Instantiate org.apache.fop.apps.Driver. Once this class is
instantiated, methods are called to set the
Renderer to use
and the OutputStream to use to output the results of the
rendering (where applicable). In the case of the Renderer and
ElementMapping(s), the Driver may be supplied either with the
object itself, or the name of the class, in which case Driver will
instantiate the class itself. The advantage of the latter is it
enables runtime determination of Renderer and ElementMapping(s).
The simplest way to use Driver is to instantiate it with the
InputSource and OutputStream, then set the renderer desired and
call the run method.
Here is an example use of Driver which outputs PDF:
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Driver driver = new Driver(new InputSource (args[0]),
new FileOutputStream(args[1]));
driver.setRenderer(RENDER_PDF);
driver.run();
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To setup the user config file you can do the following
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userConfigFile = new File(userConfig);
options = new Options(userConfigFile);
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Once the Driver is set up, the render method
is called. Depending on whether DOM or SAX is being used, the
invocation of the method is either render(Document) or
render(Parser, InputSource) respectively.
A third possibility may be used to build the FO Tree, namely
calling getContentHandler() and firing the SAX events yourself.
Once the FO Tree is built, the format() and render() methods may be
called in that order.
Here is an example use of Driver:
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Driver driver = new Driver();
driver.setRenderer(Driver.RENDER_PDF);
driver.setInputSource(new FileInputSource(args[0]));
driver.setOutputStream(new FileOutputStream(args[1]));
driver.run();
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You can also specify an xml and xsl file for the input.
Here is an example use of Driver with the XSLTInputHandler:
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Driver driver = new Driver();
driver.setRenderer(Driver.RENDER_PDF);
InputHandler inputHandler = new XSLTInputHandler(xmlFile, xslFile);
XMLReader parser = inputHandler.getParser();
driver.setOutputStream(new FileOutputStream(outFile));
driver.render(parser, inputHandler.getInputSource());
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Have a look at the classes CommandLineStarter or FopServlet for complete examples.
