com.holonplatform.vaadin7.internal.converters.NumberToNumberConverter Maven / Gradle / Ivy

/*
 * Copyright 2016-2017 Axioma srl.
 * 
 * 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 com.holonplatform.vaadin7.internal.converters;

import java.util.Locale;

import com.holonplatform.core.internal.utils.ConversionUtils;
import com.vaadin.data.util.converter.Converter;

/**
 * A {@link Converter}s that convert from a {@link Number} types to another {@link Number} type and back.
 * 
 * @param  Presentation type
 * @param  Model type
 *
 * @since 5.0.0
 */
public class NumberToNumberConverter
		implements Converter {

	private static final long serialVersionUID = 3540797381624942323L;

	private final Class presentationType;
	private final Class modelType;

	/**
	 * Constructor
	 * @param presentationType Presentation Number type
	 * @param modelType Model Number type
	 */
	public NumberToNumberConverter(Class presentationType, Class modelType) {
		super();
		this.presentationType = presentationType;
		this.modelType = modelType;
	}

	/*
	 * (non-Javadoc)
	 * @see com.vaadin.data.util.converter.Converter#convertToModel(java.lang.Object, java.lang.Class, java.util.Locale)
	 */
	@Override
	public MODEL convertToModel(PRESENTATION value, Class targetType, Locale locale)
			throws ConversionException {
		if (value != null) {
			return ConversionUtils.convertNumberToTargetClass(value, targetType);
		}
		return null;
	}

	/*
	 * (non-Javadoc)
	 * @see com.vaadin.data.util.converter.Converter#convertToPresentation(java.lang.Object, java.lang.Class,
	 * java.util.Locale)
	 */
	@Override
	public PRESENTATION convertToPresentation(MODEL value, Class targetType, Locale locale)
			throws ConversionException {
		if (value != null) {
			return ConversionUtils.convertNumberToTargetClass(value, targetType);
		}
		return null;
	}

	/*
	 * (non-Javadoc)
	 * @see com.vaadin.data.util.converter.Converter#getModelType()
	 */
	@SuppressWarnings("unchecked")
	@Override
	public Class getModelType() {
		return (Class) modelType;
	}

	/*
	 * (non-Javadoc)
	 * @see com.vaadin.data.util.converter.Converter#getPresentationType()
	 */
	@SuppressWarnings("unchecked")
	@Override
	public Class getPresentationType() {
		return (Class) presentationType;
	}

}