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Diffstat (limited to '')
-rw-r--r-- | sca-java-2.x/tags/2.0-Beta2-RC3/samples/learning-more/distributed-osgi/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/sca-java-2.x/tags/2.0-Beta2-RC3/samples/learning-more/distributed-osgi/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java b/sca-java-2.x/tags/2.0-Beta2-RC3/samples/learning-more/distributed-osgi/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java deleted file mode 100644 index aa09b27139..0000000000 --- a/sca-java-2.x/tags/2.0-Beta2-RC3/samples/learning-more/distributed-osgi/dosgi-dynamic-calculator/src/main/java/calculator/dosgi/impl/CalculatorServiceImpl.java +++ /dev/null @@ -1,99 +0,0 @@ -/* - * 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 java.util.HashMap; -import java.util.Map; - -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 Map<Class<?>, ServiceTracker> remoteServices = new HashMap<Class<?>, ServiceTracker>(); - - public CalculatorServiceImpl() { - super(); - } - - public CalculatorServiceImpl(BundleContext context) { - super(); - for (Class<?> cls : new Class<?>[] {AddService.class, SubtractService.class, MultiplyService.class, - DivideService.class}) { - Filter remoteFilter = null; - try { - remoteFilter = - context.createFilter("(&(" + OBJECTCLASS + "=" + cls.getName() + ") (service.imported=*))"); - } catch (InvalidSyntaxException e) { - e.printStackTrace(); - } - ServiceTracker tracker = new ServiceTracker(context, remoteFilter, null); - this.remoteServices.put(cls, tracker); - tracker.open(); - } - } - - private <T> T getService(Class<T> cls) { - ServiceTracker tracker = remoteServices.get(cls); - try { - // Wait for 10 seconds until the remote services are imported - tracker.waitForService(10000); - } catch (InterruptedException e) { - throw new IllegalStateException(cls.getSimpleName() + " is not available"); - } - Object[] remoteObjects = tracker.getServices(); - if (remoteObjects != null) { - for (Object s : remoteObjects) { - if (cls.isInstance(s)) { - System.out.println("Remote 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); - } -} |