[jira] Updated: (LUCENE-2601) Make getAttribute(Class attClass) Generic

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

     [ https://issues.apache.org/jira/browse/LUCENE-2601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Uwe Schindler updated LUCENE-2601:
----------------------------------

    Affects Version/s:     (was: 3.0)
                           (was: 3.0.1)
                           (was: 3.0.2)

> Make getAttribute(Class attClass) Generic
> -----------------------------------------
>
>                 Key: LUCENE-2601
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2601
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Other
>    Affects Versions: 2.9.1, 2.9.2, 2.9.3
>            Reporter: wenbin.zhu
>            Assignee: Uwe Schindler
>             Fix For: 3.0
>
>
> org.apache.lucene.util.AttributeSource
> current:
> public Attribute getAttribute(Class attClass) {
>     final Attribute att = (Attribute) this.attributes.get(attClass);
>     if (att == null) {
>       throw new IllegalArgumentException("This AttributeSource does not have the attribute '" + attClass.getName() + "'.");
>     }
>     return att;
> }
> sample usage:
> TermAttribute termAtt = (TermAttribute)ts.getAttribute(TermAttribute.class)
> my improvment:
> @SuppressWarnings("unchecked")
> 	public <T> T getAttribute2(Class<? extends Attribute> attClass) {
>     final T att = (T) this.attributes.get(attClass);
>     if (att == null) {
>       throw new IllegalArgumentException("This AttributeSource does not have the attribute '" + attClass.getName() + "'.");
>     }
>     return att;
>  }
> sample usage:
> TermAttribute termAtt = ts.getAttribute(TermAttribute.class)

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org