/*
* Copyright 2002-2011 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
*
* 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 org.springframework.context.support;
import java.util.Set;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.core.convert.ConversionService;
import org.springframework.core.convert.support.ConversionServiceFactory;
import org.springframework.core.convert.support.DefaultConversionService;
import org.springframework.core.convert.support.GenericConversionService;
/**
* A factory providing convenient access to a ConversionService configured with
* converters appropriate for most environments. Set the {@link #setConverters
* "converters"} property to supplement the default converters.
*
* <p>This implementation creates a {@link DefaultConversionService}. Subclasses
* may override {@link #createConversionService()} in order to return a
* {@link GenericConversionService} instance of their choosing.
*
* <p>Like all {@code FactoryBean} implementations, this class is suitable for
* use when configuring a Spring application context using Spring {@code <beans>}
* XML. When configuring the container with
* {@link org.springframework.context.annotation.Configuration @Configuration}
* classes, simply instantiate, configure and return the appropriate
* {@code ConversionService} object from a {@link
* org.springframework.context.annotation.Bean @Bean} method.
*
* @author Keith Donald
* @author Juergen Hoeller
* @author Chris Beams
* @since 3.0
*/
public class ConversionServiceFactoryBean implements FactoryBean<ConversionService>, InitializingBean {
private Set<?> converters;
private GenericConversionService conversionService;
/**
* Configure the set of custom converter objects that should be added:
* implementing {@link org.springframework.core.convert.converter.Converter},
* {@link org.springframework.core.convert.converter.ConverterFactory},
* or {@link org.springframework.core.convert.converter.GenericConverter}.
*/
public void setConverters(Set<?> converters) {
this.converters = converters;
}
public void afterPropertiesSet() {
this.conversionService = createConversionService();
ConversionServiceFactory.registerConverters(this.converters, this.conversionService);
}
/**
* Create the ConversionService instance returned by this factory bean.
* <p>Creates a simple {@link GenericConversionService} instance by default.
* Subclasses may override to customize the ConversionService instance that
* gets created.
*/
protected GenericConversionService createConversionService() {
return new DefaultConversionService();
}
// implementing FactoryBean
public ConversionService getObject() {
return this.conversionService;
}
public Class<? extends ConversionService> getObjectType() {
return GenericConversionService.class;
}
public boolean isSingleton() {
return true;
}
}