Type Alias: DeltaEvent<TRow, TKey>

type DeltaEvent<TRow, TKey> = 
  | {
  key: TKey;
  metadata?: Record<string, unknown>;
  type: "enter";
  value: TRow;
}
  | {
  key: TKey;
  metadata?: Record<string, unknown>;
  type: "exit";
  value: TRow;
}
  | {
  key: TKey;
  metadata?: Record<string, unknown>;
  previousValue: TRow;
  type: "update";
  value: TRow;
};

type DeltaEvent<TRow, TKey> = 
  | {
  key: TKey;
  metadata?: Record<string, unknown>;
  type: "enter";
  value: TRow;
}
  | {
  key: TKey;
  metadata?: Record<string, unknown>;
  type: "exit";
  value: TRow;
}
  | {
  key: TKey;
  metadata?: Record<string, unknown>;
  previousValue: TRow;
  type: "update";
  value: TRow;
};

Defined in: packages/db/src/query/effect.ts:38

Delta event emitted when a row enters, exits, or updates within a query result

Type Parameters

TRow

TRow extends object = Record<string, unknown>

TKey

TKey extends string | number = string | number

Type Declaration

{
  key: TKey;
  metadata?: Record<string, unknown>;
  type: "enter";
  value: TRow;
}

{
  key: TKey;
  metadata?: Record<string, unknown>;
  type: "enter";
  value: TRow;
}

key

key: TKey;

key: TKey;

metadata?

optional metadata: Record<string, unknown>;

optional metadata: Record<string, unknown>;

type

type: "enter";

type: "enter";

value

value: TRow;

value: TRow;

Current value for the entering row

{
  key: TKey;
  metadata?: Record<string, unknown>;
  type: "exit";
  value: TRow;
}

{
  key: TKey;
  metadata?: Record<string, unknown>;
  type: "exit";
  value: TRow;
}

key

key: TKey;

key: TKey;

metadata?

optional metadata: Record<string, unknown>;

optional metadata: Record<string, unknown>;

type

type: "exit";

type: "exit";

value

value: TRow;

value: TRow;

Current value for the exiting row

{
  key: TKey;
  metadata?: Record<string, unknown>;
  previousValue: TRow;
  type: "update";
  value: TRow;
}

{
  key: TKey;
  metadata?: Record<string, unknown>;
  previousValue: TRow;
  type: "update";
  value: TRow;
}

key

key: TKey;

key: TKey;

metadata?

optional metadata: Record<string, unknown>;

optional metadata: Record<string, unknown>;

previousValue

previousValue: TRow;

previousValue: TRow;

Previous value before the batch

type

type: "update";

type: "update";

value

value: TRow;

value: TRow;

Current value after the update