[jira] [Created] (SOLR-9205) Parse schema in LukeResponse

["Fengtan (JIRA)" <ji...@apache.org>]

Fengtan created SOLR-9205:
-----------------------------

             Summary: Parse schema in LukeResponse
                 Key: SOLR-9205
                 URL: https://issues.apache.org/jira/browse/SOLR-9205
             Project: Solr
          Issue Type: Improvement
          Components: SolrJ
            Reporter: Fengtan
            Priority: Minor


LukeRequestHandler (/admin/luke) lists schema flags using two fields named "schema" and "flags".

For instance on my local machine http://localhost:8983/solr/collection1/admin/luke returns something like this:
{code:xml}
<lst name="id">
  <str name="type">string</str>
  <str name="schema">I-S-----OF-----l</str>
</lst>
{code}
And http://localhost:8983/solr/collection1/admin/luke?show=schema returns something like this:
{code:xml}
<lst name="id">
  <str name="type">string</str>
  <str name="flags">I-S-----OF-----l</str>
</lst>
{code}

However, when processing a LukeRequest in SolrJ, only the "flags" field is parsed into a Set of FieldFlag objects. The "schema" field is left as a String, and as a result is hard to process by client applications who do not know how to parse "I-S-----OF-----l".

Here is an example that illustrates the problem:
{code}
public class MyClass {
  public static void main(String[] args) throws Exception {
    SolrClient client = new HttpSolrClient("http://localhost:8983/solr/collection1");
    LukeRequest request = new LukeRequest();
    LukeResponse response = request.process(client);
    for (LukeResponse.FieldInfo field:response.getFieldInfo().values()) {
      System.out.println(field.getSchema());
      // field.getSchema() returns "I-S-----OF------" (i.e. a String) which is not much meaningful for SolrJ applications
      // Ideally field.getSchema() should return something like "[INDEXED, STORED, OMIT_NORMS, OMIT_TF]" (i.e. a EnumSet<FieldFlag>) which is meaningful for SolrJ applications
    }
  }
}
{code}

It is probably fine to parse both fields the same way in SolrJ since LukeRequestHandler populates them [the same way|https://github.com/apache/lucene-solr/blob/master/solr/core/src/java/org/apache/solr/handler/admin/LukeRequestHandler.java#L288].



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