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/*
* ===============================LICENSE_START======================================
* dcae-analytics
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============================LICENSE_END===========================================
*/
package org.openecomp.dcae.apod.analytics.model.util;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.base.Suppliers;
import org.openecomp.dcae.apod.analytics.model.util.json.AnalyticsModelObjectMapperSupplier;
import java.io.IOException;
import java.io.InputStream;
/**
*
* @author Rajiv Singla . Creation Date: 11/7/2016.
*/
public abstract class AnalyticsModelJsonUtils {
/**
* Object mapper to be used for all TCA Json Parsing
*/
protected static final ObjectMapper ANALYTICS_MODEL_OBJECT_MAPPER =
Suppliers.memoize(new AnalyticsModelObjectMapperSupplier()).get();
/**
* Converts Input Stream to given type reference object
*
* @param inputStream input stream
* @param valueTypeRef type reference
* @param <T> type of type reference
*
* @return parsed json object
*
* @throws IOException IO Exception
*/
public static <T> T readValue(InputStream inputStream, TypeReference<T> valueTypeRef) throws IOException {
return ANALYTICS_MODEL_OBJECT_MAPPER.readValue(inputStream, valueTypeRef);
}
/**
* Converts Input Stream to given target class object
*
* @param inputStream input stream
* @param targetClass target class type
* @param <T> type of class
*
* @return parsed json object
*
* @throws IOException IO Exception
*/
public static <T> T readValue(InputStream inputStream, Class<T> targetClass) throws IOException {
return ANALYTICS_MODEL_OBJECT_MAPPER.readValue(inputStream, targetClass);
}
/**
* Converts given object to JSON string
*
* @param value object that needs to converted to json string
*
* @return json string
* @throws JsonProcessingException Json Processing exception
*/
public static String writeValueAsString(Object value) throws JsonProcessingException {
return ANALYTICS_MODEL_OBJECT_MAPPER.writeValueAsString(value);
}
/**
* Method to deserialize JSON content from given JSON content String.
*
* @param jsonString JSON String
* @param objectClass target object class
* @param <T> object class type
*
* @return converted Object from JSON String
*
* @throws IOException IO Exception
*/
public static <T> T readValue(final String jsonString, final Class<T> objectClass) throws IOException {
return ANALYTICS_MODEL_OBJECT_MAPPER.readValue(jsonString, objectClass);
}
}
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