/** Load all of the named resource. */
private void loadAllResources(Vector v, String name) {
boolean anyLoaded = false;
try {
URL[] urls;
ClassLoader cld = null;
// First try the "application's" class loader.
cld = SecuritySupport.getContextClassLoader();
if (cld == null) cld = this.getClass().getClassLoader();
if (cld != null) urls = SecuritySupport.getResources(cld, name);
else urls = SecuritySupport.getSystemResources(name);
if (urls != null) {
if (LogSupport.isLoggable()) LogSupport.log("MimetypesFileTypeMap: getResources");
for (int i = 0; i < urls.length; i++) {
URL url = urls[i];
InputStream clis = null;
if (LogSupport.isLoggable()) LogSupport.log("MimetypesFileTypeMap: URL " + url);
try {
clis = SecuritySupport.openStream(url);
if (clis != null) {
v.addElement(new MimeTypeFile(clis));
anyLoaded = true;
if (LogSupport.isLoggable())
LogSupport.log(
"MimetypesFileTypeMap: "
+ "successfully loaded "
+ "mime types from URL: "
+ url);
} else {
if (LogSupport.isLoggable())
LogSupport.log(
"MimetypesFileTypeMap: " + "not loading " + "mime types from URL: " + url);
}
} catch (IOException ioex) {
if (LogSupport.isLoggable())
LogSupport.log("MimetypesFileTypeMap: can't load " + url, ioex);
} catch (SecurityException sex) {
if (LogSupport.isLoggable())
LogSupport.log("MimetypesFileTypeMap: can't load " + url, sex);
} finally {
try {
if (clis != null) clis.close();
} catch (IOException cex) {
}
}
}
}
} catch (Exception ex) {
if (LogSupport.isLoggable()) LogSupport.log("MimetypesFileTypeMap: can't load " + name, ex);
}
// if failed to load anything, fall back to old technique, just in case
if (!anyLoaded) {
LogSupport.log("MimetypesFileTypeMap: !anyLoaded");
MimeTypeFile mf = loadResource("/" + name);
if (mf != null) v.addElement(mf);
}
}
/** Load from the named resource. */
private MimeTypeFile loadResource(String name) {
InputStream clis = null;
try {
clis = SecuritySupport.getResourceAsStream(this.getClass(), name);
if (clis != null) {
MimeTypeFile mf = new MimeTypeFile(clis);
if (LogSupport.isLoggable())
LogSupport.log("MimetypesFileTypeMap: successfully " + "loaded mime types file: " + name);
return mf;
} else {
if (LogSupport.isLoggable())
LogSupport.log("MimetypesFileTypeMap: not loading " + "mime types file: " + name);
}
} catch (IOException e) {
if (LogSupport.isLoggable()) LogSupport.log("MimetypesFileTypeMap: can't load " + name, e);
} catch (SecurityException sex) {
if (LogSupport.isLoggable()) LogSupport.log("MimetypesFileTypeMap: can't load " + name, sex);
} finally {
try {
if (clis != null) clis.close();
} catch (IOException ex) {
} // ignore it
}
return null;
}
private void debugDisplayClassLoader() {
try {
if( classLoader == SecuritySupport.getContextClassLoader() ) {
debugPrintln("using thread context class loader ("+classLoader+") for search");
return;
}
}
// The VM ran out of memory or there was some other serious problem. Re-throw.
catch (VirtualMachineError vme) {
throw vme;
}
// ThreadDeath should always be re-thrown
catch (ThreadDeath td) {
throw td;
}
catch (Throwable _) {
; // getContextClassLoader() undefined in JDK1.1
}
if( classLoader==ClassLoader.getSystemClassLoader() ) {
debugPrintln("using system class loader ("+classLoader+") for search");
return;
}
debugPrintln("using class loader ("+classLoader+") for search");
}
static {
// Use try/catch block to support applets
try {
debug = ss.getSystemProperty("jaxp.debug") != null;
} catch (Exception _) {
debug = false;
}
}
/**
* Read from system properties, or those in jaxp.properties
*
* @param property the property
* @param systemProperty the name of the system property
*/
private void getSystemProperty(Property property, String systemProperty) {
try {
String value = SecuritySupport.getSystemProperty(systemProperty);
if (value != null) {
values[property.ordinal()] = value;
states[property.ordinal()] = State.SYSTEMPROPERTY;
return;
}
value = SecuritySupport.readJAXPProperty(systemProperty);
if (value != null) {
values[property.ordinal()] = value;
states[property.ordinal()] = State.JAXPDOTPROPERTIES;
}
} catch (NumberFormatException e) {
// invalid setting ignored
}
}
static {
// Use try/catch block to support applets
try {
String val = SecuritySupport.getSystemProperty("jaxp.debug");
// Allow simply setting the prop to turn on debug
debug = val != null && (! "false".equals(val));
} catch (Exception _) {
debug = false;
}
}
/**
* <p>Search the specified classloader for the given classname.</p>
*
* @param classname the fully qualified name of the class to search for
* @param loader the classloader to search
*
* @return the source location of the resource, or null if it wasn't found
*/
private static String which(String classname, ClassLoader loader) {
String classnameAsResource = classname.replace('.', '/') + ".class";
if( loader==null ) loader = ClassLoader.getSystemClassLoader();
//URL it = loader.getResource(classnameAsResource);
URL it = ss.getResourceAsURL(loader, classnameAsResource);
if (it != null) {
return it.toString();
} else {
return null;
}
}
/** Figure out which ClassLoader to use. For JDK 1.2 and later use the context ClassLoader. */
static ClassLoader findClassLoader() throws ConfigurationError {
SecuritySupport ss = SecuritySupport.getInstance();
// Figure out which ClassLoader to use for loading the provider
// class. If there is a Context ClassLoader then use it.
