com.hazelcast.org.codehaus.commons.compiler.samples.ShippingCost Maven / Gradle / Ivy
/*
* Janino - An embedded Java[TM] compiler
*
* Copyright (c) 2001-2010 Arno Unkrig. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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package com.hazelcast.org.codehaus.commons.compiler.samples;
import com.hazelcast.org.codehaus.commons.compiler.CompilerFactoryFactory;
import com.hazelcast.org.codehaus.commons.compiler.IExpressionEvaluator;
/**
* Sample application which demonstrates how to use the {@link IExpressionEvaluator} class.
*/
public final
class ShippingCost {
private ShippingCost() {}
/***/
public static void
main(String[] args) throws Exception {
if (args.length != 1) {
System.err.println("Usage: ");
System.err.println("Computes the shipping costs from the double value \"total\".");
System.err.println("If \"total\" is less than 100.0, then the result is 7.95, else the result is 0.");
System.exit(1);
}
// Convert command line argument to call argument "total".
Object[] arguments = { new Double(args[0]) };
// Create "ExpressionEvaluator" object.
IExpressionEvaluator ee = CompilerFactoryFactory.getDefaultCompilerFactory().newExpressionEvaluator();
ee.setExpressionType(double.class);
ee.setParameters(new String[] { "total" }, new Class[] { double.class });
ee.cook("total >= 100.0 ? 0.0 : 7.95");
// Evaluate expression with actual parameter values.
Object res = ee.evaluate(arguments);
// Print expression result.
System.out.println("Result = " + String.valueOf(res));
}
}