[jbossseam-issues] [JBoss JIRA] Created: (JBSEAM-4169) Enum converter does not handle inner anonymous enums
Enum converter does not handle inner anonymous enums
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Key: JBSEAM-4169
URL: https://jira.jboss.org/jira/browse/JBSEAM-4169
Project: Seam
Issue Type: Bug
Affects Versions: 2.1.1.GA
Environment: JBoss 5.0.1.GA, JDK 6u13, Seam 2.1.1.GA
Reporter: Adam Michalik
The XHTML:
<h:selectManyListbox value="#{testBean.tests}">
<s:selectItems value="#{testLister.tests}" noSelectionLabel=""
var="test" label="#{test}"/>
<s:convertEnum/>
</h:selectManyListbox>
testLister returns a Set<Test>, testBean.set/getTests operates on List<Test>.
The Test enum:
package test;
public enum Test {
TEST,
TEST_ANON {
};
}
Enum converter fails with:
java.lang.IllegalArgumentException with message: "test.Test$1 is not an enum
type"
java.lang.Class.enumConstantDirectory(Class.java:2965)
java.lang.Enum.valueOf(Enum.java:191)
org.jboss.seam.ui.converter.EnumConverter.getAsObject(EnumConverter.java:44)
org.jboss.seam.ui.converter.PrioritizableConverter.getAsObject(PrioritizableConverter.java:61)
org.jboss.seam.ui.converter.ConverterChain.getAsObject(ConverterChain.java:110)
This is caused by the converter code:
else if (val instanceof Collection) {
t = ((Collection) val).iterator().next().getClass();
return Enum.valueOf(t, value);
}
When t is an anonymous inner enum, the Enum.valueOf cannot be invoked properly.
Cf.:
package test;
public enum Test {
TEST,
TEST_ANON {
};
public static void main(String[] args) {
System.out.println(Test.TEST.getClass()); // prints "class test.Test"
Class c1 = Test.TEST.getClass();
System.out.println(Enum.valueOf(c1, "TEST")); // prints "TEST"
System.out.println(Test.TEST_ANON.getClass()); // prints "class test.Test$1"
Class c2 = Test.TEST_ANON.getClass();
System.out.println(Enum.valueOf(c2, "TEST_ANON")); //
java.lang.IllegalArgumentException: test.Test$1 is not an enum type
}
}
Solution would be to use Enum's getDeclaringClass().
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