verigraph/src/it/polito/verigraph/serializer/CustomMapSerializer.java


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/*******************************************************************************
 * Copyright (c) 2017 Politecnico di Torino and others.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Apache License, Version 2.0
 * which accompanies this distribution, and is available at
 * http://www.apache.org/licenses/LICENSE-2.0
 *******************************************************************************/
package it.polito.verigraph.serializer;

import java.io.IOException;
import java.util.Map;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import it.polito.verigraph.exception.InternalServerErrorException;

public class CustomMapSerializer extends JsonSerializer<Map<?, ?>> {
    @Override
    public void serialize(final Map<?, ?> value, final JsonGenerator jgen, final SerializerProvider provider) {
        try {
            jgen.writeObject(value.values());
        } catch (IOException e) {
            throw new InternalServerErrorException("I/O error serializing a map: " + e.getMessage());
        }
    }
}