/
ArticleHistory.java
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/
ArticleHistory.java
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//@formatter:off
/*
* Article History - another class of the component we create a FACADE for.
* Code-Beispiel zum Buch Patterns Kompakt, Verlag Springer Vieweg
* Copyright 2014 Karl Eilebrecht
*
* 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.
*/
//@formatter:on
package de.calamanari.pk.facade.article.history;
import java.util.HashMap;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Article History - another class of the component we create a FACADE for.<br>
* The history delivers details related to an article but not part of the core information.
*
* @author <a href="mailto:Karl.Eilebrecht(a/t)calamanari.de">Karl Eilebrecht</a>
*/
public class ArticleHistory {
private static final Logger LOGGER = LoggerFactory.getLogger(ArticleHistory.class);
/**
* In this example the history is a little featureless :-) Only markdown prices are provided.
*/
private Map<String, Double> articleMarkDownPrices = new HashMap<>();
/**
* Returns the current markdown price for the specified article.
*
* @param articleId identifier
* @return current mark down price or -1 to indicate unknown
*/
public double getCurrentMarkDownPrice(String articleId) {
LOGGER.debug("{}.getCurrentMarkDownPrice() called", this.getClass().getSimpleName());
double res = -1; // unknown
Double markDownPrice = articleMarkDownPrices.get(articleId);
if (markDownPrice != null) {
res = markDownPrice.doubleValue();
}
return res;
}
/**
* Sets the current markdown price for the given article
*
* @param articleId identifier
* @param markDownPrice 0 or less means unknown
*/
public void setMarkDownPrice(String articleId, double markDownPrice) {
if (markDownPrice > 0) {
articleMarkDownPrices.put(articleId, markDownPrice);
}
else {
articleMarkDownPrices.remove(articleId);
}
}
}