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

Jackson Annotations Source Code files are provided in the source packge (jackson-annotations-2.12.4-sources.jar). You can download it at Jackson Maven Website.

You can also browse Jackson Annotations Source Code below:

⏎ com/fasterxml/jackson/databind/ext/Java7SupportImpl.java

package com.fasterxml.jackson.databind.ext;

import java.beans.ConstructorProperties;
import java.beans.Transient;

import com.fasterxml.jackson.databind.PropertyName;
import com.fasterxml.jackson.databind.introspect.Annotated;
import com.fasterxml.jackson.databind.introspect.AnnotatedParameter;
import com.fasterxml.jackson.databind.introspect.AnnotatedWithParams;

/**
 * @since 2.8
 */
public class Java7SupportImpl extends Java7Support
{
    @SuppressWarnings("unused") // compiler warns, just needed side-effects
    private final Class<?> _bogus;

    public Java7SupportImpl() {
        // Trigger loading of annotations that only JDK 7 has, to trigger
        // early fail (see [databind#2466])
        Class<?> cls = Transient.class;
        cls = ConstructorProperties.class;
        _bogus = cls;
    }

    @Override
    public Boolean findTransient(Annotated a) {
        Transient t = a.getAnnotation(Transient.class);
        if (t != null) {
            return t.value();
        }
        return null;
    }

    @Override
    public Boolean hasCreatorAnnotation(Annotated a) {
        ConstructorProperties props = a.getAnnotation(ConstructorProperties.class);
        // 08-Nov-2015, tatu: One possible check would be to ensure there is at least
        //    one name iff constructor has arguments. But seems unnecessary for now.
        if (props != null) {
            return Boolean.TRUE;
        }
        return null;
    }

    @Override
    public PropertyName findConstructorName(AnnotatedParameter p)
    {
        AnnotatedWithParams ctor = p.getOwner();
        if (ctor != null) {
            ConstructorProperties props = ctor.getAnnotation(ConstructorProperties.class);
            if (props != null) {
                String[] names = props.value();
                int ix = p.getIndex();
                if (ix < names.length) {
                    return PropertyName.construct(names[ix]);
                }
            }
        }
        return null;
    }
}

⏎ com/fasterxml/jackson/databind/ext/Java7SupportImpl.java

 

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⇐ Jackson Data Binding Source Code

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