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Eclipse Yasson. Reference implementation of JSR-367 (JSON-B).
There is a newer version: 3.0.4
/*
 * Copyright (c) 2016, 2022 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 */

package org.eclipse.yasson.internal;

import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.ServiceLoader;
import java.util.logging.Logger;

import jakarta.json.bind.JsonbConfig;
import jakarta.json.bind.JsonbException;
import jakarta.json.spi.JsonProvider;
import jakarta.json.stream.JsonGenerator;
import jakarta.json.stream.JsonParserFactory;

import org.eclipse.yasson.internal.components.JsonbComponentInstanceCreatorFactory;
import org.eclipse.yasson.internal.deserializer.DeserializationModelCreator;
import org.eclipse.yasson.internal.properties.MessageKeys;
import org.eclipse.yasson.internal.properties.Messages;
import org.eclipse.yasson.internal.serializer.SerializationModelCreator;
import org.eclipse.yasson.spi.JsonbComponentInstanceCreator;

/**
 * Jsonb context holding central components and configuration of jsonb runtime. Scoped to instance of Jsonb runtime.
 */
public class JsonbContext {

    private static final Logger LOGGER = Logger.getLogger(JsonbContext.class.getName());

    private final JsonbConfig jsonbConfig;

    private final MappingContext mappingContext;

    private final DeserializationModelCreator deserializationModelCreator;

    private final SerializationModelCreator serializationModelCreator;

    private final JsonbComponentInstanceCreator componentInstanceCreator;

    private final JsonProvider jsonProvider;

    private final JsonParserFactory jsonParserFactory;

    private final ComponentMatcher componentMatcher;

    private final AnnotationIntrospector annotationIntrospector;

    private final JsonbConfigProperties configProperties;

    /**
     * Creates and initialize context.
     *
     * @param jsonbConfig  jsonb jsonbConfig not null
     * @param jsonProvider provider of JSONP
     */
    public JsonbContext(JsonbConfig jsonbConfig, JsonProvider jsonProvider) {
        Objects.requireNonNull(jsonbConfig);
        this.jsonbConfig = jsonbConfig;
        this.mappingContext = new MappingContext(this);
        this.componentInstanceCreator = initComponentInstanceCreator();
        this.componentMatcher = new ComponentMatcher(this);
        this.annotationIntrospector = new AnnotationIntrospector(this);
        this.jsonProvider = jsonProvider;
        this.jsonParserFactory = initJsonParserFactory();
        this.configProperties = new JsonbConfigProperties(jsonbConfig);
        this.deserializationModelCreator = new DeserializationModelCreator(this);
        this.serializationModelCreator = new SerializationModelCreator(this);
    }

    /**
     * Gets {@link JsonbConfig}.
     *
     * @return Configuration.
     */
    public JsonbConfig getConfig() {
        return jsonbConfig;
    }

    /**
     * Gets mapping context.
     *
     * @return Mapping context.
     */
    public MappingContext getMappingContext() {
        return mappingContext;
    }

    /**
     * Get chain model creator.
     *
     * @return chain model creator
     */
    public DeserializationModelCreator getChainModelCreator() {
        return deserializationModelCreator;
    }

    /**
     * Get serialization model creator.
     *
     * @return serialization model creator
     */
    public SerializationModelCreator getSerializationModelCreator() {
        return serializationModelCreator;
    }

    /**
     * Gets JSONP provider.
     *
     * @return JSONP provider.
     */
    public JsonProvider getJsonProvider() {
        return jsonProvider;
    }

    /**
     * Implementation creating instances of user components used by JSONB, such as adapters and strategies.
     *
     * @return Instance creator.
     */
    public JsonbComponentInstanceCreator getComponentInstanceCreator() {
        return componentInstanceCreator;
    }

    /**
     * Component matcher for lookup of (de)serializers and adapters.
     *
     * @return Component matcher.
     */
    public ComponentMatcher getComponentMatcher() {
        return componentMatcher;
    }

    /**
     * Gets component for annotation parsing.
     *
     * @return Annotation introspector.
     */
    public AnnotationIntrospector getAnnotationIntrospector() {
        return annotationIntrospector;
    }

    public JsonbConfigProperties getConfigProperties() {
        return configProperties;
    }

    public JsonParserFactory getJsonParserFactory() {
        return jsonParserFactory;
    }

    private JsonParserFactory initJsonParserFactory() {
        return jsonProvider.createParserFactory(createJsonpProperties(jsonbConfig));
    }

    /**
     * Propagates properties from JsonbConfig to JSONP generator / parser factories.
     *
     * @param jsonbConfig jsonb config
     * @return properties for JSONP generator / parser
     */
    protected Map createJsonpProperties(JsonbConfig jsonbConfig) {
        //JSONP 1.0 actually ignores the value, just checks the key is present. Only set if JsonbConfig.FORMATTING is true.
        final Optional