package com.onaro.util;

import java.util.*;

public class ResourceBundleChain extends ResourceBundle{
    private ResourceBundle son;

    public ResourceBundleChain(ResourceBundle parent,ResourceBundle son) {
        assert son != null: "son is null"; //$NON-NLS-1$
        assert parent != null: "parent is null"; //$NON-NLS-1$
        
        this.son = son;
        setParent(parent);
    }

    public Enumeration<String> getKeys() {
        return son.getKeys();
    }


    protected Object handleGetObject(String key) {
        try {
            //calling to getObjet results  throwing of MissingResourceException if the key does not exist...
            return son.getObject(key);
        } catch (MissingResourceException e) {
            return null;
        }
    }
}