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Tensorics is a java framework which uses a tensor as a central object. A tensor represents a set of values placed in an N-dimensional space. Wherever you are tempted to use maps of maps, a tensor might be a good choice ;-) Tensorics provides methods to create, transform and performing calculations with those tensors.

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// @formatter:off
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 * This file is part of tensorics.
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 * Copyright (c) 2008-2011, CERN. All rights reserved.
 *
 * 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,
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// @formatter:on

package org.tensorics.core.quantity.operations;

import org.tensorics.core.quantity.QuantifiedValue;
import org.tensorics.core.quantity.options.BinaryOperationValidityStrategy;
import org.tensorics.core.quantity.options.QuantityEnvironment;

import com.google.common.base.Optional;


/**
 * @author kfuchsbe
 * @param 
 */
public class AbstractQuantityOperation {

    private final QuantityEnvironment mathsEnvironment;

    protected AbstractQuantityOperation(QuantityEnvironment environment) {
        super();
        this.mathsEnvironment = environment;
    }

    protected QuantityEnvironment environment() {
        return mathsEnvironment;
    }

    protected boolean validityFor(QuantifiedValue leftOperand, QuantifiedValue rightOperand) {
        return environment().options().get(BinaryOperationValidityStrategy.class)
                .validityForBinaryOperation(leftOperand, rightOperand);
    }

    protected Optional productError(QuantifiedValue leftOperand, QuantifiedValue rightOperand) {
        return environment().errorPropagation().errorForProductAndDivision(leftOperand, rightOperand);
    }

}