// Compiler for parsing only, needed by netbeans
public Compiler(JspCompilationContext ctxt, JspServletWrapper jsw) {
this.jsw = jsw;
this.ctxt = ctxt;
this.jspcMode = false;
this.options = ctxt.getOptions();
this.log = Logger.getLogger(Compiler.class.getName());
this.smapUtil = new SmapUtil(ctxt);
this.errDispatcher = new ErrorDispatcher(jspcMode);
this.javaCompiler = new NullJavaCompiler();
javaCompiler.init(ctxt, errDispatcher, jspcMode);
}
public Compiler(JspCompilationContext ctxt, JspServletWrapper jsw, boolean jspcMode)
throws JasperException {
this.jsw = jsw;
this.ctxt = ctxt;
this.jspcMode = jspcMode;
this.options = ctxt.getOptions();
this.log = Logger.getLogger(Compiler.class.getName());
if (jspcMode) {
log.setLevel(Level.OFF);
}
this.smapUtil = new SmapUtil(ctxt);
this.errDispatcher = new ErrorDispatcher(jspcMode);
initJavaCompiler();
}
private ServletWriter setupContextWriter(String javaFileName)
throws FileNotFoundException, JasperException {
ServletWriter writer;
// Setup the ServletWriter
String javaEncoding = ctxt.getOptions().getJavaEncoding();
OutputStreamWriter osw = null;
try {
osw = new OutputStreamWriter(new FileOutputStream(javaFileName), javaEncoding);
} catch (UnsupportedEncodingException ex) {
errDispatcher.jspError("jsp.error.needAlternateJavaEncoding", javaEncoding);
}
writer = new ServletWriter(new PrintWriter(osw));
ctxt.setWriter(writer);
return writer;
}
/**
* Determine if a compilation is necessary by checking the time stamp of the JSP page with that of
* the corresponding .class or .java file. If the page has dependencies, the check is also
* extended to its dependeants, and so on. This method can by overidden by a subclasses of
* Compiler.
*
* @param checkClass If true, check against .class file, if false, check against .java file.
*/
public boolean isOutDated(boolean checkClass) {
String jsp = ctxt.getJspFile();
if (jsw != null && (ctxt.getOptions().getModificationTestInterval() > 0)) {
if (jsw.getLastModificationTest() + (ctxt.getOptions().getModificationTestInterval() * 1000)
> System.currentTimeMillis()) {
return false;
} else {
jsw.setLastModificationTest(System.currentTimeMillis());
}
}
long jspRealLastModified = 0;
// START PWC 6468930
File targetFile;
if (checkClass) {
targetFile = new File(ctxt.getClassFileName());
} else {
targetFile = new File(ctxt.getServletJavaFileName());
}
// Get the target file's last modified time. File.lastModified()
// returns 0 if the file does not exist.
long targetLastModified = targetFile.lastModified();
// Check cached class file
if (checkClass) {
JspRuntimeContext rtctxt = ctxt.getRuntimeContext();
String className = ctxt.getFullClassName();
long cachedTime = rtctxt.getBytecodeBirthTime(className);
if (cachedTime > targetLastModified) {
targetLastModified = cachedTime;
} else {
// Remove from cache, since the bytecodes from the file is more
// current, so that JasperLoader won't load the cached version
rtctxt.setBytecode(className, null);
}
}
if (targetLastModified == 0L) return true;
// Check if the jsp exists in the filesystem (instead of a jar
// or a remote location). If yes, then do a File.lastModified()
// to determine its last modified time. This is more performant
// (fewer stat calls) than the ctxt.getResource() followed by
// openConnection(). However, it only works for file system jsps.
// If the file has indeed changed, then need to call URL.OpenConnection()
// so that the cache loads the latest jsp file
if (jsw != null) {
File jspFile = jsw.getJspFile();
if (jspFile != null) {
jspRealLastModified = jspFile.lastModified();
}
}
if (jspRealLastModified == 0 || targetLastModified < jspRealLastModified) {
// END PWC 6468930
try {
URL jspUrl = ctxt.getResource(jsp);
if (jspUrl == null) {
ctxt.incrementRemoved();
return false;
}
URLConnection uc = jspUrl.openConnection();
jspRealLastModified = uc.getLastModified();
uc.getInputStream().close();
} catch (Exception e) {
e.printStackTrace();
return true;
}
// START PWC 6468930
}
// END PWC 6468930
/* PWC 6468930
long targetLastModified = 0;
File targetFile;
if( checkClass ) {
targetFile = new File(ctxt.getClassFileName());
} else {
targetFile = new File(ctxt.getServletJavaFileName());
}
if (!targetFile.exists()) {
return true;
}
targetLastModified = targetFile.lastModified();
*/
if (checkClass && jsw != null) {
jsw.setServletClassLastModifiedTime(targetLastModified);
}
if (targetLastModified < jspRealLastModified) {
// Remember JSP mod time
jspModTime = jspRealLastModified;
if (log.isLoggable(Level.FINE)) {
log.fine("Compiler: outdated: " + targetFile + " " + targetLastModified);
}
return true;
}
// determine if source dependent files (e.g. includes using include
// directives) have been changed.
