CCK Multilanguage values

... by looking at the schema.xml all dynamic fields (which are used for the cck support) use the "text" solr field type which is for English only.

That's not true. In your schema.xml you should find a dynamic field called ts_el_* for greek using text_el.
But I recognized that we missed to create the language specific equivalent for multiple values: tm_LANGUAGE_*.

Please try the attached patch. And don't forget to configure your search fields to use the language specific dynamic fields after you indexed some content.

Just to be sure:
You see ts_cck_field_reservations at admin/settings/apachesolr/query-fields but not ts_el_cck_field_reservations, right?

ss means "string single". Strings are not handled in a language specific way like the type text. They're stored as they are. So this is correct.

The problem seems to be during indexing in these lines of code in apachesolr_multilingual.module:

      $solr = apachesolr_get_solr();
      $fields = $solr->getFields();
      foreach ($fields as $field_name => $field) {
        if (strpos($field_name, 'ts_') === 0 && isset($document->{$field_name}) && !empty($document->{$field_name})) {
          // deal with fields like cck using dynamic ts_* fields

          // search for existing language identifier at second position
          $tmp = explode('_', $field_name);
          if ($language != $tmp[1]) {
            $document->{'ts_' . $language . drupal_substr($field_name, 2)} = $document->{$field_name};
          }
        }
      }

It would be interesting to see the values of $language when $field_name is 'ts_cck_field_reservations'. Are you able to debug this?

In my setup $solr->getFields() returns the fields in the index.

But as I'm thinking of it, it seems to be a race condition. If your index is empty, getFields() returns an empty result. If you re-index twice without deleting the index, it should work.

Could please verify that?

Please test this patch in combination with the patch from #1.

OK, we have to figure it out step by step.

I think we already solved two small issues:
1. tm_LANGUAGE_* has not been indexed in general
2. a race condition when indexing the first nodes

I already committed both patches to git branch 6.x-2.x. I suggest you directly work with this git branch instead of patching your code.

Now we to figure out why your ts_* fields are not getting copied to ts_LANGUAGE_*.

Are you sure that even with the latest code from git $fields (see #6) is still empty?

BTW which version of apachesolr modul did you install?