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-2.14.0-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/MappingJsonFactory.java

    package com.fasterxml.jackson.databind;
    
    import java.io.IOException;
    
    import com.fasterxml.jackson.core.*;
    import com.fasterxml.jackson.core.format.InputAccessor;
    import com.fasterxml.jackson.core.format.MatchStrength;
    
    /**
     * Sub-class of {@link JsonFactory} that will create a proper
     * {@link ObjectCodec} to allow seam-less conversions between
     * JSON content and Java objects (POJOs).
     * The only addition to regular {@link JsonFactory} currently
     * is that {@link ObjectMapper} is constructed and passed as
     * the codec to use.
     */
    public class MappingJsonFactory
        extends JsonFactory
    {
        private static final long serialVersionUID = -1; // since 2.7
    
        public MappingJsonFactory()
        {
            this(null);
        }
    
        public MappingJsonFactory(ObjectMapper mapper)
        {
            super(mapper);
            if (mapper == null) {
                setCodec(new ObjectMapper(this));
            }
        }
    
        public MappingJsonFactory(JsonFactory src, ObjectMapper mapper)
        {
            super(src, mapper);
            if (mapper == null) {
                setCodec(new ObjectMapper(this));
            }
        }
    
        /**
         * We'll override the method to return more specific type; co-variance
         * helps here
         */
        @Override
        public final ObjectMapper getCodec() { return (ObjectMapper) _objectCodec; }
    
        // @since 2.1
        @Override
        public JsonFactory copy()
        {
            _checkInvalidCopy(MappingJsonFactory.class);
            // note: as with base class, must NOT copy mapper reference
            return new MappingJsonFactory(this, null);
        }
        
        /*
        /**********************************************************
        /* Format detection functionality (since 1.8)
        /**********************************************************
         */
        
        /**
         * Sub-classes need to override this method
         */
        @Override
        public String getFormatName()
        {
            /* since non-JSON factories typically should not extend this class,
             * let's just always return JSON as name.
             */
            return FORMAT_NAME_JSON;
        }
    
        /**
         * Sub-classes need to override this method
         */
        @Override
        public MatchStrength hasFormat(InputAccessor acc) throws IOException
        {
            if (getClass() == MappingJsonFactory.class) {
                return hasJSONFormat(acc);
            }
            return null;
        }
    }
    

    com/fasterxml/jackson/databind/MappingJsonFactory.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
    Download 
    

     

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