Fast Object Database for Java - with JPA/JDO support

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8

javax.jdo.PersistenceManagerFactory

: the name of the data store connection factory. Since: JDO 1.0 String getConnectionURL() Get the URL for the data store connection. Get the URL for the data store connection. Returns: the URL for the data ... . Since: JDO 1.0 void setConnectionURL(String url) Set the URL for the data store connection. Set the URL
8

getPersistenceUnitRootUrl()

Method javax.persistence.spi.PersistenceUnitInfo URL getPersistenceUnitRootUrl() Returns the URL ... is rooted in the WEB-INF/classes directory, this will be the URL of that directory.) The URL will either be a file: URL referring to a jar file or referring to a directory that contains an exploded jar
8

getJarFileUrls()

Method javax.persistence.spi.PersistenceUnitInfo List<URL> getJarFileUrls() Returns a list of URLs ... for managed classes of the persistence unit. Each URL corresponds to a jar-file element in the persistence.xml file. A URL will either be a file: URL referring to a jar file or referring to a directory
6

javax.jdo.Constants

"connection-password" attribute. Since: JDO 2.1 String PMF_ATTRIBUTE_CONNECTION_URL The name of the persistence manager factory element's "connection-url" attribute. The name of the persistence manager factory element's "connection-url" attribute. Since: JDO 2.1 String PMF_ATTRIBUTE_CONNECTION_USER_NAME
4

getConnectionURL()

Method javax.jdo.PersistenceManagerFactory String getConnectionURL() Get the URL for the data store connection. Returns: the URL for the data store connection. Since: JDO 1.0
4

getClassLoader()

Method javax.persistence.spi.PersistenceUnitInfo ClassLoader getClassLoader() Returns ClassLoader that the provider may use to load any classes, resources, or open URLs. Returns: ClassLoader that the provider may use to load any classes, resources, or open URLs Since: JPA 1.0
3

How to change properties in urls2.xml?

see it exists a file name "urls2.xml". <url>
/var/lib/tomcat7/db/myDb.odb;user=admin;password ... -dabc42877742 url> This file is autogenerated by objectdb. And it describes the locals databases url and their port / user / password properties. I have no control on the port and password used
3

Database size is much larger than expected (x2)

Url = http://cimg2.163.com/catchpic/E/E9/E96492634557CE291CDF3AADC710F373.jpg NO = 155648 @ 8042217472 id = 0 @ 8016831165 Url = http://pic.tiexue.net/pics/2005_10_19_99028_599028.jpg ... @ 8042217472 id = 256 @ 15621180 Url = http://www.jspet.com.cn/UploadThumbs/200459214931523.jpg
3

getNewTempClassLoader()

Method javax.persistence.spi.PersistenceUnitInfo ClassLoader getNewTempClassLoader() Return a new instance of a ClassLoader that the provider may use to temporarily load any classes, resources, or open URLs. The scope and classpath of this loader is exactly the same as that of the loader returned
2

EntityManagerFactory Fails To Swtich Over To Slave When Master Is Unavailable

to try the second URL in the list: objectdb://10.9.2.15:9998//10.9.2.15:9999/test.odb;user=admin ... " threshold="64mb" />                                 <url-history ... inactivity-timeout="5" />                 <url-history size="50" user="true" password="true

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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