Jackson is "the Java JSON library" or "the best JSON parser for Java". Or simply as "JSON for Java".

Jackson also allows you to parse or generate XML messages with the Jackson Dataformat XML Extension.

Jackson Dataformat XML Source Code files are provided in the source packge (jackson-dataformat-xml-2.14.0-sources.jar). You can download it at Jackson Maven Website.

You can also browse Jackson Dataformat XML Source Code below:

⏎ com/fasterxml/jackson/dataformat/xml/ser/UnwrappingXmlBeanSerializer.java

package com.fasterxml.jackson.dataformat.xml.ser;

import java.io.IOException;
import java.util.Set;

import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.ser.*;
import com.fasterxml.jackson.databind.ser.impl.ObjectIdWriter;
import com.fasterxml.jackson.databind.ser.impl.UnwrappingBeanSerializer;
import com.fasterxml.jackson.databind.ser.std.BeanSerializerBase;
import com.fasterxml.jackson.databind.util.NameTransformer;

/**
 * Copy of {@link UnwrappingBeanSerializer} required to extend
 * {@link XmlBeanSerializerBase} for XML-specific handling.
 * 
 * @author Pascal Gélinas
 * 
 */
public class UnwrappingXmlBeanSerializer extends XmlBeanSerializerBase
{
    private static final long serialVersionUID = 1L;
 
    /**
     * Transformer used to add prefix and/or suffix for properties of unwrapped
     * POJO.
     */
    protected final NameTransformer _nameTransformer;

    /*
    /**********************************************************
    /* Life-cycle: constructors
    /**********************************************************
     */

    /**
     * Constructor used for creating unwrapping instance of a standard
     * <code>BeanSerializer</code>
     */
    public UnwrappingXmlBeanSerializer(XmlBeanSerializerBase src, NameTransformer transformer)
    {
        super(src, transformer);
        _nameTransformer = transformer;
    }

    public UnwrappingXmlBeanSerializer(UnwrappingXmlBeanSerializer src, ObjectIdWriter objectIdWriter)
    {
        super(src, objectIdWriter);
        _nameTransformer = src._nameTransformer;
    }

    public UnwrappingXmlBeanSerializer(UnwrappingXmlBeanSerializer src, ObjectIdWriter objectIdWriter, Object filterId)
    {
        super(src, objectIdWriter, filterId);
        _nameTransformer = src._nameTransformer;
    }

    protected UnwrappingXmlBeanSerializer(UnwrappingXmlBeanSerializer src,
            Set<String> toIgnore, Set<String> toInclude)
    {
        super(src, toIgnore, toInclude);
        _nameTransformer = src._nameTransformer;
    }

    protected UnwrappingXmlBeanSerializer(UnwrappingXmlBeanSerializer src,
            BeanPropertyWriter[] properties, BeanPropertyWriter[] filteredProperties)
    {
        super(src, properties, filteredProperties);
        _nameTransformer = src._nameTransformer;
    }

    /*
    /**********************************************************
    /* Life-cycle: factory methods, fluent factories
    /**********************************************************
     */

    @Override
    public JsonSerializer<Object> unwrappingSerializer(NameTransformer transformer)
    {
        // !!! 23-Jan-2012, tatu: Should we chain transformers?
        return new UnwrappingXmlBeanSerializer(this, transformer);
    }

    @Override
    public boolean isUnwrappingSerializer()
    {
        return true; // sure is
    }

    @Override
    public BeanSerializerBase withObjectIdWriter(ObjectIdWriter objectIdWriter)
    {
        return new UnwrappingXmlBeanSerializer(this, objectIdWriter);
    }

    @Override
    public BeanSerializerBase withFilterId(Object filterId)
    {
        return new UnwrappingXmlBeanSerializer(this, _objectIdWriter, filterId);
    }

    @Override // since 2.12
    protected BeanSerializerBase withByNameInclusion(Set<String> toIgnore, Set<String> toInclude) {
        return new UnwrappingXmlBeanSerializer(this, toIgnore, toInclude);
    }

    @Override // since 2.11.1
    protected BeanSerializerBase withProperties(BeanPropertyWriter[] properties,
            BeanPropertyWriter[] filteredProperties) {
        return new UnwrappingXmlBeanSerializer(this, properties, filteredProperties);
    }

    /**
     * JSON Array output can not be done if unwrapping operation is requested;
     * so implementation will simply return 'this'.
     */
    @Override
    protected BeanSerializerBase asArraySerializer() {
        return this;
    }

    /*
    /**********************************************************
    /* JsonSerializer implementation that differs between impls
    /**********************************************************
     */

    /**
     * Main serialization method that will delegate actual output to configured
     * {@link BeanPropertyWriter} instances.
     */
    @Override
    public final void serialize(Object bean, JsonGenerator jgen, SerializerProvider provider)
        throws IOException, JsonGenerationException
    {
        if (_objectIdWriter != null) {
            _serializeWithObjectId(bean, jgen, provider, false);
            return;
        }
        if (_propertyFilterId != null) {
            serializeFieldsFiltered(bean, jgen, provider);
        } else {
            serializeFields(bean, jgen, provider);
        }
    }

    /*
    /**********************************************************
    /* Standard methods
    /**********************************************************
     */

    @Override
    public String toString()
    {
        return "UnwrappingXmlBeanSerializer for " + handledType().getName();
    }
}

⏎ com/fasterxml/jackson/dataformat/xml/ser/UnwrappingXmlBeanSerializer.java

Or download all of them as a single archive file:

File name: jackson-dataformat-xml-2.14.0-sources.jar
File size: 98015 bytes
Release date: 2022-11-05
Download 

⇒ Download Jackson Dataformat Binary Packages

⇐ Jackson Dataformat Extensions

⇑ Downloading and Reviewing jackson-*.jar

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