/// <summary>
/// Builds the resource expression.
/// </summary>
/// <param name="resourceExpression">The resource expression.</param>
/// <returns>ResourceExpression.</returns>
/// <param name="context"></param>
private static ResourceExpression BuildResourceExpression(Model.ResourceExpression resourceExpression, FromEntityContext context)
{
//resourceExpression entity node's followRelationship must not be null
RelationshipReportNode relationshipReportNode =
resourceExpression.SourceNode.As <RelationshipReportNode>();
if (relationshipReportNode != null)
{
if (relationshipReportNode.FollowRelationship == null)
{
EventLog.Application.WriteWarning(context.DebugInfo + "relationshipReportNode.FollowRelationship was null");
return(null);
}
}
//resourceExpression sourceNode is null means that the source entity is removed
if (resourceExpression.SourceNode == null)
{
EventLog.Application.WriteWarning(context.DebugInfo + "resourceExpression.SourceNode was null");
return(null);
}
long targetTypeId = 0;
TypedArgument ta = resourceExpression.ReportExpressionResultType.As <TypedArgument>();
if (ta != null && ta.ConformsToType != null)
{
targetTypeId = ta.ConformsToType.Id;
}
DatabaseType castType = null;
if (ta != null && ta.Name != null)
{
if (ta.Name == "ChoiceRelationship")
{
castType = new ChoiceRelationshipType();
}
else
{
castType = new InlineRelationshipType();
}
}
return(new ResourceExpression {
FieldId = new EntityRef("core:name"), SourceNodeEntityId = resourceExpression.SourceNode.Id, TargetTypeId = targetTypeId, CastType = castType
});
}
/// <summary>
/// To check column is valid,
/// if field or relationship is removed from object.
/// </summary>
/// <param name="expression">report column expression</param>
/// <remarks>
/// the report column expression must be exists, when field is removed from node object,
/// the column expression will be deleted, on this case, it is not valid column
/// the the column expression is resourceexpression, check the relationship exists or not
/// if the relationship is removed, the followRelationship property will be null, current
/// column is invalid column
/// </remarks>
/// <returns></returns>
internal static bool IsValidExpression(ReportExpression expression)
{
if (expression == null)
{
return(false);
}
bool isValid = true;
//resourceExpression reportnode's followRelationship must not be null
Model.ResourceExpression resourceExpression = expression.As <Model.ResourceExpression>();
if (resourceExpression != null)
{
RelationshipReportNode relationshipReportNode =
resourceExpression.SourceNode.As <RelationshipReportNode>();
if (relationshipReportNode != null)
{
if (relationshipReportNode.FollowRelationship == null)
{
isValid = false;
}
}
}
//if aggregated grouped expression is resourceExpression reportnode's followRelationship must not be null
Model.AggregateExpression aggregateExpression = expression.As <Model.AggregateExpression>();
if (aggregateExpression != null)
{
if (!IsValidExpression(aggregateExpression.AggregatedExpression))
{
isValid = false;
}
}
return(isValid);
}
