EMFStoreResourceHelper.java

/*******************************************************************************
 * Copyright (c) 2011-2013 EclipseSource Muenchen GmbH and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * Edgar Mueller - initial API and implementation
 ******************************************************************************/
package org.eclipse.emf.emfstore.internal.common;

import java.util.Locale;

import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EFactory;
import org.eclipse.emf.ecore.xmi.impl.XMIHelperImpl;

/**
 * Specialized XML Helper that formats float and doubles across
 * different JVM versions alike.
 *
 *
 * @author emueller
 *
 */
public class EMFStoreResourceHelper extends XMIHelperImpl {

	/**
	 * Constructor.
	 *
	 * @param resource
	 *            the EMFStore resource for which to create the helper
	 */
	public EMFStoreResourceHelper(EMFStoreResource resource) {
		super(resource);
	}

	@Override
	public String convertToString(EFactory factory, EDataType dataType, Object value) {
		final Class<?> instanceClass = dataType.getInstanceClass();
		if (instanceClass == float.class
			|| instanceClass == Float.class) {
			return format((Float) value);
		} else if (instanceClass == double.class
			|| instanceClass == Double.class) {
			return format((Double) value);
		}

		return super.convertToString(factory, dataType, value);
	}

	private String format(Float value) {
		return String.format(Locale.US, "%f", value.floatValue()); //$NON-NLS-1$
	}

	private String format(Double value) {
		return String.format(Locale.US, "%f", value.doubleValue()); //$NON-NLS-1$
	}
}