PrimeFaces extensions - empty value attribute

Question

On my page, I have <pe:inputNumber> which refers to a not mandatory field. If I leave it empty, it sets the value to 0 even if I set emptyValue = "". What should I do or what should I use, if this component cannot offer me that functionality?

try using `Integer`/`Long` instead of `int`/`long` – Daniel Jan 30 '13 at 15:35 — Daniel, Jan 30 '13 at 15:35
I already use Integer not int and yet the same problem – miroslav_mijajlovic Jan 30 '13 at 15:42 — miroslav_mijajlovic, Jan 30 '13 at 15:42

score 6 · Accepted Answer · answered Jan 30 '13 at 17:02

You might need to specifically instruct JSF to interpret empty input fields as null as against coercing it to "0" with the context-param

<context-param>
    <param-name>javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL</param-name>
    <param-value>true</param-value>
</context-param>

Additionally, for a container built on tomcat (JBoss, WSphere etc), you should set the following JVM config property (pretty easy to do within an IDE)

-Dorg.apache.el.parser.COERCE_TO_ZERO=false

PrimeFaces extensions - empty value attribute

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