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From arina-ielchiieva <...@git.apache.org>
Subject [GitHub] drill pull request #574: DRILL-4726: Dynamic UDFs support
Date Tue, 13 Sep 2016 09:33:23 GMT
Github user arina-ielchiieva commented on a diff in the pull request:

    https://github.com/apache/drill/pull/574#discussion_r78525988
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/DrillSqlWorker.java
---
    @@ -69,29 +72,43 @@ public static PhysicalPlan getPlan(QueryContext context, String sql,
Pointer<Str
         final SqlHandlerConfig config = new SqlHandlerConfig(context, parser);
     
         switch(sqlNode.getKind()){
    -    case EXPLAIN:
    -      handler = new ExplainHandler(config, textPlan);
    -      break;
    -    case SET_OPTION:
    -      handler = new SetOptionHandler(context);
    -      break;
    -    case OTHER:
    -      if(sqlNode instanceof SqlCreateTable) {
    -        handler = ((DrillSqlCall)sqlNode).getSqlHandler(config, textPlan);
    +      case EXPLAIN:
    +        handler = new ExplainHandler(config, textPlan);
             break;
    -      }
    -
    -      if (sqlNode instanceof DrillSqlCall) {
    -        handler = ((DrillSqlCall)sqlNode).getSqlHandler(config);
    +      case SET_OPTION:
    +        handler = new SetOptionHandler(context);
             break;
    -      }
    -      // fallthrough
    -    default:
    -      handler = new DefaultSqlHandler(config, textPlan);
    +      case OTHER:
    +        if(sqlNode instanceof SqlCreateTable) {
    +          handler = ((DrillSqlCall)sqlNode).getSqlHandler(config, textPlan);
    +          break;
    +        }
    +
    +        if (sqlNode instanceof DrillSqlCall) {
    +          handler = ((DrillSqlCall)sqlNode).getSqlHandler(config);
    +          break;
    +        }
    +        // fallthrough
    +      default:
    +        handler = new DefaultSqlHandler(config, textPlan);
         }
     
         try {
    -      return handler.getPlan(sqlNode);
    +      try {
    +        return handler.getPlan(sqlNode);
    +      } catch (UserException e) {
    +        if (context.getOption(ExecConstants.DYNAMIC_UDF_SUPPORT_ENABLED).bool_val) {
    +          final Throwable rootCause = ExceptionUtils.getRootCause(e);
    +          if (rootCause instanceof SqlValidatorException
    +              && StringUtils.contains(rootCause.getMessage(), "No match found
for function signature")) {
    +            if (context.getFunctionRegistry().loadRemoteFunctions()) {
    --- End diff --
    
    Makes sense, I'll think how to do add such approach in existing code. May be I'll introduce
local registry version.


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