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https://issues.apache.org/jira/browse/TOBAGO-335?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12513742
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Guido Dubois commented on TOBAGO-335:
-------------------------------------
This works with empty fields!
The error message corresponds to an other field of simple double type.
> <f:convertNumber type="number"> and Double object in backing bean
> -----------------------------------------------------------------
>
> Key: TOBAGO-335
> URL: https://issues.apache.org/jira/browse/TOBAGO-335
> Project: MyFaces Tobago
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.10
> Reporter: Guido Dubois
>
> If you need to clear an input field, the easiest way is to use an object type
> like String, Date or Double. So you can set it simply to null and the field
> will be cleared. But in case of Double there will be a problem with
> <f:convertNumber>.
> In RI there is the same problem. See issue
> https://javaserverfaces.dev.java.net/issues/show_bug.cgi?id=286 for more
> details.
> This workaround helps:
> <tx:in value="#{bbg.f3}" label="field3" labelWidth="120px">
> <f:convertNumber type="number" maxFractionDigits="2" pattern="#,##0.00" />
> </tx:in>
> ...
> private Number f1;
> private Double f1double;
> ...
> public Number getF1() {
> return f1double;
> }
> public void setF1(Number f1) {
> this.f1double = f1.doubleValue();
> }
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