org.web3j.protocol.core.filters

Class LogsFilter

java.lang.Object

org.web3j.protocol.core.filters.Filter<java.util.List<Log>>

org.web3j.protocol.core.filters.LogsFilter

public class LogsFilter
extends Filter<java.util.List<Log>>

Logs filter handler.

Field Summary

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

callback, schedule, web3j

Constructor Summary

Constructors

Constructor and Description
LogsFilter(Web3j web3j, Callback<java.util.List<Log>> callback, EthFilter ethFilter)

Method Summary

Modifier and Type	Method and Description
protected java.util.Optional<Request<?,EthLog>>	getFilterLogs(java.math.BigInteger filterId) Retrieves historic filters for the filter with the given id.
protected void	process(java.util.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

Constructor Detail

LogsFilter

public LogsFilter(Web3j web3j,
                  Callback<java.util.List<Log>> callback,
                  EthFilter ethFilter)

Method Detail

sendRequest

protected EthFilter sendRequest()
                         throws java.io.IOException

Specified by:

sendRequest in class Filter<java.util.List<Log>>

Throws:

java.io.IOException

process

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

Specified by:

process in class Filter<java.util.List<Log>>

getFilterLogs

protected java.util.Optional<Request<?,EthLog>> getFilterLogs(java.math.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<java.util.List<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