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/util/StdConverter.java

    package com.fasterxml.jackson.databind.util;
    
    import com.fasterxml.jackson.databind.JavaType;
    import com.fasterxml.jackson.databind.type.TypeFactory;
    
    /**
     * Standard implementation of {@link Converter} that supports explicit
     * type access, instead of relying type detection of generic type
     * parameters. 
     * 
     * @since 2.2
     */
    public abstract class StdConverter<IN,OUT>
        implements Converter<IN,OUT>
    {
        /*
        /**********************************************************
        /* Partial Converter API implementation
        /**********************************************************
         */
    
        @Override
        public abstract OUT convert(IN value);
    
        @Override
        public JavaType getInputType(TypeFactory typeFactory) {
            return _findConverterType(typeFactory).containedType(0);
        }
    
        @Override
        public JavaType getOutputType(TypeFactory typeFactory) {
            return _findConverterType(typeFactory).containedType(1);
        }
    
        protected JavaType _findConverterType(TypeFactory tf) {
            JavaType thisType = tf.constructType(getClass());
            JavaType convType = thisType.findSuperType(Converter.class);
            if (convType == null || convType.containedTypeCount() < 2) {
                throw new IllegalStateException("Cannot find OUT type parameter for Converter of type "+getClass().getName());
            }
            return convType;
        }
    }
    

    com/fasterxml/jackson/databind/util/StdConverter.java

     

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    2022-03-29, 31954👍, 0💬