Tech Tips and Tricks
Full-import http://<host>:<port>/solr/dataimport?command=full-import Delta-import http://<host>:<port>/solr/dataimport?command=delta-import status http://<host>:<port>/solr/dataimport reload-config http://<host>:<port>/solr/dataimport?command=reload-config abort http://<host>:<port>/solr/dataimport?command=abort
I found an interesting link which helped me to speed up the eclipse loading time. Let me know if that helped you.
Using JNDI javax.naming.Context context = new javax.naming.InitialContext(); javax.sql.DataSource ds = (javax.sql.DataSource) context.lookup(“java:comp/env/jdbc/XXXJNDINAMEXXX”); java.sql.Connection con = ds.getConnection();
The only way I could figure out to get the distinct list using Hibernate Criteria is by using ResultTransformer function. eg. List result = session.createCriteria(Order.class) .setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY) ——- .list(); The con is it fetches all the objects and then filters it. Continue reading Hibernate get distinct list with Criteria
public String replaceAll(String regex, String replacement) This method works fine if replacement string does not contain ‘$’ or ‘/’ characters.If replacement string contains these characters, the results can be in-accurate. Fix: Use Matcher.quoteReplacement(replacement) public String replaceAll(String regex, Matcher.quoteReplacement(replacement))
For System Wide settings To see the settings for maximum open files for the OS level, use following command. cat /proc/sys/fs/file-max This should be a value from 36000 to 50000 or more. To increase the system wide maximum open files, Continue reading java.net.SocketException: Too many open files
for original post go here. Strong references First I need to start with a refresher on strong references. A strong reference is an ordinary Java reference, the kind you use every day. For example, the code: StringBuffer buffer = new Continue reading Weak References
Using the in-built zip function of java, attached is a sample code to copy a folder and all its sub-folders into a zip file. Java Program to Zip a folder This program uses Commons IO – IOUtils library to copy Continue reading How to Zip a folder in Java
Google provides a feed url to check your new mail(s) in your inbox. The url is https://gmail.google.com/gmail/feed/atom. You would need to authenticate first with your gmail username and password and it will list the unread email(s). I was reading about Continue reading How to check GMail RSS/Atom feed
Struts uses ActionForm to both populate a HTML form, and then to capture the parameters when a form is submitted. When a request is submitted, the ActionServlet matches the URI for the request against the path of an action-mapping. If Continue reading ActionForm – Reset multiple list <html:select multiple=”true”>