| Title: Blog Sample |
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| <a name="BlogSample-TheBlogSample"></a> |
| # The Blog Sample |
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| <a name="BlogSample-RunningtheBlogSample"></a> |
| ## Running the Blog Sample |
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| <br> |
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| - - - |
| **Note:** |
| These instructions are for the current development stream of Aries. |
| Instructions for older releases can be found [here](/downloads/archived-releases.html) |
| Instructions for the current release of Aries can be found [here](/downloads/blogsample-0.3.html) |
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| - - - |
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| <a name="BlogSample-CreatetheOSGiplatformfortheBlogsample"></a> |
| ### Create the OSGi platform for the Blog sample |
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| Download and build the development stream of Aries, see [here](/development/buildingaries.html) |
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| cd samples/blog/blog-assembly/target |
| mkdir load |
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| The full Aries build builds the blog sample by default, all of the platform pre-reqs will be available in the target directory. |
| Create the load directory. This used to be done automatically by Felix file install, but in more recent |
| versions yo have to create your own. |
| <a name="BlogSample-RunningtheBlogsample"></a> |
| ### Running the Blog sample |
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| Start Aries in an OSGi framework (we're using Eclipse Equinox in this |
| case) |
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| java -jar osgi-3.5.0.v20090520.jar -console |
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| The OSGi console should start up, the 'ss' command should show all of the |
| platform bundles in state 'ACTIVE'. |
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| To run the blog application (.eba file) copy |
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| samples/blog/blog-jdbc-eba/target/*.eba |
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| into the load directory. |
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| Point your browser to [http://localhost:8080/blog/](http://localhost:8080/blog/) |
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| If you subsequently delete the .eba from the load directory the application |
| will be uninstalled. |
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| <a name="BlogSample-RunningthesampleusingaJPApersistencelayer"></a> |
| ### Running the sample using a JPA persistence layer |
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| The first blog sample application was written to use a JDBC persistence |
| layer. There is a second application implemented to demonstrate the JPA |
| capability |
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| To run the blog sample which uses the JPA persistence layer, start the OSGi |
| framework as before, remove any previous copies of the blog sample from the |
| target/load directory, then copy |
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| samples/blog/blog-jpa-eba/target/*.eba |
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| into the load directory. |
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| Finally, after typing 'refresh' at the OSGi console, point your browser at [http://localhost:8080/blog/](http://localhost:8080/blog/) |
| . You should see something that looks precisely the same as the blog sample |
| running with the JDBC persistence layer, but this time running using the |
| JPA persistence layer. |
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| <a name="BlogSample-AbouttheBlogsample"></a> |
| ## About the Blog sample |
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| The blog sample components can be visualised like this: |
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|  |
