接口不提供存储数据集或检索数据集功能！");
return;
}
Expression sql = this.createSqlAction();
sql.SqlBusiness = sqlExpression;
sql.EnumReturn = enumReturn;
sql.SqlConditions = conditions;
this._executor.Actions.Add(sql);
#endregion
}
/// <summary>
///
/// </summary>
/// <param name="expression"></param>
/// <returns></returns>
private static string getAllKeys(Expression expression)
{
#region
string keys = "";
if (expression.SqlConditions != null)
{
List <string> dskeys = expression.SqlConditions.DataSetKeys;
if (dskeys != null)
{
for (int i = 0; i < dskeys.Count; i++)
{
string temp = dskeys[i];
if (i == 0)
{
keys += temp;
}
else
{
keys += string.Format("+{0}", temp);
}
}
}
else
{
keys = getKeysByReturnDs(expression.ReturnDS);
}
}
else
{
keys = getKeysByReturnDs(expression.ReturnDS);
}
if (keys == "")
{
ExtConsole.Write("系统提示：未指定关联键，sql语句构建出错！");
}
return(keys);
#endregion
}
/// <summary>
/// 获取数据表的表名和第一关键字的字段名
/// </summary>
/// <param name="destDs"></param>
/// <param name="tablename"></param>
/// <param name="keyname"></param>
protected void gettablekey(DataSet destDs,
ref string tablename, ref string keyname)
{
#region
if (destDs.Tables.Count > 0)
{
tablename = destDs.Tables[0].TableName;
if (destDs.Tables[0].PrimaryKey.Length > 0)
{
keyname = destDs.Tables[0].PrimaryKey[0].ColumnName;
}
else
{
ExtConsole.Write("目标数据表中没有设定主键！");
}
}
else
{
ExtConsole.Write("传入的数据集没有DataTable！");
}
#endregion
}
/// <summary>
///
/// </summary>
/// <param name="willSaveDs"></param>
/// <returns></returns>
public String CreateBuilderSelect(DataSet willSaveDs)
{
#region
DataTable willsavedt = willSaveDs.Tables[0];
string tablename = willsavedt.TableName;
if (string.IsNullOrEmpty(tablename))
{
ExtConsole.Write("欲保存的数据集表名为NULL或者为空值！");
}
if (willsavedt.PrimaryKey.Length <= 0)
{
ExtConsole.Write("欲保存的数据集没有主键，不能自动生成sql语句！");
}
string keyfieldname = willSaveDs.Tables[0].PrimaryKey[0].ColumnName;
string sqlexpression = String.Format("select * from [{0}] where {1}='' ",
tablename, keyfieldname);
return(sqlexpression);
#endregion
}
