I want to retrieve all the files from a cabinet (called 'Wombat Insurance Co'). Currently I am using this DQL query:
select r_object_id, object_name from dm_document(all)
where folder('/Wombat Insurance Co', descend);
This is ok except it only returns a maximum of 100 results. If there are 5000 files in the cabinet I want to get all 5000 results. Is there a way to use pagination to get all the results?
I have tried this query:
select r_object_id, object_name from dm_document(all)
where folder('/Wombat Insurance Co', descend)
ENABLE (RETURN_RANGE 0 100 'r_object_id DESC');
with the intention of getting results in 100 file increments, but this query gives me an error when I try to execute it. The error says this:
com.emc.documentum.fs.services.core.CoreServiceException: "QUERY" action failed.
java.lang.Exception: [DM_QUERY2_E_UNRECOGNIZED_HINT]error:
"RETURN_RANGE is an unknown hint or is being used incorrectly."
I think I am using the RETURN_RANGE hint correctly, but maybe I'm not. Any help would be appreciated!
I have also tried using the hint ENABLE(FETCH_ALL_RESULTS 0)
but this still only returns a maximum of 100 results.
To clarify, my question is: how can I get all the files from a cabinet?
Aha, I've figured it out. Using DFS with Java (an abstraction layer on top of DFC) you can set the starting index for query results:
String queryStr = "select r_object_id, object_name from dm_document(all)
where folder('/Wombat Insurance Co', descend);"
PassthroughQuery query = new PassthroughQuery();
query.setQueryString(queryStr);
query.addRepository(repositoryStr);
QueryExecution queryEx = new QueryExecution();
queryEx.setCacheStrategyType(CacheStrategyType.DEFAULT_CACHE_STRATEGY);
queryEx.setStartingIndex(currentIndex); // set start index here
OperationOptions operationOptions = null;
// will return 100 results starting from currentIndex
QueryResult queryResult = queryService.execute(query, queryEx, operationOptions);
You can just increment the currentIndex
variable to get all results.