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package com.fasterxml.jackson.databind;

import java.lang.annotation.Annotation;

import com.fasterxml.jackson.databind.introspect.AnnotatedMember;
import com.fasterxml.jackson.databind.util.Annotations;
import com.fasterxml.jackson.databind.util.Named;

/**
 * Bean properties are logical entities that represent data
 * that Java objects (POJOs (Plain Old Java Objects), sometimes also called "beans")
 * contain; and that are accessed using accessors (methods like getters
 * and setters, fields, contstructor parametrers).
 * Instances allow access to annotations directly associated
 * to property (via field or method), as well as contextual
 * annotations (annotations for class that contains properties).
 *

* Instances are not typically passed when constructing serializers * and deserializers, but rather only passed when context * is known when * {@link com.fasterxml.jackson.databind.ser.ContextualSerializer} and * {@link com.fasterxml.jackson.databind.deser.ContextualDeserializer} * resolution occurs (createContextual(...) method is called). * References may (need to) be retained by serializers and deserializers, * especially when further resolving dependant handlers like value * serializers/deserializers or structured types. */ public interface BeanProperty extends Named { /** * Method to get logical name of the property */ // @Override public String getName(); /** * Method to get declared type of the property. */ public JavaType getType(); /** * Method for finding annotation associated with this property; * meaning annotation associated with one of entities used to * access property. */ public A getAnnotation(Class acls); /** * Method for finding annotation associated with context of * this property; usually class in which member is declared * (or its subtype if processing subtype). */ public A getContextAnnotation(Class acls); /** * Method for accessing primary physical entity that represents the property; * annotated field, method or constructor property. */ public AnnotatedMember getMember(); /* /********************************************************** /* Helper classes /********************************************************** */ /** * Simple stand-alone implementation, useful as a placeholder * or base class for more complex implementations. */ public static class Std implements BeanProperty { protected final String _name; protected final JavaType _type; /** * Physical entity (field, method or constructor argument) that * is used to access value of property (or in case of constructor * property, just placeholder) */ protected final AnnotatedMember _member; /** * Annotations defined in the context class (if any); may be null * if no annotations were found */ protected final Annotations _contextAnnotations; public Std(String name, JavaType type, Annotations contextAnnotations, AnnotatedMember member) { _name = name; _type = type; _member = member; _contextAnnotations = contextAnnotations; } public Std withType(JavaType type) { return new Std(_name, type, _contextAnnotations, _member); } // @Override public A getAnnotation(Class acls) { return (_member == null) ? null : _member.getAnnotation(acls); } // @Override public A getContextAnnotation(Class acls) { return (_contextAnnotations == null) ? null : _contextAnnotations.get(acls); } // @Override public String getName() { return _name; } // @Override public JavaType getType() { return _type; } // @Override public AnnotatedMember getMember() { return _member; } } }





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