[jira] [Updated] (SOLR-4275) TrieTokenizer causes StringIOOBE when input is empty instead of returning no token

["Uwe Schindler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-4275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Uwe Schindler updated SOLR-4275:
--------------------------------

    Attachment: SOLR-4275.patch

Simle patch. It also corrects the read logic so it also works with unbuffered input readers.
                
> TrieTokenizer causes StringIOOBE when input is empty instead of returning no token
> ----------------------------------------------------------------------------------
>
>                 Key: SOLR-4275
>                 URL: https://issues.apache.org/jira/browse/SOLR-4275
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 4.0
>            Reporter: Uwe Schindler
>            Assignee: Uwe Schindler
>             Fix For: 4.1, 5.0
>
>         Attachments: SOLR-4275.patch
>
>
> When you use the admin interface and select a trie field (e.g. tint) and enter nothing into the field, the tokenizer should normally return no tokens. TrieTokenizer instead gets and SIOOBE because read() into the charbuffer returns -1 (end of stream). This is used to initialize the string's length...
> The fix is to modify the tokenizer to behave like a real tokenizer:
> - after reading the input, check if empty (read < 0) and then use 0 as length
> - if the resulting string is empty (total len == 0), set a boolean to false and make the incrementToken/end methods not delegate and return false.

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