[jira] [Commented] (DIRAPI-360) add stream convenient methods to class Attribute

["Emmanuel Lécharny (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DIRAPI-360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17142018#comment-17142018 ] 

Emmanuel Lécharny commented on DIRAPI-360:
------------------------------------------

Assuming you want to gather all the values for an attribute that has many values, you can already do something like :

{code:java}
Set<Dn> dns = new HashSet<>();
attribute.iterator().forEachRemaining( dn -> dns.add( LDAPUtil.getDn(dn ) ));

return dns;
{code}

(sort of, I have not tested this code. There may be even more efficient ways to do that...)

> add stream convenient methods to class Attribute
> ------------------------------------------------
>
>                 Key: DIRAPI-360
>                 URL: https://issues.apache.org/jira/browse/DIRAPI-360
>             Project: Directory Client API
>          Issue Type: Improvement
>    Affects Versions: 2.0.1
>            Reporter: Darth Bolek
>            Priority: Trivial
>
> When attribute has multiple values (groupOfUniqueNames -> uniqueMember) there is no stream convenient way of processing all of the values.
>  
> what to do:
> add methods to class: org.apache.directory.api.ldap.model.entry.Attribute
> Collection<String> getStringValues()
> possibly also other methods with other/generic data types.
>  
> example:
> Before (that is right now):
>  
> {code:java}
> Set<Dn> m = entry.getAttributes().stream()
> 		.filter(x -> group_fields.contains(x.getUpId()) )
> 		.flatMap(y -> {
> 				Set<String> tmpSet = new HashSet<String>();
> 				y.forEach(z -> tmpSet.add(z.getString()));
> 				return tmpSet.stream();
> 		} )
> 		.map(z -> LDAPUtil.getDn(z))
> 		.collect(Collectors.toSet());
> {code}
>  
> After:
> {code:java}
> Set<Dn> m = entry.getAttributes().stream()
> 		.filter(x -> group_fields.contains(x.getUpId()) )
> 		.flatMap(y -> y.getStringValues().stream() )
>                 .map(z -> LDAPUtil.getDn(z))
> 		.collect(Collectors.toSet());
> {code}
>  



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