com.hollowsoft.library.utility.utility.JsonParser.java Source code

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Here is the source code for com.hollowsoft.library.utility.utility.JsonParser.java

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/*
 * Copyright (c) 2014 HollowSoft @IgorMorais
 *
 * 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.hollowsoft.library.utility.utility;

import java.io.IOException;
import java.io.InputStream;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * @author Igor Morais
 * @author mor41s.1gor@gmail.com
 */
public final class JsonParser {

    /**
     * Default private constructor.
     */
    private JsonParser() {

    }

    /**
     *
     * @param entity
     * @return
     * @throws JsonProcessingException
     */
    public static <T> String toJson(final T entity) throws JsonProcessingException {
        if (entity == null) {
            throw new IllegalArgumentException("The entity cannot be null.");
        }

        return new ObjectMapper().writer().writeValueAsString(entity);
    }

    /**
     *
     * @param json
     * @return
     * @throws JsonProcessingException
     * @throws IOException
     */
    public static <T> JsonNode toJsonNode(final String json) throws JsonProcessingException, IOException {
        if (json == null) {
            throw new IllegalArgumentException("The json cannot be null.");
        }

        return new ObjectMapper().reader().readTree(json);
    }

    /**
     *
     * @param inputStream
     * @return
     * @throws JsonProcessingException
     * @throws IOException
     */
    public static <T> JsonNode toJsonNode(final InputStream inputStream)
            throws JsonProcessingException, IOException {

        if (inputStream == null) {
            throw new IllegalArgumentException("The inputStream cannot be null.");
        }

        return new ObjectMapper().reader().readTree(inputStream);
    }

    /**
     *
     * @param entity
     * @return
     */
    public static <T> JsonNode toJsonNode(final T entity) {
        if (entity == null) {
            throw new IllegalArgumentException("The entity cannot be null.");
        }

        return new ObjectMapper().valueToTree(entity);
    }

    /**
     *
     * @param json
     * @return
     * @throws JsonProcessingException
     * @throws IOException
     */
    public static <T> T toObject(final String json) throws JsonProcessingException, IOException {
        if (json == null) {
            throw new IllegalArgumentException("The inputStream cannot be null.");
        }

        return new ObjectMapper().reader().readValue(json);
    }

    /**
     *
     * @param inputStream
     * @return
     * @throws JsonProcessingException
     * @throws IOException
     */
    public static <T> T toObject(final InputStream inputStream) throws JsonProcessingException, IOException {
        if (inputStream == null) {
            throw new IllegalArgumentException("The inputStream cannot be null.");
        }

        return new ObjectMapper().reader().readValue(inputStream);
    }

    /**
     *
     * @param jsonNode
     * @return
     * @throws JsonProcessingException
     * @throws IOException
     */
    public static <T> T toObject(final JsonNode jsonNode) throws JsonProcessingException, IOException {
        if (jsonNode == null) {
            throw new IllegalArgumentException("The jsonNode cannot be null.");
        }

        return new ObjectMapper().reader().readValue(jsonNode);
    }

    /**
     *
     * @param jsonParser
     * @return
     * @throws JsonProcessingException
     * @throws IOException
     */
    public static <T> T toObject(final com.fasterxml.jackson.core.JsonParser jsonParser)
            throws JsonProcessingException, IOException {

        if (jsonParser == null) {
            throw new IllegalArgumentException("The jsonParser cannot be null.");
        }

        return new ObjectMapper().reader().readValue(jsonParser);
    }
}