public Placeholder(MetadataManager metadataContainer, string value, int position)
{
_metadataContainer = metadataContainer;
var mask = (int)ZedActivityPartyParticipationTypeMask.Owner;
if (value.Contains(".from."))
{
value = value.Replace(".from.", ".activityid.activityparty.partyid.");
mask = (int)ZedActivityPartyParticipationTypeMask.Sender;
}
string major;
(major, Format, Default) = value.SplitFieldValue();
var parts = major.Split(new[] { '.' }, StringSplitOptions.RemoveEmptyEntries);
if (parts.Length < 3)
{
throw new Exception($"Invalid template parameter {value}");
}
Position = position;
Variable = parts[0];
EntityName = metadataContainer.DefineEntityName(parts[1]);
var alias = string.Empty;
var root = new QueryPart(metadataContainer.GetQuery(Variable, EntityName));
for (var i = 2; i < parts.Length - 1; i += 2)
{
var currentField = metadataContainer.DefineField(parts[i], root.EntityName);
var entity = metadataContainer.DefineEntityName(parts[i + 1]);
alias += currentField + entity;
var link = root.LinkEntities.FirstOrDefault(item => item.LinkFromAttributeName == currentField &&
item.LinkToEntityName == entity);
if (link == null)
{
ConditionExpression criterion = null;
string entityId;
if (entity == "activityparty")
{
entityId = "activityid";
criterion = new ConditionExpression("participationtypemask", ConditionOperator.Equal, mask);
}
else
{
entityId = _metadataContainer.GetEntityId(entity);
}
link = root.AddLink(entity, currentField, entityId, criterion);
link.EntityAlias = alias;
}
root = new QueryPart(link);
}
var field = metadataContainer.DefineField(parts[parts.Length - 1], root.EntityName);
root.AddColumn(field);
EntityPath = string.IsNullOrWhiteSpace(alias) ? field : $"{alias}.{field}";
}
