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/std/InetAddressSerializer.java

    package com.fasterxml.jackson.databind.ser.std;
    
    import java.io.IOException;
    import java.net.InetAddress;
    
    import com.fasterxml.jackson.annotation.JsonFormat;
    import com.fasterxml.jackson.core.*;
    import com.fasterxml.jackson.core.type.WritableTypeId;
    import com.fasterxml.jackson.databind.BeanProperty;
    import com.fasterxml.jackson.databind.JsonMappingException;
    import com.fasterxml.jackson.databind.JsonSerializer;
    import com.fasterxml.jackson.databind.SerializerProvider;
    import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
    import com.fasterxml.jackson.databind.ser.ContextualSerializer;
    
    /**
     * Simple serializer for {@link java.net.InetAddress}. Main complexity is
     * with registration, since same serializer is to be used for sub-classes.
     *<p>
     * Since 2.9 allows use of {@link JsonFormat} configuration (annotation,
     * per-type defaulting) so that if <code>JsonFormat.Shape.NUMBER</code>
     * (or <code>ARRAY</code>) is used, will serialize as "host address"
     * (dotted numbers) instead of simple conversion.
     */
    @SuppressWarnings("serial")
    public class InetAddressSerializer
        extends StdScalarSerializer<InetAddress>
        implements ContextualSerializer
    {
        /**
         * @since 2.9
         */
        protected final boolean _asNumeric;
    
        public InetAddressSerializer() {
            this(false);
        }
    
        /**
         * @since 2.9
         */
        public InetAddressSerializer(boolean asNumeric) {
            super(InetAddress.class);
            _asNumeric = asNumeric;
        }
    
        @Override
        public JsonSerializer<?> createContextual(SerializerProvider serializers,
                BeanProperty property) throws JsonMappingException
        {
            JsonFormat.Value format = findFormatOverrides(serializers,
                    property, handledType());
            boolean asNumeric = false;
            if (format != null) {
                JsonFormat.Shape shape = format.getShape();
                if (shape.isNumeric() || shape == JsonFormat.Shape.ARRAY) {
                    asNumeric = true;
                }
            }
            if (asNumeric != _asNumeric) {
                return new InetAddressSerializer(asNumeric);
            }
            return this;
        }
    
        @Override
        public void serialize(InetAddress value, JsonGenerator g, SerializerProvider provider) throws IOException
        {
            String str;
    
            if (_asNumeric) { // since 2.9
                str = value.getHostAddress();
            } else {
                // Ok: get textual description; choose "more specific" part
                str = value.toString().trim();
                int ix = str.indexOf('/');
                if (ix >= 0) {
                    if (ix == 0) { // missing host name; use address
                        str = str.substring(1);
                    } else { // otherwise use name
                        str = str.substring(0, ix);
                    }
                }
            }
            g.writeString(str);
        }
    
        @Override
        public void serializeWithType(InetAddress value, JsonGenerator g,
                SerializerProvider provider, TypeSerializer typeSer) throws IOException
        {
            // Better ensure we don't use specific sub-classes...
            WritableTypeId typeIdDef = typeSer.writeTypePrefix(g,
                    typeSer.typeId(value, InetAddress.class, JsonToken.VALUE_STRING));
            serialize(value, g, provider);
            typeSer.writeTypeSuffix(g, typeIdDef);
        }
    }
    

    com/fasterxml/jackson/databind/ser/std/InetAddressSerializer.java

     

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    2022-03-29, 32064👍, 0💬