List of usage examples for org.apache.commons.lang SystemUtils JAVA_VERSION_INT
int JAVA_VERSION_INT
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Gets the Java version as an int.
Example return values:
120 for JDK 1.2 131 for JDK 1.3.1 The field will return zero if #JAVA_VERSION is null.
From source file:org.apache.cocoon.components.language.programming.java.EclipseJavaCompiler.java
public boolean compile() throws IOException { final String targetClassName = makeClassName(sourceFile); final ClassLoader classLoader = ClassUtils.getClassLoader(); String[] fileNames = new String[] { sourceFile }; String[] classNames = new String[] { targetClassName }; class CompilationUnit implements ICompilationUnit { String className;/*from w w w.j ava 2 s . c o m*/ String sourceFile; CompilationUnit(String sourceFile, String className) { this.className = className; this.sourceFile = sourceFile; } public char[] getFileName() { return className.toCharArray(); } public char[] getContents() { char[] result = null; FileReader fr = null; try { fr = new FileReader(sourceFile); Reader reader = new BufferedReader(fr); if (reader != null) { char[] chars = new char[8192]; StringBuffer buf = new StringBuffer(); int count; while ((count = reader.read(chars, 0, chars.length)) > 0) { buf.append(chars, 0, count); } result = new char[buf.length()]; buf.getChars(0, result.length, result, 0); } } catch (IOException e) { handleError(className, -1, -1, e.getMessage()); } return result; } public char[] getMainTypeName() { int dot = className.lastIndexOf('.'); if (dot > 0) { return className.substring(dot + 1).toCharArray(); } return className.toCharArray(); } public char[][] getPackageName() { StringTokenizer izer = new StringTokenizer(className, "."); char[][] result = new char[izer.countTokens() - 1][]; for (int i = 0; i < result.length; i++) { String tok = izer.nextToken(); result[i] = tok.toCharArray(); } return result; } } final INameEnvironment env = new INameEnvironment() { public NameEnvironmentAnswer findType(char[][] compoundTypeName) { StringBuffer result = new StringBuffer(); for (int i = 0; i < compoundTypeName.length; i++) { if (i > 0) { result.append("."); } result.append(compoundTypeName[i]); } return findType(result.toString()); } public NameEnvironmentAnswer findType(char[] typeName, char[][] packageName) { StringBuffer result = new StringBuffer(); for (int i = 0; i < packageName.length; i++) { if (i > 0) { result.append("."); } result.append(packageName[i]); } result.append("."); result.append(typeName); return findType(result.toString()); } private NameEnvironmentAnswer findType(String className) { try { if (className.equals(targetClassName)) { ICompilationUnit compilationUnit = new CompilationUnit(sourceFile, className); return new NameEnvironmentAnswer(compilationUnit); } String resourceName = className.replace('.', '/') + ".class"; InputStream is = classLoader.getResourceAsStream(resourceName); if (is != null) { byte[] classBytes; byte[] buf = new byte[8192]; ByteArrayOutputStream baos = new ByteArrayOutputStream(buf.length); int count; while ((count = is.read(buf, 0, buf.length)) > 0) { baos.write(buf, 0, count); } baos.flush(); classBytes = baos.toByteArray(); char[] fileName = className.toCharArray(); ClassFileReader classFileReader = new ClassFileReader(classBytes, fileName, true); return new NameEnvironmentAnswer(classFileReader); } } catch (IOException exc) { handleError(className, -1, -1, exc.getMessage()); } catch (org.eclipse.jdt.internal.compiler.classfmt.ClassFormatException exc) { handleError(className, -1, -1, exc.getMessage()); } return null; } private boolean isPackage(String result) { if (result.equals(targetClassName)) { return false; } String resourceName = result.replace('.', '/') + ".class"; InputStream is = classLoader.getResourceAsStream(resourceName); return is == null; } public boolean isPackage(char[][] parentPackageName, char[] packageName) { StringBuffer result = new StringBuffer(); if (parentPackageName != null) { for (int i = 0; i < parentPackageName.length; i++) { if (i > 0) { result.append("."); } result.append(parentPackageName[i]); } } String str = new String(packageName); if (Character.isUpperCase(str.charAt(0)) && !isPackage(result.toString())) { return false; } result.append("."); result.append(str); return isPackage(result.toString()); } public void cleanup() { // EMPTY } }; final IErrorHandlingPolicy policy = DefaultErrorHandlingPolicies.proceedWithAllProblems(); final Map settings = new HashMap(9); settings.put(CompilerOptions.OPTION_LineNumberAttribute, CompilerOptions.GENERATE); settings.put(CompilerOptions.OPTION_SourceFileAttribute, CompilerOptions.GENERATE); settings.put(CompilerOptions.OPTION_ReportDeprecation, CompilerOptions.IGNORE); settings.put(CompilerOptions.OPTION_ReportUnusedImport, CompilerOptions.IGNORE); if (sourceEncoding != null) { settings.put(CompilerOptions.OPTION_Encoding, sourceEncoding); } if (debug) { settings.put(CompilerOptions.OPTION_LocalVariableAttribute, CompilerOptions.GENERATE); } // Set the sourceCodeVersion switch (this.compilerComplianceLevel) { case 150: settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_5); settings.put(CompilerOptions.OPTION_Compliance, CompilerOptions.VERSION_1_5); break; case 140: settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_4); break; default: settings.put(CompilerOptions.OPTION_Source, CompilerOptions.VERSION_1_3); } // Set the target platform switch (SystemUtils.JAVA_VERSION_INT) { case 150: settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_5); break; case 140: settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_4); break; default: settings.put(CompilerOptions.OPTION_TargetPlatform, CompilerOptions.VERSION_1_3); } final IProblemFactory problemFactory = new DefaultProblemFactory(Locale.getDefault()); final ICompilerRequestor requestor = new ICompilerRequestor() { public void acceptResult(CompilationResult result) { try { if (result.hasErrors()) { IProblem[] errors = result.getErrors(); for (int i = 0; i < errors.length; i++) { IProblem error = errors[i]; String name = new String(errors[i].getOriginatingFileName()); handleError(name, error.getSourceLineNumber(), -1, error.getMessage()); } } else { ClassFile[] classFiles = result.getClassFiles(); for (int i = 0; i < classFiles.length; i++) { ClassFile classFile = classFiles[i]; char[][] compoundName = classFile.getCompoundName(); StringBuffer className = new StringBuffer(); for (int j = 0; j < compoundName.length; j++) { if (j > 0) { className.append("."); } className.append(compoundName[j]); } byte[] bytes = classFile.getBytes(); String outFile = destDir + "/" + className.toString().replace('.', '/') + ".class"; FileOutputStream fout = new FileOutputStream(outFile); BufferedOutputStream bos = new BufferedOutputStream(fout); bos.write(bytes); bos.close(); } } } catch (IOException exc) { exc.printStackTrace(); } } }; ICompilationUnit[] compilationUnits = new ICompilationUnit[classNames.length]; for (int i = 0; i < compilationUnits.length; i++) { String className = classNames[i]; compilationUnits[i] = new CompilationUnit(fileNames[i], className); } Compiler compiler = new Compiler(env, policy, settings, requestor, problemFactory); compiler.compile(compilationUnits); return errors.size() == 0; }
From source file:org.apache.cocoon.components.language.programming.java.JavaLanguage.java
/** * Set the configuration parameters. This method instantiates the * sitemap-specified <code>ClassLoaderManager</code> * * @param params The configuration parameters * @throws ParameterException If the class loader manager cannot be * instantiated or looked up. *///from www . jav a 2s . c o m public void parameterize(Parameters params) throws ParameterException { super.parameterize(params); this.classLoaderClass = params.getParameter("class-loader", null); if (this.classLoaderClass != null) { try { this.classLoaderManager = (ClassLoaderManager) ClassUtils.newInstance(this.classLoaderClass); } catch (Exception e) { throw new ParameterException("Unable to load class loader: " + this.classLoaderClass, e); } } else { try { getLogger().debug("Looking up " + ClassLoaderManager.ROLE); this.classLoaderManager = (ClassLoaderManager) manager.lookup(ClassLoaderManager.ROLE); } catch (ServiceException e) { throw new ParameterException("Lookup of ClassLoaderManager failed", e); } } // Get the compiler compliance level (source Code version) String sourceVer = params.getParameter("compiler-compliance-level", "auto"); if (sourceVer.equalsIgnoreCase("auto")) { this.compilerComplianceLevel = SystemUtils.JAVA_VERSION_INT; } else { try { compilerComplianceLevel = new Float(Float.parseFloat(sourceVer) * 100).intValue(); } catch (NumberFormatException e) { throw new ParameterException("XSP: compiler-compliance-level parameter value not valid!", e); } } }