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/ser/impl/AttributePropertyWriter.java

    package com.fasterxml.jackson.databind.ser.impl;
    
    import com.fasterxml.jackson.annotation.JsonInclude;
    import com.fasterxml.jackson.core.JsonGenerator;
    import com.fasterxml.jackson.databind.*;
    import com.fasterxml.jackson.databind.cfg.MapperConfig;
    import com.fasterxml.jackson.databind.introspect.AnnotatedClass;
    import com.fasterxml.jackson.databind.introspect.BeanPropertyDefinition;
    import com.fasterxml.jackson.databind.ser.VirtualBeanPropertyWriter;
    import com.fasterxml.jackson.databind.util.Annotations;
    
    /**
     * {@link VirtualBeanPropertyWriter} implementation used for
     * {@link com.fasterxml.jackson.databind.annotation.JsonAppend},
     * to serialize properties backed-by dynamically assignable attribute
     * values.
     * 
     * @since 2.5
     */
    public class AttributePropertyWriter
        extends VirtualBeanPropertyWriter
    {
        private static final long serialVersionUID = 1;
    
        protected final String _attrName;
    
        /*
        /**********************************************************
        /* Life-cycle
        /**********************************************************
         */
    
        protected AttributePropertyWriter(String attrName, BeanPropertyDefinition propDef,
                Annotations contextAnnotations, JavaType declaredType) {
            this(attrName, propDef, contextAnnotations, declaredType, propDef.findInclusion());
        }
    
        protected AttributePropertyWriter(String attrName, BeanPropertyDefinition propDef,
                Annotations contextAnnotations, JavaType declaredType,
                JsonInclude.Value inclusion)
        {
            super(propDef, contextAnnotations, declaredType,
                    /* value serializer */ null, /* type serializer */ null, /* ser type */ null,
                    inclusion,
                    // 10-Oct-2016, tatu: Could enable per-view settings too in future
                    null);
            _attrName = attrName;
        }
    
        public static AttributePropertyWriter construct(String attrName,
                BeanPropertyDefinition propDef,
                Annotations contextAnnotations,
                JavaType declaredType)
        {
            return new AttributePropertyWriter(attrName, propDef,
                    contextAnnotations, declaredType);
        }
        
        protected AttributePropertyWriter(AttributePropertyWriter base) {
            super(base);
            _attrName = base._attrName;
        }
    
        /**
         * Since this method should typically not be called on this sub-type,
         * default implementation simply throws an {@link IllegalStateException}.
         */
        @Override
        public VirtualBeanPropertyWriter withConfig(MapperConfig<?> config,
                AnnotatedClass declaringClass, BeanPropertyDefinition propDef, JavaType type) {
            throw new IllegalStateException("Should not be called on this type");
        }
        
        /*
        /**********************************************************
        /* Overrides for actual serialization, value access
        /**********************************************************
         */
        
        @Override
        protected Object value(Object bean, JsonGenerator jgen, SerializerProvider prov) throws Exception {
            return prov.getAttribute(_attrName);
        }
    }
    

    com/fasterxml/jackson/databind/ser/impl/AttributePropertyWriter.java

     

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    2022-03-29, 32012👍, 0💬