org.emfjson.gwt.map.ValueSerializer.java Source code

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Here is the source code for org.emfjson.gwt.map.ValueSerializer.java

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/*
 * 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);
    }

}