ClassLoader context = ss.getContextClassLoader();
ClassLoader system = ss.getSystemClassLoader();
ClassLoader chain = system;
while (true) {
if (context == chain) {
// Assert: we are on JDK 1.1 or we have no Context ClassLoader
// or any Context ClassLoader in chain of system classloader
// (including extension ClassLoader) so extend to widest
// ClassLoader (always look in system ClassLoader if Xalan
// is in boot/extension/system classpath and in current
// ClassLoader otherwise); normal classloaders delegate
// back to system ClassLoader first so this widening doesn't
// change the fact that context ClassLoader will be consulted
ClassLoader current = ObjectFactory.class.getClassLoader();
chain = system;
while (true) {
if (current == chain) {
// Assert: Current ClassLoader in chain of
// boot/extension/system ClassLoaders
return system;
}
if (chain == null) {
break;
}
chain = ss.getParentClassLoader(chain);
}
// Assert: Current ClassLoader not in chain of
// boot/extension/system ClassLoaders
return current;
}
if (chain == null) {
// boot ClassLoader reached
break;
}
// Check for any extension ClassLoaders in chain up to
// boot ClassLoader
chain = ss.getParentClassLoader(chain);
}
;
// Assert: Context ClassLoader not in chain of
// boot/extension/system ClassLoaders
return context;
} // findClassLoader():ClassLoader
private void debugDisplayClassLoader() {
try {
if( classLoader == ss.getContextClassLoader() ) {
debugPrintln("using thread context class loader ("+classLoader+") for search");
return;
}
} catch( Throwable _ ) {
; // getContextClassLoader() undefined in JDK1.1
}
if( classLoader==ClassLoader.getSystemClassLoader() ) {
debugPrintln("using system class loader ("+classLoader+") for search");
return;
}
debugPrintln("using class loader ("+classLoader+") for search");
}
/**
* Returns an {@link Iterator} that enumerates all
* the META-INF/services files that we care.
*/
private Iterator createServiceFileIterator() {
if (classLoader == null) {
return new SingleIterator() {
protected Object value() {
ClassLoader classLoader = XPathFactoryFinder.class.getClassLoader();
return SecuritySupport.getResourceAsURL(classLoader, SERVICE_ID);
//return (ClassLoader.getSystemResource( SERVICE_ID ));
}
};
} else {
try {
//final Enumeration e = classLoader.getResources(SERVICE_ID);
final Enumeration e = SecuritySupport.getResources(classLoader, SERVICE_ID);
if (debug && !e.hasMoreElements()) {
debugPrintln("no "+SERVICE_ID+" file was found");
}
// wrap it into an Iterator.
