internal ColumnAsChainer(DbColumn column, string alias)
: base(null, alias)
{
if (!CheckNull(Arg(() => column, column)))
{
return;
}
if (chainException != null)
{
return;
}
_columnName = alias;
Build = (buildContext, buildArgs) =>
{
var sql = Text.GenerateSql(20)
.Append(column.Build(buildContext, buildArgs))
.Append(Text._As_)
.Append(Filter.Delimit(Name))
.ToString();
TryThrow(buildContext);
return(sql);
};
}
internal OrderedChainer(DbColumn prev, SortOrder sortOrder)
: base(null)
{
Build = (buildContext, buildArgs) =>
{
return(String.Format("{0} {1}",
prev.Build(buildContext, buildArgs),
sortOrder.ToUpperCase()));
};
}
internal CollateChainer(DbColumn column, string collation)
: base(null)
{
CheckNullAndThrow(Arg(() => collation, collation));
Build = (buildContext, buildArgs) =>
{
return(Text.GenerateSql(50)
.Append(column.Build(buildContext, buildArgs)).S()
.Append(Text.Collate).S()
.Append(collation)
.ToString());
};
}
