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/type/CollectionType.java

    package com.fasterxml.jackson.databind.type;
    
    import java.lang.reflect.TypeVariable;
    
    import com.fasterxml.jackson.databind.JavaType;
    
    /**
     * Type that represents Java Collection types (Lists, Sets).
     */
    public final class CollectionType
        extends CollectionLikeType
    {
        private static final long serialVersionUID = 1L;
    
        /*
        /**********************************************************
        /* Life-cycle
        /**********************************************************
         */
    
        private CollectionType(Class<?> collT, TypeBindings bindings,
                JavaType superClass, JavaType[] superInts, JavaType elemT,
                Object valueHandler, Object typeHandler, boolean asStatic)
        {
            super(collT, bindings, superClass, superInts, elemT, valueHandler, typeHandler, asStatic);
        }
    
        /**
         * @since 2.7
         */
        protected CollectionType(TypeBase base, JavaType elemT) {
            super(base, elemT);
        }
    
        /**
         * @since 2.7
         */
        public static CollectionType construct(Class<?> rawType, TypeBindings bindings,
                JavaType superClass, JavaType[] superInts, JavaType elemT) {
            return new CollectionType(rawType, bindings, superClass, superInts, elemT,
                    null, null, false);
        }
    
        /**
         * @deprecated Since 2.7, remove from 2.9
         */
        @Deprecated // since 2.7
        public static CollectionType construct(Class<?> rawType, JavaType elemT) {
            // First: may need to fabricate TypeBindings (needed for refining into
            // concrete collection types, as per [databind#1102])
            TypeVariable<?>[] vars = rawType.getTypeParameters();
            TypeBindings bindings;
            if ((vars == null) || (vars.length != 1)) {
                bindings = TypeBindings.emptyBindings();
            } else {
                bindings = TypeBindings.create(rawType, elemT);
            }
            return new CollectionType(rawType, bindings,
                    // !!! TODO: Wrong, does have supertypes, but:
                    _bogusSuperClass(rawType), null, elemT,
                    null, null, false);
        }
    
        @Deprecated // since 2.7
        @Override
        protected JavaType _narrow(Class<?> subclass) {
            return new CollectionType(subclass, _bindings,
                    _superClass, _superInterfaces, _elementType, null, null, _asStatic);
        }
    
        @Override
        public JavaType withContentType(JavaType contentType) {
            if (_elementType == contentType) {
                return this;
            }
            return new CollectionType(_class, _bindings, _superClass, _superInterfaces,
                    contentType, _valueHandler, _typeHandler, _asStatic);
        }
        
        @Override
        public CollectionType withTypeHandler(Object h) {
            return new CollectionType(_class, _bindings,
                    _superClass, _superInterfaces, _elementType, _valueHandler, h, _asStatic);
        }
    
        @Override
        public CollectionType withContentTypeHandler(Object h)
        {
            return new CollectionType(_class, _bindings,
                    _superClass, _superInterfaces, _elementType.withTypeHandler(h),
                    _valueHandler, _typeHandler, _asStatic);
        }
    
        @Override
        public CollectionType withValueHandler(Object h) {
            return new CollectionType(_class, _bindings,
                    _superClass, _superInterfaces, _elementType, h, _typeHandler, _asStatic);
        }
    
        @Override
        public  CollectionType withContentValueHandler(Object h) {
            return new CollectionType(_class, _bindings,
                    _superClass, _superInterfaces, _elementType.withValueHandler(h),
                    _valueHandler, _typeHandler, _asStatic);
        }
    
        @Override
        public CollectionType withStaticTyping() {
            if (_asStatic) {
                return this;
            }
            return new CollectionType(_class, _bindings,
                    _superClass, _superInterfaces, _elementType.withStaticTyping(),
                    _valueHandler, _typeHandler, true);
        }
    
        @Override
        public JavaType refine(Class<?> rawType, TypeBindings bindings,
                JavaType superClass, JavaType[] superInterfaces) {
            return new CollectionType(rawType, bindings,
                    superClass, superInterfaces, _elementType,
                    _valueHandler, _typeHandler, _asStatic);
        }
    
        /*
        /**********************************************************
        /* Standard methods
        /**********************************************************
         */
    
        @Override
        public String toString()
        {
            return "[collection type; class "+_class.getName()+", contains "+_elementType+"]";
        }
    }
    

    com/fasterxml/jackson/databind/type/CollectionType.java

     

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    2022-03-29, 31903👍, 0💬