com.fasterxml.jackson.databind.deser.impl.ObjectIdReferenceProperty Maven / Gradle / Ivy

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package com.fasterxml.jackson.databind.deser.impl;

import java.io.IOException;
import java.lang.annotation.Annotation;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.PropertyName;
import com.fasterxml.jackson.databind.deser.SettableBeanProperty;
import com.fasterxml.jackson.databind.deser.UnresolvedForwardReference;
import com.fasterxml.jackson.databind.deser.impl.ReadableObjectId.Referring;
import com.fasterxml.jackson.databind.introspect.AnnotatedMember;
import com.fasterxml.jackson.databind.introspect.ObjectIdInfo;

public class ObjectIdReferenceProperty extends SettableBeanProperty {
    private static final long serialVersionUID = 8465266677345565407L;
    private SettableBeanProperty _forward;

    public ObjectIdReferenceProperty(SettableBeanProperty forward, ObjectIdInfo objectIdInfo)
    {
        super(forward);
        _forward = forward;
        _objectIdInfo = objectIdInfo;
    }

    public ObjectIdReferenceProperty(ObjectIdReferenceProperty src, JsonDeserializer deser)
    {
        super(src, deser);
        _forward = src._forward;
        _objectIdInfo = src._objectIdInfo;
    }

    public ObjectIdReferenceProperty(ObjectIdReferenceProperty src, PropertyName newName)
    {
        super(src, newName);
        _forward = src._forward;
        _objectIdInfo = src._objectIdInfo;
    }

    @Override
    public SettableBeanProperty withValueDeserializer(JsonDeserializer deser) {
        return new ObjectIdReferenceProperty(this, deser);
    }

    @Override
    public SettableBeanProperty withName(PropertyName newName) {
        return new ObjectIdReferenceProperty(this, newName);
    }

    @Override
    public  A getAnnotation(Class acls) {
        return _forward.getAnnotation(acls);
    }

    @Override
    public AnnotatedMember getMember() {
        return _forward.getMember();
    }

    @Override
    public void deserializeAndSet(JsonParser jp, DeserializationContext ctxt, Object instance)
        throws IOException, JsonProcessingException
    {
        deserializeSetAndReturn(jp, ctxt, instance);
    }

    @Override
    public Object deserializeSetAndReturn(JsonParser jp, DeserializationContext ctxt, Object instance)
        throws IOException, JsonProcessingException
    {
        boolean usingIdentityInfo = (_objectIdInfo != null) || (_valueDeserializer.getObjectIdReader() != null);
        try {
            return setAndReturn(instance, deserialize(jp, ctxt));
        } catch (UnresolvedForwardReference reference) {
            if (!usingIdentityInfo) {
                throw JsonMappingException.from(jp, "Unresolved forward reference but no identity info.", reference);
            }
            reference.getRoid().appendReferring(new PropertyReferring(this, reference, _type.getRawClass(), instance));
            return null;
        }
    }

    @Override
    public void set(Object instance, Object value) throws IOException {
        _forward.set(instance, value);
    }

    @Override
    public Object setAndReturn(Object instance, Object value) throws IOException {
        return _forward.setAndReturn(instance, value);
    }

    public final static class PropertyReferring extends Referring {
        private final ObjectIdReferenceProperty _parent;
        public final Object _pojo;

        public PropertyReferring(ObjectIdReferenceProperty parent,
                UnresolvedForwardReference ref, Class type, Object ob)
        {
            super(ref, type);
            _parent = parent;
            _pojo = ob;
        }

        @Override
        public void handleResolvedForwardReference(Object id, Object value) throws IOException
        {
            if (!hasId(id)) {
                throw new IllegalArgumentException("Trying to resolve a forward reference with id [" + id
                        + "] that wasn't previously seen as unresolved.");
            }
            _parent.set(_pojo, value);
        }
    }
}
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