Michael Osipov created DBUTILS-126: -------------------------------------- Summary: Add iterable interface approach Key: DBUTILS-126 URL: https://issues.apache.org/jira/browse/DBUTILS-126 Project: Commons DbUtils Issue Type: New Feature Affects Versions: 1.5 Reporter: Michael Osipov
Currently, DbUtils allows to load all data at once into memory. In many cases, when dealing with 100 000+ records, this will cause an OOME. I have to iterate over 100 000 lines with 10 columns and retrieve subdata which are in turn indexed with Lucene. Because I cannot iterate over the entire dataset without memory problems, I have to retrieve them pagewise. (fiddling with rownums in Oracle). An iterator interface which streams this down from the DB to the client would solve such a problem, very much like [Spring JdbcTemplate extension that returns iterators|https://github.com/alexkasko/springjdbc-iterable]. This works very well in a Spring app downloading a table with two million records directly to the HTTP client without any buffers. -- This message was sent by Atlassian JIRA (v6.3.4#6332)