> ## Documentation Index
> Fetch the complete documentation index at: https://cantonfoundation-generated-references-canton-protobuf-histo.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ContractFilter

> This class contains utilities to decode a CreatedEvent and create an UpdateFormat, a TransactionFormat or a EventFormat by provided parties. It can only be instantiated with a subtype of ContractCompanion

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  <h1 class="x2mdx-ref-title">ContractFilter</h1>

  <p class="x2mdx-ref-summary">This class contains utilities to decode a CreatedEvent and create an UpdateFormat, a TransactionFormat or a EventFormat by provided parties. It can only be instantiated with a subtype of ContractCompanion</p>

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## Signature

```java theme={"theme":{"light":"github-light","dark":"github-dark"}}
public final class ContractFilter<Ct> extends Object
```

## Members

| Member | Lifecycle | Upstream docs |
| - | - | - |
| `eventFormat(Optional<Set<String>>)` | - | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.17/com/daml/ledger/javaapi/data/ContractFilter.html#eventFormat%28java.util.Optional%29) |
| `of(ContractCompanion<Ct, ?, ?>)` | - | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.17/com/daml/ledger/javaapi/data/ContractFilter.html#of%28com.daml.ledger.javaapi.data.codegen.ContractCompanion%29) |
| `of(InterfaceCompanion<?, Cid, View>)` | - | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.17/com/daml/ledger/javaapi/data/ContractFilter.html#of%28com.daml.ledger.javaapi.data.codegen.InterfaceCompanion%29) |
| `toContract(CreatedEvent)` | - | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.17/com/daml/ledger/javaapi/data/ContractFilter.html#toContract%28com.daml.ledger.javaapi.data.CreatedEvent%29) |
| `toContract(CreatedEvent, UnknownTrailingFieldPolicy)` | Added `3.5.1` | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.17/com/daml/ledger/javaapi/data/ContractFilter.html#toContract%28com.daml.ledger.javaapi.data.CreatedEvent,com.daml.ledger.javaapi.data.codegen.UnknownTrailingFieldPolicy%29) |
| `transactionFormat(Optional<Set<String>>)` | - | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.17/com/daml/ledger/javaapi/data/ContractFilter.html#transactionFormat%28java.util.Optional%29) |
| `updateFormat(Optional<Set<String>>)` | - | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.17/com/daml/ledger/javaapi/data/ContractFilter.html#updateFormat%28java.util.Optional%29) |
| `withIncludeCreatedEventBlob(boolean)` | - | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.17/com/daml/ledger/javaapi/data/ContractFilter.html#withIncludeCreatedEventBlob%28boolean%29) |
| `withTransactionShape(TransactionShape)` | - | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.17/com/daml/ledger/javaapi/data/ContractFilter.html#withTransactionShape%28com.daml.ledger.javaapi.data.TransactionShape%29) |
| `withVerbose(boolean)` | - | [Open](https://javadoc.io/doc/com.daml/bindings-java/3.5.17/com/daml/ledger/javaapi/data/ContractFilter.html#withVerbose%28boolean%29) |