public override SqlProvider FormatCount()
{
var selectSql = "SELECT COUNT(*)";
var fromTableSql = FormatTableName();
var whereParams = ResolveExpression.ResolveWhere(Context.Set.WhereExpression);
var whereSql = whereParams.SqlCmd;
Params = whereParams.Param;
SqlString = $"{selectSql} {fromTableSql} {whereSql} ";
return(this);
}
public override SqlProvider FormatSum <T>(LambdaExpression lambdaExpression)
{
var selectSql = ResolveExpression.ResolveSum(typeof(T).GetProperties(), lambdaExpression);
var fromTableSql = FormatTableName();
var whereParams = ResolveExpression.ResolveWhere(Context.Set.WhereExpression);
var whereSql = whereParams.SqlCmd;
Params = whereParams.Param;
SqlString = $"{selectSql} {fromTableSql} {whereSql} ";
return(this);
}
public override SqlProvider FormatGet <T>()
{
var selectSql = ResolveExpression.ResolveSelect(typeof(T).GetProperties(), Context.Set.SelectExpression);
var fromTableSql = FormatTableName();
var whereParams = ResolveExpression.ResolveWhere(Context.Set.WhereExpression);
var whereSql = whereParams.SqlCmd;
Params = whereParams.Param;
var orderbySql = ResolveExpression.ResolveOrderBy(Context.Set.OrderbyExpressionList);
SqlString = $"{selectSql} {fromTableSql} {whereSql} {orderbySql} LIMIT 1";
return(this);
}
public override SqlProvider FormatExists()
{
var selectSql = "SELECT 1";
var fromTableSql = FormatTableName();
var nolockSql = ResolveExpression.ResolveWithNoLock(SetContext.NoLock);
var whereParams = ResolveExpression.ResolveWhere(SetContext.WhereExpression);
var whereSql = whereParams.SqlCmd;
Params = whereParams.Param;
SqlString = $"{selectSql} {fromTableSql} {nolockSql} {whereSql} LIMIT 1";
return(this);
}
public override SqlProvider FormatToList <T>()
{
var selectSql = ResolveExpression.ResolveSelect(typeof(T).GetProperties(), Context.Set.SelectExpression);
var fromTableSql = FormatTableName();
var whereParams = ResolveExpression.ResolveWhere(Context.Set.WhereExpression);
var whereSql = whereParams.SqlCmd;
Params = whereParams.Param;
var orderbySql = ResolveExpression.ResolveOrderBy(Context.Set.OrderbyExpressionList);
var topNum = DataBaseContext <T>().QuerySet.TopNum;
var limitSql = topNum.HasValue ? " LIMIT " + topNum.Value : "";
SqlString = $"{selectSql} {fromTableSql} {whereSql} {orderbySql} {limitSql}";
return(this);
}
public override SqlProvider FormatToPageList <T>(int pageIndex, int pageSize)
{
var orderbySql = ResolveExpression.ResolveOrderBy(Context.Set.OrderbyExpressionList);
if (string.IsNullOrEmpty(orderbySql))
{
throw new DapperExtensionException("order by takes precedence over pagelist");
}
var selectSql = ResolveExpression.ResolveSelect(typeof(T).GetProperties(), Context.Set.SelectExpression);
var fromTableSql = FormatTableName();
var whereParams = ResolveExpression.ResolveWhere(Context.Set.WhereExpression);
var whereSql = whereParams.SqlCmd;
Params = whereParams.Param;
SqlString = $"SELECT COUNT(1) {fromTableSql} {whereSql};";
SqlString += $"{selectSql} {fromTableSql} {whereSql} {orderbySql} LIMIT {(pageIndex - 1) * pageSize},{pageIndex * pageSize}";
return(this);
}
public override SqlProvider FormatToList <T>()
{
var selectSql = ResolveExpression.ResolveSelect(typeof(T).GetProperties(), SelectExpression);
var fromTableSql = FormatTableName();
var nolockSql = ResolveExpression.ResolveWithNoLock(NoLock);
var whereParams = ResolveExpression.ResolveWhere(WhereExpression);
var whereSql = whereParams.SqlCmd;
Params = whereParams.Param;
var orderbySql = ResolveExpression.ResolveOrderBy(OrderbyExpressionList);
var topNum = TopNum;
var limitSql = topNum.HasValue ? " LIMIT " + topNum.Value : "";
SqlString = $"{selectSql} {fromTableSql} {nolockSql} {whereSql} {orderbySql} {limitSql}";
return(this);
}
