Hi Michelle,
I think this problem is due to the maven setup.
If you have maven set up your classpath, and declare a dependency on
log4j, then maven will put the log4j.jar file into the classpath.
But in order to have maven also put log4j.properties into the
classpath, you need tell maven to add a dependency on a resources
directory that has the log4j.properties.
For example,
<build>
<resources>
<resource>
<directory>src/main/resources</directory>
</resource>
</resources>
What the above snippet does is to add src/main/resources to the
classpath when building the jar file. Something similar needs to be
done for exectck or tck...
Craig
On Mar 7, 2012, at 6:28 PM, Michelle Caisse wrote:
Which classloader is the one used to load log4j? -- Michelle
On 3/6/2012 7:36 PM, Craig L Russell wrote:
Hi Michelle,
On Mar 6, 2012, at 5:50 PM, Michelle Caisse wrote:
On 3/2/2012 11:25 AM, Craig L Russell wrote:
It looks like log4j looks in the class loader that loads the
log4j classes [1], so putting the configuration file directory in
the class loader used to load log4j should work.
Would it then also be the case that putting the configuration file
in the directory from which the log4j jar file is loaded should
work? I tried this and it did not work.
I looked in Enhance.java and couldn't quite figure out where the
log4j jar file is being added to the class path.
Log4j is handled by maven's dependency management. The same is
currently true for the DataNucleus jars, though I had worked on an
alternative to remove DataNucleus from the classpath when the IUT
was run.
If you're using maven for dependency management, then maven is only
going to add the log4j.jar to the classpath, not the directory in
which log4j.jar is located.
I'd suggest *not* using maven for dependencies for jdori, as it
makes jdori not like iut.
How about creating a directory for the known jdori dependencies
including the log4j.properties and all of DN dependencies and
treating it just like an iut except that it's configured by
exectck. Then as soon as jdori works, we can expect that a properly
set up iut will also work.
I understand that there is then a bit of duplicate work to
configure jdori if you use mvn dependency management for DN, but I
think removing DN and its dependencies from mvn management is
actually a good thing.
Craig
-- Michelle
URL[] classPathURLs = new URL[2];
ArrayList<URL> cpList = new ArrayList<URL>();
ClassLoader loader = null;
try {
cpList.add((new
File(enhancedIdDirName)).toURI().toURL());
cpList.add((new File(fromDirName)).toURI().toURL());
String[] jars = {"jar"};
if (impl.equals("iut")) {
fi = FileUtils.iterateFiles(new
File(iutLibsDirectory), jars, true);
while (fi.hasNext()) {
cpList.add(fi.next().toURI().toURL());
}
}
loader = new
URLClassLoader(cpList.toArray(classPathURLs),
getClass().getClassLoader());
// Utilities.printClasspath(loader);
} catch (MalformedURLException ex) {
Logger.getLogger(Enhance.class.getName()).log(Level.SEVERE, null,
ex);
}
Actually, I can't figure out where DataNucleus and log4j are
being added to the class path of the loader.
Craig
[1] sources from log4j
/**
69
This method will search for <code>resource</code> in different
70
places. The search order is as follows:
71
72
<ol>
73
74
<p><li>Search for <code>resource</code> using the thread context
75
class loader under Java2. If that fails, search for
76
<code>resource</code> using the class loader that loaded this
77
class (<code>Loader</code>). Under JDK 1.1, only the the class
78
loader that loaded this class (<code>Loader</code>) is used.
79
80
<p><li>Try one last time with
81
<code>ClassLoader.getSystemResource(resource)</code>, that is is
82
using the system class loader in JDK 1.2 and virtual machine's
83
built-in class loader in JDK 1.1.
84
85
</ol>
86
*/
87
static public URL getResource(String resource) {
88
ClassLoader classLoader = null;
89
URL url = null;
90
91
try {
92
if(!java1 && !ignoreTCL) {
93
classLoader = getTCL();
94
if(classLoader != null) {
95
LogLog.debug("Trying to find ["+resource+"] using context
classloader "
96
+classLoader+".");
97
url = classLoader.getResource(resource);
98
if(url != null) {
99
return url;
100
}
101
}
102
}
103
104
// We could not find resource. Ler us now try with the
105
// classloader that loaded this class.
106
classLoader = Loader.class.getClassLoader();
107
if(classLoader != null) {
108
LogLog.debug("Trying to find ["+resource+"] using "+classLoader
109
+" class loader.");
110
url = classLoader.getResource(resource);
111
if(url != null) {
112
return url;
113
}
114
}
115
} catch(IllegalAccessException t) {
116
LogLog.warn(TSTR, t);
117
} catch(InvocationTargetException t) {
118
if (t.getTargetException() instanceof InterruptedException
119
|| t.getTargetException() instanceof InterruptedIOException) {
120
Thread.currentThread().interrupt();
121
}
122
LogLog.warn(TSTR, t);
123
} catch(Throwable t) {
124
//
125
// can't be InterruptedException or InterruptedIOException
126
// since not declared, must be error or RuntimeError.
127
LogLog.warn(TSTR, t);
128
}
129
130
// Last ditch attempt: get the resource from the class path. It
131
// may be the case that clazz was loaded by the Extentsion class
132
// loader which the parent of the system class loader. Hence the
133
// code below.
134
LogLog.debug("Trying to find ["+resource+
135
"] using ClassLoader.getSystemResource().");
136
return ClassLoader.getSystemResource(resource);
137
}
138
13
Craig L Russell
Architect, Oracle
http://db.apache.org/jdo
408 276-5638 mailto:craig.russ...@oracle.com
P.S. A good JDO? O, Gasp!
Craig L Russell
Architect, Oracle
http://db.apache.org/jdo
408 276-5638 mailto:craig.russ...@oracle.com
P.S. A good JDO? O, Gasp!
Craig L Russell
Architect, Oracle
http://db.apache.org/jdo
408 276-5638 mailto:craig.russ...@oracle.com
P.S. A good JDO? O, Gasp!
