Jackson serialization for Interval

IntervalMixIn.java

import java.time.Instant;

import org.threeten.extra.Interval;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;

// Exclude JavaBean properties that are not part of the state
@JsonIgnoreProperties({ "empty", "unboundedStart", "unboundedEnd" })
// Jackson does not support @JsonCreator with mix-ins
// https://github.com/FasterXML/jackson-databind/issues/1820
// I use the private constructor instead
@JsonAutoDetect(creatorVisibility = JsonAutoDetect.Visibility.ANY)
public abstract class IntervalMixIn {

    public IntervalMixIn(@JsonProperty("start") Instant startInclusive,
            @JsonProperty("end") Instant endExclusive) {
    }
}

I mentioned this gist in the issue for Three Ten to implement a Jackson module.