org.springframework.core.convert.support.ConversionServiceFactory.java Source code

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Here is the source code for org.springframework.core.convert.support.ConversionServiceFactory.java

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/*
 * Copyright 2002-2018 the original author or authors.
 *
 * 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
 *
 *      https://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 org.springframework.core.convert.support;

import java.util.Set;

import org.springframework.core.convert.converter.Converter;
import org.springframework.core.convert.converter.ConverterFactory;
import org.springframework.core.convert.converter.ConverterRegistry;
import org.springframework.core.convert.converter.GenericConverter;
import org.springframework.lang.Nullable;

/**
 * A factory for common {@link org.springframework.core.convert.ConversionService}
 * configurations.
 *
 * @author Keith Donald
 * @author Juergen Hoeller
 * @author Chris Beams
 * @since 3.0
 */
public final class ConversionServiceFactory {

    private ConversionServiceFactory() {
    }

    /**
     * Register the given Converter objects with the given target ConverterRegistry.
     * @param converters the converter objects: implementing {@link Converter},
     * {@link ConverterFactory}, or {@link GenericConverter}
     * @param registry the target registry
     */
    public static void registerConverters(@Nullable Set<?> converters, ConverterRegistry registry) {
        if (converters != null) {
            for (Object converter : converters) {
                if (converter instanceof GenericConverter) {
                    registry.addConverter((GenericConverter) converter);
                } else if (converter instanceof Converter<?, ?>) {
                    registry.addConverter((Converter<?, ?>) converter);
                } else if (converter instanceof ConverterFactory<?, ?>) {
                    registry.addConverterFactory((ConverterFactory<?, ?>) converter);
                } else {
                    throw new IllegalArgumentException("Each converter object must implement one of the "
                            + "Converter, ConverterFactory, or GenericConverter interfaces");
                }
            }
        }
    }

}