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java Programming Glossary: persistencemanager

How to upload and store an image with google app engine (java)

http://stackoverflow.com/questions/1513603/how-to-upload-and-store-an-image-with-google-app-engine-java

new MyImage imageItem.getName imageBlob persist image PersistenceManager pm PMF.get .getPersistenceManager pm.makePersistent myImage.. imageBlob persist image PersistenceManager pm PMF.get .getPersistenceManager pm.makePersistent myImage pm.close respond to query res.setContentType.. String name HttpServletResponse res find desired image PersistenceManager pm PMF.get .getPersistenceManager Query query pm.newQuery select..

Update query in google app engine data store (java)

http://stackoverflow.com/questions/2679759/update-query-in-google-app-engine-data-store-java

java.util.List import javax.jdo.JDOHelper import javax.jdo.PersistenceManager import javax.jdo.PersistenceManagerFactory public class ContactJdoDAO.. import javax.jdo.PersistenceManager import javax.jdo.PersistenceManagerFactory public class ContactJdoDAO implements ContactDAO private.. ContactJdoDAO implements ContactDAO private static final PersistenceManagerFactory pmfInstance JDOHelper .getPersistenceManagerFactory transactions..

How to use JDO persistence manager?

http://stackoverflow.com/questions/4185382/how-to-use-jdo-persistence-manager

According to the JDO Documentation you create one PersistenceManagerFactory per datastore. If you are using JDO to access databases.. and you have more than one database then you will need one PersistenceManagerFactory per database since you need to specify the JDBC URL user.. the JDBC URL user name and password when you create the PersistenceManagerFactory . For simple use cases you can just create a PersistenceManager..

Problems passing class objects through GWT RPC

http://stackoverflow.com/questions/958879/problems-passing-class-objects-through-gwt-rpc

Stock stock new Stock getUser symbol checkLoggedIn PersistenceManager pm getPersistenceManager try pm.makePersistent stock finally.. getUser symbol checkLoggedIn PersistenceManager pm getPersistenceManager try pm.makePersistent stock finally pm.close return stock.getId.. getStocks throws NotLoggedInException checkLoggedIn PersistenceManager pm getPersistenceManager List StockClient stockclients new ArrayList..