de.learnlib.drivers.reflect.SimplePOJODataMapper Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of learnlib-drivers-basic Show documentation

Basic Test Driver Generation Support

There is a newer version: 0.17.0

Show newest version

/* Copyright (C) 2013-2018 TU Dortmund
 * This file is part of LearnLib, http://www.learnlib.de/.
 *
 * 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.
 */
package de.learnlib.drivers.reflect;

import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.Map;

import de.learnlib.api.exception.SULException;
import de.learnlib.mapper.api.SULMapper;

/**
 * Basic stateless data mapper for objects.
 *
 * @author falkhowar
 */
public class SimplePOJODataMapper implements SULMapper {

    private final Constructor initMethod;
    private final Object[] initParams;

    protected Object delegate;

    protected SimplePOJODataMapper(Constructor initMethod, Object... initParams) {
        this.initMethod = initMethod;
        this.initParams = initParams;
    }

    @Override
    public void pre() {
        try {
            delegate = initMethod.newInstance(initParams);
        } catch (InstantiationException | IllegalAccessException | IllegalArgumentException e) {
            throw new RuntimeException(e);
        } catch (InvocationTargetException e) {
            throw new SULException(e.getCause());
        }
    }

    @Override
    public void post() {
        delegate = null;
    }

    @Override
    public MappedException mapUnwrappedException(RuntimeException exception)
            throws RuntimeException {
        return MappedException.repeatOutput(new Error(exception.getCause()), Unobserved.INSTANCE);
    }

    @Override
    public ConcreteMethodInput mapInput(MethodInput abstractInput) {
        Map params = new HashMap<>();

        return new ConcreteMethodInput(abstractInput, params, delegate);
    }

    @Override
    public AbstractMethodOutput mapOutput(Object concreteOutput) {
        return new ReturnValue(concreteOutput);
    }

    @Override
    public boolean canFork() {
        return true;
    }

    @Override
    public SULMapper fork() {
        return new SimplePOJODataMapper(initMethod, initParams);
    }

}