sigram commented on a change in pull request #1506:
URL: https://github.com/apache/lucene-solr/pull/1506#discussion_r429847378
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File path: solr/core/src/java/org/apache/solr/handler/export/ExportWriter.java
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@@ -216,14 +376,53 @@ public void write(OutputStream os) throws IOException {
return;
}
+ String expr = params.get(StreamParams.EXPR);
+ if (expr != null) {
+ StreamFactory streamFactory = initialStreamContext.getStreamFactory();
+ try {
+ StreamExpression expression = StreamExpressionParser.parse(expr);
+ if (streamFactory.isEvaluator(expression)) {
+ streamExpression = new StreamExpression(StreamParams.TUPLE);
+ streamExpression.addParameter(new
StreamExpressionNamedParameter(StreamParams.RETURN_VALUE, expression));
+ } else {
+ streamExpression = expression;
+ }
+ } catch (Exception e) {
+ writeException(e, writer, true);
+ return;
+ }
+ streamContext = new StreamContext();
+ streamContext.setRequestParams(params);
+ // nocommit enforce this?
+ streamContext.setLocal(true);
+
+ streamContext.workerID = 0;
+ streamContext.numWorkers = 1;
+
streamContext.setSolrClientCache(initialStreamContext.getSolrClientCache());
+ streamContext.setModelCache(initialStreamContext.getModelCache());
+ streamContext.setObjectCache(initialStreamContext.getObjectCache());
+ streamContext.put("core", req.getCore().getName());
Review comment:
It's consistent with other places that create StreamContext.
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