com.sg2net.utilities.ListaCAP.json.JsonUtilties.java Source code

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Here is the source code for com.sg2net.utilities.ListaCAP.json.JsonUtilties.java

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/*
 *  Copyright 2012 Giovanni Cuccu
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package com.sg2net.utilities.ListaCAP.json;

import java.io.File;
import java.io.IOException;
import java.util.Collection;
import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.fasterxml.jackson.core.Version;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.sg2net.utilities.ListaCAP.Comune;

public class JsonUtilties {
    private static Logger logger = LoggerFactory.getLogger(JsonUtilties.class);
    private static ObjectMapper JSONMapper = new ObjectMapper();
    static {
        SimpleModule module = new SimpleModule("ComuneDeserializerModule",
                new Version(1, 0, 0, "Comune", "comune", "comune"));
        module.addDeserializer(Comune.class, new ComuneDeserializer());
        JSONMapper.registerModule(module);
    }

    private JsonUtilties() {
    }

    public static void serializeTo(Collection<Comune> comuni, File file) {
        try {
            JSONMapper.writeValue(file, comuni);
        } catch (IOException e) {
            logger.error(e.getMessage(), e);
            throw new RuntimeException(e.getMessage(), e);
        }
    }

    public static Collection<Comune> deserializeFrom(File file) {
        if (file == null) {
            throw new IllegalArgumentException("File is null");
        }
        if (!file.exists() || file.isDirectory() || !file.canRead()) {
            throw new IllegalArgumentException("File " + file.getName() + " is not file or is not readable ");
        }
        try {
            return JSONMapper.readValue(file, new TypeReference<List<Comune>>() {
            });
        } catch (IOException e) {
            logger.error(e.getMessage(), e);
            throw new RuntimeException(e.getMessage(), e);
        }
    }
}