#3701 Improve error message when missing dependency ebean-jackson-mapper (#3708)

rbygrave · web-flow · commit ff0ca35e54ec · 2025-11-23T20:25:16.000+13:00
diff --git a/ebean-core/src/main/java/io/ebeaninternal/server/type/DefaultTypeManager.java b/ebean-core/src/main/java/io/ebeaninternal/server/type/DefaultTypeManager.java
@@ -374,7 +374,7 @@ private boolean isMapValueTypeObject(Type genericType) {
 
   private ScalarType<?> createJsonObjectMapperType(DeployBeanProperty prop, int dbType, DocPropertyType docType) {
     if (jsonMapper == null) {
-      throw new IllegalArgumentException("Unsupported @DbJson mapping - Jackson ObjectMapper not present for " + prop);
+      throw new IllegalArgumentException("Unsupported @DbJson mapping - Missing dependency ebean-jackson-mapper? Jackson ObjectMapper not present for " + prop);
     }
     if (MutationDetection.DEFAULT == prop.getMutationDetection()) {
       prop.setMutationDetection(jsonManager.mutationDetection());

Original file line number	Diff line number	Diff line change
`@@ -374,7 +374,7 @@ private boolean isMapValueTypeObject(Type genericType) {`
`374`	`374`
`375`	`375`	`private ScalarType<?> createJsonObjectMapperType(DeployBeanProperty prop, int dbType, DocPropertyType docType) {`
`376`	`376`	`if (jsonMapper == null) {`
`377`		`- throw new IllegalArgumentException("Unsupported @DbJson mapping - Jackson ObjectMapper not present for " + prop);`
	`377`	`+ throw new IllegalArgumentException("Unsupported @DbJson mapping - Missing dependency ebean-jackson-mapper? Jackson ObjectMapper not present for " + prop);`
`378`	`378`	`}`
`379`	`379`	`if (MutationDetection.DEFAULT == prop.getMutationDetection()) {`
`380`	`380`	`prop.setMutationDetection(jsonManager.mutationDetection());`