https://issues.apache.org/jira/browse/SOLR-1569

On Nov 17, 2009, at 7:08 AM, Grant Ingersoll wrote:

> Any idea on how to pass string constants to a function?
> 
> When I do I get:
> java.lang.RuntimeException: Exception during query
>        at 
> org.apache.solr.util.AbstractSolrTestCase.assertQ(AbstractSolrTestCase.java:218)
>        at 
> org.apache.solr.util.AbstractSolrTestCase.assertQ(AbstractSolrTestCase.java:201)
>        at 
> org.apache.solr.search.function.distance.DistanceFunctionTest.testHaversine(DistanceFunctionTest.java:55)
> Caused by: org.apache.solr.common.SolrException: undefined field tv8nj9qj92me
>        at org.apache.solr.schema.IndexSchema.getField(IndexSchema.java:1077)
>        at 
> org.apache.solr.search.FunctionQParser.parseValueSource(FunctionQParser.java:249)
>        at 
> org.apache.solr.search.FunctionQParser.parseValueSource(FunctionQParser.java:173)
>        at 
> org.apache.solr.search.ValueSourceParser$20.parse(ValueSourceParser.java:341)
>        at 
> org.apache.solr.search.FunctionQParser.parseValueSource(FunctionQParser.java:245)
>        at 
> org.apache.solr.search.FunctionQParser.parseValueSource(FunctionQParser.java:173)
>        at 
> org.apache.solr.search.FunctionQParser.parse(FunctionQParser.java:40)
>        at org.apache.solr.search.QParser.getQuery(QParser.java:131)
>        at 
> org.apache.solr.handler.component.QueryComponent.prepare(QueryComponent.java:89)
>        at 
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:174)
>        at 
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131)
> 
> FWIW, tv8nj9qj92me is a geohash.
> 
> The code in question is:
> protected ValueSource parseValueSource(boolean doConsumeDelimiter) throws 
> ParseException {
>    ValueSource valueSource;
> 
>    int ch = sp.peek();
>    if (ch>='0' && ch<='9'  || ch=='.' || ch=='+' || ch=='-') {
>      valueSource = new ConstValueSource(sp.getFloat());
>    }
>    else {
>      String id = sp.getId();
>      if (sp.opt("(")) {
>        // a function... look it up.
>        ValueSourceParser argParser = req.getCore().getValueSourceParser(id);
>        if (argParser==null) {
>          throw new ParseException("Unknown function " + id + " in 
> FunctionQuery(" + sp + ")");
>        }
>        valueSource = argParser.parse(this);
>        sp.expect(")");
>      }
>      else {
>        SchemaField f = req.getSchema().getField(id);     //  
> <<<<<<<<<<<<<<<<<<<   Exception here.
>        valueSource = f.getType().getValueSource(f, this);
>      }
>    }
> 
>    if (doConsumeDelimiter)
>      consumeArgumentDelimiter();
> 
>    return valueSource;
>  }
> 
> 
> Seems like we could change this to allow the id to be a constant and pass it 
> along if it isn't a field and wrap it in a literal (new function) or 
> constant.  Thoughts?
> 
> -Grant
> 

--------------------------
Grant Ingersoll
http://www.lucidimagination.com/

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