public bool Equals(QueryTakeParameterSpecification other)
{
if (ReferenceEquals(null, other))
{
return false;
}
if (ReferenceEquals(this, other))
{
return true;
}
return Equals(other.limitParametersNameForThisQuery, limitParametersNameForThisQuery);
}
public bool Equals(QueryTakeParameterSpecification other)
{
if (ReferenceEquals(null, other))
{
return(false);
}
if (ReferenceEquals(this, other))
{
return(true);
}
return(Equals(other.limitParametersNameForThisQuery, limitParametersNameForThisQuery));
}
protected SqlString AddLimitsParametersIfNeeded(SqlString sqlString, ICollection<IParameterSpecification> parameterSpecs, QueryParameters queryParameters, ISessionImplementor session)
{
var sessionFactory = session.Factory;
Dialect.Dialect dialect = sessionFactory.Dialect;
RowSelection selection = queryParameters.RowSelection;
bool useLimit = UseLimit(selection, dialect);
if (useLimit)
{
bool hasFirstRow = GetFirstRow(selection) > 0;
bool useOffset = hasFirstRow && dialect.SupportsLimitOffset;
int max = GetMaxOrLimit(dialect, selection);
int? skip = useOffset ? (int?)dialect.GetOffsetValue(GetFirstRow(selection)) : null;
int? take = max != int.MaxValue ? (int?)max : null;
Parameter skipSqlParameter = null;
Parameter takeSqlParameter = null;
if (skip.HasValue)
{
var skipParameter = new QuerySkipParameterSpecification();
skipSqlParameter = Parameter.Placeholder;
skipSqlParameter.BackTrack = EnumerableExtensions.First(skipParameter.GetIdsForBackTrack(sessionFactory));
parameterSpecs.Add(skipParameter);
}
if (take.HasValue)
{
var takeParameter = new QueryTakeParameterSpecification();
takeSqlParameter = Parameter.Placeholder;
takeSqlParameter.BackTrack = EnumerableExtensions.First(takeParameter.GetIdsForBackTrack(sessionFactory));
parameterSpecs.Add(takeParameter);
}
// The dialect can move the given parameters where he need, what it can't do is generates new parameters loosing the BackTrack.
return dialect.GetLimitString(sqlString, skip, take, skipSqlParameter, takeSqlParameter);
}
return sqlString;
}
