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Replace "JCL" with "Commons Logging".

Reformat sligthly because "Commons Logging" is wider than "JCL".

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/logging/trunk@569145 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Dennis Lundberg
2007-08-23 20:56:51 +00:00
parent b8942956c0
commit 8b1aa6bc00

View File

@@ -26,8 +26,8 @@ $Id$
INTRODUCTION:
============
This release of Apache Commons Logging (JCL) is a maintenance release, with
just a couple of fixes for using JCL under restrictive security policies.
This release of Apache Commons Logging is a maintenance release, with just a
couple of fixes for using Commons Logging under restrictive security policies.
All core classes were compiled with Maven using a 1.4.x JDK, with target set
to 1.1 and source set to 1.2. Commons Logging may work on some
@@ -57,15 +57,15 @@ None.
The protected method LogFactory.getContextClassLoader has been reverted to pre-1.1
behaviour. In earlier releases, this method did not use an AccessController when
obtaining the context classloader. In version 1.1 it did. In this release, it has
reverted to not using an AccessController; any user-level code that needs to obtain a
context classloader should itself create an AccessController, and call the
reverted to not using an AccessController; any user-level code that needs to obtain
a context classloader should itself create an AccessController, and call the
LogFactory.getContextClassLoader method via the doPrivileged method. This fixes a
potential security issue, where untrusted code could get access to the context
classloader if a signed JCL library was in the classpath.
classloader if a signed Commons Logging library was in the classpath.
== Dependencies ==
Commons-logging has no mandatory dependencies.
Commons Logging has no mandatory dependencies.
Java 1.2 and later are supported. It may be possible to use this release with
java 1.1 but this has not been tested; the unit tests certainly don't run on
@@ -79,8 +79,8 @@ base implementation and adapters to a number of popular logging libraries.
File commons-logging-adapters-nn.jar includes only the adapters to various
concrete logging libraries. When commons-logging-nn.jar or
commons-logging-api-nn.jar is deployed in a container classpath, then this
adapters-only jar file should be deployed in the webapp, not the complete JCL
distribution. This ensures that the core Log/LogFactory classes are only
adapters-only jar file should be deployed in the webapp, not the complete Commons
Logging distribution. This ensures that the core Log/LogFactory classes are only
deployed via one classloader, thus avoiding "Log4JLogger does not implement Log"
and similar problems.
@@ -92,17 +92,17 @@ The file commons-logging-api-nn.jar may be used as a declared dependency for
projects that care about "transitive dependencies" and can't handle jar files
such as commons-logging-nn.jar which have "optional" dependencies depending on
how they are used. In addition, this jar file can be useful for "rebundlers" of
JCL who recompile the source-code but who may not be able to recompile against
the full set of supported adapters; such projects should be able to at least
recreate an equivalent of this jar file.
Commons Logging who recompile the source-code but who may not be able to
recompile against the full set of supported adapters; such projects should be
able to at least recreate an equivalent of this jar file.
== General Notes ==
The Apache Commons project has migrated to the Subversion version control system
(previously, CVS was used). There should be no effect on users of the JCL
library, but obviously the process of examining the latest source code, and of
creating patches for JCL has now changed. Please see the Apache Commons
website for details (http://commons.apache.org/).
(previously, CVS was used). There should be no effect on users of the Commons
Logging library, but obviously the process of examining the latest source code,
and of creating patches for Commons Logging has now changed. Please see the
Apache Commons website for details (http://commons.apache.org/).
The Apache Commons project has now moved to using the Apache JIRA installation
as its bugtracking system (formerly, the Apache Bugzilla installation was used).
@@ -118,16 +118,17 @@ Logging with Maven 1.x will be removed in a future version of Commons Logging.
== Bugs Fixed ==
* LOGGING-106: JCL 1.1 was completely unusable under a security policy that prevented
access to system properties. Even signing/authorising the JCL library was not
sufficient. This has been fixed by (a) catching SecurityException and falling back
to a sensible default, and (b) using AccessController so JCL can be granted
privileges without needing the caller to have them too.
* LOGGING-106: Commons Logging 1.1 was completely unusable under a security
policy that prevented access to system properties. Even signing/authorising
the Commons Logging library was not sufficient. This has been fixed by (a)
catching SecurityException and falling back to a sensible default, and (b)
using AccessController so Commons Logging can be granted privileges without
needing the caller to have them too.
* LOGGING-107: JCL 1.1 auto-discovery failed under a security policy that prevented
calls to ClassLoader.getParent. Signing/authorising the JCL library was not
sufficient as an AccessController was not used. This has been fixed by catching
SecurityException and using an AccessController.
* LOGGING-107: Commons Logging 1.1 auto-discovery failed under a security
policy that prevented calls to ClassLoader.getParent. Signing/authorising the
Commons Logging library was not sufficient as an AccessController was not used.
This has been fixed by catching SecurityException and using an AccessController.
* LOGGING-111: Show the contents of chained exceptions, to make debugging easier,
in particular when using Commons Logging together with Log4J.
@@ -135,19 +136,20 @@ Logging with Maven 1.x will be removed in a future version of Commons Logging.
* LOGGING-113: pom.xml in maven repository does not list dependencies as optional.
* MEV-392 (http://jira.codehaus.org/browse/MEV-392)
As JCL didn't provide a Maven2 pom.xml file, one was helpfully created by people
not involved with the commons-logging project and published to the standard maven
repositories. Unfortunately this pom declared normal dependencies on all the logging
libraries that are supported by the core JCL distribution, meaning they all get pulled
into a project that declares a dependency on JCL1.1. This release now provides an
As Commons Logging didn't provide a Maven2 pom.xml file, one was helpfully
created by people not involved with the commons-logging project and published
to the standard maven repositories. Unfortunately this pom declared normal
dependencies on all the logging libraries that are supported by the core
Commons Logging distribution, meaning they all get pulled into a project that
declares a dependency on Commons Logging 1.1. This release now provides an
"official" pom.xml which declares these dependencies as optional so they aren't
automatically included in projects that depend on JCL 1.1.1.
automatically included in projects that depend on Commons Logging 1.1.1.
* (no bug#): Fix thread-safety bug (SimpleDateFormat.format is not thread-safe).
Thanks to Martin Wilson of bright-interactive for the bug report.
* (no bug#): Security issue regarding access to context classloader (see incompatibilities
section above).
* (no bug#): Security issue regarding access to context classloader (see
incompatibilities section above).
DEPRECATIONS:
============