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From "Henri Yandell (JIRA)" <j...@apache.org>
Subject [jira] Updated: (LANG-395) annotations based builders
Date Mon, 01 Feb 2010 07:25:50 GMT

     [ https://issues.apache.org/jira/browse/LANG-395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Henri Yandell updated LANG-395:
-------------------------------

    Fix Version/s:     (was: 3.0)
                   3.1

Moving to 3.1 as not a backwards-incompatible enhancement, so no need to work hard to get
in 3.0.

> annotations based builders
> --------------------------
>
>                 Key: LANG-395
>                 URL: https://issues.apache.org/jira/browse/LANG-395
>             Project: Commons Lang
>          Issue Type: New Feature
>          Components: lang.builder.*
>            Reporter: Jörg Gottschling
>             Fix For: 3.1
>
>
> What about enabling the builders (ToStringBuilder, EqualsBuilder, etc.) that use reflection
to use annotations to find the field to include?
> Something like:
> ToStringBuilder.annotationsBasedToString(Object object, Class<Annotation> class,
Class<?> reflectUpToClass)
> One could use the JPA-Annotation @ID for example, espescially for Equals- and HashCodeBuilder.
There should also be some default annotation comming with LangTwo.
> Usage:
> public class User
> {
>   @StringRepresentation
>   @EqualsAndHashCode
>   private String name
>   @StringRepresentation
>   private String email;
>   private String password;
>   // ...
>   @Override
>   public String toString()
>   {
>     return annotationsBasedToString(this);
>   }
>   @Override
>   public boolean equals(Object other)
>   {
>     return annotationsBasedEquals(this, other);
>   }
>   @Override
>   public int hashCode()
>   {
>     return annotationsBasedHashCode(this);
>   }
> }

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