public static boolean compile(SchemaCompiler.Parameters params) 
{
        File baseDir = params.getBaseDir();
        File[] xsdFiles = params.getXsdFiles();
        File[] wsdlFiles = params.getWsdlFiles();
        URL[] urlFiles = params.getUrlFiles();
        File[] javaFiles = params.getJavaFiles();
        File[] configFiles = params.getConfigFiles();
        File[] classpath = params.getClasspath();
        File outputJar = params.getOutputJar();
        String name = params.getName();
        File srcDir = params.getSrcDir();
        File classesDir = params.getClassesDir();
        String compiler = params.getCompiler();
        String javasource = params.getJavaSource();
        String memoryInitialSize = params.getMemoryInitialSize();
        String memoryMaximumSize = params.getMemoryMaximumSize();
        boolean nojavac = params.isNojavac();
        boolean debug = params.isDebug();
        boolean verbose = params.isVerbose();
        boolean quiet = params.isQuiet();
        boolean download = params.isDownload();
        boolean noUpa = params.isNoUpa();
        boolean noPvr = params.isNoPvr();
        boolean noAnn = params.isNoAnn();
        boolean noVDoc = params.isNoVDoc();
        boolean noExt = params.isNoExt();
        boolean incrSrcGen = params.isIncrementalSrcGen();
        Collection outerErrorListener = params.getErrorListener();
        String repackage = params.getRepackage();
        if (repackage!=null)
        {
            SchemaTypeLoaderImpl.METADATA_PACKAGE_LOAD = SchemaTypeSystemImpl.METADATA_PACKAGE_GEN;
            String stsPackage = SchemaTypeSystem.class.getPackage().getName();
            Repackager repackager = new Repackager( repackage );
            SchemaTypeSystemImpl.METADATA_PACKAGE_GEN = repackager.repackage(new StringBuffer(stsPackage)).toString().replace('.",'_");
            System.out.println("\n\n\n" + stsPackage + ".SchemaCompiler  Metadata LOAD:" + SchemaTypeLoaderImpl.METADATA_PACKAGE_LOAD + " GEN:" + SchemaTypeSystemImpl.METADATA_PACKAGE_GEN);
        }
        SchemaCodePrinter codePrinter = params.getSchemaCodePrinter();
        List extensions = params.getExtensions();
        Set mdefNamespaces = params.getMdefNamespaces();
        EntityResolver cmdLineEntRes = params.getEntityResolver() == null ?
            ResolverUtil.resolverForCatalog(params.getCatalogFile()) : params.getEntityResolver();
        if (srcDir == null || classesDir == null)
            throw new IllegalArgumentException("src and class gen directories may not be null.");
        long start = System.currentTimeMillis();
        // Calculate the usenames based on the relativized filenames on the filesystem
        if (baseDir == null)
            baseDir = new File(SystemProperties.getProperty("user.dir"));
        ResourceLoader cpResourceLoader = null;
        Map sourcesToCopyMap = new HashMap();
        if (classpath != null)
            cpResourceLoader = new PathResourceLoader(classpath);
        boolean result = true;
        File schemasDir = IOUtil.createDir(classesDir, "schema" + SchemaTypeSystemImpl.METADATA_PACKAGE_GEN + "/src");
        // build the in-memory type system
        XmlErrorWatcher errorListener = new XmlErrorWatcher(outerErrorListener);
        SchemaTypeSystem system = loadTypeSystem(name, xsdFiles, wsdlFiles, urlFiles, configFiles,
            javaFiles, cpResourceLoader, download, noUpa, noPvr, noAnn, noVDoc, noExt, mdefNamespaces,
            baseDir, sourcesToCopyMap, errorListener, schemasDir, cmdLineEntRes, classpath, javasource);
        if (errorListener.hasError())
            result = false;
        long finish = System.currentTimeMillis();
        if (!quiet)
            System.out.println("Time to build schema type system: " + ((double)(finish - start) / 1000.0) + " seconds" );
        // now code generate and compile the JAR
        if (result && system != null) // todo: don't check "result" here if we want to compile anyway, ignoring invalid schemas
        {
            start = System.currentTimeMillis();
            // filer implementation writes binary .xsd and generated source to disk
            Repackager repackager = (repackage == null ? null : new Repackager(repackage));
            FilerImpl filer = new FilerImpl(classesDir, srcDir, repackager, verbose, incrSrcGen);
            // currently just for schemaCodePrinter
            XmlOptions options = new XmlOptions();
            if (codePrinter != null)
                options.setSchemaCodePrinter(codePrinter);
            if (javasource != null)
                options.setGenerateJavaVersion(javasource);
            // save .xsb files
            system.save(filer);
            // gen source files
            result &= SchemaTypeSystemCompiler.generateTypes(system, filer, options);
            if (incrSrcGen)
            {
