com.ninjas.movietime.conf.vendor.jackson.GuavaExtrasModule.java Source code

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Here is the source code for com.ninjas.movietime.conf.vendor.jackson.GuavaExtrasModule.java

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/*
 * Copyright 2014 Parisian Ninjas
 *
 * Licensed under the MIT License;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://opensource.org/licenses/MIT
 *
 * 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.ninjas.movietime.conf.vendor.jackson;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.Version;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.deser.Deserializers;
import com.google.common.cache.CacheBuilderSpec;

import java.io.IOException;

public class GuavaExtrasModule extends Module {

    private static class CacheBuilderSpecDeserializer extends JsonDeserializer<CacheBuilderSpec> {
        @Override
        public CacheBuilderSpec deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException {
            final String text = jp.getText();
            if ("off".equalsIgnoreCase(text) || "disabled".equalsIgnoreCase(text)) {
                return CacheBuilderSpec.disableCaching();
            }
            return CacheBuilderSpec.parse(text);
        }
    }

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

            return super.findBeanDeserializer(type, config, beanDesc);
        }
    }

    @Override
    public String getModuleName() {
        return "guava-extras";
    }

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

    @Override
    public void setupModule(Module.SetupContext context) {
        context.addDeserializers(new GuavaExtrasDeserializers());
    }
}