> ## Documentation Index
> Fetch the complete documentation index at: https://cantonfoundation-update-ref-tables.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# EventQueryServiceGrpc.EventQueryServiceImplBase

> Base class for the server implementation of the service EventQueryService. Query events by contract id. Note that querying by contract key is not (yet) supported, as contract keys are not supported (yet) in multi-synchronizer scenarios.

## EventQueryServiceGrpc.EventQueryServiceImplBase

Upstream docs: [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/EventQueryServiceGrpc.EventQueryServiceImplBase.html)

**Signature**

```text theme={"theme":{"light":"github-light","dark":"github-dark"}}
public abstract static class EventQueryServiceGrpc.EventQueryServiceImplBase extends Object implements io.grpc.BindableService, EventQueryServiceGrpc.AsyncService
```

**Members**

| Docs                                                                                                                                                      | Member                        | Introduced | Deprecated | Removed |
| --------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------- | ---------- | ---------- | ------- |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/EventQueryServiceGrpc.EventQueryServiceImplBase.html#%3Cinit%3E%28%29)  | `EventQueryServiceImplBase()` | `3.5.6`    | -          | -       |
| [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.6/com/daml/ledger/api/v2/EventQueryServiceGrpc.EventQueryServiceImplBase.html#bindService%28%29) | `bindService()`               | `3.5.6`    | -          | -       |