org.emfjson.gwt.map.ValueSerializer Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of emfjson-gwt Show documentation
EMF JSON GWT
The newest version!
/*
 * Copyright (c) 2015 Guillaume Hillairet.
 * 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:
 *     Guillaume Hillairet - initial API and implementation
 *
 */
package org.emfjson.gwt.map;

import com.google.gwt.i18n.client.DateTimeFormat;
import com.google.gwt.json.client.*;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EObject;

import org.eclipse.emf.ecore.util.EcoreUtil;
import org.emfjson.common.EObjects;

import java.util.Collection;
import java.util.Date;

import static org.eclipse.emf.ecore.util.EcoreUtil.convertToString;

public class ValueSerializer {

	public void setOrAdd(EObject owner, EAttribute attribute, JSONValue value) {
		String asString = null;
		JSONString stringValue = value.isString();
		if (stringValue != null) {
			asString = stringValue.stringValue();
		}

		JSONBoolean booleanValue = value.isBoolean();
		if (booleanValue != null) {
			asString = booleanValue.toString();
		}

		JSONNumber numberValue = value.isNumber();
		if (numberValue != null) {
			asString = numberValue.toString();
		}

		if (asString != null) {
			Object converted = EcoreUtil.createFromString(attribute.getEAttributeType(), asString);
			EObjects.setOrAdd(owner, attribute, converted);
		}
	}

	public void serialize(JSONObject node, String key, EAttribute attribute, Object value) {
		final EDataType type = attribute.getEAttributeType();

		if (attribute.isMany()) {
			final Collection values = (Collection) value;
			final JSONArray array = new JSONArray();
			node.put(key, array);

			int i = 0;
			for (Object current : values) {
				serialize(array, i, type, current);
				i++;
			}
		} else {
			serializeValue(node, key, type, value);
		}
	}

	public void serializeValue(JSONObject node, String key, EDataType type, Object value) {
		if (value == null) return;

		if (value instanceof String) {
			node.put(key, new JSONString((String) value));
		} else if (value instanceof Integer) {
			node.put(key, new JSONNumber((Integer) value));
		} else if (value instanceof Boolean) {
			node.put(key, JSONBoolean.getInstance((Boolean) value));
		} else if (value instanceof Date) {
			node.put(key, new JSONString(dateValue((Date) value)));
		} else if (value instanceof Double) {
			node.put(key, new JSONNumber((Double) value));
		} else if (value instanceof Long) {
			node.put(key, new JSONNumber((Long) value));
		} else if (value instanceof Short) {
			node.put(key, new JSONNumber((Short) value));
		} else if (value instanceof Float) {
			node.put(key, new JSONNumber((Float) value));
		} else {
			node.put(key, new JSONString(convertToString(type, value)));
		}
	}

	public void serialize(JSONArray node, int position, EDataType type, Object value) {
		if (value == null) return;

		if (value instanceof String) {
			node.set(position, new JSONString((String) value));
		} else if (value instanceof Integer) {
			node.set(position, new JSONNumber((Integer) value));
		} else if (value instanceof Boolean) {
			node.set(position, JSONBoolean.getInstance((Boolean) value));
		} else if (value instanceof Date) {
			node.set(position, new JSONString(dateValue((Date) value)));
		} else if (value instanceof Double) {
			node.set(position, new JSONNumber((Double) value));
		} else if (value instanceof Long) {
			node.set(position, new JSONNumber((Long) value));
		} else if (value instanceof Short) {
			node.set(position, new JSONNumber((Short) value));
		} else if (value instanceof Float) {
			node.set(position, new JSONNumber((Float) value));
		} else {
			node.set(position, new JSONString(convertToString(type, value)));
		}
	}

	protected String dateValue(Date date) {
		DateTimeFormat formatter = DateTimeFormat.getFormat("yyyy-MM-dd'T'HH:mm:ss");
		return formatter.format(date);
	}

}