Java TypeReference类代码示例

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public Observable<TransferEventResponse> transferEventObservable(DefaultBlockParameter startBlock, DefaultBlockParameter endBlock) {
    final Event event = new Event("Transfer", 
            Arrays.<TypeReference<?>>asList(new TypeReference<Address>() {}, new TypeReference<Address>() {}),
            Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
    EthFilter filter = new EthFilter(startBlock, endBlock, getContractAddress());
    filter.addSingleTopic(EventEncoder.encode(event));
    return web3j.ethLogObservable(filter).map(new Func1<Log, TransferEventResponse>() {
        @Override
        public TransferEventResponse call(Log log) {
            EventValues eventValues = extractEventParameters(event, log);
            TransferEventResponse typedResponse = new TransferEventResponse();
            typedResponse._from = (Address) eventValues.getIndexedValues().get(0);
            typedResponse._to = (Address) eventValues.getIndexedValues().get(1);
            typedResponse._value = (Uint256) eventValues.getNonIndexedValues().get(0);
            return typedResponse;
        }
    });
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
private byte[] callHash(String name, Type...parameters) throws InterruptedException, ExecutionException {

        Function function = new Function(name,
            Arrays.asList(parameters),
            Arrays.asList(new TypeReference<Bytes32>() {})
        );
        String encodedFunction = FunctionEncoder.encode(function);

        TransactionManager transactionManager = cfg.getTransactionManager(cfg.getMainAddress());
        String channelLibraryAddress = contractsProperties.getAddress().get("ChannelLibrary").toString();
        org.web3j.protocol.core.methods.response.EthCall ethCall = web3j.ethCall(
            Transaction.createEthCallTransaction(
                transactionManager.getFromAddress(), channelLibraryAddress, encodedFunction),
            DefaultBlockParameterName.LATEST)
            .sendAsync().get();

