org.mayocat.configuration.jackson.NIOModule.java Source code

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Here is the source code for org.mayocat.configuration.jackson.NIOModule.java

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/*
 * Copyright (c) 2012, Mayocat <hello@mayocat.org>
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */
package org.mayocat.configuration.jackson;

import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.Version;
import com.fasterxml.jackson.databind.BeanDescription;
import com.fasterxml.jackson.databind.DeserializationConfig;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JavaType;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.Module;
import com.fasterxml.jackson.databind.deser.Deserializers;

/**
 * Serializer and deserializer related to NIO.
 */
public class NIOModule extends Module {
    private static class PathDeserializer extends JsonDeserializer<Path> {
        @Override
        public Path deserialize(JsonParser jsonParser, DeserializationContext deserializationContext)
                throws IOException, JsonProcessingException {
            return Paths.get(jsonParser.getText());
        }
    }

    private static class NIODeserializers extends Deserializers.Base {
        @Override
        public JsonDeserializer<?> findBeanDeserializer(JavaType type, DeserializationConfig config,
                BeanDescription beanDesc) throws JsonMappingException {
            if (Path.class.isAssignableFrom(type.getRawClass())) {
                return new PathDeserializer();
            }
            return super.findBeanDeserializer(type, config, beanDesc);
        }
    }

    @Override
    public String getModuleName() {
        return "MayocatNIOModule";
    }

    @Override
    public Version version() {
        return Version.unknownVersion();
    }

    @Override
    public void setupModule(Module.SetupContext setupContext) {
        setupContext.addDeserializers(new NIODeserializers());
    }
}