BasicClassIntrospector.forSerialization(...).findProperties should respect MapperFeature.AUTO_DETECT_GETTERS/SETTERS

[headw01]

When I set the ObjectMapper MapperConfig to not AutoDetect and use the BasicClassIntrospector to get the properties, I seem to still be getting the Methods. I am currently using version 2.7.3.

The following code produces this output:
Found property count 2, there should only be one??
Found property: name=name, internalName=name
Found property: name=groupname, internalName=groupname

I think it should produce only this output:
Found property: name=groupname, internalName=groupname

public static void main(String [] args) {
    class TCls {
        @JsonProperty("groupname")
        private String groupname;

        public void setName(String str) {
            this.groupname = str;
        }
        public String getName() {
            return groupname;
        }
    }

    ObjectMapper om = new ObjectMapper();
    // Only use explicitly specified values to be serialized/deserialized (i.e., JSONProperty).
    om.configure(com.fasterxml.jackson.databind.MapperFeature.AUTO_DETECT_FIELDS, false);
    om.configure(com.fasterxml.jackson.databind.MapperFeature.AUTO_DETECT_GETTERS, false);
    om.configure(com.fasterxml.jackson.databind.MapperFeature.AUTO_DETECT_SETTERS, false);
    om.configure(com.fasterxml.jackson.databind.MapperFeature.AUTO_DETECT_IS_GETTERS, false);
    om.configure(com.fasterxml.jackson.databind.MapperFeature.USE_GETTERS_AS_SETTERS, false);
    om.configure(com.fasterxml.jackson.databind.MapperFeature.CAN_OVERRIDE_ACCESS_MODIFIERS, true);
    om.configure(com.fasterxml.jackson.databind.MapperFeature.INFER_PROPERTY_MUTATORS, false);
    om.configure(com.fasterxml.jackson.databind.MapperFeature.USE_ANNOTATIONS, true);

    JavaType javaType = om.getTypeFactory().constructType(TCls.class);

    BasicClassIntrospector introspector = new BasicClassIntrospector();
    BasicBeanDescription bdesc = introspector.forSerialization(om.getSerializationConfig(), javaType, null);
    List<BeanPropertyDefinition> bprops = bdesc.findProperties();

    if (1 != bprops.size()) {
        System.out.println("Found property count " + bprops.size() + ", there should only be one??");
    }
    bprops.forEach(prop -> {
        System.out.println("Found property: name=" + prop.getName() + ", internalName=" + prop.getInternalName());
    });
}

[cowtowncoder]

@headw01 with quick look, that looks like a flaw: if you disable auto-detection, only groupname should be found.

More common way nowadays is to set visibility levels low enough (to Visibility.NONE), but method you show should still also work.

[cowtowncoder]

Actually if you try serialization, only one property is serialized, so I think this has more to do with introspection: mechanism you are using is not quite how Jackson itself detects properties. I'll check out this bit more and code sample of how introspection would work.

[cowtowncoder]

Actually I take that back: access is just fine. But it does look like there is a minor flaw in handling; due to (earlier) optimizations, auto-detection settings are only considered for "relevant" parts, and setter-visibility is not considered relevant for serialization. Long story short, this leads to setName() being considered visible, which adds name property. Later on property collector will remove it so it is not being used, and this is why no issues have been reported, but the removal should really occur earlier.

So I think I'll have a fix to make here. Just need to think carefully whether fix is safe to add for 2.7.5, or just 2.8.0.