org.eclipse.osbp.vaaclipse.addons.app/src/org/eclipse/osbp/vaaclipse/addons/app/converter/VaaclipseByteArrayConverter.java

package org.eclipse.osbp.vaaclipse.addons.app.converter;

import java.util.Base64;
import java.util.Locale;

import com.vaadin.data.util.converter.Converter;

@SuppressWarnings("serial")
public class VaaclipseByteArrayConverter implements Converter<String, byte[]> {


	/*
	 * (non-Javadoc)
	 *
	 * @see
	 * com.vaadin.data.util.converter.Converter#convertToModel(java.lang.Object,
	 * java.lang.Class, java.util.Locale)
	 */
	@Override
	public byte[] convertToModel(String value, Class<? extends byte[]> targetType, Locale locale)
			throws com.vaadin.data.util.converter.Converter.ConversionException {
		if (targetType != getModelType()) {
			throw new ConversionException("Converter only supports " + getModelType().getName() + " (targetType was "
					+ targetType.getName() + ")");
		}

		if (value == null) {
			return null;
		}

		// Remove leading and trailing white space
		value = value.trim();

		return Base64.getEncoder().encode(value.getBytes());
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see
	 * com.vaadin.data.util.converter.Converter#convertToPresentation(java.lang
	 * .Object, java.lang.Class, java.util.Locale)
	 */
	@Override
	public String convertToPresentation(byte[] value, Class<? extends String> targetType, Locale locale)
			throws com.vaadin.data.util.converter.Converter.ConversionException {
		if (value == null) {
			return null;
		}
		
		return new String(Base64.getDecoder().decode(value));
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see com.vaadin.data.util.converter.Converter#getModelType()
	 */
	@Override
	public Class<byte[]> getModelType() {
		return byte[].class;
	}

	/*
	 * (non-Javadoc)
	 *
	 * @see com.vaadin.data.util.converter.Converter#getPresentationType()
	 */
	@Override
	public Class<String> getPresentationType() {
		return String.class;
	}

}