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https://issues.apache.org/jira/browse/SOLR-12108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16405488#comment-16405488
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ASF subversion and git services commented on SOLR-12108:
--------------------------------------------------------
Commit 11af2144b66717f41e2fcb5c73c7059cf009a00a in lucene-solr's branch
refs/heads/branch_7x from Chris Hostetter
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=11af214 ]
SOLR-11891: DocStreamer now respects the ReturnFields when populating a
SolrDocument
This is an optimization that reduces the number of unneccessary fields a
ResponseWriter will see if documentCache is used
This commit also includes fixes for SOLR-12107 & SOLR-12108 -- two bugs that
were previously dependent on the
un-optimized behavior of DocStreamer in order to function properly.
- SOLR-12107: Fixed a error in [child] transformer that could ocur if
documentCache was not used
- SOLR-12108: Fixed the fallback behavior of [raw] and [xml] transformers when
an incompatble 'wt' was specified,
the field value was lost if documentCache was not used.
(cherry picked from commit 8bd7e5c9d254c1d629a784e0b601885adea2f57b)
> raw transformers ([json] and [xml]) drop the field value if wt is not a match
> and documentCache is not enabled
> --------------------------------------------------------------------------------------------------------------
>
> Key: SOLR-12108
> URL: https://issues.apache.org/jira/browse/SOLR-12108
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Hoss Man
> Assignee: Hoss Man
> Priority: Major
>
> discovered this while working on SOLR-11891...
> The {{RawValueTransformerFactory}} class is suppose to treat the field value
> as a normal string in situations where an instance is limited by the {{wt}}
> param (which it is automatically for the default {{[json]}} and {{[xml]}}
> transformers.
> This is currently implemented by {{RawValueTransformerFactory.create()}}
> assuming it can just return "null" if the ResponseWriter in use doesn't match
> - but because of how this transformer abuses the "key" to implicitly indicate
> the field to be returned (ie: {{my_json_fieldName:[json]}}, it means that
> nothing about the resulting {{ReturnFields}} datastructure indicates that the
> field ({{my_json_fieldName}}) should be returned at all.
> Because of the existing sloppy code in SOLR-11891, that means this bug in
> ChildDocumentTransformer only impacts current users if the documentCache is
> disabled
> ----
> Example steps to reproduce w/techproducts config assuming {{solrconfig.xml}}
> is edited to disable documentCache...
> {noformat}
> $ curl 'http://localhost:8983/solr/techproducts/update?commit=true' -H
> 'Content-Type: application/json' --data-binary '[
> {
> "id": "1",
> "raw_s":"{\"raw\":\"json\"}" } ]'
> {
> "responseHeader":{
> "status":0,
> "QTime":39}}
> $ curl 'http://localhost:8983/solr/techproducts/query?wt=json&q=id:1&fl=raw_s'
> {
> "responseHeader":{
> "status":0,
> "QTime":2,
> "params":{
> "q":"id:1",
> "fl":"raw_s",
> "wt":"json"}},
> "response":{"numFound":1,"start":0,"docs":[
> {
> "raw_s":"{\"raw\":\"json\"}"}]
> }}
> $ curl
> 'http://localhost:8983/solr/techproducts/query?wt=json&q=id:1&fl=raw_s:%5Bjson%5D'
> {
> "responseHeader":{
> "status":0,
> "QTime":0,
> "params":{
> "q":"id:1",
> "fl":"raw_s:[json]",
> "wt":"json"}},
> "response":{"numFound":1,"start":0,"docs":[
> {
> "raw_s":{"raw":"json"}}]
> }}
> $ curl
> 'http://localhost:8983/solr/techproducts/query?wt=xml&q=id:1&fl=raw_s:%5Bjson%5D'
> <?xml version="1.0" encoding="UTF-8"?>
> <response>
> <lst name="responseHeader">
> <int name="status">0</int>
> <int name="QTime">0</int>
> <lst name="params">
> <str name="q">id:1</str>
> <str name="fl">raw_s:[json]</str>
> <str name="wt">xml</str>
> </lst>
> </lst>
> <result name="response" numFound="1" start="0">
> <doc></doc>
> </result>
> </response>
> {noformat}
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