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https://issues.apache.org/jira/browse/LOG4J2-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14973515#comment-14973515
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Remko Popma commented on LOG4J2-1178:
-------------------------------------
I thought this use case was why we introduced the log4j-io module. Why does
that module not solve the problem?
> Support use-case for JDBC's DataSource.setLogWriter(PrintStream)
> ----------------------------------------------------------------
>
> Key: LOG4J2-1178
> URL: https://issues.apache.org/jira/browse/LOG4J2-1178
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Environment: Apache Maven 3.3.3
> (7994120775791599e205a5524ec3e0dfe41d4a06; 2015-04-22T04:57:37-07:00)
> Maven home: C:\Java\apache-maven-3.3.3\bin\..
> Java version: 1.7.0_79, vendor: Oracle Corporation
> Java home: C:\Program Files\Java\jdk1.7.0_79\jre
> Default locale: en_US, platform encoding: Cp1252
> OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows"
> Reporter: Gary Gregory
>
> I am writing a JDBC driver. The JDBC Spec has a a method
> [DataSource.setLogWriter(PrintStream)|https://docs.oracle.com/javase/8/docs/api/javax/sql/CommonDataSource.html#setLogWriter-java.io.PrintWriter-]
> API drivers should implement.
> Users can drop our driver into any tool that talks JDBC or write their own
> apps. In am concerned about the 'drop the driver anywhere' scenario, like in
> an Eclipse based tool; that may or may not use Eclipse DTP. Or anything else.
> The
> [setLogWriter()|https://docs.oracle.com/javase/8/docs/api/javax/sql/CommonDataSource.html#setLogWriter-java.io.PrintWriter-]
> API can be called at any time, after Log4j has initialized itself for
> example.
> I do all my driver logging through Log4j. If a tool calls
> [setLogWriter()|https://docs.oracle.com/javase/8/docs/api/javax/sql/CommonDataSource.html#setLogWriter-java.io.PrintWriter-],
> I'd like the given PrintStream to become an Appender such that Log4j output
> appears there.
> The only way I see to do that is through pseudo-code like
> "getLoggerContext().getConfiguration().addAppender(PrintStreamAppender.createPrintStreamAppender(aPrintStream))"
> I think that would need to be followed by a full reconfigure.
> Can we use our new builder API to add to the current config and reconfigure?
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