public static bool DbDelete(this TSpider entity, DbSession session)
{
var query = IORMProvider.GetDbQueryBuilder(session);
query.DeleteBuilder.ComponentWhere.Add(new ComponentValueOfWhere(TSpiderProperties.SpiderId, entity.SpiderId, LocateType.Equal));
return(IORMProvider.GetQueryOperator(session).Delete <TSpider>(session, query));
}
public static bool DbInsert(this TSpider entity, DbSession session)
{
var query = IORMProvider.GetDbQueryBuilder(session);
InsertBuilder builder = new InsertBuilder();
builder.ComponentInsert.Add(new ComponentValueOfInsert(TSpiderProperties.SpiderId, entity.SpiderId));
if (entity.SpiderName == null)
{
throw new NotImplementedException("缺少必填的参数项值, 参数项: " + nameof(entity.SpiderName));
}
builder.ComponentInsert.Add(new ComponentValueOfInsert(TSpiderProperties.SpiderName, entity.SpiderName));
query.InsertBuilders.Add(builder);
return(IORMProvider.GetQueryOperator(session).Insert <TSpider>(session, query));
}
public static bool DbUpdate(this TSpider entity, DbSession session, params PDMDbProperty[] fields)
{
var query = IORMProvider.GetDbQueryBuilder(session);
UpdateBuilder builder = new UpdateBuilder();
builder.ComponentWhere.Add(new ComponentValueOfWhere(TSpiderProperties.SpiderId, entity.SpiderId, LocateType.Equal));
if (fields == null || fields.Length == 0)
{
builder.ComponentSet.Add(new ComponentValueOfSet(TSpiderProperties.SpiderId, entity.SpiderId));
builder.ComponentSet.Add(new ComponentValueOfSet(TSpiderProperties.SpiderName, entity.SpiderName));
}
else
{
if (fields.Contains(TSpiderProperties.SpiderName))
{
builder.ComponentSet.Add(new ComponentValueOfSet(TSpiderProperties.SpiderName, entity.SpiderName));
}
}
query.UpdateBuilders.Add(builder);
return(IORMProvider.GetQueryOperator(session).Update <TSpider>(session, query));
}
/// <summary>
/// 存在相应对象时返回true,缺少对象时返回false
/// </summary>
public static bool DbLoad(this TSpider entity, DbSession session, params PDMDbProperty[] fields)
{
var result = entity.DbSelect(session, fields);
if (result == null)
{
return(false);
}
if (fields.Count() == 0)
{
entity.SpiderName = result.SpiderName;
}
else
{
if (fields.Contains(TSpiderProperties.SpiderName))
{
entity.SpiderName = result.SpiderName;
}
}
return(true);
}
/// <summary>
/// 未查询到数据时返回 null
/// </summary>
public static TSpider DbSelect(this TSpider entity, DbSession session, params PDMDbProperty[] fields)
{
var query = IORMProvider.GetDbQueryBuilder(session);
SelectBuilder builder = new SelectBuilder();
if (fields.Count() == 0)
{
builder.ComponentSelect.Add(TSpiderProperties.SpiderId);
builder.ComponentSelect.Add(TSpiderProperties.SpiderName);
}
else
{
builder.ComponentSelect.Add(TSpiderProperties.SpiderId);
foreach (var field in fields)
{
builder.ComponentSelect.Add(field);
}
}
builder.ComponentWhere.Add(new ComponentValueOfWhere(TSpiderProperties.SpiderId, entity.SpiderId, LocateType.Equal));
query.SelectBuilders.Add(builder);
return(IORMProvider.GetQueryOperator(session).Select <TSpider>(session, query));
}
