Jackson Data Binding Source Code

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

  • Jackson Data Binding module allows you to converts JSON to and from POJO (Plain Old Java Object) using property accessor or using annotations.
  • 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:

    ✍: FYIcenter.com

    com/fasterxml/jackson/databind/deser/impl/NullsFailProvider.java

    package com.fasterxml.jackson.databind.deser.impl;
    
    import com.fasterxml.jackson.databind.*;
    import com.fasterxml.jackson.databind.deser.NullValueProvider;
    import com.fasterxml.jackson.databind.exc.InvalidNullException;
    import com.fasterxml.jackson.databind.util.AccessPattern;
    
    /**
     * Simple {@link NullValueProvider} that will always throw a
     * {@link InvalidNullException} when a null is encountered.
     */
    public class NullsFailProvider
        implements NullValueProvider, java.io.Serializable
    {
        private static final long serialVersionUID = 1L;
    
        protected final PropertyName _name;
        protected final JavaType _type;
    
        protected NullsFailProvider(PropertyName name, JavaType type) {
            _name = name;
            _type = type;
        }
    
        public static NullsFailProvider constructForProperty(BeanProperty prop) {
            return constructForProperty(prop, prop.getType());
        }
    
        // @since 2.10.2
        public static NullsFailProvider constructForProperty(BeanProperty prop, JavaType type) {
            return new NullsFailProvider(prop.getFullName(), type);
        }
    
        public static NullsFailProvider constructForRootValue(JavaType t) {
            return new NullsFailProvider(null, t);
        }
    
        @Override
        public AccessPattern getNullAccessPattern() {
            // Must be called every time to effect the exception...
            return AccessPattern.DYNAMIC;
        }
    
        @Override
        public Object getNullValue(DeserializationContext ctxt)
                throws JsonMappingException {
            throw InvalidNullException.from(ctxt, _name, _type);
        }
    }
    

    com/fasterxml/jackson/databind/deser/impl/NullsFailProvider.java

     

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    2022-03-29, 31861👍, 0💬