Define limit and offset on the Query: return em.createQuery(query) .setFirstResult(offset) // offset .setMaxResults(limit) // limit .getResultList(); From the documentation: TypedQuery setFirstResult(int startPosition) Set the position of the first result to retrieve. Parameters: startPosition – position of the first result, numbered from 0 TypedQuery setMaxResults(int maxResult) Set the maximum number of results to retrieve.
What you are doing will not work for root user. Maybe you are running your services as root and hence you don’t get to see the change. To increase the ulimit for root user you should replace the * by root. * does not apply for root user. Rest is the same as you did. … Read more
The issue will be always present in Windows, to keep compatibility with old software. Use the NT-style name syntax “\\?\D:\very long path” to workaround this issue. Starting with Windows 10 (Version 1607 – Anniversary Update) and Windows Server 2016 you have an option to ignore the MAX_PATH issue by overriding a group policy entry enable … Read more
Using FETCH FIRST [n] ROWS ONLY: http://publib.boulder.ibm.com/infocenter/dzichelp/v2r2/index.jsp?topic=/com.ibm.db29.doc.perf/db2z_fetchfirstnrows.htm SELECT LASTNAME, FIRSTNAME, EMPNO, SALARY FROM EMP ORDER BY SALARY DESC FETCH FIRST 20 ROWS ONLY; To get ranges, you’d have to use ROW_NUMBER() (since v5r4) and use that within the WHERE clause: (stolen from here: http://www.justskins.com/forums/db2-select-how-to-123209.html) SELECT code, name, address FROM ( SELECT row_number() OVER ( ORDER … Read more
What you are looking for is called Bandwidth throttling And here is a good example how is this done, also review the comments to know how it is done from a client side. You may also want to take a look at this example too, putting things in a real application
There are many ways, one is to use a counter: $i = 0; foreach ($arr as $k => $v) { /* Do stuff */ if (++$i == 2) break; } Other way would be to slice the first 2 elements, this isn’t as efficient though: foreach (array_slice($arr, 0, 2) as $k => $v) { /* … Read more
Question 1: Restrict to certain characters You are right, this is easy to solve with regular expressions: import re input_str = raw_input(“Please provide some info: “) if not re.match(“^[a-z]*$”, input_str): print “Error! Only letters a-z allowed!” sys.exit() Question 2: Restrict to certain length As Tim mentioned correctly, you can do this by adapting the regular … Read more
You can do like this: $sql = SELECT * FROM tbl_news ORDER BY date DESC LIMIT :start, :rows”; $q = $db->prepare($sql); $q->bindParam(‘:start’, $start, PDO::PARAM_INT); $q->bindParam(‘:rows’,$rows, PDO::PARAM_INT);
One thing you could do (this of course depends on what you are trying to accomplish) is: Store the necessary information (i.e. like a loop counter) in a spreadsheet or another permanent store(i.e. ScriptProperties). Have your script terminate every five minutes or so. Set up a time driven trigger to run the script every five … Read more
From http://dev.w3.org/html5/webstorage/#disk-space A mostly arbitrary limit of five megabytes per origin is recommended. Implementation feedback is welcome and will be used to update this suggestion in the future. It also mentions that : User agents should guard against sites storing data under the origins other affiliated sites, e.g. storing up to the limit in a1.example.com, … Read more