return new Iterator() {
public void remove() {
throw new UnsupportedOperationException();
}
public boolean hasNext() {
return e.hasMoreElements();
}
public Object next() {
return e.nextElement();
}
};
} catch (IOException e) {
if (debug) {
debugPrintln("failed to enumerate resources "+SERVICE_ID);
e.printStackTrace();
}
return new ArrayList().iterator(); // empty iterator
}
}
}
/* 192: */
/* 193: */ static ClassLoader findClassLoader()
/* 194: */ throws ObjectFactory.ConfigurationError
/* 195: */ {
/* 196:396 */ SecuritySupport ss = SecuritySupport.getInstance();
/* 197: */
/* 198: */
/* 199: */
/* 200:400 */ ClassLoader context = ss.getContextClassLoader();
/* 201:401 */ ClassLoader system = ss.getSystemClassLoader();
/* 202: */
/* 203:403 */ ClassLoader chain = system;
/* 204: */ for (; ; )
/* 205: */ {
/* 206:405 */ if (context == chain)
/* 207: */ {
/* 208:414 */ ClassLoader current = ObjectFactory.class.getClassLoader();
/* 209: */
/* 210:416 */ chain = system;
/* 211: */ for (; ; )
/* 212: */ {
/* 213:418 */ if (current == chain) {
/* 214:421 */ return system;
/* 215: */ }
/* 216:423 */ if (chain == null) {
/* 217: */ break;
/* 218: */ }
/* 219:426 */ chain = ss.getParentClassLoader(chain);
/* 220: */ }
/* 221:431 */ return current;
/* 222: */ }
/* 223:434 */ if (chain == null) {
/* 224: */ break;
/* 225: */ }
/* 226:441 */ chain = ss.getParentClassLoader(chain);
/* 227: */ }
/* 228:446 */ return context;
/* 229: */ }
/**
* <p>Lookup a {@link XPathFactory} for the given object model.</p>
*
* @param uri identifies the object model.
*
* @return {@link XPathFactory} for the given object model.
*/
private XPathFactory _newFactory(String uri) {
XPathFactory xpathFactory;
String propertyName = SERVICE_CLASS.getName() + ":" + uri;
// system property look up
try {
debugPrintln("Looking up system property '"+propertyName+"'" );
String r = ss.getSystemProperty(propertyName);
if(r!=null) {
debugPrintln("The value is '"+r+"'");
xpathFactory = createInstance(r, true);
if(xpathFactory != null) return xpathFactory;
} else
debugPrintln("The property is undefined.");
} catch( Throwable t ) {
if( debug ) {
debugPrintln("failed to look up system property '"+propertyName+"'" );
t.printStackTrace();
}
}
String javah = ss.getSystemProperty( "java.home" );
String configFile = javah + File.separator +
"lib" + File.separator + "jaxp.properties";
String factoryClassName = null ;
// try to read from $java.home/lib/jaxp.properties
try {
if(firstTime){
synchronized(cacheProps){
if(firstTime){
File f=new File( configFile );
firstTime = false;
if(ss.doesFileExist(f)){
debugPrintln("Read properties file " + f);
cacheProps.load(ss.getFileInputStream(f));
}
}
}
}
factoryClassName = cacheProps.getProperty(propertyName);
debugPrintln("found " + factoryClassName + " in $java.home/jaxp.properties");
if (factoryClassName != null) {
xpathFactory = createInstance(factoryClassName, true);
if(xpathFactory != null){
return xpathFactory;
}
}
} catch (Exception ex) {
if (debug) {
ex.printStackTrace();
}
}
// try META-INF/services files
Iterator sitr = createServiceFileIterator();
while(sitr.hasNext()) {
URL resource = (URL)sitr.next();
debugPrintln("looking into " + resource);
try {
xpathFactory = loadFromService(uri, resource.toExternalForm(),
ss.getURLInputStream(resource));
if (xpathFactory != null) {
return xpathFactory;
}
} catch(IOException e) {
if( debug ) {
debugPrintln("failed to read "+resource);
e.printStackTrace();
}
}
}
// platform default
if(uri.equals(XPathFactory.DEFAULT_OBJECT_MODEL_URI)) {
debugPrintln("attempting to use the platform default W3C DOM XPath lib");
return createInstance("com.sun.org.apache.xpath.internal.jaxp.XPathFactoryImpl", true);
}
debugPrintln("all things were tried, but none was found. bailing out.");
return null;
}
// Used for debugging purposes
private static String which(Class<?> clazz) {
return ss.getClassSource(clazz);
}
/* 79: */
/* 80: */ static String lookUpFactoryClassName(
String factoryId, String propertiesFilename, String fallbackClassName)
/* 81: */ {
/* 82:261 */ SecuritySupport ss = SecuritySupport.getInstance();
/* 83: */ try
/* 84: */ {