if (jsw == null) {
return false;
}
List depends = jsw.getDependants();
if (depends == null) {
return false;
}
Iterator it = depends.iterator();
while (it.hasNext()) {
String include = (String) it.next();
try {
URL includeUrl = ctxt.getResource(include);
if (includeUrl == null) {
return true;
}
URLConnection includeUconn = includeUrl.openConnection();
long includeLastModified = includeUconn.getLastModified();
includeUconn.getInputStream().close();
if (includeLastModified > targetLastModified) {
// START GlassFish 750
if (include.endsWith(".tld")) {
ctxt.clearTaglibs();
ctxt.clearTagFileJarUrls();
}
// END GlassFish 750
return true;
}
} catch (Exception e) {
e.printStackTrace();
return true;
}
}
return false;
}
/** Compile the jsp file into equivalent servlet in java source */
private void generateJava() throws Exception {
long t1, t2, t3, t4;
t1 = t2 = t3 = t4 = 0;
if (log.isLoggable(Level.FINE)) {
t1 = System.currentTimeMillis();
}
// Setup page info area
pageInfo =
new PageInfo(new BeanRepository(ctxt.getClassLoader(), errDispatcher), ctxt.getJspFile());
JspConfig jspConfig = options.getJspConfig();
JspProperty jspProperty = jspConfig.findJspProperty(ctxt.getJspFile());
/*
* If the current uri is matched by a pattern specified in
* a jsp-property-group in web.xml, initialize pageInfo with
* those properties.
*/
pageInfo.setELIgnored(JspUtil.booleanValue(jspProperty.isELIgnored()));
pageInfo.setScriptingInvalid(JspUtil.booleanValue(jspProperty.isScriptingInvalid()));
pageInfo.setTrimDirectiveWhitespaces(JspUtil.booleanValue(jspProperty.getTrimSpaces()));
pageInfo.setDeferredSyntaxAllowedAsLiteral(JspUtil.booleanValue(jspProperty.getPoundAllowed()));
pageInfo.setErrorOnUndeclaredNamespace(
JspUtil.booleanValue(jspProperty.errorOnUndeclaredNamespace()));
if (jspProperty.getIncludePrelude() != null) {
pageInfo.setIncludePrelude(jspProperty.getIncludePrelude());
}
if (jspProperty.getIncludeCoda() != null) {
pageInfo.setIncludeCoda(jspProperty.getIncludeCoda());
}
if (options.isDefaultBufferNone() && pageInfo.getBufferValue() == null) {
// Set to unbuffered if not specified explicitly
pageInfo.setBuffer(0);
}
String javaFileName = ctxt.getServletJavaFileName();
ServletWriter writer = null;
try {
// Setup the ServletWriter
Writer javaWriter =
javaCompiler.getJavaWriter(javaFileName, ctxt.getOptions().getJavaEncoding());
writer = new ServletWriter(new PrintWriter(javaWriter));
ctxt.setWriter(writer);
// Reset the temporary variable counter for the generator.
JspUtil.resetTemporaryVariableName();
// Parse the file
ParserController parserCtl = new ParserController(ctxt, this);
pageNodes = parserCtl.parse(ctxt.getJspFile());
if (ctxt.isPrototypeMode()) {
// generate prototype .java file for the tag file
Generator.generate(writer, this, pageNodes);
writer.close();
writer = null;
return;
}
// Validate and process attributes
Validator.validate(this, pageNodes);
if (log.isLoggable(Level.FINE)) {
t2 = System.currentTimeMillis();
}
// Collect page info
Collector.collect(this, pageNodes);
// Compile (if necessary) and load the tag files referenced in
// this compilation unit.
tfp = new TagFileProcessor();
tfp.loadTagFiles(this, pageNodes);
if (log.isLoggable(Level.FINE)) {
t3 = System.currentTimeMillis();
}
// Determine which custom tag needs to declare which scripting vars
ScriptingVariabler.set(pageNodes, errDispatcher);
// Optimizations by Tag Plugins
TagPluginManager tagPluginManager = options.getTagPluginManager();
tagPluginManager.apply(pageNodes, errDispatcher, pageInfo);
// Optimization: concatenate contiguous template texts.
