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/*
* Copyright © 2018 European Support Limited
*
* 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 org.onap.sdc.workflow.services.utilities;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonIOException;
import com.google.gson.JsonSyntaxException;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringReader;
public class JsonUtil {
private static final Gson gson = new Gson();
private JsonUtil() {
}
/**
* Object 2 json string.
*
* @param obj the obj
* @return the string
*/
public static String object2Json(Object obj) {
return sbObject2Json(obj).toString();
}
/**
* Sb object 2 json string builder.
*
* @param obj the obj
* @return the string builder
*/
public static StringBuilder sbObject2Json(Object obj) {
return new StringBuilder(new GsonBuilder().setPrettyPrinting().create().toJson(obj));
}
/**
* Json 2 object t.
*
* @param <T> the type parameter
* @param json the json
* @param classOfT the class of t
* @return the t
*/
public static <T> T json2Object(String json, Class<T> classOfT) {
T typ;
try {
try (Reader br = new StringReader(json)) {
typ = gson.fromJson(br, classOfT);
}
} catch (JsonIOException | JsonSyntaxException | IOException exception) {
throw new RuntimeException(exception);
}
return typ;
}
/**
* Json 2 object t.
*
* @param <T> the type parameter
* @param is the is
* @param classOfT the class of t
* @return the t
*/
public static <T> T json2Object(InputStream is, Class<T> classOfT) {
T type;
try (Reader br = new BufferedReader(new InputStreamReader(is))) {
type = new Gson().fromJson(br, classOfT);
} catch (JsonIOException | JsonSyntaxException | IOException exception) {
throw new RuntimeException(exception);
}
return type;
}
}
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