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I'm using the Kundera tutorial at https://github.com/impetus-opensource/Kundera/wiki/Getting-Started-in-5-minutes. Eclipse does not find it when I create a folder META-INF at the project root and place persistence.xml in it.
I did a quick search and there was no real solution posted.
There is no valid reason why a simple file path should be difficult to configure. I'm looking for a simple answer to what should be a simple issue.
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In many cases, JAR files are not just simple archives of java classes files and/or resources. They are used as building blocks for applications and extensions. The META-INF directory, if it exists, is used to store package and extension configuration data, including security, versioning, extension and services.
META-INF is intended to contain the MANIFEST. MF file and the services subdirectory related to the ServiceLoader class, but other frameworks, including Spring, use it as well.
Jar files are used by all types of java applications, they have a specific structure - the META-INF folder contains the manifest information and other metadata about the java package carried by the jar file.
It shouldn't be at the project root, but directly under the source folder.
At runtime, the persistence.xml file is searched in the classpath, under META-INF. So if you want the META-INF folder to be put at the top of the compiled package tree, you need to put it at the top of the source tree. Eclipse copies every non-Java file to its output directory (bin, by default), respecting the package/folder hierarchy.
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Basically it has to be in your classpath(under /META-INF/). You can manually enable it in eclipse by configuring properties. If your project is maven based, then it should be automatically picked from /src/main/resources/META-INF/ folder (provided entities are under the same hood).
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