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JSR 354 provides an API for representing, transporting, and performing comprehensive calculations with Money and Currency. This module implements JSR 354.

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/*
 * Copyright (c) 2012, 2015, Credit Suisse (Anatole Tresch), Werner Keil and others by the @author tag.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.javamoney.moneta.internal.loader;

import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

public class LoadDataLoaderService {

	private static final Logger LOG = Logger.getLogger(DefaultLoaderListener.class.getName());

	private final DefaultLoaderListener listener;

   LoadDataLoaderService(DefaultLoaderListener listener) {
		this.listener = listener;
	}

	public boolean execute(String resourceId,
			Map resources) {

		LoadableResource load = resources.get(resourceId);
		if (load!=null) {
			try {
				if (load.load()) {
					LOG.log(Level.INFO, "Read data from: " + load.getRemoteResources());
					listener.trigger(resourceId, load.getDataStream());
					LOG.log(Level.INFO, "New data successfully loaded from: " + load.getRemoteResources());
					return true;
				}
			} catch (Exception e) {
				LOG.log(Level.WARNING, "Failed to read/load resource (checking fallback): " + resourceId,
						e);
			}
			try {
				if (load.loadFallback()) {
					LOG.log(Level.WARNING, "Read fallback data from: " + load.getFallbackResource());
					listener.trigger(resourceId, load.getDataStream());
					LOG.log(Level.WARNING, "Loaded fallback data from: " + load.getFallbackResource());
					return true;
				}
			} catch (Exception e) {
				LOG.log(Level.SEVERE, "Failed to read/load fallback resource: " + resourceId,
						e);
			}
		} else {
			throw new IllegalArgumentException("No such resource: "
					+ resourceId);
		}
		return false;
	}

	@Override
	public String toString() {
		return LoadDataLoaderService.class.getName() + '{' + " listener: " + listener + '}';
	}

}