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https://issues.apache.org/jira/browse/SOLR-3207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13230287#comment-13230287
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Yonik Seeley commented on SOLR-3207:
------------------------------------
bq. same used for java identifiers (Character#isJavaIdentifierPart), plus the
use of trailing '.' and '-'
I think we should prob define it as I documented in the schema:
<!-- field names should consist of alphanumeric or underscore characters
only and
not start with a digit. This is not currently strictly enforced,
but other field names will not have first class support from all
components
and back compatibility is not guaranteed.
-->
> Add field name validation
> -------------------------
>
> Key: SOLR-3207
> URL: https://issues.apache.org/jira/browse/SOLR-3207
> Project: Solr
> Issue Type: Improvement
> Affects Versions: 4.0
> Reporter: Luca Cavanna
> Fix For: 4.0
>
> Attachments: SOLR-3207.patch
>
>
> Given the SOLR-2444 updated fl syntax and the SOLR-2719 regression, it would
> be useful to add some kind of validation regarding the field names you can
> use on Solr.
> The objective would be adding consistency, allowing only field names that you
> can then use within fl, sorting etc.
> The rules, taken from the actual StrParser behaviour, seem to be the
> following:
> - same used for java identifiers (Character#isJavaIdentifierPart), plus the
> use of trailing '.' and '-'
> - for the first character the rule is Character#isJavaIdentifierStart minus
> '$' (The dash can't be used as first character (SOLR-3191) for example)
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