1 files changed, 53 insertions, 0 deletions
diff --git a/sandbox/rfeng/scatours-creditcard-payment-dosgi-contribution/src/main/java/scatours/currency/impl/CurrencyConverterImpl.java b/sandbox/rfeng/scatours-creditcard-payment-dosgi-contribution/src/main/java/scatours/currency/impl/CurrencyConverterImpl.java
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+++ b/sandbox/rfeng/scatours-creditcard-payment-dosgi-contribution/src/main/java/scatours/currency/impl/CurrencyConverterImpl.java
@@ -0,0 +1,53 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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 scatours.currency.impl;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.oasisopen.sca.annotation.Service;
+
+import scatours.currency.CurrencyConverter;
+
+/**
+ * An implementation of the CurrencyConverter service
+ */
+@Service(CurrencyConverter.class)
+public class CurrencyConverterImpl implements CurrencyConverter {
+
+    // currency index
+    private Map<String, Integer> currencyIndex = new HashMap<String, Integer>();
+
+    // exchange rates
+    private final float rates[][] = { {1.00f, 0.50f, 0.66f}, {2.00f, 1.00f, 1.33f}, {1.50f, 0.75f, 1.00f}};
+
+    public CurrencyConverterImpl() {
+        currencyIndex.put("USD", new Integer(0));
+        currencyIndex.put("GBP", new Integer(1));
+        currencyIndex.put("EUR", new Integer(2));
+    }
+
+    public float getExchangeRate(String fromCurrencyCode, String toCurrencyCode) {
+        return rates[currencyIndex.get(fromCurrencyCode).intValue()][currencyIndex.get(toCurrencyCode).intValue()];
+    }
+
+    public float convert(String fromCurrencyCode, String toCurrencyCode, float amount) {
+        return amount * getExchangeRate(fromCurrencyCode, toCurrencyCode);
+    }
+}