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JaversException CLASS_MAPPING_ERROR when committing generic-tuple-like object #948

stun4j opened this issue Mar 21, 2020 · 1 comment


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@stun4j stun4j commented Mar 21, 2020

I found org.javers.core.Javers#commit not works when committing generic-tuple-like object(i.e. org.apache.commons.lang3.tuple.MutablePair etc.)

This exception can be reproduced using the following simple test case:

class Case948CommitGenericTupleLikeObject extends Specification {
    class Pair<L, R> {
        L left;
        R right;

        public Pair(L left, R right) {
            this.left = left;
            this.right = right;

        public String toString() {
            return "Pair [left=" + left + ", right=" + right + "]";

    def "should tracking work when committing generic-tuple-like object"(){
        Javers javers = JaversBuilder.javers().build();
        //Pair<Long, String> obj = org.apache.commons.lang3.tuple.MutablePair.of(1L, "foo");
        Pair<Long, String> obj = new Pair<>(1L, "foo");
        //    Map<Long,String> obj = new HashMap();
        //    obj.put(1L, "foo")

        javers.commit("jay", obj);

        obj.right = "bar";
        //    obj.put(1L, "bar")

        Commit commit = javers.commit("jay", obj);

        commit.getChanges().size() == 1
@stun4j stun4j changed the title JaversException CLASS_MAPPING_ERROR when committing tuple-like object JaversException CLASS_MAPPING_ERROR when committing generic-tuple-like object Mar 21, 2020
bartoszwalacik added a commit that referenced this issue Apr 6, 2020
#948 better support for Type t…
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@bartoszwalacik bartoszwalacik commented Apr 7, 2020

fixed in 5.8.13

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