# JsonDurableValueCommandCodec<T> Methods

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsondurablevaluecommandcodec-1/)

## Apply(JournalBufferReader, IDurableValueCommandHandler<T>) {#apply-orleans-journaling-journalbufferreader-orleans-journaling-idurablevaluecom-de319914}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsondurablevaluecommandcodec-1/methods/apply-orleans-journaling-journalbufferreader-orleans-journaling-idurablevaluecom-de319914/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Journaling/Formats/Json/JsonDurableValueCommandCodecs.cs#L30-L39)

```csharp
public void Apply(JournalBufferReader input, IDurableValueCommandHandler<T> consumer)
```

Reads one encoded command and applies it to `consumer`.

### Parameters

- `input` (`JournalBufferReader`)
- `consumer` (`IDurableValueCommandHandler<T>`)

## WriteSet(T, JournalStreamWriter) {#writeset-t-orleans-journaling-journalstreamwriter-30108519}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.journaling/orleans.journaling.json.jsondurablevaluecommandcodec-1/methods/writeset-t-orleans-journaling-journalstreamwriter-30108519/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Journaling/Formats/Json/JsonDurableValueCommandCodecs.cs#L17-L25)

```csharp
public void WriteSet(T value, JournalStreamWriter writer)
```

Writes a set command.

### Parameters

- `value` (`T`)
- `writer` (`JournalStreamWriter`)