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https://issues.apache.org/jira/browse/OLINGO-1183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16643809#comment-16643809
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Allen Laack commented on OLINGO-1183:
-------------------------------------
Patrick, that would be great!
For anyone using eclipselink and an Oracle DB, the following code change might
help in the short term:
update org.eclipse.persistence.internal.databaseaccess.DatabaseCall.java's
getSQLString() with :
String returnVal = sqlString;
int limit = Integer.parseInt(System.getProperty("acme.odata.rownum.max","1001");
if (returnVal.indexOf(" AND ROWNUM <= ") < 0 && limit > 0 ) {
returnValue = returnVal.replace(" ORDER BY "," AND ROWNUM <= "+limit+" ORDER
BY ") ;
}
return returnValue;
/* If your use case requires a client that pages through more than 1001
records, this will not work for you though. */
> JPAPage - Load all entities from DB, no paging on DB query
> ----------------------------------------------------------
>
> Key: OLINGO-1183
> URL: https://issues.apache.org/jira/browse/OLINGO-1183
> Project: Olingo
> Issue Type: Bug
> Components: odata2-jpa
> Affects Versions: V2 2.0.8, V2 2.0.9
> Reporter: Francesco longhitano
> Priority: Major
>
> If i using the paging with $top, $skip and $inlinecount=allpages the class
> JPAPage load all entities from DB (howewer filtered by the where), no setting
> on top and skip for paginated query directly from db. That's a problem if the
> query return many result (in our case ~100000 of complex entity).
> I'm looking into the code and the problem is not so easy to resolve. The
> inlinecount is managed by ODataJPAResponseBuilderDefault, as an size() called
> on the result of query. Then if there is top or skip the class do a filter on
> the result list, to return to client only the correct entities. So even if i
> correct set top and skip on JPAPage modifing the method handlePaging using an
> custom implementation of JPAProcessor, then the result __count show an wrong
> result.
> Example URL
> Entities?$skip=10&$top=10&$inlinecount=allpages
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