Jackson is "the Java JSON library" or "the best JSON parser for Java". Or simply as "JSON for Java".

Jackson Databind Source Code files are provided in the source packge (jackson-databind-2.14.0-sources.jar). You can download it at Jackson Maven Website.

You can also browse Jackson Databind Source Code below:

⏎ com/fasterxml/jackson/databind/cfg/ConfigOverride.java

package com.fasterxml.jackson.databind.cfg;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonSetter;

/**
 * Configuration object that is accessed by databinding functionality
 * to find overrides to configuration of properties, based on declared
 * type of the property. Such overrides have precedence over annotations
 * attached to actual type ({@link java.lang.Class}), but can be further
 * overridden by annotations attached to the property itself.
 *
 * @since 2.8
 */
public abstract class ConfigOverride
{
    /**
     * Definitions of format overrides, if any.
     */
    protected JsonFormat.Value _format;

    /**
     * Definitions of inclusion defaults to use for properties included in this POJO type.
     * Overrides global defaults, may be overridden by per-property-type (see
     * {@link #_includeAsProperty}) and per-property overrides (annotations).
     */
    protected JsonInclude.Value _include;

    /**
     * Definitions of inclusion defaults for properties of this specified type (regardless
     * of POJO in which they are included).
     * Overrides global defaults, per-POJO inclusion defaults (see {#link {@link #_include}}),
     * may be overridden by per-property overrides.
     *
     * @since 2.9
     */
    protected JsonInclude.Value _includeAsProperty;

    /**
     * Definitions of property ignoral (whether to serialize, deserialize
     * given logical property) overrides, if any.
     */
    protected JsonIgnoreProperties.Value _ignorals;

    /**
     * Definitions of setter overrides regarding null handling
     *
     * @since 2.9
     */
    protected JsonSetter.Value _setterInfo;

    /**
     * Overrides for auto-detection visibility rules for this type.
     *
     * @since 2.9
     */
    protected JsonAutoDetect.Value _visibility;

    /**
     * Flag that indicates whether "is ignorable type" is specified for this type;
     * and if so, is it to be ignored (true) or not ignored (false); `null` is
     * used to indicate "not specified", in which case other configuration (class
     * annotation) is used.
     */
    protected Boolean _isIgnoredType;

    /**
     * Flag that indicates whether properties of this type default to being merged
     * or not.
     */
    protected Boolean _mergeable;
    
    protected ConfigOverride() { }
    protected ConfigOverride(ConfigOverride src) {
        _format = src._format;
        _include = src._include;
        _includeAsProperty = src._includeAsProperty;
        _ignorals = src._ignorals;
        _setterInfo = src._setterInfo;
        _visibility = src._visibility;
        _isIgnoredType = src._isIgnoredType;
        _mergeable = src._mergeable;
    }

    /**
     * Accessor for immutable "empty" instance that has no configuration overrides defined.
     *
     * @since 2.9
     */
    public static ConfigOverride empty() {
        return Empty.INSTANCE;
    }

    public JsonFormat.Value getFormat() { return _format; }
    public JsonInclude.Value getInclude() { return _include; }

    /**
     * @since 2.9
     */
    public JsonInclude.Value getIncludeAsProperty() { return _includeAsProperty; }

    public JsonIgnoreProperties.Value getIgnorals() { return _ignorals; }

    public Boolean getIsIgnoredType() {
        return _isIgnoredType;
    }
    
    /**
     * @since 2.9
     */
    public JsonSetter.Value getSetterInfo() { return _setterInfo; }

    /**
     * @since 2.9
     */
    public JsonAutoDetect.Value getVisibility() { return _visibility; }

    /**
     * @since 2.9
     */
    public Boolean getMergeable() { return _mergeable; }
    
    /**
     * Implementation used solely for "empty" instance; has no mutators
     * and is not changed by core functionality.
     *
     * @since 2.9
     */
    final static class Empty extends ConfigOverride {
        final static Empty INSTANCE = new Empty();

        private Empty() { }
    }
}

⏎ com/fasterxml/jackson/databind/cfg/ConfigOverride.java

Or download all of them as a single archive file:

File name: jackson-databind-2.14.0-sources.jar
File size: 1187952 bytes
Release date: 2022-11-05
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