/*
* 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.databind.EMFContext;
import java.io.IOException;
import java.util.Collection;
public class CollectionDeserializer extends JsonDeserializer<Collection<Object>> {
private final JsonDeserializer<? extends EObject> deserializer;
private final JsonDeserializer<? extends ReferenceEntry> referenceDeserializer;
public CollectionDeserializer(
JsonDeserializer<? extends EObject> deserializer,
JsonDeserializer<ReferenceEntry> referenceDeserializer) {
this.deserializer = deserializer;
this.referenceDeserializer = referenceDeserializer;
}
@Override
public Collection<Object> deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public Collection<Object> deserialize(JsonParser p, DeserializationContext ctxt, Collection<Object> intoValue) throws IOException {
final EObject parent = EMFContext.getParent(ctxt);
final EReference feature = EMFContext.getReference(ctxt);
while (p.nextToken() != JsonToken.END_ARRAY) {
EMFContext.setParent(ctxt, parent);
EMFContext.setFeature(ctxt, feature);
if (feature != null && feature.isContainment()) {
EObject result = deserializer.deserialize(p, ctxt);
if (result != null) {
intoValue.add(result);
}
} else {
ReferenceEntry entry = referenceDeserializer.deserialize(p, ctxt);
if (entry != null) {
intoValue.add(entry);
}
}
}
return intoValue;
}
}