org.emfjson.jackson.databind.deser.EcoreReferenceDeserializer.java Source code

Introduction

Here is the source code for org.emfjson.jackson.databind.deser.EcoreReferenceDeserializer.java

Source

/*
 * 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.jackson.databind.deser;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.emfjson.jackson.annotations.EcoreReferenceInfo;
import org.emfjson.jackson.databind.EMFContext;

import java.io.IOException;

public class EcoreReferenceDeserializer extends JsonDeserializer<ReferenceEntry> {

    private final EcoreReferenceInfo.Base info;

    public EcoreReferenceDeserializer(EcoreReferenceInfo.Base info) {
        this.info = info;
    }

    @Override
    public ReferenceEntry deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
        EObject parent = EMFContext.getParent(ctxt);
        EReference reference = EMFContext.getReference(ctxt);

        String id = null;
        String type = null;

        while (jp.nextToken() != JsonToken.END_OBJECT) {
            final String field = jp.getCurrentName();

            if (field.equalsIgnoreCase(info.getProperty())) {
                id = jp.nextTextValue();
            } else if (field.equalsIgnoreCase(info.getTypeProperty())) {
                type = jp.nextTextValue();
            }
        }

        return id != null ? new ReferenceEntry.Base(parent, reference, id, type) : null;
    }

}