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ObServe Toolkit Common Dto module
package fr.ird.observe.gson.reference;
/*
* #%L
* ObServe Toolkit :: Common Dto
* %%
* Copyright (C) 2017 - 2020 IRD, Ultreia.io
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program. If not, see
* .
* #L%
*/
import com.google.gson.JsonArray;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import fr.ird.observe.dto.reference.DtoReference;
import fr.ird.observe.dto.reference.DtoReferenceCollection;
import fr.ird.observe.dto.reference.DtoReferenceDefinition;
import java.lang.reflect.Type;
import java.util.LinkedList;
import java.util.List;
/**
* Note: Pour une référence, on ne sérialize pas les méta-données (noms et types des propriétés), on les récupère à la
* désérialisation via {@link DtoReferenceDefinition}.
*
* @author Tony Chemit - [email protected]
*/
public abstract class ReferenceCollectionSupportAdapter> implements JsonDeserializer {
@Override
public final S deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
JsonObject jsonObject = json.getAsJsonObject();
Class referenceType = context.deserialize(jsonObject.get(DtoReferenceCollection.PROPERTY_TYPE), Class.class);
JsonArray jsonPropertyValues = jsonObject.get(DtoReferenceCollection.PROPERTY_REFERENCES).getAsJsonArray();
int referencesSize = jsonPropertyValues.size();
List references = new LinkedList<>();
for (int i = 0; i < referencesSize; i++) {
R reference = context.deserialize(jsonPropertyValues.get(i), referenceType);
references.add(reference);
}
return newReferenceSet(referenceType, references, jsonObject, context);
}
protected abstract S newReferenceSet(Class referenceType, List references, JsonObject jsonObject, JsonDeserializationContext context);
}