org.example.testcases.BasicTypesDeSerializer.java Source code

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Here is the source code for org.example.testcases.BasicTypesDeSerializer.java

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/*
 * The MIT License (MIT)
 * Copyright (c) 2016 Martin W. Kirst
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package org.example.testcases;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonToken;

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

import static com.fasterxml.jackson.core.JsonToken.END_OBJECT;
import static com.fasterxml.jackson.core.JsonToken.FIELD_NAME;

public class BasicTypesDeSerializer {

    private final JsonFactory jsonFactory = new JsonFactory();

    public BasicTypes deserialize(InputStream inputStream) throws IOException {
        try (JsonParser jp = jsonFactory.createParser(inputStream)) {
            return readObject(jp);
        }
    }

    private BasicTypes readObject(JsonParser jp) throws IOException {
        BasicTypes basicTypes = new BasicTypes();
        for (JsonToken jsonToken; (jsonToken = jp.nextToken()) != null && (jsonToken != END_OBJECT);) {
            if (FIELD_NAME != jsonToken)
                continue;
            final String fieldName = jp.getCurrentName();
            switch (fieldName) {
            case "aString":
                jsonToken = jp.nextToken(); // read value
                basicTypes.aString = jp.getText();
                break;
            case "aBoolean":
                jsonToken = jp.nextToken(); // read value
                basicTypes.aBoolean = jp.getBooleanValue();
                break;
            case "aFloat":
                jsonToken = jp.nextToken(); // read value
                basicTypes.aFloat = jp.getFloatValue();
                break;
            case "aDouble":
                jsonToken = jp.nextToken(); // read value
                basicTypes.aDouble = jp.getDoubleValue();
                break;
            case "aInt":
                jsonToken = jp.nextToken(); // read value
                basicTypes.aInt = jp.getIntValue();
                break;
            case "aShort":
                jsonToken = jp.nextToken(); // read value
                basicTypes.aShort = jp.getShortValue();
                break;
            case "aByte":
                jsonToken = jp.nextToken(); // read value
                basicTypes.aByte = jp.getByteValue();
                break;
            default:
                // decide what to do;
            }
        }
        return basicTypes;
    }

}