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

Jackson Annotations Source Code files are provided in the source packge (jackson-annotations-2.12.4-sources.jar). You can download it at Jackson Maven Website.

You can also browse Jackson Annotations Source Code below:

⏎ com/fasterxml/jackson/databind/introspect/ObjectIdInfo.java

package com.fasterxml.jackson.databind.introspect;

import com.fasterxml.jackson.annotation.JsonIdentityInfo;
import com.fasterxml.jackson.annotation.ObjectIdGenerator;
import com.fasterxml.jackson.annotation.ObjectIdResolver;
import com.fasterxml.jackson.annotation.SimpleObjectIdResolver;
import com.fasterxml.jackson.databind.PropertyName;
import com.fasterxml.jackson.databind.util.ClassUtil;

/**
 * Container object that encapsulates information usually
 * derived from {@link JsonIdentityInfo} annotation or its
 * custom alternatives
 */
public class ObjectIdInfo
{
    protected final PropertyName _propertyName;
    protected final Class<? extends ObjectIdGenerator<?>> _generator;
    protected final Class<? extends ObjectIdResolver> _resolver;
    protected final Class<?> _scope;
    protected final boolean _alwaysAsId;

    /**
     * @since 2.8.9
     */
    private final static ObjectIdInfo EMPTY = new ObjectIdInfo(PropertyName.NO_NAME, Object.class, null, false, null);

    public ObjectIdInfo(PropertyName name, Class<?> scope, Class<? extends ObjectIdGenerator<?>> gen,
            Class<? extends ObjectIdResolver> resolver)
    {
        this(name, scope, gen, false, resolver);
    }

    protected ObjectIdInfo(PropertyName prop, Class<?> scope, Class<? extends ObjectIdGenerator<?>> gen,
            boolean alwaysAsId)
    {
        this(prop, scope, gen, alwaysAsId, SimpleObjectIdResolver.class);

    }

    protected ObjectIdInfo(PropertyName prop, Class<?> scope, Class<? extends ObjectIdGenerator<?>> gen,
            boolean alwaysAsId, Class<? extends ObjectIdResolver> resolver)
    {
        _propertyName = prop;
        _scope = scope;
        _generator = gen;
        _alwaysAsId = alwaysAsId;
        if (resolver == null) {
            resolver = SimpleObjectIdResolver.class;
        }
        _resolver = resolver;
    }

    public static ObjectIdInfo empty() {
        return EMPTY;
    }

    public ObjectIdInfo withAlwaysAsId(boolean state) {
        if (_alwaysAsId == state) {
            return this;
        }
        return new ObjectIdInfo(_propertyName, _scope, _generator, state, _resolver);
    }
    
    public PropertyName getPropertyName() { return _propertyName; }
    public Class<?> getScope() { return _scope; }
    public Class<? extends ObjectIdGenerator<?>> getGeneratorType() { return _generator; }
    public Class<? extends ObjectIdResolver> getResolverType() { return _resolver; }
    public boolean getAlwaysAsId() { return _alwaysAsId; }

    @Override
    public String toString() {
        return "ObjectIdInfo: propName="+_propertyName
                +", scope="+ClassUtil.nameOf(_scope)
                +", generatorType="+ClassUtil.nameOf(_generator)
                +", alwaysAsId="+_alwaysAsId;
    }
}

⏎ com/fasterxml/jackson/databind/introspect/ObjectIdInfo.java

 

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