org.web3j.abi

Class Contract

java.lang.Object

org.web3j.abi.ManagedTransaction

org.web3j.abi.Contract

public abstract class Contract
extends ManagedTransaction

Solidity contract type abstraction for interacting with smart contracts via native Java types.

Field Summary

Fields

Modifier and Type	Field and Description
static java.math.BigInteger	GAS_LIMIT

Fields inherited from class org.web3j.abi.ManagedTransaction

credentials, GAS_PRICE, gasLimit, gasPrice, web3j

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Contract(java.lang.String contractAddress, Web3j web3j, Credentials credentials, java.math.BigInteger gasPrice, java.math.BigInteger gasLimit)

Method Summary

Modifier and Type	Method and Description
protected static <T extends Contract> T	deploy(java.lang.Class<T> type, Web3j web3j, Credentials credentials, java.math.BigInteger gasPrice, java.math.BigInteger gasLimit, java.lang.String binary, java.lang.String encodedConstructor, java.math.BigInteger value)
protected static <T extends Contract> java.util.concurrent.CompletableFuture<T>	deployAsync(java.lang.Class<T> type, Web3j web3j, Credentials credentials, java.math.BigInteger gasPrice, java.math.BigInteger gasLimit, java.lang.String binary, java.lang.String encodedConstructor, java.math.BigInteger value)
protected java.util.List<Type>	executeCallMultipleValueReturn(Function function)
protected java.util.concurrent.Future<java.util.List<Type>>	executeCallMultipleValueReturnAsync(Function function)
protected <T extends Type> T	executeCallSingleValueReturn(Function function)
protected <T extends Type> java.util.concurrent.Future<T>	executeCallSingleValueReturnAsync(Function function)
protected TransactionReceipt	executeTransaction(Function function) Given the duration required to execute a transaction, asyncronous execution is strongly recommended via executeTransactionAsync(org.web3j.abi.datatypes.Function).
protected java.util.concurrent.Future<TransactionReceipt>	executeTransactionAsync(Function function) Execute the provided function as a transaction asynchronously.
protected EventValues	extractEventParameters(Event event, TransactionReceipt transactionReceipt)
java.lang.String	getContractAddress()

Methods inherited from class org.web3j.abi.ManagedTransaction

getAttempts, getGasPrice, getNonce, getSleepDuration, setAttempts, setSleepDuration, signAndSend

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

GAS_LIMIT

public static final java.math.BigInteger GAS_LIMIT

Constructor Detail

Contract

protected Contract(java.lang.String contractAddress,
                   Web3j web3j,
                   Credentials credentials,
                   java.math.BigInteger gasPrice,
                   java.math.BigInteger gasLimit)

Method Detail

getContractAddress

public java.lang.String getContractAddress()

executeCallSingleValueReturnAsync

protected <T extends Type> java.util.concurrent.Future<T> executeCallSingleValueReturnAsync(Function function)

executeCallMultipleValueReturnAsync

protected java.util.concurrent.Future<java.util.List<Type>> executeCallMultipleValueReturnAsync(Function function)

executeCallSingleValueReturn

protected <T extends Type> T executeCallSingleValueReturn(Function function)
                                                   throws java.lang.InterruptedException,
                                                          java.util.concurrent.ExecutionException

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

executeCallMultipleValueReturn

protected java.util.List<Type> executeCallMultipleValueReturn(Function function)
                                                       throws java.lang.InterruptedException,
                                                              java.util.concurrent.ExecutionException

Throws:

java.lang.InterruptedException

java.util.concurrent.ExecutionException

executeTransaction

protected TransactionReceipt executeTransaction(Function function)
                                         throws java.util.concurrent.ExecutionException,
                                                java.lang.InterruptedException,
                                                TransactionTimeoutException

Given the duration required to execute a transaction, asyncronous execution is strongly recommended via executeTransactionAsync(org.web3j.abi.datatypes.Function).

Parameters:

function - to transact with

Returns:

Optional containing our transaction receipt

Throws:

java.util.concurrent.ExecutionException - if the computation threw an exception

java.lang.InterruptedException - if the current thread was interrupted while waiting

TransactionTimeoutException - if the transaction was not mined while waiting

executeTransactionAsync

protected java.util.concurrent.Future<TransactionReceipt> executeTransactionAsync(Function function)

Execute the provided function as a transaction asynchronously.

Parameters:

function - to transact with

Returns:

Future containing executing transaction

extractEventParameters

protected EventValues extractEventParameters(Event event,
                                             TransactionReceipt transactionReceipt)

deploy

protected static <T extends Contract> T deploy(java.lang.Class<T> type,
                                               Web3j web3j,
                                               Credentials credentials,
                                               java.math.BigInteger gasPrice,
                                               java.math.BigInteger gasLimit,
                                               java.lang.String binary,
                                               java.lang.String encodedConstructor,
                                               java.math.BigInteger value)
                                        throws java.lang.Exception

Throws:

java.lang.Exception

deployAsync

protected static <T extends Contract> java.util.concurrent.CompletableFuture<T> deployAsync(java.lang.Class<T> type,
                                                                                            Web3j web3j,
                                                                                            Credentials credentials,
                                                                                            java.math.BigInteger gasPrice,
                                                                                            java.math.BigInteger gasLimit,
                                                                                            java.lang.String binary,
                                                                                            java.lang.String encodedConstructor,
                                                                                            java.math.BigInteger value)