/// <summary>
/// 对Update类SQL语句进行参数处理
/// </summary>
/// <param name="sqlStatement">待处理的SQL语句</param>
/// <param name="db">数据访问对象</param>
/// <returns>处理后的参数数组</returns>
private List <IDbDataParameter> ParameterHandlerForUpdate(SqlStatement sqlStatement, ITeldDatabase db)
{
var updateSql = sqlStatement as UpdateSqlStatement;
var parameters = new List <IDbDataParameter>(updateSql.UpdateFields.ChildCollection.Count);
for (int parameterIndex = 0; parameterIndex < updateSql.UpdateFields.ChildCollection.Count; parameterIndex++)
{
UpdateField updateField = updateSql.UpdateFields.ChildCollection[parameterIndex] as UpdateField;
if (updateField == null)
{
throw new Exception("ParameterHandlerForUpdate.updateField, parameterIndex:" + parameterIndex);
}
FieldValue feildValue = updateSql.UpdateValues.ChildCollection[parameterIndex] as FieldValue;
if (feildValue == null)
{
throw new Exception("ParameterHandlerForUpdate.feildValue, parameterIndex:" + parameterIndex);
}
parameters.Add(ParameterHandler(db, feildValue, updateField));
}
return(parameters);
}
private FieldValue fieldValue; //主键字段值
#endregion
#region 构造函数
/// <summary>
/// 构造函数
/// </summary>
public SqlPrimaryKeyField()
: base()
{
//this.field = new Field();
this.fieldValue = new FieldValue();
}
