Using messages (from messages.properties) in code

[rstevens]

For internationalization, we use messages from messages.properties in our XHTML file but are having problem using them in our JAVA files.

In the seam 2.0.1.GA documentation it says:

You can even use the messages in your code:

@In private Map<String, String> messages;

@In("#{messages['Hello']}") private String helloMessage;

We tried that but messages is always null. We have tried using

@In, @In (create=true), and from POJOs, entities, and even changing the scope

What are we doing wrong? Here's a code snippet:

@Name ("nameValue")
@Scope(ScopeType.APPLICATION)
@AutoCreate


public class NameValue extends Object {

     @In(create=true) private Map<String, String> messages;

     public String getName(String message, Integer index)
     {
          String[] result;
          
          result = messages.get(message).split(",");

          return result[index];
     }

[msystems]

Robert Stevens wrote on Mar 22, 2008 01:09 AM:

@In private Map<String, String> messages;

@Name ("nameValue")
@Scope(ScopeType.APPLICATION)
@AutoCreate


public class NameValue extends Object {

     @In(create=true) private Map<String, String> messages;

     public String getName(String message, Integer index)
     {
          String[] result;
          
          result = messages.get(message).split(",");

          return result[index];
     }

What?

But it should work just fine if you declare all your bundles in the components.xml:

   <core:resource-loader>
        <core:bundle-names>
            <value>your bundle #1</value>
            <value>your bundle #2</value>
            <value>your bundle etc</value>
        </core:bundle-names>
    </core:resource-loader>

and now you can use e.g.:

@In("#{messages['Hello']}") private String helloMessage;

[msystems]

BTW: You don't need to declare built-in bundles (e.g. 'messages' JSF bundles) in the components.xml. You can just use, e.g.:

@In("#{messages['javax.faces.converter.ShortConverter.SHORT_detail']}") private String message;

[rstevens]

Thanks. I've tried all your suggestions but cannot get them to work in java files.

Messages from my messages.properties bundle works fine inside annotations like:

     @Length(max=50, message="#{messages['error.length.fifty']}")
     private String city = "";

Or in xhtml files like:

     <s:decorate template="/tags/required.xhtml">
            <ui:define name="label">#{messages['register.city']}</ui:define>
            <h:inputText id="city" value="#{user.city}" required="true" size="40" maxlength="64" requiredMessage="#{messages['error.user.city.required']}"/>
        </s:decorate>

but I can't get them to work as you both have suggested in java files. I am using Seam 2.0.1.GA. Any more suggestions?

What I really want to do is to pass in string or an id to a function and have the function look up the string from messages.properties. Can that be done?

[msystems]

Robert Stevens wrote on Mar 22, 2008 06:17 PM:


Thanks. I've tried all your suggestions but cannot get them to work in java files.

Messages from my messages.properties bundle works fine inside annotations like:

     @Length(max=50, message="#{messages['error.length.fifty']}")
     private String city = "";

Or in xhtml files like:

     <s:decorate template="/tags/required.xhtml">
            <ui:define name="label">#{messages['register.city']}</ui:define>
            <h:inputText id="city" value="#{user.city}" required="true" size="40" maxlength="64" requiredMessage="#{messages['error.user.city.required']}"/>
        </s:decorate>

but I can't get them to work as you both have suggested in java files. I am using Seam 2.0.1.GA. Any more suggestions?

It works for me - there must be something wrong with your project structure/setup/packing.

Robert Stevens wrote on Mar 22, 2008 06:17 PM:


What I really want to do is to pass in string or an id to a function and have the function look up the string from messages.properties. Can that be done?

What about

SeamResourceBundle.getBundle().getString(<bundleKey>);

Or

ResourceBundle.getBundle("messages", FacesContext.getCurrentInstance().getViewRoot().getLocale()).getString(<bundleKey>);

[rstevens]

Kenneth,

Thank you! Both your examples work:

import org.jboss.seam.core.SeamResourceBundle;
import javax.faces.context.FacesContext;

          s= SeamResourceBundle.getBundle().getString("register.city");

          s= SeamResourceBundle.getBundle("messages", FacesContext.getCurrentInstance().getViewRoot().getLocale()).getString("register.city");

But why does it not work with normal notation such as:

     @In("#{register.city}") String city;

I packaged my application as a WAR file and am using hibernate. I am using mostly POJOs but some classes are declared @Entity.

Any other clues?

[msystems]

Robert Stevens wrote on Mar 22, 2008 07:28 PM:


Kenneth,

Thank you! Both your examples work:

import org.jboss.seam.core.SeamResourceBundle;
import javax.faces.context.FacesContext;

          s= SeamResourceBundle.getBundle().getString("register.city");

          s= SeamResourceBundle.getBundle("messages", FacesContext.getCurrentInstance().getViewRoot().getLocale()).getString("register.city");

But why does it not work with normal notation such as:

     @In("#{register.city}") String city;

Because you need to use:

@In("#{messages['register.city']}") String city;

[rstevens]

Sorry, typo. I meant:

@In("#{messages['register.city']}") String city;

OK. I got it working this way in a Java action file by injecting the messages:

     @In
     protected Map<String, String> messages;

     String s = messages.get("register.city");

but the same code does not work in a Java file for my model.

[pmuir]

Injection doesn't work in classes annotated

@Name("foo") @Entity

RTFM ;-)