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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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 * This file is part of tensorics.
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 * Copyright (c) 2008-2011, CERN. All rights reserved.
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 * 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
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package org.tensorics.core.resolve.resolvers;

import org.tensorics.core.expressions.BinaryPredicateExpression;
import org.tensorics.core.tree.domain.ResolvingContext;

/**
 * A resolver that takes a predicate whose two operands are resolved and resolves it into a result.
 *
 * @param  the input type of the expression
 * @author caguiler
 */
public class BinaryPredicateResolver extends AbstractResolver> {

    @Override
    public boolean canResolve(BinaryPredicateExpression expression, ResolvingContext context) {
        return context.resolves(expression.getLeft()) && context.resolves(expression.getRight());
    }

    @Override
    public Boolean resolve(BinaryPredicateExpression expression, ResolvingContext context) {
        T left = context.resolvedValueOf(expression.getLeft());
        T right = context.resolvedValueOf(expression.getRight());
        return expression.getPredicate().test(left, right);
    }
}