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

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Here is the source code for org.emfjson.jackson.databind.deser.EMFDeserializers.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.jackson.databind.deser;

import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.Deserializers;
import com.fasterxml.jackson.databind.jsontype.TypeDeserializer;
import com.fasterxml.jackson.databind.type.CollectionType;
import com.fasterxml.jackson.databind.type.MapLikeType;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.common.util.EMap;
import org.eclipse.emf.common.util.Enumerator;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.emfjson.jackson.databind.property.EObjectPropertyMap;
import org.emfjson.jackson.databind.type.EcoreType;
import org.emfjson.jackson.module.EMFModule;

import java.util.Map;

public class EMFDeserializers extends Deserializers.Base {

    private final EObjectPropertyMap.Builder builder;
    private final ResourceDeserializer _resourceDeserializer;
    private final JsonDeserializer<EList<Map.Entry<?, ?>>> _mapDeserializer;
    private final JsonDeserializer<Object> _dataTypeDeserializer;
    private final JsonDeserializer<ReferenceEntry> _referenceDeserializer;

    public EMFDeserializers(EMFModule module) {
        this.builder = new EObjectPropertyMap.Builder(module.getIdentityInfo(), module.getTypeInfo(),
                module.getReferenceInfo(), module.getFeatures());
        this._resourceDeserializer = new ResourceDeserializer(module.getUriHandler());
        this._referenceDeserializer = module.getReferenceInfo().getDeserializer();
        this._mapDeserializer = new EMapDeserializer();
        this._dataTypeDeserializer = new EDataTypeDeserializer();
    }

    @Override
    public JsonDeserializer<?> findMapLikeDeserializer(MapLikeType type, DeserializationConfig config,
            BeanDescription beanDesc, KeyDeserializer keyDeserializer, TypeDeserializer elementTypeDeserializer,
            JsonDeserializer<?> elementDeserializer) throws JsonMappingException {
        if (type.isTypeOrSubTypeOf(EMap.class)) {
            return _mapDeserializer;
        }

        return super.findMapLikeDeserializer(type, config, beanDesc, keyDeserializer, elementTypeDeserializer,
                elementDeserializer);
    }

    @Override
    public JsonDeserializer<?> findEnumDeserializer(Class<?> type, DeserializationConfig config,
            BeanDescription beanDesc) throws JsonMappingException {
        if (Enumerator.class.isAssignableFrom(type)) {
            return _dataTypeDeserializer;
        }

        return super.findEnumDeserializer(type, config, beanDesc);
    }

    @Override
    public JsonDeserializer<?> findCollectionDeserializer(CollectionType type, DeserializationConfig config,
            BeanDescription beanDesc, TypeDeserializer elementTypeDeserializer,
            JsonDeserializer<?> elementDeserializer) throws JsonMappingException {
        return super.findCollectionDeserializer(type, config, beanDesc, elementTypeDeserializer,
                elementDeserializer);
    }

    @Override
    public JsonDeserializer<?> findBeanDeserializer(JavaType type, DeserializationConfig config,
            BeanDescription beanDesc) throws JsonMappingException {
        if (type.isTypeOrSubTypeOf(Resource.class)) {
            return _resourceDeserializer;
        }

        if (type.isReferenceType()) {
            return _referenceDeserializer;
        }

        if (type.isTypeOrSubTypeOf(EcoreType.DataType.class)) {
            return _dataTypeDeserializer;
        }

        if (type.isTypeOrSubTypeOf(EObject.class)) {
            return new EObjectDeserializer(builder);
        }

        return super.findBeanDeserializer(type, config, beanDesc);
    }
}