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https://issues.apache.org/jira/browse/CALCITE-4450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vova Vysotskyi updated CALCITE-4450:
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Summary: ElasticSearch query with varchar literal projection fails with
JsonParseException (was: Query on ElasticSearch table that projects varchar
literal fails with JsonParseException)
> ElasticSearch query with varchar literal projection fails with
> JsonParseException
> ---------------------------------------------------------------------------------
>
> Key: CALCITE-4450
> URL: https://issues.apache.org/jira/browse/CALCITE-4450
> Project: Calcite
> Issue Type: Bug
> Affects Versions: 1.26.0
> Reporter: Vova Vysotskyi
> Assignee: Vova Vysotskyi
> Priority: Major
> Fix For: 1.27.0
>
>
> A query that contains varchar literals in projection fails for ElasticSearch
> adapter. Simple test case to reproduce the issue:
> {code:java}
> @Test void projectionStringLiteral() {
> CalciteAssert.that()
> .with(newConnectionFactory())
> .query(
> String.format(Locale.ROOT, "select 'foo' as \"lit\"\n"
> + "from \"elastic\".\"%s\"", NAME))
> .returns("lit=foo\n");
> }
> {code}
> Error:
> {noformat}
> Caused by: com.fasterxml.jackson.core.JsonParseException: Unexpected
> character ('f' (code 102)): was expecting comma to separate Object entries
> at [Source: (String)"{"script_fields": {"lit":{"script": ""foo""},
> "a":{"script": "params._source.a"}}}"; line: 1, column: 40]
> at
> com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1840)
> {noformat}
> The problem is that {{RexToElasticsearchTranslator.visitLiteral}} method do
> not escape literal quotes, and forms the following string: {{"lit":""foo""}}
> that cannot be handled by jackson.
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