com.regnosys.rosetta.common.serialisation.JsonDataLoaderUtil Maven / Gradle / Ivy

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Rune Common is a java library that is utilised by Rosetta Code Generators and models expressed in the Rosetta DSL.
There is a newer version: 11.27.1
package com.regnosys.rosetta.common.serialisation;

/*-
 * ==============
 * Rune Common
 * ==============
 * Copyright (C) 2018 - 2024 REGnosys
 * ==============
 * 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.
 * ==============
 */

import com.fasterxml.jackson.databind.ObjectMapper;
import com.regnosys.rosetta.common.util.UrlUtils;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.Reader;
import java.io.UncheckedIOException;
import java.net.URL;
import java.util.List;
import java.util.Optional;

public class JsonDataLoaderUtil {

    public static  U readType(Class type, ObjectMapper rosettaObjectMapper, URL url) {
        try {
            return rosettaObjectMapper.readValue(UrlUtils.openURL(url), type);
        } catch (IOException e) {
            throw new RuntimeException(url + " cannot be serialised to " + type, e);
        }
    }

    public static  U readType(Class type, ObjectMapper rosettaObjectMapper, String json) {
        try {
            return rosettaObjectMapper.readValue(json, type);
        } catch (IOException e) {
            throw new RuntimeException("JSON cannot be serialised to " + type + "[" + json + "]", e);
        }
    }

    public static  List readTypeList(Class type, ObjectMapper rosettaObjectMapper, URL url) {
        try {
            return rosettaObjectMapper.readValue(UrlUtils.openURL(url), rosettaObjectMapper.getTypeFactory().constructCollectionType(List.class, type));
        } catch (IOException e) {
            throw new RuntimeException(url + " cannot be serialised to list of " + type, e);
        }
    }

    public static  List readTypeList(Class type, ObjectMapper rosettaObjectMapper, Reader input) {
        try {
            return rosettaObjectMapper.readValue(input, rosettaObjectMapper.getTypeFactory().constructCollectionType(List.class, type));
        } catch (IOException e) {
            throw new RuntimeException(input + " cannot be serialised to list of " + type, e);
        }
    }

    public static  U fromObject(Object obj, Class type, ObjectMapper rosettaObjectMapper) {
        try {
            return readType(type, rosettaObjectMapper, rosettaObjectMapper.writeValueAsString(obj));
        } catch (IOException e) {
            throw new RuntimeException(obj.getClass() + " cannot be serialised to " + type + "[" + obj.toString() + "]", e);
        }
    }

    public static Optional openURL(URL descriptorUrl) {
        try {
            return Optional.of(UrlUtils.openURL(descriptorUrl));
        } catch (FileNotFoundException e) {
            return Optional.empty();
        } catch (IOException e) {
            throw new UncheckedIOException(e);
        }
    }

    public static Class loadClass(String type, ClassLoader classLoader) {
        try {
            return classLoader.loadClass(type);
        } catch (ClassNotFoundException e) {
            throw new RuntimeException("Could not load class for type " + type);
        }
    }
}