natalia.dymnikova.util.AutowireHelper.java Source code

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Here is the source code for natalia.dymnikova.util.AutowireHelper.java

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// Copyright (c) 2016 Natalia Dymnikova
// Available via the MIT license
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
// documentation files (the "Software"), to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
// and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
// CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
// OR OTHER DEALINGS IN THE SOFTWARE.

package natalia.dymnikova.util;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.stereotype.Component;

import java.util.function.Supplier;

import static org.springframework.beans.factory.config.AutowireCapableBeanFactory.AUTOWIRE_BY_TYPE;

@Component
public class AutowireHelper {

    @Autowired
    private ApplicationContext context;

    public <T> T autowire(final T object) {
        final AutowireCapableBeanFactory beanFactory = context.getAutowireCapableBeanFactory();
        beanFactory.autowireBeanProperties(object, AUTOWIRE_BY_TYPE, false);
        return (T) beanFactory.initializeBean(object, object.getClass().getName());
    }

    public <T> AutowiringSupplier<T> wrap(final Supplier<T> supplier) {
        return new AutowiringSupplier<>(supplier);
    }

    public class AutowiringSupplier<T> implements Supplier<T> {
        private final Supplier<T> supplier;

        public AutowiringSupplier(Supplier<T> supplier) {
            this.supplier = supplier;
        }

        @Override
        public T get() {
            return autowire(supplier.get());
        }
    }
}