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From: Greg Thomas <greg.d.thomas@gmail.com>
Date: Mon, 20 Jun 2016 15:01:40 +0100
Message-ID: <CA+GjePUjYQ=G62oR925yCi1c0kST5g0JzEjQJ6PpU2+z8Car6g@mail.gmail.com>
Subject: Re: How exactly are you supposed to use CloseableThreadContext?
To: Log4J Users List <log4j-user@logging.apache.org>
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archived-at: Mon, 20 Jun 2016 14:01:45 -0000

Ah, yes. It seems the javadocs are wrong :( They pre-date the
introduction of the helper class

A better (i.e. working!) example is at
https://logging.apache.org/log4j/2.x/manual/thread-context.html

@Test
public void name() throws Exception {

  try (final CloseableThreadContext.Instance ctc =
CloseableThreadContext.put("key", "value")) {

  }
}

On 20 June 2016 at 14:57, Matt Sicker <boards@gmail.com> wrote:
> I tried doing it like in the javadocs and get a compilation error:
>
> @Test
> public void name() throws Exception {
> try (CloseableThreadContext.put("key", "value")) {
> }
> }
>
> List of errors:
>
> RequestIdFilterTest.java:12: error: <identifier> expected
>                 try (CloseableThreadContext.put("key", "value")) {
>                                                ^
> RequestIdFilterTest.java:12: error: ')' expected
>                 try (CloseableThreadContext.put("key", "value")) {
>                                                 ^
> RequestIdFilterTest.java:12: error: '{' expected
>                 try (CloseableThreadContext.put("key", "value")) {
>                                                      ^
> RequestIdFilterTest.java:12: error: not a statement
>                 try (CloseableThreadContext.put("key", "value")) {
>                                                        ^
> RequestIdFilterTest.java:12: error: ';' expected
>                 try (CloseableThreadContext.put("key", "value")) {
>                                                               ^
> RequestIdFilterTest.java:17: error: reached end of file while parsing
> }
>  ^
>
> Am I doing something wrong here?
>
> --
> Matt Sicker <boards@gmail.com>

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