Hi,
I am actually providing the fully qualified classname in the
configuration and I was still getting a ClassNotFoundException. If you
look at the code in SolrResourceLoader they actually explicitly add
the jars in solr-home/lib to the classloader:
static ClassLoader createClassLoader(File f, ClassLoader loader) {
if( loader == null ) {
loader = Thread.currentThread().getContextClassLoader();
}
if (f.canRead() && f.isDirectory()) {
File[] jarFiles = f.listFiles();
URL[] jars = new URL[jarFiles.length];
try {
for (int j = 0; j < jarFiles.length; j++) {
jars[j] = jarFiles[j].toURI().toURL();
log.info("Adding '" + jars[j].toString() + "' to Solr
classloader");
}
return URLClassLoader.newInstance(jars, loader);
} catch (MalformedURLException e) {
SolrException.log(log,"Can't construct solr lib class
loader", e);
}
}
log.info("Reusing parent classloader");
return loader;
}
This seems to be me to be why my class is now found when I include my
utilities jar in solr-home/lib.
Thanks
Brendan
On Jun 18, 2008, at 11:49 PM, Noble Paul നോബിള്
नोब्ळ् wrote:
hi,
DIH does not load class using the SolrResourceLoader. It tries a
Class.forName() with the name you provide if it fails it prepends
"org.apache.solr.handler.dataimport." and retries.
This is true for not just transformers but also for Entityprocessor,
DataSource and Evaluator
The reason for doing so is that we do not use any of the 'solr.'
packages in DIH. All our implementations fall into the default package
and we can directly use them w/o the package name.
So , if you are writing your own implementations use the default
package or provide the fully qualified class name.
--Noble
On Thu, Jun 19, 2008 at 8:09 AM, Jon Baer <[EMAIL PROTECTED]> wrote:
Thanks. Yeah took me a while to figure out I needed to do
something like
transformer="com.mycompany.solr.MyTransformer" on the entity before
it would
work ...
- Jon
On Jun 18, 2008, at 1:51 PM, Brendan Grainger wrote:
Hi,
I set up the new DataimportHandler last night to replace some custom
import code I'd written and so far I'm loving it thank you.
I had one issue you might want to know about it. I have some solr
extensions I've written and packaged in a jar which I place in:
solr-home/lib
as per:
http://wiki.apache.org/solr/SolrPlugins#head-59e2685df65335e82f8936ed55d260842dc7a4dc
This works well for my handlers but a custom Transformer I wrote and
packaged the same way was throwing a ClassNotFoundException. I
tracked it
down to the DocBuilder.loadClass method which was just doing a
Class.forName. Anyway, I fixed it for the moment by probably do
something
stupid and creating a SolrResourceLoader (which I imagine could be
an
instance variable, but at 3am I just wanted to get it working).
Anyway, this
fixes the problem:
@SuppressWarnings("unchecked")
static Class loadClass(String name) throws ClassNotFoundException {
SolrResourceLoader loader = new SolrResourceLoader( null );
return loader.findClass(name);
// return Class.forName(name);
}
Brendan
--
--Noble Paul