/* 85:265 */ String systemProp = ss.getSystemProperty(factoryId);
/* 86:266 */ if (systemProp != null)
/* 87: */ {
/* 88:267 */ debugPrintln("found system property, value=" + systemProp);
/* 89:268 */ return systemProp;
/* 90: */ }
/* 91: */ }
/* 92: */ catch (SecurityException se) {
}
/* 93:276 */ String factoryClassName = null;
/* 94:279 */ if (propertiesFilename == null)
/* 95: */ {
/* 96:280 */ File propertiesFile = null;
/* 97:281 */ boolean propertiesFileExists = false;
/* 98: */ try
/* 99: */ {
/* 100:283 */ String javah = ss.getSystemProperty("java.home");
/* 101:284 */ propertiesFilename =
javah + File.separator + "lib" + File.separator + "xalan.properties";
/* 102: */
/* 103:286 */ propertiesFile = new File(propertiesFilename);
/* 104:287 */ propertiesFileExists = ss.getFileExists(propertiesFile);
/* 105: */ }
/* 106: */ catch (SecurityException javah)
/* 107: */ {
/* 108:290 */ fLastModified = -1L;
/* 109:291 */ fXalanProperties = null;
/* 110: */ }
/* 111:294 */ synchronized (ObjectFactory.class)
/* 112: */ {
/* 113:295 */ boolean loadProperties = false;
/* 114:296 */ FileInputStream fis = null;
/* 115: */ try
/* 116: */ {
/* 117:299 */ if (fLastModified >= 0L)
/* 118: */ {
/* 119:300 */ if ((propertiesFileExists)
&& (fLastModified
< (ObjectFactory.fLastModified = ss.getLastModified(propertiesFile))))
/* 120: */ {
/* 121:302 */ loadProperties = true;
/* 122: */ }
/* 123:305 */ else if (!propertiesFileExists)
/* 124: */ {
/* 125:306 */ fLastModified = -1L;
/* 126:307 */ fXalanProperties = null;
/* 127: */ }
/* 128: */ }
/* 129:312 */ else if (propertiesFileExists)
/* 130: */ {
/* 131:313 */ loadProperties = true;
/* 132:314 */ fLastModified = ss.getLastModified(propertiesFile);
/* 133: */ }
/* 134:317 */ if (loadProperties)
/* 135: */ {
/* 136:320 */ fXalanProperties = new Properties();
/* 137:321 */ fis = ss.getFileInputStream(propertiesFile);
/* 138:322 */ fXalanProperties.load(fis);
/* 139: */ }
/* 140: */ }
/* 141: */ catch (Exception x)
/* 142: */ {
/* 143:325 */ fXalanProperties = null;
/* 144:326 */ fLastModified = -1L;
/* 145: */ }
/* 146: */ finally
/* 147: */ {
/* 148:333 */ if (fis != null) {
/* 149: */ try
/* 150: */ {
/* 151:335 */ fis.close();
/* 152: */ }
/* 153: */ catch (IOException exc) {
}
/* 154: */ }
/* 155: */ }
/* 156: */ }
/* 157:342 */ if (fXalanProperties != null) {
/* 158:343 */ factoryClassName = fXalanProperties.getProperty(factoryId);
/* 159: */ }
/* 160: */ }
/* 161: */ else
/* 162: */ {
/* 163:346 */ FileInputStream fis = null;
/* 164: */ try
/* 165: */ {
/* 166:348 */ fis = ss.getFileInputStream(new File(propertiesFilename));
/* 167:349 */ Properties props = new Properties();
/* 168:350 */ props.load(fis);
/* 169:351 */ factoryClassName = props.getProperty(factoryId);
/* 170: */ }
/* 171: */ catch (Exception x) {
} finally
/* 172: */ {
/* 173:359 */ if (fis != null) {
/* 174: */ try
/* 175: */ {
/* 176:361 */ fis.close();
/* 177: */ }
/* 178: */ catch (IOException exc) {
}
/* 179: */ }
/* 180: */ }
/* 181: */ }
/* 182:368 */ if (factoryClassName != null)
/* 183: */ {
/* 184:369 */ debugPrintln("found in " + propertiesFilename + ", value=" + factoryClassName);
/* 185: */
/* 186:371 */ return factoryClassName;
/* 187: */ }
/* 188:375 */ return findJarServiceProviderName(factoryId);
/* 189: */ }
/* 307: */
/* 308: */ private static String findJarServiceProviderName(String factoryId) /* 309: */ {
/* 310:537 */ SecuritySupport ss = SecuritySupport.getInstance();
/* 311:538 */ String serviceId = "META-INF/services/" + factoryId;
/* 312:539 */ InputStream is = null;
/* 313: */
/* 314: */
/* 315:542 */ ClassLoader cl = findClassLoader();
/* 316: */
/* 317:544 */ is = ss.getResourceAsStream(cl, serviceId);
/* 318:547 */ if (is == null)
/* 319: */ {
/* 320:548 */ ClassLoader current = ObjectFactory.class.getClassLoader();
/* 321:549 */ if (cl != current)
/* 322: */ {
/* 323:550 */ cl = current;
/* 324:551 */ is = ss.getResourceAsStream(cl, serviceId);
/* 325: */ }
/* 326: */ }
/* 327:555 */ if (is == null) {
/* 328:557 */ return null;
/* 329: */ }
/* 330:560 */ debugPrintln("found jar resource=" + serviceId + " using ClassLoader: " + cl);
/* 331: */ BufferedReader rd;
