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| |
| <document> |
| |
| <properties> |
| <title>Fulcrum Script Service</title> |
| <author email="siegfried.goeschl@it20one.at">Siegfried Goeschl</author> |
| </properties> |
| |
| <body> |
| |
| <section name="Script Compilation"> |
| <p> |
| Depending on the ScriptEngine of your choice you have |
| various options to compile a script |
| <ul> |
| <li>transforming the script into an AST (abstract syntax tree) on the fly</li> |
| <li>compiling the script into Java bytecode on the fly thereby creating a Java class dynamically</li> |
| <li>precompile the script to Java bytecode thereby creating a Java class file</li> |
| </ul> |
| </p> |
| </section> |
| |
| <section name="Script Management"> |
| <p> |
| The scripts are managesd by the Fulcrum ResourcManager Service. This |
| gives you the locator functionality, optional decryption and location |
| transparency |
| </p> |
| </section> |
| |
| <section name="Locator"> |
| |
| <p> |
| The locator gives you easy customization of scripts. Let's |
| say you would like to invoke the script 'foo.js' for a customer |
| 'BAR' using the following script layout |
| </p> |
| |
| <source> |
| <![CDATA[ |
| scripts |
| -- foo.js |
| -- BAR |
| -- foo.js |
| ]]> |
| </source> |
| |
| <p> |
| In the case of invoking 'foo.js' the script 'foo.js' would be executed. |
| In the case of invoking 'BAR/foo.js' the script 'BAR/foo.js' would be executed. |
| In the case of invoking 'FOO/foo.js' the locator is looking for 'FOO/foo.js'. Since |
| it isn't found it steps up a directory to execute 'foo.js'. The trick was taken from |
| the Fulcrum XSLT service which uses a simlilar fallback mechanism. |
| </p> |
| |
| </section> |
| |
| </body> |
| |
| </document> |
