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https://issues.apache.org/jira/browse/SOLR-885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12651743#action_12651743
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Yonik Seeley commented on SOLR-885:
-----------------------------------
bq. I do not see any difference between NamedList and SimpleOrderedMap . Both
has same semantics.
See the javadoc for SimpleOrderedMap:
{code}
/** <code>SimpleOrderedMap</code> is a [EMAIL PROTECTED] NamedList} where
access by key is more
* important than maintaining order when it comes to representing the
* held data in other forms, as ResponseWriters normally do.
* It's normally not a good idea to repeat keys or use null keys, but this
* is not enforced. If key uniqueness enforcement is desired, use a regular
[EMAIL PROTECTED] Map}.
* <p>
* For example, a JSON response writer may choose to write a SimpleOrderedMap
* as {"foo":10,"bar":20} and may choose to write a NamedList as
* ["foo",10,"bar",20]. An XML response writer may choose to render both
* the same way.
* </p>
{code}
The problem is that some clients don't maintain order (for example, doing
eval() of JSON/python/ruby output). It wouldn't be an issue if we had control
over all clients, but we don't.
> Generify NamedListCodec
> -----------------------
>
> Key: SOLR-885
> URL: https://issues.apache.org/jira/browse/SOLR-885
> Project: Solr
> Issue Type: Improvement
> Reporter: Noble Paul
> Priority: Minor
> Fix For: 1.4
>
> Attachments: SOLR-885.patch
>
>
> * make NamedListCodec a generic class which may be able to write any of the
> supported object
> * Deprecate NamedList and use only SimpleOrderedMap. (Yes it is backward
> compatible)
> * Ideally I wish to call this JavabinCodec because it should be able to be
> used to write any kind of supported objects
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