        String value = ethCall.getValue();
        List<Type> list = FunctionReturnDecoder.decode(value, function.getOutputParameters());
        return ((Bytes32) list.get(0)).getValue();
    }
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public Observable<ApprovalEventResponse> approvalEventObservable(DefaultBlockParameter startBlock, DefaultBlockParameter endBlock) {
    final Event event = new Event("Approval", 
            Arrays.<TypeReference<?>>asList(new TypeReference<Address>() {}, new TypeReference<Address>() {}),
            Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
    EthFilter filter = new EthFilter(startBlock, endBlock, getContractAddress());
    filter.addSingleTopic(EventEncoder.encode(event));
    return web3j.ethLogObservable(filter).map(new Func1<Log, ApprovalEventResponse>() {
        @Override
        public ApprovalEventResponse call(Log log) {
            EventValues eventValues = extractEventParameters(event, log);
            ApprovalEventResponse typedResponse = new ApprovalEventResponse();
            typedResponse.owner = (Address) eventValues.getIndexedValues().get(0);
            typedResponse.spender = (Address) eventValues.getIndexedValues().get(1);
            typedResponse.value = (Uint256) eventValues.getNonIndexedValues().get(0);
            return typedResponse;
        }
    });
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public Observable<PayoutEventResponse> payoutEventObservable(DefaultBlockParameter startBlock, DefaultBlockParameter endBlock) {
    final Event event = new Event("Payout", 
            Arrays.<TypeReference<?>>asList(),
            Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
    EthFilter filter = new EthFilter(startBlock, endBlock, getContractAddress());
    filter.addSingleTopic(EventEncoder.encode(event));
    return web3j.ethLogObservable(filter).map(new Func1<Log, PayoutEventResponse>() {
        @Override
        public PayoutEventResponse call(Log log) {
            EventValues eventValues = extractEventParameters(event, log);
            PayoutEventResponse typedResponse = new PayoutEventResponse();
            typedResponse.weiPerToken = (Uint256) eventValues.getNonIndexedValues().get(0);
            return typedResponse;
        }
    });
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public Observable<IssuanceEventResponse> issuanceEventObservable(DefaultBlockParameter startBlock, DefaultBlockParameter endBlock) {
    final Event event = new Event("Issuance", 
            Arrays.<TypeReference<?>>asList(new TypeReference<Address>() {}),
            Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
    EthFilter filter = new EthFilter(startBlock, endBlock, getContractAddress());
    filter.addSingleTopic(EventEncoder.encode(event));
    return web3j.ethLogObservable(filter).map(new Func1<Log, IssuanceEventResponse>() {
        @Override
        public IssuanceEventResponse call(Log log) {
            EventValues eventValues = extractEventParameters(event, log);
            IssuanceEventResponse typedResponse = new IssuanceEventResponse();
            typedResponse.to = (Address) eventValues.getIndexedValues().get(0);
            typedResponse.value = (Uint256) eventValues.getNonIndexedValues().get(0);
            return typedResponse;
        }
    });
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public Observable<NewMessageEventResponse> newMessageEventObservable(DefaultBlockParameter startBlock, DefaultBlockParameter endBlock) {
    final Event event = new Event("NewMessage", 
            Arrays.<TypeReference<?>>asList(),
            Arrays.<TypeReference<?>>asList(new TypeReference<Address>() {}, new TypeReference<Utf8String>() {}));
    EthFilter filter = new EthFilter(startBlock, endBlock, getContractAddress());
    filter.addSingleTopic(EventEncoder.encode(event));
    return web3j.ethLogObservable(filter).map(new Func1<Log, NewMessageEventResponse>() {
        @Override
        public NewMessageEventResponse call(Log log) {
            EventValues eventValues = extractEventParameters(event, log);
            NewMessageEventResponse typedResponse = new NewMessageEventResponse();
            typedResponse.from = (Address) eventValues.getNonIndexedValues().get(0);
            typedResponse.message = (Utf8String) eventValues.getNonIndexedValues().get(1);
            return typedResponse;
        }
    });
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public Observable<TransferEventResponse> transferEventObservable(DefaultBlockParameter startBlock, DefaultBlockParameter endBlock) {
    final Event event = new Event("Transfer", 
            Arrays.<TypeReference<?>>asList(new TypeReference<Address>() {}, new TypeReference<Address>() {}),
            Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
    EthFilter filter = new EthFilter(startBlock, endBlock, getContractAddress());
    filter.addSingleTopic(EventEncoder.encode(event));
    return web3j.ethLogObservable(filter).map(new Func1<Log, TransferEventResponse>() {
        @Override
        public TransferEventResponse call(Log log) {
            EventValues eventValues = extractEventParameters(event, log);
            TransferEventResponse typedResponse = new TransferEventResponse();
            typedResponse.from = (Address) eventValues.getIndexedValues().get(0);
            typedResponse.to = (Address) eventValues.getIndexedValues().get(1);
            typedResponse.value = (Uint256) eventValues.getNonIndexedValues().get(0);
            return typedResponse;
        }
    });
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
@OnClick(R.id.pending_event_set)
public void pendingEventSet() {
    final Event event = new Event(
            "Print",
            Collections.emptyList(),
            Collections.singletonList(new TypeReference<Uint256>() {
            }));

    FilterManager.Filter filter = new FilterManager.Filter(event, HELLO_CONTRACT_ADDR);
    FilterManager.pendingFilterLogs(filter)
            .compose(bindToLifecycle())
            .map(log -> Utils.extractEventParameters(event, log))
            .subscribe(eventValues -> {
                Log.i(TAG, "output : " + eventValues.getNonIndexedValues().get(0).getValue());
            }, Throwable::printStackTrace);
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public List<NotifyEventResponse> getNotifyEvents(Receipt transactionReceipt) throws Exception {
    final Event event = new Event(
            "Notify",
            Collections.emptyList(),
            Arrays.asList(
                    new TypeReference<Uint256>() {
                    },
                    new TypeReference<Uint256>() {
                    }
            ));

    List<EventValues> valueList = extractEventParameters(event, transactionReceipt);
    ArrayList<NotifyEventResponse> responses = new ArrayList<>(valueList.size());
    for (EventValues eventValues : valueList) {
        NotifyEventResponse typedResponse = new NotifyEventResponse();
        typedResponse.input = (Uint256) eventValues.getNonIndexedValues().get(0);
        typedResponse.result = (Uint256) eventValues.getNonIndexedValues().get(1);
        responses.add(typedResponse);
    }
    return responses;
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public Observable<NotifyEventResponse> notifyEventObservable() {
    final Event event = new Event(
            "Notify",
            Collections.emptyList(),
            Arrays.asList(
                    new TypeReference<Uint256>() {
                    },
                    new TypeReference<Uint256>() {
                    }
            ));

    return filterLogs(event)
            .map(eventValues -> {
                NotifyEventResponse typedResponse = new NotifyEventResponse();
                typedResponse.input = (Uint256) eventValues.getNonIndexedValues().get(0);
                typedResponse.result = (Uint256) eventValues.getNonIndexedValues().get(1);
                return typedResponse;
            });
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public static byte[] createTokenTransferData(String to, BigInteger tokenAmount) {
    List<Type> params = Arrays.asList(new Address(to), new Uint256(tokenAmount));

