DYNDB033: Circular key dependency

Field	Value
Code	DYNDB033
Severity	Error

Message

Circular dependency detected between computed properties: {0}

Description

Computed properties cannot have circular dependencies on each other. The source generator resolves computed property values in dependency order, and circular references make this resolution impossible.

Example

The following code triggers this diagnostic:

[DynamoDbTable("Items")]
public partial class Item
{
    [PartitionKey]
    [DynamoDbAttribute("pk")]
    [Computed("Category", Separator = "#")]
    public string Pk { get; set; } = string.Empty;

    [SortKey]
    [DynamoDbAttribute("sk")]
    [Computed("Pk", Separator = "#")]
    public string Sk { get; set; } = string.Empty;

    [Extracted("Sk", 0)]
    public string Category { get; set; } = string.Empty;
}

Fix

The corrected version:

[DynamoDbTable("Items")]
public partial class Item
{
    [PartitionKey]
    [DynamoDbAttribute("pk")]
    [Computed("Category", Separator = "#")]
    public string Pk { get; set; } = string.Empty;

    [SortKey]
    [DynamoDbAttribute("sk")]
    [Computed("SubCategory", Separator = "#")]
    public string Sk { get; set; } = string.Empty;

    [Extracted("Pk", 0)]
    public string Category { get; set; } = string.Empty;

    [Extracted("Sk", 0)]
    public string SubCategory { get; set; } = string.Empty;
}