/* 332: */ try
/* 333: */ {
/* 334:581 */ rd = new BufferedReader(new InputStreamReader(is, "UTF-8"));
/* 335: */ }
/* 336: */ catch (UnsupportedEncodingException e)
/* 337: */ {
/* 338:583 */ rd = new BufferedReader(new InputStreamReader(is));
/* 339: */ }
/* 340:586 */ String factoryClassName = null;
/* 341: */ try
/* 342: */ {
/* 343:590 */ factoryClassName = rd.readLine();
/* 344: */ }
/* 345: */ catch (IOException x)
/* 346: */ {
/* 347:593 */ return null;
/* 348: */ }
/* 349: */ finally
/* 350: */ {
/* 351: */ try
/* 352: */ {
/* 353:598 */ rd.close();
/* 354: */ }
/* 355: */ catch (IOException exc) {
}
/* 356: */ }
/* 357:604 */ if ((factoryClassName != null) && (!"".equals(factoryClassName)))
/* 358: */ {
/* 359:606 */ debugPrintln("found in resource, value=" + factoryClassName);
/* 360: */
/* 361: */
/* 362: */
/* 363: */
/* 364: */
/* 365: */
/* 366:613 */ return factoryClassName;
/* 367: */ }
/* 368:617 */ return null;
/* 369: */ }
/**
* <p>Lookup a {@link XPathFactory} for the given object model.</p>
*
* @param uri identifies the object model.
*
* @return {@link XPathFactory} for the given object model.
*/
private XPathFactory _newFactory(String uri) {
XPathFactory xpf;
String propertyName = SERVICE_CLASS.getName() + ":" + uri;
// system property look up
try {
if (debug) debugPrintln("Looking up system property '"+propertyName+"'" );
String r = SecuritySupport.getSystemProperty(propertyName);
if (r != null && r.length() > 0) {
if (debug) debugPrintln("The value is '"+r+"'");
xpf = createInstance(r);
if(xpf!=null) return xpf;
}
else if (debug) {
debugPrintln("The property is undefined.");
}
}
// The VM ran out of memory or there was some other serious problem. Re-throw.
catch (VirtualMachineError vme) {
throw vme;
}
// ThreadDeath should always be re-thrown
catch (ThreadDeath td) {
throw td;
}
catch (Throwable t) {
if( debug ) {
debugPrintln("failed to look up system property '"+propertyName+"'" );
t.printStackTrace();
}
}
String javah = SecuritySupport.getSystemProperty( "java.home" );
String configFile = javah + File.separator +
"lib" + File.separator + "jaxp.properties";
String factoryClassName = null ;
// try to read from $java.home/lib/jaxp.properties
try {
if(firstTime){
synchronized(cacheProps){
if(firstTime){
File f=new File( configFile );
firstTime = false;
if(SecuritySupport.doesFileExist(f)){
if (debug) debugPrintln("Read properties file " + f);
cacheProps.load(SecuritySupport.getFileInputStream(f));
}
}
}
}
factoryClassName = cacheProps.getProperty(propertyName);
if (debug) debugPrintln("found " + factoryClassName + " in $java.home/jaxp.properties");
if (factoryClassName != null) {
xpf = createInstance(factoryClassName);
if(xpf != null){
return xpf;
}
}
} catch (Exception ex) {
if (debug) {
ex.printStackTrace();
}
}
// try META-INF/services files
Iterator sitr = createServiceFileIterator();
while(sitr.hasNext()) {
URL resource = (URL)sitr.next();
if (debug) debugPrintln("looking into " + resource);
try {
xpf = loadFromServicesFile(uri, resource.toExternalForm(), SecuritySupport.getURLInputStream(resource));
if(xpf!=null) return xpf;
} catch(IOException e) {
if( debug ) {
debugPrintln("failed to read "+resource);
e.printStackTrace();
}
}
}
// platform default
if(uri.equals(XPathFactory.DEFAULT_OBJECT_MODEL_URI)) {
if (debug) debugPrintln("attempting to use the platform default W3C DOM XPath lib");
return createInstance("org.apache.xpath.jaxp.XPathFactoryImpl");
}
if (debug) debugPrintln("all things were tried, but none was found. bailing out.");
return null;
}
/**
* Finds the name of the required implementation class in the specified order. The specified order
* is the following:
*
* <ol>
* <li>query the system property using <code>System.getProperty</code>
* <li>read <code>$java.home/lib/<i>propertiesFilename</i></code> file
* <li>read <code>META-INF/services/<i>factoryId</i></code> file
* <li>use fallback classname
* </ol>
*
* @return name of class that provides factory service, never null
* @param factoryId Name of the factory to find, same as a property name
* @param propertiesFilename The filename in the $java.home/lib directory of the properties file.
