diff options
author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-11 23:09:31 +0000 |
---|---|---|
committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-11 23:09:31 +0000 |
commit | a7c1a39d8c3c4ef4d5878dbff726085082a17e8a (patch) | |
tree | 54faa0e87eb8c8242a4a0baeb5f7b505a175d00f /sca-java-2.x/branches/sca-java-2.0-M3/samples/dosgi-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java | |
parent | 4e13586bc791d71c41760cf4d0a5cc908973de3e (diff) |
Moving 2.x branches
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@835136 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sca-java-2.x/branches/sca-java-2.0-M3/samples/dosgi-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java')
-rw-r--r-- | sca-java-2.x/branches/sca-java-2.0-M3/samples/dosgi-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/sca-java-2.x/branches/sca-java-2.0-M3/samples/dosgi-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java b/sca-java-2.x/branches/sca-java-2.0-M3/samples/dosgi-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java new file mode 100644 index 0000000000..046e8cf565 --- /dev/null +++ b/sca-java-2.x/branches/sca-java-2.0-M3/samples/dosgi-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java @@ -0,0 +1,98 @@ +/*
+ * 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 static org.osgi.framework.Constants.OBJECTCLASS;
+
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.Filter;
+import org.osgi.framework.InvalidSyntaxException;
+import org.osgi.util.tracker.ServiceTracker;
+
+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 CalculatorServiceImpl implements CalculatorService {
+ private ServiceTracker remoteServices;
+ private ServiceTracker localServices;
+
+ public CalculatorServiceImpl() {
+ super();
+ }
+
+ public CalculatorServiceImpl(BundleContext context) {
+ super();
+ Filter remoteFilter = null, localFilter = null;
+ try {
+ remoteFilter =
+ context.createFilter("(&(" + OBJECTCLASS + "=calculator.dosgi.operations.*) (sca.reference=*))");
+ localFilter =
+ context.createFilter("(&(" + OBJECTCLASS + "=calculator.dosgi.operations.*) (!(sca.reference=*)))");
+ } catch (InvalidSyntaxException e) {
+ e.printStackTrace();
+ }
+ this.remoteServices = new ServiceTracker(context, remoteFilter, null);
+ remoteServices.open();
+ this.localServices = new ServiceTracker(context, localFilter, null);
+ localServices.open();
+ }
+
+ private <T> T getService(Class<T> cls) {
+ Object[] remoteObjects = remoteServices.getServices();
+ if (remoteObjects != null) {
+ for (Object s : remoteObjects) {
+ if (cls.isInstance(s)) {
+ System.out.println("Remote service: " + s);
+ return cls.cast(s);
+ }
+ }
+ }
+ Object[] localObjects = localServices.getServices();
+ if (localObjects != null)
+ for (Object s : localObjects) {
+ if (cls.isInstance(s)) {
+ System.out.println("Local service: " + 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);
+ }
+}
|