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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
 /*******************************************************************************
 *
 * This file is part of tensorics.
 * 
 * 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,
 * 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.
 * 
 ******************************************************************************/
// @formatter:on

package org.tensorics.core.util;

import com.google.common.reflect.Invokable;

/**
 * This instantiator expects a public constructor with a single argument of a certain type to instantiate a certain
 * class.
 * 
 * @author kfuchsbe
 * @param  the type of the argument of the constructor
 * @param  the type of the return type (type of the class to instantiate)
 */
public class SingleArgumentConstructorInstantiator extends SingleArgumentInvokableInstantiator {

    public SingleArgumentConstructorInstantiator(Class instanceClass, Class constructorArgumentClass) {
        super(instanceClass, constructorArgumentClass);
    }

    @Override
    protected Invokable invokableFor(Class constructorArgumentClass) {
        try {
            return Invokable.from(instanceClass.getConstructor(constructorArgumentClass));
        } catch (NoSuchMethodException | SecurityException e) {
            throw new IllegalArgumentException("The class '" + instanceClass
                    + "' does not have a public constructor requiring exactly one argument of type '"
                    + constructorArgumentClass + "'.", e);
        }
    }

}