    List<TypeReference<?>> returnTypes = Arrays.<TypeReference<?>>asList(new TypeReference<Bool>() {
    });

    Function function = new Function("transfer", params, returnTypes);
    String encodedFunction = FunctionEncoder.encode(function);
    return Numeric.hexStringToByteArray(Numeric.cleanHexPrefix(encodedFunction));
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public Observable<TransferEventResponse> transferEventObservable(DefaultBlockParameter startBlock, DefaultBlockParameter endBlock) {
    final Event event = new Event("Transfer",
            Arrays.<TypeReference<?>>asList(new TypeReference<Address>() {}, new TypeReference<Address>() {}),
            Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
    EthFilter filter = new EthFilter(startBlock, endBlock, getContractAddress());
    filter.addSingleTopic(EventEncoder.encode(event));
    return web3j.ethLogObservable(filter).map(new Func1<Log, TransferEventResponse>() {
        @Override
        public TransferEventResponse call(Log log) {
            EventValues eventValues = extractEventParameters(event, log);
            TransferEventResponse typedResponse = new TransferEventResponse();
            typedResponse._from = (String) eventValues.getIndexedValues().get(0).getValue();
            typedResponse._to = (String) eventValues.getIndexedValues().get(1).getValue();
            typedResponse._value = (BigInteger) eventValues.getNonIndexedValues().get(0).getValue();
            return typedResponse;
        }
    });
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public List<MintedEventResponse> getMintedEvents(TransactionReceipt transactionReceipt) {
    final Event event = new Event("Minted", 
            Arrays.<TypeReference<?>>asList(),
            Arrays.<TypeReference<?>>asList(new TypeReference<Address>() {}, new TypeReference<Uint256>() {}));
    List<EventValues> valueList = extractEventParameters(event, transactionReceipt);
    ArrayList<MintedEventResponse> responses = new ArrayList<MintedEventResponse>(valueList.size());
    for (EventValues eventValues : valueList) {
        MintedEventResponse typedResponse = new MintedEventResponse();
        typedResponse._addr = (Address) eventValues.getNonIndexedValues().get(0);
        typedResponse.tokens = (Uint256) eventValues.getNonIndexedValues().get(1);
        responses.add(typedResponse);
    }
    return responses;
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public List<PayoutEventResponse> getPayoutEvents(TransactionReceipt transactionReceipt) {
    final Event event = new Event("Payout", 
            Arrays.<TypeReference<?>>asList(),
            Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
    List<EventValues> valueList = extractEventParameters(event, transactionReceipt);
    ArrayList<PayoutEventResponse> responses = new ArrayList<PayoutEventResponse>(valueList.size());
    for (EventValues eventValues : valueList) {
        PayoutEventResponse typedResponse = new PayoutEventResponse();
        typedResponse.weiPerToken = (Uint256) eventValues.getNonIndexedValues().get(0);
        responses.add(typedResponse);
    }
    return responses;
}
 

import org.web3j.abi.TypeReference; //导入依赖的package包/类
public List<TransferEventResponse> getTransferEvents(TransactionReceipt transactionReceipt) {
    final Event event = new Event("Transfer", 
            Arrays.<TypeReference<?>>asList(new TypeReference<Address>() {}, new TypeReference<Address>() {}),
            Arrays.<TypeReference<?>>asList(new TypeReference<Uint256>() {}));
    List<EventValues> valueList = extractEventParameters(event, transactionReceipt);
    ArrayList<TransferEventResponse> responses = new ArrayList<TransferEventResponse>(valueList.size());
    for (EventValues eventValues : valueList) {
        TransferEventResponse typedResponse = new TransferEventResponse();
        typedResponse._from = (Address) eventValues.getIndexedValues().get(0);
        typedResponse._to = (Address) eventValues.getIndexedValues().get(1);
        typedResponse._value = (Uint256) eventValues.getNonIndexedValues().get(0);
        responses.add(typedResponse);
    }
    return responses;
}