* If none specified, ${java.home}/lib/xalan.properties will be used.
* @param fallbackClassName Implementation class name, if nothing else is found. Use null to mean
* no fallback.
* @exception ObjectFactory.ConfigurationError
*/
static String lookUpFactoryClassName(
String factoryId, String propertiesFilename, String fallbackClassName) {
SecuritySupport ss = SecuritySupport.getInstance();
// Use the system property first
try {
String systemProp = ss.getSystemProperty(factoryId);
if (systemProp != null) {
if (DEBUG) debugPrintln("found system property, value=" + systemProp);
return systemProp;
}
} catch (SecurityException se) {
// Ignore and continue w/ next location
}
// Try to read from propertiesFilename, or
// $java.home/lib/xalan.properties
String factoryClassName = null;
// no properties file name specified; use
// $JAVA_HOME/lib/xalan.properties:
if (propertiesFilename == null) {
File propertiesFile = null;
boolean propertiesFileExists = false;
try {
String javah = ss.getSystemProperty("java.home");
propertiesFilename =
javah + File.separator + "lib" + File.separator + DEFAULT_PROPERTIES_FILENAME;
propertiesFile = new File(propertiesFilename);
propertiesFileExists = ss.getFileExists(propertiesFile);
} catch (SecurityException e) {
// try again...
fLastModified = -1;
fXalanProperties = null;
}
synchronized (ObjectFactory.class) {
boolean loadProperties = false;
FileInputStream fis = null;
try {
// file existed last time
if (fLastModified >= 0) {
if (propertiesFileExists
&& (fLastModified < (fLastModified = ss.getLastModified(propertiesFile)))) {
loadProperties = true;
} else {
// file has stopped existing...
if (!propertiesFileExists) {
fLastModified = -1;
fXalanProperties = null;
} // else, file wasn't modified!
}
} else {
// file has started to exist:
if (propertiesFileExists) {
loadProperties = true;
fLastModified = ss.getLastModified(propertiesFile);
} // else, nothing's changed
}
if (loadProperties) {
// must never have attempted to read xalan.properties
// before (or it's outdeated)
fXalanProperties = new Properties();
fis = ss.getFileInputStream(propertiesFile);
fXalanProperties.load(fis);
}
} catch (Exception x) {
fXalanProperties = null;
fLastModified = -1;
// assert(x instanceof FileNotFoundException
// || x instanceof SecurityException)
// In both cases, ignore and continue w/ next location
} finally {
// try to close the input stream if one was opened.
if (fis != null) {
try {
fis.close();
}
// Ignore the exception.
catch (IOException exc) {
}
}
}
}
if (fXalanProperties != null) {
factoryClassName = fXalanProperties.getProperty(factoryId);
}
} else {
FileInputStream fis = null;
try {
fis = ss.getFileInputStream(new File(propertiesFilename));
Properties props = new Properties();
props.load(fis);
factoryClassName = props.getProperty(factoryId);
} catch (Exception x) {
// assert(x instanceof FileNotFoundException
// || x instanceof SecurityException)
// In both cases, ignore and continue w/ next location
} finally {
// try to close the input stream if one was opened.
if (fis != null) {
try {
fis.close();
}
// Ignore the exception.
catch (IOException exc) {
}
}
}
}
if (factoryClassName != null) {
if (DEBUG) debugPrintln("found in " + propertiesFilename + ", value=" + factoryClassName);
return factoryClassName;
}
// Try Jar Service Provider Mechanism
return findJarServiceProviderName(factoryId);
} // lookUpFactoryClass(String,String):String
/**
* Finds the implementation Class object in the specified order. The specified order is the
* following:
*
* <ol>
* <li>query the system property using <code>System.getProperty</code>
* <li>read <code>$java.home/lib/<i>propertiesFilename</i></code> file
* <li>read <code>META-INF/services/<i>factoryId</i></code> file
* <li>use fallback classname
* </ol>
*
* @return Class object of factory, never null
* @param factoryId Name of the factory to find, same as a property name
* @param propertiesFilename The filename in the $java.home/lib directory of the properties file.