                // We have to delete extra source files that may be out of date
                SchemaCodeGenerator.deleteObsoleteFiles(srcDir, srcDir,
                    new HashSet(filer.getSourceFiles()));
            }
            if (result)
            {
                finish = System.currentTimeMillis();
                if (!quiet)
                    System.out.println("Time to generate code: " + ((double)(finish - start) / 1000.0) + " seconds" );
            }
            // compile source
            if (result && !nojavac)
            {
                start = System.currentTimeMillis();
                List sourcefiles = filer.getSourceFiles();
                if (javaFiles != null)
                    sourcefiles.addAll(java.util.Arrays.asList(javaFiles));
                if (!CodeGenUtil.externalCompile(sourcefiles, classesDir, classpath, debug, compiler, javasource, memoryInitialSize, memoryMaximumSize, quiet, verbose))
                    result = false;
                finish = System.currentTimeMillis();
                if (result && !params.isQuiet())
                    System.out.println("Time to compile code: " + ((double)(finish - start) / 1000.0) + " seconds" );
                // jar classes and .xsb
                if (result && outputJar != null)
                {
                    try
                    {
                        new JarHelper().jarDir(classesDir, outputJar);
                    }
                    catch (IOException e)
                    {
                        System.err.println("IO Error " + e);
                        result = false;
                    }
                    if (result && !params.isQuiet())
                        System.out.println("Compiled types to: " + outputJar);
                }
            }
        }
        if (!result && !quiet)
        {
            System.out.println("BUILD FAILED");
        }
        else {
            // call schema compiler extension if registered
            runExtensions(extensions, system, classesDir);
        }
        if (cpResourceLoader != null)
            cpResourceLoader.close();
        return result;
}

 public static  void main(String[] args) 
{
        if (args.length == 0)
        {
            printUsage();
            System.exit(0);
            return;
        }
        Set flags = new HashSet();
        flags.add("h");
        flags.add("help");
        flags.add("usage");
        flags.add("license");
        flags.add("quiet");
        flags.add("verbose");
        flags.add("version");
        flags.add("dl");
        flags.add("noupa");
        flags.add("nopvr");
        flags.add("noann");
        flags.add("novdoc");
        flags.add("noext");
        flags.add("srconly");
        flags.add("debug");
        Set opts = new HashSet();
        opts.add("out");
        opts.add("name");
        opts.add("src");
        opts.add("d");
        opts.add("cp");
        opts.add("compiler");
        opts.add("javasource");
        opts.add("jar"); // deprecated
        opts.add("ms");
        opts.add("mx");
        opts.add("repackage");
        opts.add("schemaCodePrinter");
        opts.add("extension");
        opts.add("extensionParms");
        opts.add("allowmdef");
        opts.add("catalog");
        CommandLine cl = new CommandLine(args, flags, opts);
        if (cl.getOpt("h") != null || cl.getOpt("help") != null || cl.getOpt("usage") != null)
        {
            printUsage();
            System.exit(0);
            return;
        }
        String[] badopts = cl.getBadOpts();
        if (badopts.length  > 0)
        {
            for (int i = 0; i <  badopts.length; i++)
                System.out.println("Unrecognized option: " + badopts[i]);
            printUsage();
            System.exit(0);
            return;
        }
        if (cl.getOpt("license") != null)
        {
            CommandLine.printLicense();
            System.exit(0);
            return;
        }
        if (cl.getOpt("version") != null)
        {
            CommandLine.printVersion();
            System.exit(0);
            return;
        }
        args = cl.args();
        boolean verbose = (cl.getOpt("verbose") != null);
        boolean quiet = (cl.getOpt("quiet") != null);
        if (verbose)
            quiet = false;
        if (verbose)
            CommandLine.printVersion();
        String outputfilename = cl.getOpt("out");
        String repackage = cl.getOpt("repackage");
        String codePrinterClass = cl.getOpt("schemaCodePrinter");
        SchemaCodePrinter codePrinter = null;
        if (codePrinterClass != null)
        {
            try
            {
                codePrinter = (SchemaCodePrinter)
                    Class.forName(codePrinterClass).newInstance();
            }
            catch (Exception e)
            {
