io.victoralbertos.jolyglot.JacksonSpeaker.java Source code

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Here is the source code for io.victoralbertos.jolyglot.JacksonSpeaker.java

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/*
 * Copyright 2016 Victor Albertos
 *
 * 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 io.victoralbertos.jolyglot;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.File;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

/**
 * Jackson implementation of Jolyglot
 */
public class JacksonSpeaker implements JolyglotGenerics {
    private final ObjectMapper mapper;

    public JacksonSpeaker(ObjectMapper mapper) {
        this.mapper = mapper;
    }

    public JacksonSpeaker() {
        this.mapper = new ObjectMapper();
        this.mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String toJson(Object src) {
        try {
            return mapper.writeValueAsString(src);
        } catch (JsonProcessingException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String toJson(Object src, Type typeOfSrc) {
        try {
            String json = mapper.writeValueAsString(src);
            return json;
        } catch (JsonProcessingException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public <T> T fromJson(String json, Class<T> classOfT) throws RuntimeException {
        try {
            return mapper.readValue(json, classOfT);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public <T> T fromJson(String json, final Type typeOfT) throws RuntimeException {
        try {
            TypeReference<T> referenceType = new TypeReference<T>() {
                @Override
                public Type getType() {
                    return typeOfT;
                }
            };
            return mapper.readValue(json, referenceType);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public <T> T fromJson(File file, Class<T> classOfT) throws RuntimeException {
        try {
            return mapper.readValue(file, classOfT);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public <T> T fromJson(File file, final Type typeOfT) throws RuntimeException {
        try {
            TypeReference<T> referenceType = new TypeReference<T>() {
                @Override
                public Type getType() {
                    return typeOfT;
                }
            };
            T object = mapper.readValue(file, referenceType);
            return object;
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public GenericArrayType arrayOf(Type componentType) {
        return Types.arrayOf(componentType);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public ParameterizedType newParameterizedType(Type rawType, Type... typeArguments) {
        return Types.newParameterizedType(rawType, typeArguments);
    }

}