6.1. JAVA programming

In Java, you must first compile the source files with X-definitions. The first parameter of the method is the Properties for compilation (this parameter can be null or an empty Properties object - then the compilation defaults are used). The result of the compilation is an XDPool object:

  File xdef1, xdef2; // files with X-definition source code
  Properties props = new Properties();
  props.setProperty(XDConstants.XDPROPERTY_WARNINGS, "true"); // set compiler to report both warnings and errors
  XDPool xpool = XDFactory.compileXD(props, xdef1, xdef2); // compile X-definitions and create XDPool object

From the XDPool object it is possible to create the XDDocument object, in which the X-definition name is entered, which contains the data model to be worked with:

  XDDocument xdoc = xpool.createXDDocument("d1"); //create XDDocument from the X-definition with the name "d1"

Before work, it is advisable to prepare a reporter in which information about the process will be recorded. Then it is possible to start the validation or construction mode of processing:

  ArrayReporter reporter = new ArrayReporter(); // create empty reporter
  xdoc.xparse(data, reporter); // run validate mode with data source (or you can run xcreate - construction mode)
)
  // errors in reporter?
  if (reporter.errors()) { 
    reporter.printReports(System.err); // print reported messages
  } else { // no error has been reported
    ...
  }