net.sf.andromedaioc.bean.converter.ConverterFactory Maven / Gradle / Ivy

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Inversion of Control Framework for Android
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package net.sf.andromedaioc.bean.converter;

import net.sf.andromedaioc.bean.converter.fromboolean.FromBooleanConverterFactory;
import net.sf.andromedaioc.bean.converter.fromnumber.FromNumberConverterFactory;
import net.sf.andromedaioc.bean.converter.fromstring.FromStringConverterFactory;

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

/**
 * Converter factory
 *
 * @author Alexey Mitrov
 */
public class ConverterFactory {

    private final static TransparentConverter TRANSPARENT_CONVERTER = new TransparentConverter();

    private final static Map, FromConverterFactory> fromConverterFactories;
    static {
        fromConverterFactories = new HashMap, FromConverterFactory>();
        fromConverterFactories.put(Boolean.class, new FromBooleanConverterFactory());
        FromNumberConverterFactory fromNumberConverterFactory = new FromNumberConverterFactory();
        fromConverterFactories.put(Byte.class, fromNumberConverterFactory);
        fromConverterFactories.put(byte.class, fromNumberConverterFactory);
        fromConverterFactories.put(Short.class, fromNumberConverterFactory);
        fromConverterFactories.put(short.class, fromNumberConverterFactory);
        fromConverterFactories.put(Integer.class, fromNumberConverterFactory);
        fromConverterFactories.put(int.class, fromNumberConverterFactory);
        fromConverterFactories.put(Long.class, fromNumberConverterFactory);
        fromConverterFactories.put(long.class, fromNumberConverterFactory);
        fromConverterFactories.put(Float.class, fromNumberConverterFactory);
        fromConverterFactories.put(float.class, fromNumberConverterFactory);
        fromConverterFactories.put(Double.class, fromNumberConverterFactory);
        fromConverterFactories.put(double.class, fromNumberConverterFactory);
        fromConverterFactories.put(String.class, new FromStringConverterFactory());
    }

    /**
     * Get converter to convert value of fromType to toType
     * @param fromType
     * @param toType
     * @param 
     * @param 
     * @return converter to convert value of fromType to toType
     */
    public static  Converter getConverter(Class fromType, Class toType) {
        if(fromType == null || toType == null || fromType.equals(toType)) {
            return (Converter) TRANSPARENT_CONVERTER;
        }
        FromConverterFactory fromConverterFactory = fromConverterFactories.get(fromType);
        if(fromConverterFactory == null) {
            return (Converter) TRANSPARENT_CONVERTER;
        }
        Converter converter = fromConverterFactory.getConverter(toType);
        if(converter == null) {
            return (Converter) TRANSPARENT_CONVERTER;
        }
        return converter;
    }

}