[jira] Created: (TAP5-736) TextField validate parameter allows Null, but throws NPE

["Lukasz Jazgar (JIRA)" <ji...@apache.org>]

TextField validate parameter allows Null, but throws NPE
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                 Key: TAP5-736
                 URL: https://issues.apache.org/jira/browse/TAP5-736
             Project: Tapestry 5
          Issue Type: Bug
          Components: tapestry-core
    Affects Versions: 5.1.0.5
            Reporter: Lukasz Jazgar


Component TextField has parameter "validate" annotated by
   @Parameter(defaultPrefix = BindingConstants.VALIDATE)
There is no attribute allowNull, but it has default value "true" (http://tapestry.apache.org/tapestry5.1/apidocs/org/apache/tapestry5/annotations/Parameter.html#allowNull()). 
So null value is allowed according to specification.

But if you set parameter validate to null, NullPointerException is thrown from AbstractTextProperties.begin(MarkupWriter writer), line: 173.

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