-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Jose,
On 4/29/13 9:30 AM, Jose María Zaragoza wrote: > Now , I want to use JDBC Pool with a new web application deployed > on that Tomcat 6. So, I consider it as an standalone application, > and I use org.apache.tomcat.jdbc.pool.DataSource class ( I use > Spring-MyBatis to configure datasource , injecting it as a bean) If you are using Spring-MyBatis to configure the DataSource, then Tomcat has nothing to do with it (other than you are using Tomcat's jdbc-pool as a library). > I've read in Tomcat 7 JDBC pool documentation that testOnBorrow is > false by default in this case Is it right ? The default for testOnBorrow is false in all cases, including this one. > Must I define testOnBorrow = true explicitly ? If you want to enable testOnBorrow, then yes, you must define it explicitly. > It's little bit strange that default values be different either > access by JNDI or bean instantiation I don't see any inconsistency. The default values are different for Tomcat's jdbc-pool and commons-dbcp, but they are different libraries so different defaults isn't be unexpected. Given that Tomcat's jdbc-pool should be a drop-in replacement for commons-dbcp, I would have expected the defaults to be the same, but in this case the authors chose not to do this (probably to reduce the in-memory footprint of jdbc-pool under its default configuration, because I believe testOnBorrow is implemented as an interceptor so every object check-out goes through another method call). Also, testOnBorrow is a fairly wasteful configuration given that most pools have a lot of activity. Checking a connection on a schedule is much more efficient than testing every single check-out. > Should I use org.apache.tomcat.jdbc.pool.DataSourceFactory instead > of org.apache.tomcat.jdbc.pool.DataSource ? Why? An object of the DataSourceFactory class produces objects of the DataSource class. I don't believe they are interchangeable. > My doubt is if one is better than other in performance terms > > Should I use META-INF/context.xml and to use <Resource> ? If you want to use <Resource>, then don't use Spring-MyBatis to configure the DataSource... only to inject it into your data service objects. You'll still have to configure it /properly/, though. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJRfofiAAoJEBzwKT+lPKRYaNwQAKUNqTTgp0ivZhz2j4af2MHD xlTr8cNAUl0jSLHJFQuagMVFHLt9pPsLvaWxfx+NCOS/jgPb5dQcmoWPXW/hw1MR xvIL45CmF8DUoo3Cl1f36ajCqpkxm40aYWJ7D1czc2vysr+9OAno8ZGPt9vG4Llb lNps2nyGmt1CtXWLQwL2kiBuYruZ6GEE47aVNESBQ4q3FiPNoX1emVBbBCNBSGi0 mlsCh4gNnfcTtvbj+3RQBPXSfXUVE/uf8t1c7c4w1UDkrt3LcLRKjtQchSRSy/tU bHc70nw8XsQPax9SalxIY2vmfy0/adQAuH+gTqdCt9e4G2HihGGYl3Od83Goh0Z3 Rm5VK+e4WWqKxUpreVBgz14farB2zCOnKbDlEm7TGLUrm4ebMEMBhbHAqYGsG5/P bfsce9La8U15fY6HAepqAtAGVt1xwUwOgQ0E1y3G2LJ5l9vLw5jsltpzC7sF760c M+a7HMYU9PEfw/xcmWgkRtap6skE7RGwnteI864en7lM3DYusxAVHFwptu9FYW3t eucWd7BT6l7EfmEVf5/K+tBKJld9irUP/iOcL9Cndf8uz05oFo8QyxLtHlVzkw5k v4MCjZQi9hP8vkGfAAW/N9pN/mommEVMtLvGB2M011kRsp+1kRitjqJWChKpuD2v S8g0n6RQuGyvvBaI6EaT =axfr -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
