private static IEnumerable <string> GetParts(ExportSettings.FieldSetting field)
{
var parts = new List <string>();
var dbType = QPContext.DatabaseType;
var ns = SqlQuerySyntaxHelper.DbSchemaName(dbType);
var contentItemIdField = dbType == DatabaseType.Postgres ? "content_item_id::integer" : "content_item_id";
if (field.Related == null || !field.Related.Any())
{
parts.Add($"{SqlQuerySyntaxHelper.CastToString(dbType, field.TableAlias)}.content_item_id");
}
else
{
foreach (var f in field.Related)
{
switch (f.ExactType)
{
case FieldExactTypes.M2MRelation:
parts.Add($"{ns}.qp_link_titles({f.LinkId.Value}, {field.TableAlias}.{contentItemIdField}, {f.RelatedAttributeId}, 255)");
break;
case FieldExactTypes.O2MRelation:
parts.Add($"{SqlQuerySyntaxHelper.CastToString(dbType, $"{f.TableAlias}.{SqlQuerySyntaxHelper.EscapeEntityName(dbType, f.RelatedAttributeName)}")}");
break;
case FieldExactTypes.M2ORelation:
parts.Add($"{ns}.qp_m2o_titles(base.{contentItemIdField}, {f.Id}, {field.RelatedAttributeId}, 255)");
break;
default:
parts.Add(new[]
{
FieldExactTypes.Date,
FieldExactTypes.DateTime,
FieldExactTypes.Time,
FieldExactTypes.Textbox,
FieldExactTypes.VisualEdit,
FieldExactTypes.Numeric,
FieldExactTypes.Classifier
}.Contains(f.ExactType)
? $"coalesce({SqlQuerySyntaxHelper.CastToString(dbType, $"{field.TableAlias}.{SqlQuerySyntaxHelper.EscapeEntityName(dbType, f.Name)}")}, '')"
: $"coalesce( {field.TableAlias}.{SqlQuerySyntaxHelper.EscapeEntityName(dbType, f.Name)}, '')");
break;
}
}
}
return(parts);
}