public static string SerialiseMetadataQueryExpression(MetadataQueryExpression item)
{
if (item != null)
{
string xml =
@"<c:Criteria>"
+ MetadataSerialiser.SerialiseMetadataFilterExpression(item.Criteria) +
@"</c:Criteria>
<c:Properties>"
+ MetadataSerialiser.SerialiseMetadataPropertiesExpression(item.Properties)
+ @" </c:Properties>";
return(xml);
}
return("");
}
public static void AddFilter(this MetadataQueryExpression query, MetadataFilterExpression filter)
{
if (filter == null)
{
return;
}
if (query.Criteria == null || query.Criteria.Conditions.Count == 0 && query.Criteria.Filters.Count == 0)
{
query.Criteria = filter;
}
else if (query.Criteria.FilterOperator == LogicalOperator.And)
{
query.Criteria.Filters.Add(filter);
}
else
{
query.Criteria = new MetadataFilterExpression {
Filters = { query.Criteria, filter }
}
};
}
}