1 files changed, 114 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/distributed-osgi-static/calculator-bundle/src/main/java/calculator/dosgi/impl/CalculatorServiceDSImpl.java b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/distributed-osgi-static/calculator-bundle/src/main/java/calculator/dosgi/impl/CalculatorServiceDSImpl.java
new file mode 100644
index 0000000000..9c80c5beb9
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/samples/learning-more/distributed-osgi-static/calculator-bundle/src/main/java/calculator/dosgi/impl/CalculatorServiceDSImpl.java
@@ -0,0 +1,114 @@
+/*
+ * 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 calculator.dosgi.impl;
+
+import org.osgi.service.component.ComponentContext;
+
+import calculator.dosgi.CalculatorService;
+import calculator.dosgi.operations.AddService;
+import calculator.dosgi.operations.DivideService;
+import calculator.dosgi.operations.MultiplyService;
+import calculator.dosgi.operations.SubtractService;
+
+/**
+ * An implementation of the Calculator service.
+ */
+public class CalculatorServiceDSImpl implements CalculatorService {
+    private AddService addService;
+    private SubtractService subtractService;
+    private MultiplyService multiplyService;
+    private DivideService divideService;
+
+    public CalculatorServiceDSImpl() {
+        super();
+        System.out.println("CalculatorServiceDSImpl()");
+    }
+
+    protected void activate(ComponentContext context) {
+        System.out.println("Activating " + context);
+    }
+
+    protected void deactivate(ComponentContext context) {
+        System.out.println("Deactivating " + context);
+    }
+
+    /*
+     * The following setters can be used for DS injection
+     */
+    public void setAddService(AddService addService) {
+        System.out.println("setAddService()");
+        this.addService = addService;
+    }
+
+    public void setSubtractService(SubtractService subtractService) {
+        this.subtractService = subtractService;
+    }
+
+    public void setDivideService(DivideService divideService) {
+        this.divideService = divideService;
+    }
+
+    public void setMultiplyService(MultiplyService multiplyService) {
+        this.multiplyService = multiplyService;
+    }
+
+    /*
+     * The following setters can be used for DS injection
+     */
+    public void unsetAddService(AddService addService) {
+        System.out.println("unsetAddService()");
+        this.addService = null;
+    }
+
+    public void unsetSubtractService(SubtractService subtractService) {
+        this.subtractService = null;
+    }
+
+    public void unsetDivideService(DivideService divideService) {
+        this.divideService = null;
+    }
+
+    public void unsetMultiplyService(MultiplyService multiplyService) {
+        this.multiplyService = null;
+    }    
+    private <T> T getService(Class<T> cls) {
+        for (Object s : new Object[] {addService, subtractService, multiplyService, divideService}) {
+            if (cls.isInstance(s)) {
+                return cls.cast(s);
+            }
+        }
+        throw new IllegalStateException(cls.getSimpleName() + " is not available");
+    }
+
+    public double add(double n1, double n2) {
+        return getService(AddService.class).add(n1, n2);
+    }
+
+    public double subtract(double n1, double n2) {
+        return getService(SubtractService.class).subtract(n1, n2);
+    }
+
+    public double multiply(double n1, double n2) {
+        return getService(MultiplyService.class).multiply(n1, n2);
+    }
+
+    public double divide(double n1, double n2) {
+        return getService(DivideService.class).divide(n1, n2);
+    }
+}