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https://issues.apache.org/jira/browse/TAPESTRY-1389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship resolved TAPESTRY-1389.
--------------------------------------------
Resolution: Duplicate
Fix Version/s: 5.0.6
Assignee: Howard M. Lewis Ship
Duplicate of TAPESTRY-1648. We now coerce null to numeric types correctly (as
the value 0).
> Coercion to numeric types does not check for null
> -------------------------------------------------
>
> Key: TAPESTRY-1389
> URL: https://issues.apache.org/jira/browse/TAPESTRY-1389
> Project: Tapestry
> Issue Type: Bug
> Components: Framework
> Affects Versions: 5.0.3
> Environment: N/A
> Reporter: Bogdan Calmac
> Assignee: Howard M. Lewis Ship
> Fix For: 5.0.6
>
>
> When a TextField form element is bound to a numeric property (Double,
> Integer, aso) and no value is provided in the form (perfectly valid if the
> field is optional) the coercion code throws NullPointerException when trying
> to call new Double(null). The coercion code should check for null and not
> call the constructor with a null argument.
> On the other hand, if this is considered normal behaviour, there should be a
> way to bind a TextField to a numeric property and to make it optional on the
> form.
> Here follows a test case illustrating the problem:
> DoubleCoercionTest.html:
> ------------------------------------
> <html xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";>
> <body>
> <form t:type="Form">
> <p><input t:type="TextField" t:value="doubleTest" size="40"/>
> <input t:type="Submit"/></p>
> </form>
> </body>
> </html>
> DoubleCoercionTest.java:
> -----------------------------------
> import org.apache.tapestry.annotations.Persist;
> public class DoubleCoercionTest
> {
> @Persist
> private Double doubleTest;
> public Double getDoubleTest() {return doubleTest;}
> public void setDoubleTest(Double doubleTest) {this.doubleTest =
> doubleTest;}
> }
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