public static SqlQueryAttribute BuildAttribute(SqlQuery query, QueryAttributeDef attrDef)
{
if (query == null)
{
throw new ArgumentNullException("query");
}
if (attrDef == null)
{
throw new ArgumentNullException("attrDef");
}
var single = attrDef as QuerySingleAttributeDef;
if (single != null)
{
var source = query.FindSource(single.Attribute.Source);
return(single.Attribute.AttributeId != Guid.Empty
? query.GetAttribute(source, single.Attribute.AttributeId)
: query.GetAttribute(source, single.Attribute.AttributeName));
}
var exp = attrDef as QueryExpAttributeDef;
if (exp != null)
{
var attrRefs = new List <SqlQuerySourceAttributeRef>();
foreach (var attribute in exp.Attributes)
{
var source = query.FindSource(attribute.Source);
var attr = attribute.AttributeId != Guid.Empty
? source.GetAttribute(attribute.AttributeId)
: source.GetAttribute(attribute.AttributeName);
var attrRef = new SqlQuerySourceAttributeRef(source, attr);
attrRefs.Add(attrRef);
}
return(query.AddAttribute(attrRefs, exp.Expression));
}
return(null);
}
public QueryAttributeDefHelper(QueryAttributeDef def)
{
Def = def;
}
