Java Code Examples for org.web3j.abi.TypeReference#create()

The following examples show how to use org.web3j.abi.TypeReference#create() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: EthereumUtils.java    From jbpm-work-items with Apache License 2.0 6 votes vote down vote up 
public static void observeContractEvent(Web3j web3j,
                                        String contractEventName,
                                        String contractAddress,
                                        List<TypeReference<?>> indexedParameters,
                                        List<TypeReference<?>> nonIndexedParameters,
                                        String eventReturnType,
                                        rx.functions.Action1 action1) {

    Event event = new Event(contractEventName,
                            indexedParameters,
                            nonIndexedParameters);

    EthFilter filter = new EthFilter(DefaultBlockParameterName.EARLIEST,
                                     DefaultBlockParameterName.LATEST,
                                     contractAddress);

    filter.addSingleTopic(EventEncoder.encode(event));

    Class<Type> type = (Class<Type>) AbiTypes.getType(eventReturnType);
    TypeReference<Type> typeRef = TypeReference.create(type);

    web3j.ethLogObservable(filter).subscribe(action1);
}
Example 2
Source File: EthereumUtils.java    From jbpm-work-items with Apache License 2.0 5 votes vote down vote up 
public static void observeContractEvent(Web3j web3j,
                                        String contractEventName,
                                        String contractAddress,
                                        List<TypeReference<?>> indexedParameters,
                                        List<TypeReference<?>> nonIndexedParameters,
                                        String eventReturnType,
                                        KieSession kieSession,
                                        String signalName,
                                        boolean doAbortOnUpdate,
                                        WorkItemManager workItemManager,
                                        WorkItem workItem) {

    Event event = new Event(contractEventName,
                            indexedParameters,
                            nonIndexedParameters);

    EthFilter filter = new EthFilter(DefaultBlockParameterName.EARLIEST,
                                     DefaultBlockParameterName.LATEST,
                                     contractAddress);

    filter.addSingleTopic(EventEncoder.encode(event));

    Class<Type> type = (Class<Type>) AbiTypes.getType(eventReturnType);
    TypeReference<Type> typeRef = TypeReference.create(type);

    web3j.ethLogObservable(filter).subscribe(
            eventTrigger -> {
                kieSession.signalEvent(signalName,
                                       FunctionReturnDecoder.decode(
                                               eventTrigger.getData(),
                                               Arrays.asList(typeRef)).get(0).getValue());
                if (doAbortOnUpdate) {
                    workItemManager.completeWorkItem(workItem.getId(),
                                                     null);
                }
            }
    );
}