net.cpollet.jixture.fixtures.transformers.FixtureTransformerFactory.java Source code

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Here is the source code for net.cpollet.jixture.fixtures.transformers.FixtureTransformerFactory.java

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/*
 * Copyright 2013 Christophe Pollet
 *
 * 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 net.cpollet.jixture.fixtures.transformers;

import net.cpollet.jixture.fixtures.Fixture;
import net.cpollet.jixture.fixtures.TransformableFixture;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author Christophe Pollet
 */
public class FixtureTransformerFactory implements InitializingBean {
    @SuppressWarnings("MismatchedQueryAndUpdateOfCollection")
    @Autowired
    private List<FixtureTransformer> transformers;

    private Map<Class, FixtureTransformer> transformersMap;

    public FixtureTransformer getFixtureTransformer(TransformableFixture fixture) {
        assertTransformerIsDefined(fixture);

        return transformersMap.get(fixture.getClass());
    }

    private void assertTransformerIsDefined(TransformableFixture fixture) {
        if (!transformersMap.containsKey(fixture.getClass())) {
            throw new RuntimeException("No fixture transformer defined for " + fixture.getClass().getName());
        }
    }

    public FixtureTransformer getFixtureTransformer(@SuppressWarnings("unused") Fixture fixture) {
        return transformersMap.get(Fixture.class);
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        transformersMap = new HashMap<Class, FixtureTransformer>();

        if (null != transformers) {
            for (FixtureTransformer fixtureTransformer : transformers) {
                transformersMap.put(fixtureTransformer.getFromType(), fixtureTransformer);
            }
        }

        transformersMap.put(FIXTURE_TRANSFORMER.getFromType(), FIXTURE_TRANSFORMER);
    }

    private static final FixtureTransformer FIXTURE_TRANSFORMER = new FixtureTransformer<Fixture, Fixture>() {
        @Override
        public Class getFromType() {
            return Fixture.class;
        }

        @Override
        public Fixture transform(Fixture fixture) {
            return fixture;
        }
    };
}