                System.err.println
                    ("Failed to load SchemaCodePrinter class " +
                     codePrinterClass + "; proceeding with default printer");
            }
        }
        String name = cl.getOpt("name");
        boolean download = (cl.getOpt("dl") != null);
        boolean noUpa = (cl.getOpt("noupa") != null);
        boolean noPvr = (cl.getOpt("nopvr") != null);
        boolean noAnn = (cl.getOpt("noann") != null);
        boolean noVDoc= (cl.getOpt("novdoc") != null);
        boolean noExt= (cl.getOpt("noext") != null);
        boolean nojavac = (cl.getOpt("srconly") != null);
        boolean debug = (cl.getOpt("debug") != null);
        String allowmdef = cl.getOpt("allowmdef");
        Set mdefNamespaces = (allowmdef == null ? Collections.EMPTY_SET :
                new HashSet(Arrays.asList(XmlListImpl.split_list(allowmdef))));
        List extensions = new ArrayList();
        if (cl.getOpt("extension") != null) {
            try {
                Extension e = new Extension();
                e.setClassName(Class.forName(cl.getOpt("extension"), false, Thread.currentThread().getContextClassLoader()));
                extensions.add(e);
            } catch (ClassNotFoundException e) {
                System.err.println("Could not find extension class: " + cl.getOpt("extension") + "  Is it on your classpath?");
                System.exit(1);
            }
        }
        if (extensions.size()  > 0)
        {
            // example: -extensionParms typeMappingFileLocation=d:\types
            if (cl.getOpt("extensionParms") != null) {
                Extension e = (Extension) extensions.get(0);
                // extensionParms are delimited by ';'
                StringTokenizer parmTokens = new StringTokenizer(cl.getOpt("extensionParms"), ";");
                while (parmTokens.hasMoreTokens()) {
                    // get name value pair for each extension parms and stick into extension parms
                    String nvPair = parmTokens.nextToken();
                    int index = nvPair.indexOf('=");
                    if (index <  0)
                    {
                        System.err.println("extensionParms should be name=value;name=value");
                        System.exit(1);
                    }
                    String n = nvPair.substring(0, index);
                    String v = nvPair.substring(index + 1);
                    Extension.Param param = e.createParam();
                    param.setName(n);
                    param.setValue(v);
                }
            }
        }
        String classesdir = cl.getOpt("d");
        File classes = null;
        if (classesdir != null)
            classes = new File(classesdir);
        String srcdir = cl.getOpt("src");
        File src = null;
        if (srcdir != null)
            src = new File(srcdir);
        if (nojavac && srcdir == null && classes != null)
            src = classes;
        // create temp directory
        File tempdir = null;
        if (src == null || classes == null)
        {
            try
            {
                tempdir = SchemaCodeGenerator.createTempDir();
            }
            catch (java.io.IOException e)
            {
                System.err.println("Error creating temp dir " + e);
                System.exit(1);
            }
        }
        File jarfile = null;
        if (outputfilename == null && classes == null && !nojavac)
            outputfilename = "xmltypes.jar";
        if (outputfilename != null)
            jarfile = new File(outputfilename);
        if (src == null)
            src = IOUtil.createDir(tempdir, "src");
        if (classes == null)
            classes = IOUtil.createDir(tempdir, "classes");
        File[] classpath = null;
        String cpString = cl.getOpt("cp");
        if (cpString != null)
        {
            String[] cpparts = cpString.split(File.pathSeparator);
            List cpList = new ArrayList();
            for (int i = 0; i <  cpparts.length; i++)
                cpList.add(new File(cpparts[i]));
            classpath = (File[])cpList.toArray(new File[cpList.size()]);
        }
        else
        {
            classpath = CodeGenUtil.systemClasspath();
        }
        String javasource = cl.getOpt("javasource");
        String compiler = cl.getOpt("compiler");
        String jar = cl.getOpt("jar");
        if (verbose && jar != null)
            System.out.println("The 'jar' option is no longer supported.");
        String memoryInitialSize = cl.getOpt("ms");
        String memoryMaximumSize = cl.getOpt("mx");
        File[] xsdFiles = cl.filesEndingWith(".xsd");
        File[] wsdlFiles = cl.filesEndingWith(".wsdl");
        File[] javaFiles = cl.filesEndingWith(".java");
        File[] configFiles = cl.filesEndingWith(".xsdconfig");
