+ try {
+ for(int i = 0; i < size; i++) {
+ byte type = in.readByte();
+ switch(type) {
+ case Modification.WRITE:
+ modifications.add(WriteModification.fromStream(in, getVersion()));
+ break;
+
+ case Modification.MERGE:
+ modifications.add(MergeModification.fromStream(in, getVersion()));
+ break;
+
+ case Modification.DELETE:
+ modifications.add(DeleteModification.fromStream(in, getVersion()));
+ break;
+ }
+ }
+ } finally {
+ SerializationUtils.REUSABLE_READER_TL.remove();
+ }
+ }
+
+ @Override
+ public void writeExternal(ObjectOutput out) throws IOException {
+ super.writeExternal(out);
+
+ out.writeInt(modifications.size());
+
+ if(modifications.size() > 1) {
+ SerializationUtils.REUSABLE_WRITER_TL.set(NormalizedNodeInputOutput.newDataOutput(out));
+ }
+
+ try {
+ for(Modification mod: modifications) {
+ out.writeByte(mod.getType());
+ mod.writeExternal(out);
+ }
+ } finally {
+ SerializationUtils.REUSABLE_WRITER_TL.remove();
+ }
+ }
+
+ @Override
+ @Deprecated
+ protected Object newLegacySerializedInstance() {
+ if(getVersion() >= DataStoreVersions.LITHIUM_VERSION) {
+ return this;
+ } else {
+ PersistentMessages.CompositeModification.Builder builder =
+ PersistentMessages.CompositeModification.newBuilder();
+
+ builder.setTimeStamp(System.nanoTime());
+
+ for (Modification m : modifications) {
+ builder.addModification((PersistentMessages.Modification) m.toSerializable());
+ }
+
+ return builder.build();
+ }
+ }
+
+ public static MutableCompositeModification fromSerializable(Object serializable) {
+ if(serializable instanceof MutableCompositeModification) {
+ return (MutableCompositeModification)serializable;
+ } else {
+ return fromLegacySerializable(serializable);
+ }