sca/samples/Calculator/CalculatorModule/CalculatorImpl.cpp

/*
 *
 *  Copyright 2006 The Apache Software Foundation or its licensors, as applicable.
 *
 *  Licensed 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.
 */

#include "CalculatorImpl.h"
#include <stdio.h>

#include "DivideService.h"
#include "osoa/sca/ComponentContext.h"
#include "osoa/sca/ServiceRuntimeException.h"

CalculatorImpl::CalculatorImpl()
{
}
    
CalculatorImpl::~CalculatorImpl()
{
}

// Calculator interface
float CalculatorImpl::add(float arg1, float arg2)
{
    float result = arg1 + arg2;

    printf("CalculatorImpl::add %f + %f = %f\n", arg1, arg2, result);
    return result;
}

float CalculatorImpl::sub(float arg1, float arg2)
{
    float result = arg1 - arg2;
    printf("CalculatorImpl::sub %f - %f = %f\n", arg1, arg2, result);
    return result;
}

float CalculatorImpl::mul(float arg1, float arg2)
{
    float result = arg1 * arg2;
    printf("CalculatorImpl::mul %f * %f = %f\n", arg1, arg2, result);
    return result;
}

float CalculatorImpl::div(float arg1, float arg2)
{
    float result = 0;

    // This method shows how to invoke a service on a different component from within a component

    // First, get the current ComponentContext
    osoa::sca::ComponentContext myContext = osoa::sca::ComponentContext::getCurrent();

    try
    {
        // Find the required service, as referenced in CalculatorImpl.componentType
        DivideService* divideService = (DivideService*)myContext.getService("CalculatorDivideService");

        // Finally, invoke the service
        result = divideService->divide(arg1, arg2);

        printf("CalculatorImpl::div DivideService returned result: %f\n", result);

    }
    catch (osoa::sca::ServiceRuntimeException& e)
    {
        // Print out error message and carry on
        printf("CalculatorImpl::div Error whilst invoking DivideService: %s", e.getMessageText());
    }

    return result;
}