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Vaadin 7 compatibility package for Vaadin 8
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/*
 * Copyright (C) 2000-2024 Vaadin Ltd
 *
 * This program is available under Vaadin Commercial License and Service Terms.
 *
 * See  for the full
 * license.
 */

package com.vaadin.v7.data.util.converter;

import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Date;
import java.util.logging.Logger;

import com.vaadin.server.VaadinSession;

/**
 * Default implementation of {@link ConverterFactory}. Provides converters for
 * standard types like {@link String}, {@link Double} and {@link Date}.
 * 
 * Custom converters can be provided by extending this class and using
 * {@link VaadinSession#setConverterFactory(Object)}.
 * 
 *
 * @author Vaadin Ltd
 * @since 7.0
 *
 * @deprecated As of 8.0, no replacement available.
 */
@Deprecated
public class DefaultConverterFactory implements ConverterFactory {

    private static final Logger LOG = Logger
            .getLogger(DefaultConverterFactory.class.getName());

    @Override
    public  Converter createConverter(
            Class presentationType, Class modelType) {
        Converter converter = findConverter(
                presentationType, modelType);
        if (converter != null) {
            LOG.finest(getClass().getName() + " created a "
                    + converter.getClass());
            return converter;
        }

        // Try to find a reverse converter
        Converter reverseConverter = findConverter(
                modelType, presentationType);
        if (reverseConverter != null) {
            LOG.finest(getClass().getName() + " created a reverse "
                    + reverseConverter.getClass());
            return new ReverseConverter(reverseConverter);
        }

        LOG.finest(getClass().getName() + " could not find a converter for "
                + presentationType.getName() + " to " + modelType.getName()
                + " conversion");
        return null;

    }

    protected  Converter findConverter(
            Class presentationType, Class modelType) {
        if (presentationType == String.class) {
            // TextField converters and more
            Converter converter = (Converter) createStringConverter(
                    modelType);
            if (converter != null) {
                return converter;
            }
        } else if (presentationType == Date.class) {
            // DateField converters and more
            Converter converter = (Converter) createDateConverter(
                    modelType);
            if (converter != null) {
                return converter;
            }
        }

        return null;

    }

    protected Converter createDateConverter(Class sourceType) {
        if (Long.class.isAssignableFrom(sourceType)) {
            return new DateToLongConverter();
        } else if (java.sql.Date.class.isAssignableFrom(sourceType)) {
            return new DateToSqlDateConverter();
        } else {
            return null;
        }
    }

    protected Converter createStringConverter(Class sourceType) {
        if (Double.class.isAssignableFrom(sourceType)) {
            return new StringToDoubleConverter();
        } else if (Float.class.isAssignableFrom(sourceType)) {
            return new StringToFloatConverter();
        } else if (Integer.class.isAssignableFrom(sourceType)) {
            return new StringToIntegerConverter();
        } else if (Long.class.isAssignableFrom(sourceType)) {
            return new StringToLongConverter();
        } else if (BigDecimal.class.isAssignableFrom(sourceType)) {
            return new StringToBigDecimalConverter();
        } else if (Boolean.class.isAssignableFrom(sourceType)) {
            return new StringToBooleanConverter();
        } else if (Date.class.isAssignableFrom(sourceType)) {
            return new StringToDateConverter();
        } else if (Enum.class.isAssignableFrom(sourceType)) {
            return new StringToEnumConverter();
        } else if (BigInteger.class.isAssignableFrom(sourceType)) {
            return new StringToBigIntegerConverter();
        } else if (Short.class.isAssignableFrom(sourceType)) {
            return new StringToShortConverter();
        } else if (Byte.class.isAssignableFrom(sourceType)) {
            return new StringToByteConverter();
        } else {
            return null;
        }
    }

}