public <T extends RootEntity> void write(T entity, Callback cb) {
if (entity == null) return;
ModelType type = ModelType.forModelClass(entity.getClass());
if (type == null || entity.getRefId() == null) {
warn(cb, "no refId, or type is unknown", entity);
return;
}
if (conf.hasVisited(type, entity.getId())) return;
Writer<T> writer = getWriter(entity, conf);
if (writer == null) {
warn(cb, "no writer found for type " + type, entity);
return;
}
try {
conf.refFn =
ref -> {
write(ref, cb);
};
JsonObject obj = writer.write(entity);
conf.store.put(type, obj);
if (writer.isExportExternalFiles()) writeExternalFiles(entity, type, cb);
if (cb != null) cb.apply(Message.info("data set exported"), entity);
} catch (Exception e) {
e.printStackTrace();
if (cb != null) cb.apply(Message.error("failed to export data set", e), entity);
}
}
private void writeExternalFiles(RootEntity entity, ModelType type, Callback cb) {
if (entity == null
|| conf.db == null
|| conf.db.getFileStorageLocation() == null
|| conf.store == null) return;
FileStore fs = new FileStore(conf.db.getFileStorageLocation());
File dir = fs.getFolder(entity);
if (dir == null || !dir.exists()) return;
try {
Path dbDir = dir.toPath();
Copy copy = new Copy(entity.getRefId(), type, dbDir);
Files.walkFileTree(dir.toPath(), copy);
} catch (Exception e) {
cb.apply(Message.error("failed to copy external files", e), entity);
}
}
private void warn(Callback cb, String message, RootEntity entity) {
if (cb == null) return;
cb.apply(Message.warn(message), entity);
}