* If none specified, ${java.home}/lib/xerces.properties will be used.
* @param fallbackClassName Implementation class name, if nothing else is found. Use null to mean
* no fallback.
* @exception ObjectFactory.ConfigurationError
*/
static Object createObject(String factoryId, String propertiesFilename, String fallbackClassName)
throws ConfigurationError {
if (DEBUG) debugPrintln("debug is on");
ClassLoader cl = findClassLoader();
// Use the system property first
try {
String systemProp = SecuritySupport.getInstance().getSystemProperty(factoryId);
if (systemProp != null && systemProp.length() > 0) {
if (DEBUG) debugPrintln("found system property, value=" + systemProp);
return newInstance(systemProp, cl, true);
}
} catch (SecurityException se) {
// Ignore and continue w/ next location
}
// Try to read from propertiesFilename, or $java.home/lib/xerces.properties
String factoryClassName = null;
// no properties file name specified; use $JAVA_HOME/lib/xerces.properties:
if (propertiesFilename == null) {
File propertiesFile = null;
boolean propertiesFileExists = false;
try {
String javah = SecuritySupport.getInstance().getSystemProperty("java.home");
propertiesFilename =
javah + File.separator + "lib" + File.separator + DEFAULT_PROPERTIES_FILENAME;
propertiesFile = new File(propertiesFilename);
propertiesFileExists = SecuritySupport.getInstance().getFileExists(propertiesFile);
} catch (SecurityException e) {
// try again...
fLastModified = -1;
fXercesProperties = null;
}
synchronized (ObjectFactory.class) {
boolean loadProperties = false;
FileInputStream fis = null;
try {
// file existed last time
if (fLastModified >= 0) {
if (propertiesFileExists
&& (fLastModified
< (fLastModified =
SecuritySupport.getInstance().getLastModified(propertiesFile)))) {
loadProperties = true;
} else {
// file has stopped existing...
if (!propertiesFileExists) {
fLastModified = -1;
fXercesProperties = null;
} // else, file wasn't modified!
}
} else {
// file has started to exist:
if (propertiesFileExists) {
loadProperties = true;
fLastModified = SecuritySupport.getInstance().getLastModified(propertiesFile);
} // else, nothing's changed
}
if (loadProperties) {
// must never have attempted to read xerces.properties before (or it's outdeated)
fXercesProperties = new Properties();
fis = SecuritySupport.getInstance().getFileInputStream(propertiesFile);
fXercesProperties.load(fis);
}
} catch (Exception x) {
fXercesProperties = null;
fLastModified = -1;
// assert(x instanceof FileNotFoundException
// || x instanceof SecurityException)
// In both cases, ignore and continue w/ next location
} finally {
// try to close the input stream if one was opened.
if (fis != null) {
try {
fis.close();
}
// Ignore the exception.
catch (IOException exc) {
}
}
}
}
if (fXercesProperties != null) {
factoryClassName = fXercesProperties.getProperty(factoryId);
}
} else {
FileInputStream fis = null;
try {
fis = SecuritySupport.getInstance().getFileInputStream(new File(propertiesFilename));
Properties props = new Properties();
props.load(fis);
factoryClassName = props.getProperty(factoryId);
} catch (Exception x) {
// assert(x instanceof FileNotFoundException
// || x instanceof SecurityException)
// In both cases, ignore and continue w/ next location
} finally {
// try to close the input stream if one was opened.
if (fis != null) {
try {
fis.close();
}
// Ignore the exception.
