// private SparqlExpression sparqlExpression;
public SparqlToString(SparqlExpression child) : base(child.AggregateLevel, child.IsStoreUsed)
{
var childConst = child.Const;
if (childConst != null)
{
Const = new OV_string(childConst.Content.ToString());
}
else
{
Operator = result => child.Operator(result).ToString();
TypedOperator = result => new OV_string(child.Operator(result).ToString());
}
}
public SparqlLang(SparqlExpression value) : base(value.AggregateLevel, value.IsStoreUsed)
{
if (value.Const != null)
{
Const = new OV_string(((ILanguageLiteral)value.Const).Lang.Substring(1));
}
else
{
TypedOperator = result => new OV_language(Operator(result));
Operator = result =>
{
var f = value.TypedOperator(result);
return(new OV_string(((ILanguageLiteral)f).Lang.Substring(1)));
};
}
}
public SparqlConcat(List <SparqlExpression> list, NodeGenerator q)
{
//SetExprType(ExpressionTypeEnum.stringOrWithLang);
//foreach (var sb in list)
// sb.SetExprType(ExpressionTypeEnum.stringOrWithLang);
if (list.Count == 0)
{
Const = new OV_string(string.Empty);
AggregateLevel = VariableDependenceGroupLevel.Const;
//TypedOperator = r=>new OV_string(string.Empty);
}
else
{
if (list.All(expression => expression.Const != null))
{
var values = list.Select(expression => expression.Const).ToArray();
if (values.All(o => o is OV_langstring))
{
var commonLang = ((OV_langstring)values[0]).Lang;
if (values.Cast <OV_langstring>().All(ls => ls.Lang.Equals(commonLang)))
{
Const = new OV_langstring(string.Concat(values.Select(o => o.Content)), commonLang);
AggregateLevel = VariableDependenceGroupLevel.Const;
}
}
else if (values.All(o => o is OV_string))
{
Const = new OV_string(string.Concat(values.Select(v => v.Content).Cast <string>()));
}
}
else
{
Operator = result =>
{
var values = list.Select(expression => expression.Const ?? expression.TypedOperator(result)).ToArray();
if (values.All(o => o is OV_langstring))
{
var commonLang = ((OV_langstring)values[0]).Lang;
if (values.Cast <OV_langstring>().All(ls => ls.Lang.Equals(commonLang)))
{
return(string.Concat(values.Select(o => o.Content)));
}
}
else if (values.All(o => o is OV_string))
{
return(string.Concat(values.Select(v => v.Content).Cast <string>()));
}
throw new ArgumentException();
//return q.CreateLiteralNode(string.Concat(values.Select(s => s.Content)));
};
AggregateLevel = SetAggregateLevel(list.Select(v => v.AggregateLevel).ToArray());
TypedOperator = result =>
{
var values = list.Select(expression => expression.Const ?? expression.TypedOperator(result)).ToArray();
if (values.All(o => o is OV_langstring))
{
var commonLang = ((OV_langstring)values[0]).Lang;
if (values.Cast <OV_langstring>().All(ls => ls.Lang.Equals(commonLang)))
{
return(new OV_langstring(string.Concat(values.Select(o => o.Content)), commonLang));
}
}
else if (values.All(o => o is OV_string))
{
return(new OV_string(string.Concat(values.Select(v => v.Content).Cast <string>())));
}
throw new ArgumentException();
//return q.CreateLiteralNode(string.Concat(values.Select(s => s.Content)));
};
}
}
}
