Skip to main content

Java Data Objects

Image
By
JDO has nothing to do with where methods are executed. JDO simply specifies how the fields of a petent object should be managed in-memory, being transparently stored to and retrieved from an underlying datastore. With JDO, methods are invoked on persistent object by an application, as per any regular in-memory Java object.

JDO has many implementations. Visit the following link to know about the available implementations.

http://db.apache.org/jdo/impls.html
Labels:

Comments

Post a Comment

Popular posts from this blog

svn credentials caching

By
SVN client has a built-in system for caching authentication credentials on disk. It saves the credentials in the user's private runtime configuration area ~/.subversion/auth/ (Unix-like systems) %APPDATA%/Subversion/auth/ (Windows) If you dont want to catch the credeitials for a commit, use --no-auth-cache. $ svn commit --no-auth-cache Here we are telling the svn client that dont cach authentication credentials. You can disable credential caching permanently by editing your runtime config file (located next to the auth/ directory). Set store-auth-creds to no. [auth] store-auth-creds = no
Post a Comment
Read more

log4j - use logger instead of category

By
Do not use 'category'. In log4j 1.2, the Category class has marked as being deprecated and has been replaced by the Logger class. I am using log4j-1.2.14.jar and category didn't work for me. Example: <logger name="com.test.pkg1"><level value="INFO"/></logger> <logger name="com.test.pkg2"><level value="INFO"/></logger> Was: <category name="com.test.pkg1"><priority value="INFO"/></category> <category name="com.test.pkg2"><priority value="INFO"/></category>
Post a Comment
Read more