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package com.jd.httpservice.agent;

import org.springframework.beans.BeanUtils;

import com.jd.httpservice.StringConverter;
import com.jd.httpservice.converters.ObjectToStringConverter;

abstract class StringConverterFactory {
	
	public static final StringConverter DEFAULT_PARAM_CONVERTER = new ObjectToStringConverter();
	
	public static StringConverter instantiateStringConverter(Class converterClazz) {
		StringConverter converter = null;
		if (converterClazz != null) {
			if (!StringConverter.class.isAssignableFrom(converterClazz)) {
				throw new IllegalHttpServiceDefinitionException(
						"The specified converter of path param doesn't implement the interface "
								+ StringConverter.class.getName() + "!");
			}

			converter = (StringConverter) BeanUtils.instantiate(converterClazz);
		} else {
			// create default converter;
			converter = DEFAULT_PARAM_CONVERTER;
		}
		return converter;
	}
}