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/introspect/VirtualAnnotatedMember.java

    package com.fasterxml.jackson.databind.introspect;
    
    import java.lang.reflect.*;
    
    import com.fasterxml.jackson.databind.JavaType;
    import com.fasterxml.jackson.databind.util.ClassUtil;
    
    /**
     * Placeholder used by virtual properties as placeholder for
     * underlying {@link AnnotatedMember}.
     * 
     * @since 2.5
     */
    public class VirtualAnnotatedMember extends AnnotatedMember
        implements java.io.Serializable
    {
        private static final long serialVersionUID = 1L;
    
        protected final Class<?> _declaringClass;
    
        /**
         * @since 2.8 with this signature; had <code>_rawType</code> earlier
         */
        protected final JavaType _type;
    
        protected final String _name;
    
        /*
        /**********************************************************
        /* Life-cycle
        /**********************************************************
         */
    
        public VirtualAnnotatedMember(TypeResolutionContext typeContext, Class<?> declaringClass,
                String name, JavaType type)
        {
            super(typeContext, /* AnnotationMap*/ null);
            _declaringClass = declaringClass;
            _type = type;
            _name = name;
        }
    
        @Override
        public Annotated withAnnotations(AnnotationMap fallback) {
            return this;
        }
        
        /*
        /**********************************************************
        /* Annotated impl
        /**********************************************************
         */
    
        @Override
        public Field getAnnotated() { return null; }
    
        @Override
        public int getModifiers() { return 0; }
    
        @Override
        public String getName() { return _name; }
    
        @Override
        public Class<?> getRawType() {
            return _type.getRawClass();
        }
    
        @Override
        public JavaType getType() {
            return _type;
        }
    
        /*
        /**********************************************************
        /* AnnotatedMember impl
        /**********************************************************
         */
    
        @Override
        public Class<?> getDeclaringClass() { return _declaringClass; }
    
        @Override
        public Member getMember() { return null; }
    
        @Override
        public void setValue(Object pojo, Object value) throws IllegalArgumentException {
            throw new IllegalArgumentException("Cannot set virtual property '"+_name+"'");
        }
    
        @Override
        public Object getValue(Object pojo) throws IllegalArgumentException {
            throw new IllegalArgumentException("Cannot get virtual property '"+_name+"'");
        }
        
        /*
        /**********************************************************
        /* Extended API, generic
        /**********************************************************
         */
    
        public int getAnnotationCount() { return 0; }
    
        @Override
        public int hashCode() {
            return _name.hashCode();
        }
        
        @Override
        public boolean equals(Object o) {
            if (o == this) return true;
            if (!ClassUtil.hasClass(o, getClass())) {
                return false;
            }
            VirtualAnnotatedMember other = (VirtualAnnotatedMember) o;
            return (other._declaringClass == _declaringClass)
                    && other._name.equals(_name);
        }
    
        @Override
        public String toString() {
            return "[virtual "+getFullName()+"]";
        }
    }
    

    com/fasterxml/jackson/databind/introspect/VirtualAnnotatedMember.java

     

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    2022-03-29, 32311👍, 0💬