        URL[] urlFiles = cl.getURLs();
        if (xsdFiles.length + wsdlFiles.length + urlFiles.length == 0)
        {
            System.out.println("Could not find any xsd or wsdl files to process.");
            System.exit(0);
        }
        File baseDir = cl.getBaseDir();
        URI baseURI = baseDir == null ? null : baseDir.toURI();
        XmlErrorPrinter err = new XmlErrorPrinter(verbose, baseURI);
        String catString = cl.getOpt("catalog");
        Parameters params = new Parameters();
        params.setBaseDir(baseDir);
        params.setXsdFiles(xsdFiles);
        params.setWsdlFiles(wsdlFiles);
        params.setJavaFiles(javaFiles);
        params.setConfigFiles(configFiles);
        params.setUrlFiles(urlFiles);
        params.setClasspath(classpath);
        params.setOutputJar(jarfile);
        params.setName(name);
        params.setSrcDir(src);
        params.setClassesDir(classes);
        params.setCompiler(compiler);
        params.setJavaSource(javasource);
        params.setMemoryInitialSize(memoryInitialSize);
        params.setMemoryMaximumSize(memoryMaximumSize);
        params.setNojavac(nojavac);
        params.setQuiet(quiet);
        params.setVerbose(verbose);
        params.setDownload(download);
        params.setNoUpa(noUpa);
        params.setNoPvr(noPvr);
        params.setNoAnn(noAnn);
        params.setNoVDoc(noVDoc);
        params.setNoExt(noExt);
        params.setDebug(debug);
        params.setErrorListener(err);
        params.setRepackage(repackage);
        params.setExtensions(extensions);
        params.setMdefNamespaces(mdefNamespaces);
        params.setCatalogFile(catString);
        params.setSchemaCodePrinter(codePrinter);
        boolean result = compile(params);
        if (tempdir != null)
            SchemaCodeGenerator.tryHardToDelete(tempdir);
        if (!result)
            System.exit(1);
        System.exit(0);
}

 public static  void printUsage() 
{
        System.out.println("Compiles a schema into XML Bean classes and metadata.");
        System.out.println("Usage: scomp [opts] [dirs]* [schema.xsd]* [service.wsdl]* [config.xsdconfig]*");
        System.out.println("Options include:");
        System.out.println("    -cp [a;b;c] - classpath");
        System.out.println("    -d [dir] - target binary directory for .class and .xsb files");
        System.out.println("    -src [dir] - target directory for generated .java files");
        System.out.println("    -srconly - do not compile .java files or jar the output.");
        System.out.println("    -out [xmltypes.jar] - the name of the output jar");
        System.out.println("    -dl - permit network downloads for imports and includes (default is off)");
        System.out.println("    -noupa - do not enforce the unique particle attribution rule");
        System.out.println("    -nopvr - do not enforce the particle valid (restriction) rule");
        System.out.println("    -noann - ignore annotations");
        System.out.println("    -novdoc - do not validate contents of < documentation >");
        System.out.println("    -noext - ignore all extension (Pre/Post and Interface) found in .xsdconfig files");
        System.out.println("    -compiler - path to external java compiler");
        System.out.println("    -javasource [version] - generate java source compatible for a Java version (1.4 or 1.5)");
        System.out.println("    -ms - initial memory for external java compiler (default '" + CodeGenUtil.DEFAULT_MEM_START + "')");
        System.out.println("    -mx - maximum memory for external java compiler (default '" + CodeGenUtil.DEFAULT_MEM_MAX + "')");
        System.out.println("    -debug - compile with debug symbols");
        System.out.println("    -quiet - print fewer informational messages");
        System.out.println("    -verbose - print more informational messages");
        System.out.println("    -version - prints version information");
        System.out.println("    -license - prints license information");
        System.out.println("    -allowmdef \"[ns] [ns] [ns]\" - ignores multiple defs in given namespaces (use ##local for no-namespace)");
        System.out.println("    -catalog [file] -  catalog file for org.apache.xml.resolver.tools.CatalogResolver. (Note: needs resolver.jar from http://xml.apache.org/commons/components/resolver/index.html)");
        /* Undocumented feature - pass in one schema compiler extension and related parameters
        System.out.println("    -repackage - repackage specification");
        System.out.println("    -extension - registers a schema compiler extension");
        System.out.println("    -extensionParms - specify parameters for the compiler extension");
        System.out.println("    -schemaCodePrinter - specify SchemaCodePrinter class");
        */
        System.out.println();
}