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The XML header in the preceding persistence unit configuration file declares what schema should be used, and it s always the same. We ll omit it in future examples and assume that you ll add it.

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A persistence unit is further configured with an arbitrary number of properties, which are all vendor-specific. The property in the previous example, hibernate.ejb.cfgfile, acts as a catchall. It refers to a hibernate.cfg.xml file (in the root of the classpath) that contains all settings for this persistence unit you re reusing the existing Hibernate configuration. Later, you ll move all configuration details into the persistence.xml file, but for now you re more interested in running Hello World with JPA. The JPA standard says that the persistence.xml file needs to be present in the META-INF directory of a deployed persistence unit. Because you aren t really packaging and deploying the persistence unit, this means that you have to copy persistence.xml into a META-INF directory of the build output directory. Modify your build.xml, and add the following to the copymetafiles target:

Marcel s computer is experiencing a Stop error when it starts. However, the computer is restarting each time it encounters this error, causing an endless loop.

Answer D is correct because you can add the URL of the client Web site to the list in the Use Policy list of Internet Explorer 7 sites policy. Answer A is incorrect because it turns off Compatibility View. Answer B is incorrect because the client Web site might not be included in the lists obtained from Microsoft. Answer C is incorrect because turning on Standards Mode would affect all sites, not just the one experiencing a problem.

2. You can start Marcel s computer successfully in safe mode. You want to see the Stop error. What should you do

<property name="src.etc.dir" value="etc"/> <target name="copymetafiles"> <!-- Copy metadata to build --> <copy todir="${build.dir}"> <fileset dir="${src.java.dir}"> <patternset refid="meta.files"/> </fileset> </copy>

You should use the Startup and Recovery dialog box to clear the Automatically Restart check box in the System Failure section. This action will prevent Marcel s computer from restarting when it encounters the error, giving you time to see the actual error.

3. After researching the Stop error on Marcel s computer, you have determined that a damaged paging file is causing the stop error. You need to remove the paging file from Marcel s computer. How would you do this

<!-- Copy configuration files from etc/ --> <copy todir="${build.dir}"> <fileset dir="${src.etc.dir}"> <patternset refid="meta.files"/> </fileset> </copy> </target>

You should use the Virtual Memory dialog box (available via the Advanced tab in the Performance Options dialog box). In the Paging File Size For Selected Drive section, you should click No Paging File, click Set, and then exit the dialog boxes that are open. You should then restart the computer.

4. After removing the damaged paging file, you need to create a new paging file. You want Windows to manage the paging file size. How would you do this

Everything found in WORKDIR/etc that matches the meta.files pattern is copied to the build output directory, which is part of the classpath at runtime. Let s rewrite the main application code with JPA. Hello World with JPA These are your primary programming interfaces in Java Persistence:

You should open the Virtual Memory dialog box again. In the Paging File Size For Selected Drive section, you should click System Managed Size, click Set, and then exit the dialog boxes that are open. You should then restart the computer.

Monitor, configure, and troubleshoot I/O devices, such as printers, scanners, multimedia devices, mouse, keyboard, and smart card reader. Monitor, configure, and troubleshoot multimedia hardware, such as cameras. Install, configure, and manage Infrared Data Association (IrDA) devices. Install, configure, and manage universal serial bus (USB) devices. Install, configure, and manage handheld devices.

javax.persistence.Persistence A startup class that provides a static method for the creation of an EntityManagerFactory. javax.persistence.EntityManagerFactory The equivalent to a Hibernate SessionFactory. This runtime object represents a particular persis-