public override SqlObject VisitOffset_count([NotNull] sqlParser.Offset_countContext context)
{
Contract.Requires(context != null);
SqlOffsetSpec sqlOffsetSpec;
if (context.NUMERIC_LITERAL() != null)
{
sqlOffsetSpec = SqlOffsetSpec.Create(
SqlNumberLiteral.Create(
CstToAstVisitor.GetNumber64ValueFromNode(
context.NUMERIC_LITERAL())));
}
else if (context.PARAMETER() != null)
{
sqlOffsetSpec = SqlOffsetSpec.Create(
SqlParameter.Create(
context.PARAMETER().GetText()));
}
else
{
throw new NotImplementedException();
}
return(sqlOffsetSpec);
}
public QueryUnderConstruction AddOffsetSpec(SqlOffsetSpec offsetSpec, TranslationContext context)
{
QueryUnderConstruction result = context.PackageCurrentQueryIfNeccessary();
if (result.offsetSpec != null)
{
// Skip(A).Skip(B) => Skip(A + B)
result.offsetSpec = SqlOffsetSpec.Create(result.offsetSpec.Offset + offsetSpec.Offset);
}
else
{
result.offsetSpec = offsetSpec;
}
return(result);
}
public override SqlObject VisitOffset_limit_clause([NotNull] sqlParser.Offset_limit_clauseContext context)
{
Contract.Requires(context != null);
SqlOffsetSpec sqlOffsetSpec = SqlOffsetSpec.Create(
SqlNumberLiteral.Create(
CstToAstVisitor.GetNumber64ValueFromNode(
context.offset_count().NUMERIC_LITERAL())));
SqlLimitSpec sqlLimitSpec = SqlLimitSpec.Create(
SqlNumberLiteral.Create(
CstToAstVisitor.GetNumber64ValueFromNode(
context.limit_count().NUMERIC_LITERAL())));
return(SqlOffsetLimitClause.Create(sqlOffsetSpec, sqlLimitSpec));
}
public QueryUnderConstruction AddOffsetSpec(SqlOffsetSpec offsetSpec, TranslationContext context)
{
QueryUnderConstruction result = context.PackageCurrentQueryIfNeccessary();
if (result.offsetSpec != null)
{
// Skip(A).Skip(B) => Skip(A + B)
long offsetA = QueryUnderConstruction.GetOffsetCount(result.offsetSpec);
long offsetB = QueryUnderConstruction.GetOffsetCount(offsetSpec);
result.offsetSpec = SqlOffsetSpec.Create(SqlNumberLiteral.Create(offsetA + offsetB));
}
else
{
result.offsetSpec = offsetSpec;
}
return(result);
}
public override SqlObject Visit(SqlOffsetSpec sqlObject)
{
return(SqlOffsetSpec.Create(SqlNumberLiteral.Create(0)));
}
