javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL does not work anymore since Java EE 7 / EL 3.0

Question

    javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL
    true         


        

Answer 1

We tested all Oracle EL 2.2.2, 3.0.0, 3.0.1-b0X[1-8] and with Apache Jasper EL 3.0 in Tomcat 7.0.xx or Tomcat 8.0.30 using or not custom ELResolver Wrapper with ELResolver fixed @ faces-config.xml level.

The result is the same. String MethodExpression null is interpreted as EMPTY String ""

Calling from EL the following methods with t=null;

Case 1

public final void checkObject(Object t) 
...
#{myBean.checkObject(null)} -> Receive null (OK)

Case 2

public final void checkString(String t) 
...
#{myBean.checkString(null)} -> Receive EMPTY String "" (NOT OK)

Case 3

public final void checkDouble(double t) 
...
#{myBean.checkDouble(null)} -> Receive 0.0 (OK)

Case 4

public final void checkBigDecimal(BigDecimal t) 
...
#{myBean.checkBigDecimal(null)} -> Receive null (OK)