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https://issues.apache.org/jira/browse/SOLR-2463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13456077#comment-13456077
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Robert Zotter commented on SOLR-2463:
-------------------------------------
Still an issue in 3.6.1
> Using an evaluator outside the scope of an entity results in a null context
> ---------------------------------------------------------------------------
>
> Key: SOLR-2463
> URL: https://issues.apache.org/jira/browse/SOLR-2463
> Project: Solr
> Issue Type: Bug
> Components: contrib - DataImportHandler
> Affects Versions: 3.1.1, 3.5, 3.6, 4.0-ALPHA, 3.6.1
> Reporter: Robert Zotter
> Assignee: Shalin Shekhar Mangar
> Fix For: 3.1.1
>
>
> When using an Evaluator outside an entity element the Context argument is
> null.
> {code:title=foo.LowerCaseFunctionEvaluator.java|borderStyle=solid}
> public class LowerCaseFunctionEvaluator extends Evaluator {
> public String evaluate(String expression, Context context) {
> List l = EvaluatorBag.parseParams(expression,
> context.getVariableResolver());
>
> if (l.size() != 1) {
> throw new RuntimeException("'toLowerCase' must have only one parameter
> ");
> }
> return l.get(0).toString().toLowerCase();
> }
> }
> {code}
> {code:title=data-config.xml|borderStyle=solid}
> <dataSource name="..."
> type="..."
> driver="..."
> url="..."
> user="${dataimporter.functions.toLowerCase('THIS_WILL_NOT_WORK')}"
> password="..."/>
> {code}
> {code:title=data-config.xml|borderStyle=solid}
> <entity name="..."
> dataSource="..."
> query="select * from
> ${dataimporter.functions.toLowerCase('THIS_WILL_WORK')}"/>
> {code}
> This use case worked in 1.4
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