TextOptimizer.concatenate(this, pageNodes);
// Generate static function mapper codes.
ELFunctionMapper.map(this, pageNodes);
// generate servlet .java file
Generator.generate(writer, this, pageNodes);
writer.close();
writer = null;
// The writer is only used during the compile, dereference
// it in the JspCompilationContext when done to allow it
// to be GC'd and save memory.
ctxt.setWriter(null);
if (log.isLoggable(Level.FINE)) {
t4 = System.currentTimeMillis();
log.fine(
"Generated "
+ javaFileName
+ " total="
+ (t4 - t1)
+ " generate="
+ (t4 - t3)
+ " validate="
+ (t2 - t1));
}
} catch (Exception e) {
if (writer != null) {
try {
writer.close();
writer = null;
} catch (Exception e1) {
// do nothing
}
}
// Remove the generated .java file
javaCompiler.doJavaFile(false);
throw e;
} finally {
if (writer != null) {
try {
writer.close();
} catch (Exception e2) {
// do nothing
}
}
}
// JSR45 Support
if (!options.isSmapSuppressed()) {
smapUtil.generateSmap(pageNodes);
}
// If any proto type .java and .class files was generated,
// the prototype .java may have been replaced by the current
// compilation (if the tag file is self referencing), but the
// .class file need to be removed, to make sure that javac would
// generate .class again from the new .java file just generated.
tfp.removeProtoTypeFiles(ctxt.getClassFileName());
}
public void init(JspCompilationContext ctxt, JspServletWrapper jsw) {
this.jsw = jsw;
this.ctxt = ctxt;
this.options = ctxt.getOptions();
}
/**
* Determine if a compilation is necessary by checking the time stamp of the JSP page with that of
* the corresponding .class or .java file. If the page has dependencies, the check is also
* extended to its dependents, and so on. This method can by overridden by a subclasses of
* Compiler.
*
* @param checkClass If true, check against .class file, if false, check against .java file.
*/
public boolean isOutDated(boolean checkClass) {
String jsp = ctxt.getJspFile();
if (jsw != null && (ctxt.getOptions().getModificationTestInterval() > 0)) {
if (jsw.getLastModificationTest() + (ctxt.getOptions().getModificationTestInterval() * 1000)
> System.currentTimeMillis()) {
return false;
}
jsw.setLastModificationTest(System.currentTimeMillis());
}
long jspRealLastModified = 0;
try {
URL jspUrl = ctxt.getResource(jsp);
if (jspUrl == null) {
ctxt.incrementRemoved();
return true;
}
URLConnection uc = jspUrl.openConnection();
if (uc instanceof JarURLConnection) {
jspRealLastModified = ((JarURLConnection) uc).getJarEntry().getTime();
} else {
jspRealLastModified = uc.getLastModified();
}
uc.getInputStream().close();
} catch (Exception e) {
if (log.isDebugEnabled()) log.debug("Problem accessing resource. Treat as outdated.", e);
return true;
}
long targetLastModified = 0;
File targetFile;
if (checkClass) {
targetFile = new File(ctxt.getClassFileName());
} else {
targetFile = new File(ctxt.getServletJavaFileName());
}
if (!targetFile.exists()) {
return true;
}
targetLastModified = targetFile.lastModified();
if (checkClass && jsw != null) {
jsw.setServletClassLastModifiedTime(targetLastModified);
}
if (targetLastModified < jspRealLastModified) {
if (log.isDebugEnabled()) {
log.debug("Compiler: outdated: " + targetFile + " " + targetLastModified);
}
return true;
}
// determine if source dependent files (e.g. includes using include
// directives) have been changed.
if (jsw == null) {
return false;
}
List<String> depends = jsw.getDependants();
if (depends == null) {
return false;
}
Iterator<String> it = depends.iterator();
while (it.hasNext()) {
String include = it.next();
try {
URL includeUrl = ctxt.getResource(include);
if (includeUrl == null) {
return true;
}
URLConnection iuc = includeUrl.openConnection();
long includeLastModified = 0;
if (iuc instanceof JarURLConnection) {
includeLastModified = ((JarURLConnection) iuc).getJarEntry().getTime();
} else {
includeLastModified = iuc.getLastModified();
}
iuc.getInputStream().close();
if (includeLastModified > targetLastModified) {
return true;
}
} catch (Exception e) {
if (log.isDebugEnabled()) log.debug("Problem accessing resource. Treat as outdated.", e);
return true;
}
}
return false;
}