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/JSONPObject.java

    package com.fasterxml.jackson.databind.util;
    
    import java.io.IOException;
    
    import com.fasterxml.jackson.core.*;
    
    import com.fasterxml.jackson.databind.*;
    import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
    
    /**
     * Container class that can be used to wrap any Object instances (including
     * nulls), and will serialize embedded in
     * <a href="http://en.wikipedia.org/wiki/JSONP">JSONP</a> wrapping.
     * 
     * @see com.fasterxml.jackson.databind.util.JSONWrappedObject
     */
    public class JSONPObject
        implements JsonSerializable
    {
        /**
         * JSONP function name to use for serialization
         */
        protected final String _function;
        
        /**
         * Value to be serialized as JSONP padded; can be null.
         */
        protected final Object _value;
    
        /**
         * Optional static type to use for serialization; if null, runtime
         * type is used. Can be used to specify declared type which defines
         * serializer to use, as well as aspects of extra type information
         * to include (if any).
         */
        protected final JavaType _serializationType;
    
        public JSONPObject(String function, Object value) {
            this(function, value, (JavaType) null);
        }
    
        public JSONPObject(String function, Object value, JavaType asType)
        {
            _function = function;
            _value = value;
            _serializationType = asType;
        }
        
        /*
        /**********************************************************
        /* JsonSerializable(WithType) implementation
        /**********************************************************
         */
    
        @Override
        public void serializeWithType(JsonGenerator gen, SerializerProvider provider, TypeSerializer typeSer)
                throws IOException
        {
            // No type for JSONP wrapping: value serializer will handle typing for value:
            serialize(gen, provider);
        }
    
        @Override
        public void serialize(JsonGenerator gen, SerializerProvider provider)
                throws IOException
        {
            // First, wrapping:
            gen.writeRaw(_function);
            gen.writeRaw('(');
    
            if (_value == null) {
                provider.defaultSerializeNull(gen);
            } else {
                // NOTE: Escape line-separator characters that break JSONP only if no custom character escapes are set.
                // If custom escapes are in place JSONP-breaking characters will not be escaped and it is recommended to
                // add escaping for those (see JsonpCharacterEscapes class).
                boolean override = (gen.getCharacterEscapes() == null);
                if (override) {
                    gen.setCharacterEscapes(JsonpCharacterEscapes.instance());
                }
    
                try {
                    if (_serializationType != null) {
                        provider.findTypedValueSerializer(_serializationType, true, null).serialize(_value, gen, provider);
                    } else {
                        provider.findTypedValueSerializer(_value.getClass(), true, null).serialize(_value, gen, provider);
                    }
                } finally {
                    if (override) {
                        gen.setCharacterEscapes(null);
                    }
                }
            }
            gen.writeRaw(')');
        }
    
        /*
        /**************************************************************
        /* Accessors
        /**************************************************************
         */
        
        public String getFunction() { return _function; }
        public Object getValue() { return _value; }
        public JavaType getSerializationType() { return _serializationType; }
    }
    

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

     

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    2022-03-29, 31912👍, 0💬