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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8240) CompoundConfiguration should implement Iterable
Date Thu, 04 Apr 2013 06:01:29 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8240?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-8240:
-------------------------

    Fix Version/s:     (was: 0.95.1)

Moving new feature out of 0.95.  Feel free to pull back later.
                
> CompoundConfiguration should implement Iterable
> -----------------------------------------------
>
>                 Key: HBASE-8240
>                 URL: https://issues.apache.org/jira/browse/HBASE-8240
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>             Fix For: 0.98.0
>
>         Attachments: 8240-v1.txt, 8240-v2.txt, 8240-v3.txt, 8240-v4.txt, 8240-v6.txt
>
>
> Here is from hadoop Configuration class:
> {code}
> public class Configuration implements Iterable<Map.Entry<String,String>>,
> {code}
> There're 3 addXX() methods for CompoundConfiguration:
> {code}
>   public CompoundConfiguration add(final Configuration conf) {
>   public CompoundConfiguration addWritableMap(
>       final Map<ImmutableBytesWritable, ImmutableBytesWritable> map) {
>   public CompoundConfiguration addStringMap(final Map<String, String> map) {
> {code}
> Parameters to these methods all support iteration.
> We can enhance ImmutableConfigMap with the following new method:
> {code}
>   public abstract java.util.Iterator iterator();
> {code}
> Then the following method of CompoundConfiguration can be implemented:
> {code}
>   public Iterator<Map.Entry<String, String>> iterator() {
> {code}
> This enhancement would be useful in scenario where a mutable Configuration is required.

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