java - JMapper how to create a convertion from Date to LocalDateTime -

i'm trying make jmapper convertion class source destination, in source have date , in destination localdatetime.

reading docs of jmapper logical way make convertion. covertion based on solution question doesn't work , null on destination date.

now code

// source entity @entity @table(name = "source") public class source {      @id     @generatedvalue(strategy = generationtype.identity)     @column     private long id;         @column     private string name;     @column     private date date;      // ommited getters , setters  } // destination entity public class destination {     private long id;     private string name;     private localdatetime date;      // ommited getters , setters }  // mapping api jmapperapi = new jmapperapi(); conversion datetolocaldatetime = conversion("datetolocaldatetime")                 .from("date").to("date").type(jmapconversion.type.static)                 .body("return java.time.localdatetime.ofinstant(${source}.toinstant(), java.time.zoneid.systemdefault())"); jmapperapi.add(mappedclass(destination.class).add(global()                 .excludedattributes("date"))                 .add(datetolocaldatetime));  // converting mapper = new jmapper<>(destination.class, source.class, jmapperapi); mapper.getdestination(source); 

finally found answer on question,

first making 2 mistakes, first assumed had exclude field global mapping doesn't have excluded when using convertions.

and second assuming jmapper "only 1 way convertion" attribute same name in source , in destination class "date".

what jmapper takes convertion , validates if can applied when converting (in case) date localdatetime , localdatetime date.

given had define 2 convertions 1 when converting date localdatetime , when converting localdatetime date achieve first changed name of destination field, because seems there no other way make difference between convertion applied 1 way or another

this code works:

// source entity @entity @table(name = "source") public class source {      @id     @generatedvalue(strategy = generationtype.identity)     @column     private long id;         @column     private string name;     @column     private date date;      // ommited getters , setters  } // destination entity public class destination {     private long id;     private string name;     private localdatetime localdatetime;      // ommited getters , setters }  // mapping api jmapperapi = new jmapperapi();  jmapperapi.add(mappedclass(destination.class).add(global()                     .excludedattributes("localdatetime"))                     .add(attribute("localdatetime").targetattributes("date"))                     .add(conversion("datetolocaldatetime")                             .from("date").to("localdatetime")                             .type(jmapconversion.type.dynamic)                             .body("java.time.instant instant = ${source}.toinstant();" +                                     "${destination.type} result = java.time.localdatetime.ofinstant(instant, java.time.zoneid.systemdefault());" +                                     "return result;"))                     .add(conversion("localdatetimetodate")                             .from("localdatetime").to("date")                             .type(jmapconversion.type.dynamic)                             .body("java.time.instant instant = ${source}.atzone(java.time.zoneid.systemdefault()).toinstant();" +                                     "${destination.type} result = java.util.date.from(instant);" +                                     "return result;")));