private static DMSDbProvider GetProvider(DMSDbType dbType)
{
Type type = typeof(DMS.MssqlObject);
if (dbType != DMSDbType.MsSql)
{
switch (dbType)
{
case DMSDbType.Access:
type = typeof(DMS.AccessObject);
break;
case DMSDbType.Mysql:
type = typeof(DMS.MysqlObject);
break;
case DMSDbType.Oracle:
type = typeof(DMS.OracleObject);
break;
case DMSDbType.SQLite:
type = typeof(DMS.SQLiteObject);
break;
default:
break;
}
}
TableMappingAttribute attribute = DMSExpression.GetTableMappingAttribute(type);
var provider = DMSExpression.GetDbProvider(attribute.DMSDbType, attribute.ConfigName);
return(provider);
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <typeparam name="TResult"></typeparam>
/// <param name="dms"></param>
/// <param name="strSql"></param>
/// <param name="dbParams"></param>
/// <returns></returns>
public static IEnumerable <TResult> Query <T, TResult>(this DMS <T> dms, string strSql, dynamic dbParams)
where T : class
where TResult : class
{
TableMappingAttribute attribute = DMSExpression.GetTableMappingAttribute(typeof(T));
var provider = DMSExpression.GetDbProvider(attribute.DMSDbType, attribute.ConfigName);
using (var conn = provider.GetOpenConnection())
{
return(DMSFrame.Access.DMSDbAccess.Query <TResult>(conn, typeof(TResult).FullName, strSql, dbParams, 0, null, true, 30));
}
}
/// <summary>
///
/// </summary>
/// <param name="elementType"></param>
private void changeInternalDbProvider(Type elementType)
{
if (elementType == null)
{
return;
}
if (InternalDbProvider != null)
{
return;
}
TableMappingAttribute attribute = DMSExpression.GetTableMappingAttribute(elementType);
string configName = attribute == null ? ConstExpression.TableConfigConfigName : attribute.ConfigName;
this.InternalDbProvider = DMSExpression.GetDbProvider(attribute == null ? DMSDbType.MsSql : attribute.DMSDbType, configName);
}
/// <summary>
///
/// </summary>
/// <param name="type"></param>
/// <param name="bDataBase"></param>
/// <param name="bWithLock"></param>
/// <param name="bNeedParams"></param>
/// <param name="bNeedQueryProvider"></param>
protected DMS(Type type, string bDataBase, bool bWithLock, bool bNeedParams, bool bNeedQueryProvider)
{
DMSFrameException.ThrowIfNull(type);
this.DataType = type;
this.CurrentType = type;
TableMappingAttribute attribute = DMSExpression.GetTableMappingAttribute(type);
this.TableExpressioin = DMSExpression.GetTableExpression(attribute.DMSDbType);
this.ColumnsExpressioin = DMSExpression.GetColumnsExpression(attribute.DMSDbType);
this.WhereExpressioin = DMSExpression.GetWhereExpression(attribute.DMSDbType);
this.OrderByExpressioin = DMSExpression.GetOrderByExpression(attribute.DMSDbType);
this.GroupByExpression = DMSExpression.GetGroupByExpression(attribute.DMSDbType);
this.HavingExpression = DMSExpression.GetHavingExpression(attribute.DMSDbType);
this.SplitExpression = DMSExpression.GetSplitExpression(attribute);
this.Provider = DMSExpression.GetDbProvider(attribute.DMSDbType, attribute.ConfigName);
this.dynamicParameters = new DynamicParameters();
DMSFrameException.ThrowIfNull(this.TableExpressioin, this.ColumnsExpressioin, this.WhereExpressioin, this.OrderByExpressioin, this.GroupByExpression, this.HavingExpression);
if (!string.IsNullOrEmpty(bDataBase))
{
this.TableExpressioin.bDataBase = bDataBase;
DMSDataBase myDb = new DMSDataBase(bDataBase);
this.TableExpressioin.Append <DMSDataBase, DMSDataBase>(q => myDb);
}
this.TableExpressioin.WithLock = bWithLock;
this.ExcuteType = DMSExcuteType.SELECT;
this.TableExpressioin.NeedParams = bNeedParams;
this.ColumnsExpressioin.NeedParams = bNeedParams;
this.WhereExpressioin.NeedParams = bNeedParams;
this.OrderByExpressioin.NeedParams = bNeedParams;
this.GroupByExpression.NeedParams = bNeedParams;
this.HavingExpression.NeedParams = bNeedParams;
this.TableExpressioin.SplitExpression = this.SplitExpression;
this.ColumnsExpressioin.SplitExpression = this.SplitExpression;
this.WhereExpressioin.SplitExpression = this.SplitExpression;
this.OrderByExpressioin.SplitExpression = this.SplitExpression;
this.GroupByExpression.SplitExpression = this.SplitExpression;
this.HavingExpression.SplitExpression = this.SplitExpression;
}
