Hi Vince,
If I'm understanding the implementation of mapper.convertVaue(), I think it
doesn't matter whether it's on serialization or deserialization since
convertValue() does both.
To illustrate, let's say I have a pojo with one field and the
anySetter/anyGetter:
@JsonProperty("onlyField")
private String onlyField;
@JsonAnyGetter
public Map<String, Object> getAdditionalProperties() {
return this.additionalProperties;
}
@JsonAnySetter
public void setAdditionalProperty(String name, Object value) {
this.additionalProperties.put(name, value);
}
If I deserialize {"onlyField": "someValue", "additional": "anotherValue"},
I end up with a pojo with object.getOnlyField() == "someValue") and
object.getAdditionalProperties().get("additional") == "anotherValue")
Now when I call mapper.convertValue(object, MyPojo.class):
if I drop on serialization, I end up with a serialized object of
{"onlyField": "someValue"}
if I drop on deserialize, I start with a serialized object of
{"onlyField": "someValue", "additional": "anotherValue"} but end up with a
pojo with an empty map in object.getAditionalProperties().
If I can do it at either step, I'd love to know how, but either one will
solve my current problem.
Here's a gist with a sample, which currently fails:
https://gist.github.com/hancockks/02509e5d06b0f1d95b1e3e6c4a23a9f1
On Saturday, August 12, 2023 at 8:31:54 AM UTC-4 Joo Hyuk Kim (김주혁) wrote:
> Hello Ken,
>
> To make things clear, a few questions.
>
> - Meaning of "to strip any additional properties before writing an
> object". Are you looking to exclude `additionalProperties` only during
> serialization, but include in deserialization?
> - Is the primary intent to generate a JSON output that does not
> include `additionalProperties`, or is there another objective?
> - Could you also provide a simple, reproducible example using just
> Jackson and Java?
>
> Thanks,
>
> Joo Hyuk, Kim (Vince)
> On Saturday, August 12, 2023 at 1:31:13 AM UTC+9 Ken Hancock wrote:
>
>>
>> I have a pojo that serializes any additional properties into
>>
>> @JsonAnyGetter
>> public Map<String, Object> getAdditionalProperties() {
>> return this.additionalProperties;
>> }
>>
>> @JsonAnySetter
>> public void setAdditionalProperty(String name, Object value) {
>> this.additionalProperties.put(name, value);
>> }
>>
>> However, I have an odd use case where I want to be able to strip any
>> additional properties before writing an object. I'm fairly sure with all of
>> Jackson's configuration settings that I should be able to configure a
>> mapper such that mapper.convertValue(myPojo, MyPojo.class) should be able
>> to serialize and deserialize back again, dropping the additionalProperties
>> when it serializes? The pojo is deeply nested and auto-generated, so I'd
>> prefer not to hard-code having to just clear additionalProperties at each
>> sub-object.
>>
>> Thanks,
>>
>> Ken
>>
>
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