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

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

You can also browse Jackson Databind Source Code below:

⏎ com/fasterxml/jackson/databind/introspect/AnnotatedMember.java

package com.fasterxml.jackson.databind.introspect;

import java.lang.annotation.Annotation;
import java.lang.reflect.Member;
import java.util.Collections;

import com.fasterxml.jackson.databind.util.ClassUtil;

/**
 * Intermediate base class for annotated entities that are members of
 * a class; fields, methods and constructors. This is a superset
 * of things that can represent logical properties as it contains
 * constructors in addition to fields and methods.
 */
public abstract class AnnotatedMember
    extends Annotated
    implements java.io.Serializable
{
    private static final long serialVersionUID = 1L; // since 2.5

    // 19-Dec-2014, tatu: Similarly, assumed NOT to be needed in cases where
    //    owning object (ObjectMapper or relatives) is being JDK-serialized
    /**
     * Context object needed for resolving generic type associated with this
     * member (method parameter or return value, or field type).
     *
     * @since 2.7
     */
    protected final transient TypeResolutionContext _typeContext;

    // Transient since information not needed after construction, so
    // no need to persist
    protected final transient AnnotationMap _annotations;

    protected AnnotatedMember(TypeResolutionContext ctxt, AnnotationMap annotations) {
        super();
        _typeContext = ctxt;
        _annotations = annotations;
    }

    /**
     * Copy-constructor.
     *
     * @since 2.5
     */
    protected AnnotatedMember(AnnotatedMember base) {
        _typeContext = base._typeContext;
        _annotations = base._annotations;
    }

    /**
     * Fluent factory method that will construct a new instance that uses specified
     * instance annotations instead of currently configured ones.
     *
     * @since 2.9 (promoted from `Annotated`)
     */
    public abstract Annotated withAnnotations(AnnotationMap fallback);

    /**
     * Actual physical class in which this memmber was declared.
     */
    public abstract Class<?> getDeclaringClass();

    public abstract Member getMember();

    public String getFullName() {
        return getDeclaringClass().getName() + "#" + getName();
    }

    /**
     * Accessor for {@link TypeResolutionContext} that is used for resolving
     * full generic type of this member.
     * 
     * @since 2.7
     *
     * @deprecated Since 2.9
     */
    @Deprecated
    public TypeResolutionContext getTypeContext() {
        return _typeContext;
    }

    @Override
    public final <A extends Annotation> A getAnnotation(Class<A> acls) {
        if (_annotations == null) {
            return null;
        }
        return _annotations.get(acls);
    }

    @Override
    public final boolean hasAnnotation(Class<?> acls) {
        if (_annotations == null) {
            return false;
        }
        return _annotations.has(acls);
    }

    @Override
    public boolean hasOneOf(Class<? extends Annotation>[] annoClasses) {
        if (_annotations == null) {
            return false;
        }
        return _annotations.hasOneOf(annoClasses);
    }

    @Override
    @Deprecated
    public Iterable<Annotation> annotations() {
        if (_annotations == null) {
            return Collections.emptyList();
        }
        return _annotations.annotations();
    }

    /**
     *<p>
     * NOTE: promoted in 2.9 from `Annotated` up
     */
    public AnnotationMap getAllAnnotations() { // alas, used by at least one module, hence public
        return _annotations;
    }

    /**
     * Method that can be called to modify access rights, by calling
     * {@link java.lang.reflect.AccessibleObject#setAccessible} on
     * the underlying annotated element.
     *<p>
     * Note that caller should verify that
     * {@link com.fasterxml.jackson.databind.MapperFeature#CAN_OVERRIDE_ACCESS_MODIFIERS}
     * is enabled before calling this method; as well as pass
     * <code>force</code> flag appropriately.
     * 
     * @since 2.7
     */
    public final void fixAccess(boolean force) {
        Member m = getMember();
        if (m != null) { // may be null for virtual members
            ClassUtil.checkAndFixAccess(m, force);
        }
    }

    /**
     * Optional method that can be used to assign value of
     * this member on given object, if this is a supported
     * operation for member type.
     *<p>
     * This is implemented for fields and single-argument
     * member methods; but not for constructor parameters or
     * other types of methods (like static methods)
     */
    public abstract void setValue(Object pojo, Object value)
        throws UnsupportedOperationException, IllegalArgumentException;

    /**
     * Optional method that can be used to access the value of
     * this member on given object, if this is a supported
     * operation for member type.
     *<p>
     * This is implemented for fields and no-argument
     * member methods; but not for constructor parameters or
     * other types of methods (like static methods)
     */
    public abstract Object getValue(Object pojo)
        throws UnsupportedOperationException, IllegalArgumentException;
}

⏎ com/fasterxml/jackson/databind/introspect/AnnotatedMember.java

Or download all of them as a single archive file:

File name: jackson-databind-2.14.0-sources.jar
File size: 1187952 bytes
Release date: 2022-11-05
Download 

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