catch (IOException exc) {
}
}
}
}
if (factoryClassName != null) {
if (DEBUG) debugPrintln("found in " + propertiesFilename + ", value=" + factoryClassName);
return newInstance(factoryClassName, cl, true);
}
// Try Jar Service Provider Mechanism
Object provider = findJarServiceProvider(factoryId);
if (provider != null) {
return provider;
}
if (fallbackClassName == null) {
throw new ConfigurationError("Provider for " + factoryId + " cannot be found", null);
}
if (DEBUG) debugPrintln("using fallback, value=" + fallbackClassName);
return newInstance(fallbackClassName, cl, true);
} // createObject(String,String,String):Object
/**
* Find the name of service provider using Jar Service Provider Mechanism
*
* @return instance of provider class if found or null
*/
private static String findJarServiceProviderName(String factoryId) {
SecuritySupport ss = SecuritySupport.getInstance();
String serviceId = SERVICES_PATH + factoryId;
InputStream is = null;
// First try the Context ClassLoader
ClassLoader cl = findClassLoader();
is = ss.getResourceAsStream(cl, serviceId);
// If no provider found then try the current ClassLoader
if (is == null) {
ClassLoader current = ObjectFactory.class.getClassLoader();
if (cl != current) {
cl = current;
is = ss.getResourceAsStream(cl, serviceId);
}
}
if (is == null) {
// No provider found
return null;
}
if (DEBUG) debugPrintln("found jar resource=" + serviceId + " using ClassLoader: " + cl);
// Read the service provider name in UTF-8 as specified in
// the jar spec. Unfortunately this fails in Microsoft
// VJ++, which does not implement the UTF-8
// encoding. Theoretically, we should simply let it fail in
// that case, since the JVM is obviously broken if it
// doesn't support such a basic standard. But since there
// are still some users attempting to use VJ++ for
// development, we have dropped in a fallback which makes a
// second attempt using the platform's default encoding. In
// VJ++ this is apparently ASCII, which is a subset of
// UTF-8... and since the strings we'll be reading here are
// also primarily limited to the 7-bit ASCII range (at
// least, in English versions), this should work well
// enough to keep us on the air until we're ready to
// officially decommit from VJ++. [Edited comment from
// jkesselm]
BufferedReader rd;
try {
rd = new BufferedReader(new InputStreamReader(is, "UTF-8"));
} catch (java.io.UnsupportedEncodingException e) {
rd = new BufferedReader(new InputStreamReader(is));
}
String factoryClassName = null;
try {
// XXX Does not handle all possible input as specified by the
// Jar Service Provider specification
factoryClassName = rd.readLine();
} catch (IOException x) {
// No provider found
return null;
} finally {
try {
// try to close the reader.
rd.close();
}
// Ignore the exception.
catch (IOException exc) {
}
}
if (factoryClassName != null && !"".equals(factoryClassName)) {
if (DEBUG) debugPrintln("found in resource, value=" + factoryClassName);
// Note: here we do not want to fall back to the current
// ClassLoader because we want to avoid the case where the
// resource file was found using one ClassLoader and the
// provider class was instantiated using a different one.
return factoryClassName;
}
// No provider found
return null;
}
/**
* Lookup a {@link XPathFactory} for the given object model.
*
* @param uri identifies the object model.
* @return {@link XPathFactory} for the given object model.
*/
private XPathFactory _newFactory(String uri) throws XPathFactoryConfigurationException {
XPathFactory xpathFactory = null;
String propertyName = SERVICE_CLASS.getName() + ":" + uri;
// system property look up
try {
debugPrintln("Looking up system property '" + propertyName + "'");
String r = ss.getSystemProperty(propertyName);
if (r != null) {
debugPrintln("The value is '" + r + "'");
xpathFactory = createInstance(r, true);
if (xpathFactory != null) {
return xpathFactory;
}
} else debugPrintln("The property is undefined.");
} catch (Throwable t) {
if (debug) {
debugPrintln("failed to look up system property '" + propertyName + "'");
t.printStackTrace();
}
}
String javah = ss.getSystemProperty("java.home");
String configFile = javah + File.separator + "lib" + File.separator + "jaxp.properties";
// try to read from $java.home/lib/jaxp.properties
try {
if (firstTime) {
synchronized (cacheProps) {
if (firstTime) {
File f = new File(configFile);
firstTime = false;
if (ss.doesFileExist(f)) {
debugPrintln("Read properties file " + f);
cacheProps.load(ss.getFileInputStream(f));
}
}
}
}
final String factoryClassName = cacheProps.getProperty(propertyName);
debugPrintln("found " + factoryClassName + " in $java.home/jaxp.properties");
if (factoryClassName != null) {
xpathFactory = createInstance(factoryClassName, true);
if (xpathFactory != null) {
return xpathFactory;
}
}
} catch (Exception ex) {
if (debug) {
ex.printStackTrace();
}
}
// Try with ServiceLoader
assert xpathFactory == null;
xpathFactory = findServiceProvider(uri);
// The following assertion should always be true.
// Uncomment it, recompile, and run with -ea in case of doubts:
// assert xpathFactory == null || xpathFactory.isObjectModelSupported(uri);
if (xpathFactory != null) {
return xpathFactory;
}
// platform default
if (uri.equals(XPathFactory.DEFAULT_OBJECT_MODEL_URI)) {
debugPrintln("attempting to use the platform default W3C DOM XPath lib");
return createInstance("com.sun.org.apache.xpath.internal.jaxp.XPathFactoryImpl", true);
}
debugPrintln("all things were tried, but none was found. bailing out.");
return null;
}
