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-2.12.4-sources.jar). You can download it at Jackson Maven Website.

You can also browse Jackson Databind Source Code below:

⏎ com/fasterxml/jackson/databind/deser/impl/ValueInjector.java

package com.fasterxml.jackson.databind.deser.impl;

import java.io.IOException;

import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.introspect.AnnotatedMember;

/**
 * Class that encapsulates details of value injection that occurs before
 * deserialization of a POJO. Details include information needed to find
 * injectable value (logical id) as well as method used for assigning
 * value (setter or field)
 */
public class ValueInjector
    extends BeanProperty.Std
{
    private static final long serialVersionUID = 1L;

    /**
     * Identifier used for looking up value to inject
     */
    protected final Object _valueId;

    public ValueInjector(PropertyName propName, JavaType type,
            AnnotatedMember mutator, Object valueId)
    {
        super(propName, type, null, mutator, PropertyMetadata.STD_OPTIONAL);
        _valueId = valueId;
    }

    /**
     * @deprecated in 2.9 (remove from 3.0)
     */
    @Deprecated // see [databind#1835]
    public ValueInjector(PropertyName propName, JavaType type,
            com.fasterxml.jackson.databind.util.Annotations contextAnnotations, // removed from later versions
            AnnotatedMember mutator, Object valueId)
    {
        this(propName, type, mutator, valueId);
    }

    public Object findValue(DeserializationContext context, Object beanInstance)
        throws JsonMappingException
    {
        return context.findInjectableValue(_valueId, this, beanInstance);
    }

    public void inject(DeserializationContext context, Object beanInstance)
        throws IOException
    {
        _member.setValue(beanInstance, findValue(context, beanInstance));
    }
}

⏎ com/fasterxml/jackson/databind/deser/impl/ValueInjector.java

 

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⇑⇑ Jackson - Java JSON library