MultiBundleMessageTemplateProvider.java
/**
* Copyright (c) 2025, RTE (http://www.rte-france.com)
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
* SPDX-License-Identifier: MPL-2.0
*/
package com.powsybl.commons.report;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
/**
* Bundle message template provider based on several {@link ResourceBundle}.
* @author Florian Dupuy {@literal <florian.dupuy at rte-france.com>}
*/
public class MultiBundleMessageTemplateProvider implements MessageTemplateProvider {
private final String[] bundleBaseNames;
private final boolean throwIfUnknownKey;
public MultiBundleMessageTemplateProvider(String... bundleBaseNames) {
this(false, bundleBaseNames);
}
public MultiBundleMessageTemplateProvider(boolean throwIfUnknownKey, String... bundleBaseNames) {
this.bundleBaseNames = bundleBaseNames;
this.throwIfUnknownKey = throwIfUnknownKey;
}
@Override
public String getTemplate(String key, Locale locale) {
for (String bundleBaseName : bundleBaseNames) {
ResourceBundle bundle = ResourceBundle.getBundle(bundleBaseName, locale);
if (bundle.containsKey(key)) {
return bundle.getString(key);
}
}
if (throwIfUnknownKey) {
throw new MissingResourceException("Could not find template for key '{}'", PropertyResourceBundle.class.getName(), key);
} else {
return MessageTemplateProvider.getMissingKeyMessage(key, locale);
}
}
}