/// <summary>
/// 根据指定的条件，从数据阅读器中赛选出需要的实体对象。本方法适用于数据量不是很大的数据库表，要加强效率，请使用OQL表达式。
/// </summary>
/// <param name="condition">查询条件</param>
/// <returns>实体对象列表</returns>
public static List <T> QueryList(ConditionHandle <T> condition)
{
AdoHelper db = MyDB.Instance;
T entity = new T();
string sql = "SELECT " + string.Join(",", entity.PropertyNames) + " FROM " + entity.TableName;
IDataReader reader = db.ExecuteDataReader(sql);
List <T> list = new List <T>();
using (reader)
{
int fcount = entity.PropertyNames.Length;
while (reader.Read())
{
object[] values = new object[fcount];
reader.GetValues(values);
T t = new T();
t.PropertyNames = entity.PropertyNames;
t.PropertyValues = values;
if (condition(t)) //根据条件过滤
{
list.Add(t);
}
}
}
return(list);
}
public void AttachPreprocessorMacro(string macro, ConditionHandle conditionHandle = null)
{
if (ConditionsPerMacro.ContainsKey(macro))
{
_Builder.FlagIncomplete(ReverseFileConditionWarning.MultipleConditionsPerMacro);
}
ConditionsPerMacro[macro] = conditionHandle;
}
public void AttachFile(string encodedPath, ConditionHandle conditionHandle = null)
{
if (ConditionsPerFile.ContainsKey(encodedPath))
{
_Builder.FlagIncomplete(ReverseFileConditionWarning.MultipleConditionsPerFile);
}
ConditionsPerFile[encodedPath] = conditionHandle;
}
public void AttachIncludeDirectoryCondition(string dir, ConditionHandle conditionHandle)
{
if (!IncludeDirs.TryGetValue(dir, out var value))
{
throw new Exception("Unknown include dir: " + dir);
}
if (value != null)
{
throw new Exception("Include dir already conditional: " + dir);
}
IncludeDirs[dir] = conditionHandle;
}
