JSF bean initializing with faces-config.xml

Question

I've a Bean named as Bucket, it has a HashMap. I want to initialize the bean and polulate the HashMap in the faces-config.xml with a property file. How can I do that?

Bean:

public class BundleBean {
 private Map<String, String> bundlePropertiesMap = new HashMap<String, String>();
 private String bundleFileName;

 // Setter, getter goes here....
}

Property file, named as bundle.properties, and it's on the classpath.

bucket.id=DL_SERVICE

faces-config.xml file :

<managed-bean>
    <description>
        Java bean class which have bundle properties.
    </description>
    <managed-bean-name>bundleBean</managed-bean-name>
    <managed-bean-class>org.example.view.bean.BundleBean</managed-bean-class>
    <managed-bean-scope>application</managed-bean-scope>
    <managed-property>
        <property-name>bundleFileName</property-name>
        <value>bundle.properties</value>
    </managed-property>
</managed-bean>

That Map has to have the bucket.id as the key and DL_SERVICE as the value.

Thanks in Advanced~

Answer 1

Assuming the properties file is in the same ClassLoader context as BundleBean, call a method like this:

@SuppressWarnings("unchecked")
private void loadBundle(String bundleFileName, Map<String, String> map)
                                                         throws IOException {
    InputStream in = BundleBean.class.getResourceAsStream(bundleFileName);
    try {
        Properties props = new Properties();
        props.load(in);
        ((Map) map).putAll(props);
    } finally {
        in.close();
    }
}

This is best invoked using the @PostConstruct annotation. If that is not an option, call it either in the bundleFileName setter or perform a lazy check in the bundlePropertiesMap getter.

Answer 2

you can do that with spring that has a more advanced dependency injection mechanism. when you integrate spring with jsf, you can define your jsf bundlebean in the spring context

<bean id="injectCollection" class="CollectionInjection">
        <property name="map">
            <map>
                <entry key="someValue">
                    <value>Hello World!</value>
                </entry>
                <entry key="someBean">
                    <ref local="oracle"/>
                </entry>
            </map>
        </property>

Answer 3

If I'm not mistaken, JSF calls the corresponding setters when initializing the bean. Thus providing a method public void setBundleFileName(String filename) should work.