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Posted to dev@pig.apache.org by "Gianmarco De Francisci Morales (JIRA)" <ji...@apache.org> on 2011/06/08 22:33:58 UTC
[jira] [Commented] (PIG-2111) UDF registration for nested classes
is unintuitive
[ https://issues.apache.org/jira/browse/PIG-2111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13046196#comment-13046196 ]
Gianmarco De Francisci Morales commented on PIG-2111:
-----------------------------------------------------
Definitely +1
> UDF registration for nested classes is unintuitive
> --------------------------------------------------
>
> Key: PIG-2111
> URL: https://issues.apache.org/jira/browse/PIG-2111
> Project: Pig
> Issue Type: Wish
> Reporter: Gianmarco De Francisci Morales
> Priority: Minor
>
> Using nested classes by referring to them as "package.OuterClass.InnerClass" does not work with the register command (package.OuterClass\$InnerClass is the correct but unintuitive way to address them).
> {code}
> package mypackage
> public class URLFuncs {
> public static class MyEvalFunc extends EvalFunc<String> {
> @Override
> public String exec(Tuple input) throws IOException {
> if (input == null || input.size() == 0)
> return null;
> try {
> Object value = input.get(0);
> if (!(value instanceof String))
> throw new IOException("Cannot convert a " + DataType.findTypeName(value));
> String url = (String) value;
> return url.toUpperCase();
> } catch (ExecException ee) {
> throw new IOException("Caught exception processing input row ", ee);
> }
> }
> }
> {code}
> The error is as follows:
> {code}
> [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1070: Could not resolve mypackage.URLFuncs.MyEvalFunc using imports:
> [org.apache.pig.builtin., org.apache.pig.impl.builtin., com.yahoo.yst.sds.ULT., myna.,
> org.apache.pig.piggybank.evaluation., org.apache.pig.piggybank.evaluation.datetime.,
> org.apache.pig.piggybank.evaluation.decode., org.apache.pig.piggybank.evaluation.math.,
> org.apache.pig.piggybank.evaluation.stats., org.apache.pig.piggybank.evaluation.string.,
> org.apache.pig.piggybank.evaluation.util., org.apache.pig.piggybank.evaluation.util.apachelogparser.,
> string., util., math., datetime., sequence., util., org.apache.hadoop.zebra.pig., ,
> org.apache.pig.builtin., org.apache.pig.impl.builtin.]
> {code}
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