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/*
 * BundleReader.java        May 6, 2003, 3:33 PM
 *
 */

package com.sun.enterprise.tools.common.validation.util;

import java.util.MissingResourceException;
import java.util.ResourceBundle;

import com.sun.enterprise.tools.common.validation.Constants;


/**
 * BundleReader  is a Class  to read properties from the bundle.
 * <code>getValue()</code> method can be used to read the properties
 * from the bundle file(Bundle.properties). Default bundle file used
 * is <code>{ @link Constants }.BUNDLE_FILE</code>. Bundle file to use
 * can be set by using <code>setBundle()</code> method.
 *  
 * @author  Rajeshwar Patil
 * @version %I%, %G%
 <b>NOT THREAD SAFE: mutable 'resourceBundle'</b>
 */
public class BundleReader {

    /**
     * A resource bundle of this reader.
     */
    private static ResourceBundle resourceBundle;

    
    /** Creates a new instance of BundleReader */
    public BundleReader() {
    }

    private static void IGNORE_EXCEPTION(final Exception e ) {
        // ignore
    }
    /**
     * Gets the value of the the given <code>key</code> from the bundle
     * 
     * @param key the key of which, the value needs to be fetched from
     * the bundle.
     */
    public static String getValue(String key) {
        if(resourceBundle == null)
            return key;
        try {
            return resourceBundle.getString(key);
        } catch (MissingResourceException missingResourceException) {
            IGNORE_EXCEPTION(missingResourceException);
            return key;
        }
    }


    /**
     * sets the given bundle file as the file to use by this object.
     */
    public static void setBundle(String bundleFile){
        try {
            resourceBundle = ResourceBundle.getBundle(bundleFile);
        } catch (Exception ex) {
            IGNORE_EXCEPTION(ex);
        }
    }
    

    static {
        try {
            resourceBundle = ResourceBundle.getBundle(Constants.BUNDLE_FILE);
        } catch (Exception ex) {
            IGNORE_EXCEPTION(ex);
        }
    }
}