<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">+1<div class=""><br class=""><div><blockquote type="cite" class=""><div class="">Am 21.11.2016 um 15:51 schrieb Matt Benson <<a href="mailto:mbenson@apache.org" class="">mbenson@apache.org</a>>:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">On Mon, Nov 21, 2016 at 8:18 AM, Gunnar Morling <</span><a href="mailto:gunnar@hibernate.org" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">gunnar@hibernate.org</a><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">> wrote:</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Yes, probably we should not support Optional for fields. Also parameters are<br class="">dubious (the JDK team discourages that afaik). But supporting it for return<br class="">values (and getter-based properties) seems reasonable.<br class=""></blockquote><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">+1</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Matt (with apologies for not having participated earlier in the spec</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">2.0 process)</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><blockquote type="cite" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><br class="">2016-11-21 14:32 GMT+01:00 Emmanuel Bernard <<a href="mailto:emmanuel@hibernate.org" class="">emmanuel@hibernate.org</a>>:<br class=""><blockquote type="cite" class=""><br class=""><br class="">On 7 Nov 2016, at 23:42, Hendrik Ebbers <<a href="mailto:hendrik.ebbers@me.com" class="">hendrik.ebbers@me.com</a>> wrote:<br class=""><br class="">I don’t think that support for Optional is that important since having a<br class="">field of type Optional looks like an anti-pattern to me. Normally Optional<br class="">should be used as a method return type and not as a type for a field.<br class="">Supporting it in the bean validation might end in strange model classes.<br class=""><br class="">Example:<br class=""><br class="">The following model looks good to me:<br class=""><br class="">public class Model {<br class=""><br class="">@NotNull<br class="">private String name;<br class=""><br class="">public String getName() { return name; }<br class=""><br class="">public void setName(String name) { this.name = name; }<br class=""><br class="">public Optional<String> name() { return Optional.ofNullable(name);}<br class=""><br class="">}<br class=""><br class="">On the other hand this looks like an anti-pattern to me:<br class=""><br class="">public class Model {<br class=""><br class="">@NotNull<br class="">private Optional<String> name;<br class=""><br class="">public Optional<String> getName() { return name; }<br class=""><br class="">public void setName(String name) { this.name = Optional.ofNullable(name);<br class="">}<br class=""><br class="">}<br class=""><br class=""><br class="">Yes Optional on a property is deemed an anti pattern by the JDK team but<br class="">since Bean Validation supports contraints on method parameters and return<br class="">values, this is still a valid use case<br class=""><br class="">Optional<@Email String> getUserEmail(@NotNull UUID userId);<br class=""><br class="">Emmanuel<br class=""><br class=""><br class="">_______________________________________________<br class="">beanvalidation-dev mailing list<br class=""><a href="mailto:beanvalidation-dev@lists.jboss.org" class="">beanvalidation-dev@lists.jboss.org</a><br class="">https://lists.jboss.org/mailman/listinfo/beanvalidation-dev<br class=""></blockquote><br class=""><br class=""><br class="">_______________________________________________<br class="">beanvalidation-dev mailing list<br class=""><a href="mailto:beanvalidation-dev@lists.jboss.org" class="">beanvalidation-dev@lists.jboss.org</a><br class="">https://lists.jboss.org/mailman/listinfo/beanvalidation-dev<br class=""></blockquote><br style="font-family: Helvetica; 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