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/*
* 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;
import org.oasisopen.sca.annotation.Reference;
import org.oasisopen.sca.annotation.Scope;
import sample.SampleClient;
/**
* This client program shows how to create an SCA runtime, start it,
* and locate and invoke a SCA component
*/
@Scope("COMPOSITE")
public class CalculatorClientImpl implements SampleClient {
private CalculatorService calculatorService;
@Reference
public void setCalculatorService(CalculatorService calculatorService) {
this.calculatorService = calculatorService;
}
/**
* This code used to be in an @Init method which removed the need for a JSE client
* to prod the compoite. However OASIS is debating whether to allow references to be used
* inside @Init methods and it can cause deadlocks in our runtime. So rather than make
* changes in the runtime we are falling backon the JSE drive mechanism until we know
* which way the specs are going
*/
public void runSample() {
System.out.println("SCA API ClassLoader: " + print(Reference.class.getClassLoader()));
System.out.println("3 + 2=" + calculatorService.add(3, 2));
System.out.println("3 - 2=" + calculatorService.subtract(3, 2));
System.out.println("3 * 2=" + calculatorService.multiply(3, 2));
System.out.println("3 / 2=" + calculatorService.divide(3, 2));
}
private static String print(ClassLoader cl) {
StringBuffer buf = new StringBuffer();
for (; cl != null;) {
buf.append(cl.toString());
buf.append(' ');
cl = cl.getParent();
}
return buf.toString();
}
}
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