Package org.web3j.protocol.core.filters

Class LogFilter

java.lang.Object

org.web3j.protocol.core.filters.Filter<Log>

org.web3j.protocol.core.filters.LogFilter

public class LogFilter
extends Filter<Log>

Log filter handler.

Field Summary

Fields

Modifier and Type	Field	Description
protected final EthFilter	ethFilter

Fields inherited from class org.web3j.protocol.core.filters.Filter

callback, schedule, web3j

Constructor Summary

Constructors

Constructor	Description
LogFilter(Web3j web3j, Callback<Log> callback, EthFilter ethFilter)

Method Summary

Modifier and Type	Method	Description
protected Optional<Request<?,EthLog>>	getFilterLogs(BigInteger filterId)	Retrieves historic filters for the filter with the given id.
protected void	process(List<EthLog.LogResult> logResults)
protected EthFilter	sendRequest()

Methods inherited from class org.web3j.protocol.core.filters.Filter

cancel, run, uninstallFilter

Methods inherited from class java.lang.Object

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

Field Details

ethFilter

protected final EthFilter ethFilter

Constructor Details

LogFilter

public LogFilter(Web3j web3j,
 Callback<Log> callback,
 EthFilter ethFilter)

Method Details

sendRequest

protected EthFilter sendRequest()
                         throws IOException

Specified by:

sendRequest in class Filter<Log>

Throws:

IOException

process

protected void process(List<EthLog.LogResult> logResults)

Specified by:

process in class Filter<Log>

getFilterLogs

protected Optional<Request<?,EthLog>> getFilterLogs(BigInteger filterId)

Description copied from class: Filter

Retrieves historic filters for the filter with the given id. Getting historic logs is not supported by all filters. If not the method should return an empty EthLog object

Specified by:

getFilterLogs in class Filter<Log>

Parameters:

filterId - Id of the filter for which the historic log should be retrieved

Returns:

Historic logs, or an empty optional if the filter cannot retrieve historic logs