XComp commented on code in PR #23490:
URL: https://github.com/apache/flink/pull/23490#discussion_r1388279563
##########
flink-core/src/main/java/org/apache/flink/api/java/typeutils/runtime/PojoSerializer.java:
##########
@@ -473,25 +521,41 @@ public T deserialize(T reuse, DataInputView source)
throws IOException {
}
}
- if ((flags & NO_SUBCLASS) != 0) {
+ if (isRecord()) {
try {
+ JavaRecordBuilderFactory<T>.JavaRecordBuilder builder =
recordFactory.newBuilder();
for (int i = 0; i < numFields; i++) {
boolean isNull = source.readBoolean();
if (fields[i] != null) {
if (isNull) {
- fields[i].set(reuse, null);
+ builder.setField(i, null);
} else {
- Object field;
+ Object reuseField = reuse == null ? null :
fields[i].get(reuse);
+ builder.setField(i, deserializeField(reuseField,
i, source));
+ }
+ } else if (!isNull) {
+ // read and dump a pre-existing field value
+ fieldSerializers[i].deserialize(source);
+ }
+ }
- Object reuseField = fields[i].get(reuse);
- if (reuseField != null) {
- field =
fieldSerializers[i].deserialize(reuseField, source);
- } else {
- field =
fieldSerializers[i].deserialize(source);
- }
+ reuse = builder.build();
+ } catch (IllegalAccessException e) {
+ throw new RuntimeException(
+ "Error during POJO copy, this should not happen since
we check the fields before.",
+ e);
+ }
+ } else if ((flags & NO_SUBCLASS) != 0) {
Review Comment:
test
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