EnumConverter

[lagranzh]

Hello sirs.

I try call page someAction.xhtml that mapped to seam component someAction. Everything fine except of enum convertion.

enum TypeEnum {
type1
}

@Stateless
@Name("someAction")
class SomeActionBean implements SomeAction {
 private long id;
 private TypeEnum type;

 public void method() {
 ....
 }
 ....
}

pages.xml:

<page view-id="/someAction.xhtml" action="#{someAction.method}">
 <param name="id" value="#{someAction.id}"/>
 <param name="type" value="#{completeAction.type}"/>
</page>

When I call url

http://localhost:8080/myapp/someAction.seam?id=2&type=type1

logs from SomeAction.method shows that id= 2 but type is null (!)

what I am doing wrong?
The only one way that I found to work around is following:

1. implement javax.faces.convert.Converter intrface in my own class.
2. add to faces-config lines:

 <converter>
 <converter-id>MyConverter</converter-id>
 <converter-class>mypakage.MyEnumConverter</converter-class>
 </converter>
</faces-config>

3. change pages.xml to

<page view-id="/someAction.xhtml" action="#{someAction.method}">
 <param name="id" value="#{someAction.id}"/>
 <param name="type" value="#{completeAction.type}" converterId="MyConverter"/>
</page>

It is work, but (IMHO) it is ugly.

I found that seam already has some EnumConverter, so i can use it.
Please, point me to appropriate resources, where I can clerify the question.

Thank you.

PS: I use seam 1.2.0.PATCH1

[sjmenden]

Use seams built in enum handling:

Here is an example of handling a True/False Enum

<h:outputLabel for="active">
 Active
 <span class="required">*</span>
 </h:outputLabel>
 <s:decorate id="activeDecoration">
 <h:selectOneMenu id="active" value="#{testHome.instance.active}">
 <s:convertEnum />
 <s:enumItem enumValue="TRUE" label="True" />
 <s:enumItem enumValue="FALSE" label="False" />
 </h:selectOneMenu>
 </s:decorate>

public enum BooleanEnum {
 TRUE("TRUE"),
 FALSE("FALSE");
 private final String name;

 /**
 * Prevent instantiation and subclassing with a private constructor.
 */
 private BooleanEnum(String name) {
 this.name = name;
 }

 private static final Map INSTANCES = new HashMap();

 static {
 INSTANCES.put(TRUE.toString(), TRUE);
 INSTANCES.put(FALSE.toString(), FALSE);
 }

 // ********************** Common Methods ********************** //

 public String toString() {
 return name;
 }

 Object readResolve() {
 return getInstance(name);
 }

 public static JobStatus getInstance(String name) {
 return (JobStatus) INSTANCES.get(name);
 }
}

And in the entity:

@Enumerated(EnumType.STRING)
 @Column(name="ACTIVE")
 @NotNull
 public BooleanEnum getActive() {
 return active;
 }
 public void setActive(BooleanEnum active) {
 this.active = active;
 }