DYNDB005: Conflicting entity types

Field	Value
Code	DYNDB005
Severity	Error

Message

Multiple entities in table '{0}' have conflicting sort key patterns

Description

Entities sharing the same table must have distinct sort key patterns for proper discrimination. When multiple entity types share a single DynamoDB table, the source generator uses sort key patterns to distinguish between them. Conflicting patterns make it impossible to determine which entity type a given item belongs to.

Example

The following code triggers this diagnostic:

[DynamoDbTable("SharedTable", IsDefault = true)]
public partial class Order
{
    [PartitionKey]
    [DynamoDbAttribute("pk")]
    public string Pk { get; set; } = string.Empty;

    [SortKey(Prefix = "META")]
    [DynamoDbAttribute("sk")]
    public string Sk { get; set; } = string.Empty;
}

[DynamoDbTable("SharedTable")]
public partial class Invoice
{
    [PartitionKey]
    [DynamoDbAttribute("pk")]
    public string Pk { get; set; } = string.Empty;

    [SortKey(Prefix = "META")]
    [DynamoDbAttribute("sk")]
    public string Sk { get; set; } = string.Empty;
}

Fix

The corrected version:

[DynamoDbTable("SharedTable", IsDefault = true)]
public partial class Order
{
    [PartitionKey]
    [DynamoDbAttribute("pk")]
    public string Pk { get; set; } = string.Empty;

    [SortKey(Prefix = "ORDER")]
    [DynamoDbAttribute("sk")]
    public string Sk { get; set; } = string.Empty;
}

[DynamoDbTable("SharedTable")]
public partial class Invoice
{
    [PartitionKey]
    [DynamoDbAttribute("pk")]
    public string Pk { get; set; } = string.Empty;

    [SortKey(Prefix = "INVOICE")]
    [DynamoDbAttribute("sk")]
    public string Sk { get; set; } = string.Empty;
}