jaxp-api-1.3/src/main/java/javax/xml/validation/SchemaFactoryFinder.java [40:256]:
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final class SchemaFactoryFinder  {

    /** debug support code. */
    private static boolean debug = false;

    /**
     * <p>Cache properties for performance.</p>
     */
	private static Properties cacheProps = new Properties();
    
	/**
	 * <p>First time requires initialization overhead.</p>
	 */
	private static boolean firstTime = true;
    
    /**
     * Default columns per line.
     */
    private static final int DEFAULT_LINE_LENGTH = 80;
    
    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>Conditional debug printing.</p>
     * 
     * @param msg to print
     */
    private static void debugPrintln(String msg) {
        if (debug) {
            System.err.println("JAXP: " + msg);
        }
    }
    
    /**
     * <p><code>ClassLoader</code> to use to find <code>SchemaFactory</code>.</p>
     */
    private final ClassLoader classLoader;
    
    /**
     * <p>Constructor that specifies <code>ClassLoader</code> to use
     * to find <code>SchemaFactory</code>.</p>
     * 
     * @param loader
     *      to be used to load resource, {@link SchemaFactory}, and
     *      {@link SchemaFactoryLoader} implementations during
     *      the resolution process.
     *      If this parameter is null, the default system class loader
     *      will be used.
     */
    public SchemaFactoryFinder(ClassLoader loader) {
        this.classLoader = loader;
        if( debug ) {
            debugDisplayClassLoader();
        }
    }
    
    private void debugDisplayClassLoader() {
        try {
            if( classLoader == SecuritySupport.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");
    }
    
    /**
     * <p>Creates a new {@link SchemaFactory} object for the specified
     * schema language.</p>
     * 
     * @param schemaLanguage
     *      See {@link SchemaFactory Schema Language} table in <code>SchemaFactory</code>
     *      for the list of available schema languages.
     * 
     * @return <code>null</code> if the callee fails to create one.
     * 
     * @throws NullPointerException
     *      If the <tt>schemaLanguage</tt> parameter is null.
     */
    public SchemaFactory newFactory(String schemaLanguage) {
        if(schemaLanguage==null)        throw new NullPointerException();
        SchemaFactory f = _newFactory(schemaLanguage);
        if (debug) {
            if (f != null) {
                debugPrintln("factory '" + f.getClass().getName() + "' was found for " + schemaLanguage);
            } else {
                debugPrintln("unable to find a factory for " + schemaLanguage);
            }
        }
        return f;
    }
    
    /**
     * <p>Lookup a <code>SchemaFactory</code> for the given <code>schemaLanguage</code>.</p>
     * 
     * @param schemaLanguage Schema language to lookup <code>SchemaFactory</code> for.
     *  
     * @return <code>SchemaFactory</code> for the given <code>schemaLanguage</code>.
     */
    private SchemaFactory _newFactory(String schemaLanguage) {
        SchemaFactory sf;
        String propertyName = SERVICE_CLASS.getName() + ":" + schemaLanguage;
        
        try {
            // If we are deployed into an OSGi environment, leverage it
            Class spiClass = org.apache.servicemix.specs.locator.OsgiLocator.locate(SERVICE_CLASS);
            if (spiClass != null) {
                return (SchemaFactory) spiClass.newInstance();
            }
        } catch (Throwable e) {
        }

        // system property look up
        try {
            if (debug) debugPrintln("Looking up system property '"+propertyName+"'" );
            String r = SecuritySupport.getSystemProperty(propertyName);
            if (r != null) {
                if (debug) debugPrintln("The value is '"+r+"'");
                sf = createInstance(r);
                if(sf!=null)    return sf;
            } 
            else if (debug) {
                debugPrintln("The property is undefined.");
            }
        } 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) {
                sf = createInstance(factoryClassName);
                if(sf != null){
                    return sf;
                }
            }
        } catch (Exception ex) {
            if (debug) {
                ex.printStackTrace();
            } 
        }

        /**
        // try to read from $java.home/lib/jaxp.properties
        try {
            String javah = ss.getSystemProperty( "java.home" );
            String configFile = javah + File.separator +
            "lib" + File.separator + "jaxp.properties";
            File f = new File( configFile );
            if( ss.doesFileExist(f)) {
                sf = loadFromProperty(
                        propertyName,f.getAbsolutePath(), new FileInputStream(f));
                if(sf!=null)    return sf;
            } else {
                debugPrintln("Tried to read "+ f.getAbsolutePath()+", but it doesn't exist.");
            }
        } catch(Throwable e) {
            if( debug ) {
                debugPrintln("failed to read $java.home/lib/jaxp.properties");
                e.printStackTrace();
            }
        }
         */
        
        // try META-INF/services files
        Iterator sitr = createServiceFileIterator();
        while(sitr.hasNext()) {
            URL resource = (URL)sitr.next();
            if (debug) debugPrintln("looking into " + resource);
            try {
                sf = loadFromServicesFile(schemaLanguage,resource.toExternalForm(),SecuritySupport.getURLInputStream(resource));
                if(sf!=null)    return sf;
            } catch(IOException e) {
                if( debug ) {
                    debugPrintln("failed to read "+resource);
                    e.printStackTrace();
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jaxp-api-1.4/src/main/java/javax/xml/validation/SchemaFactoryFinder.java [41:257]:
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final class SchemaFactoryFinder  {

    /** debug support code. */
    private static boolean debug = false;

    /**
     * <p>Cache properties for performance.</p>
     */
	private static Properties cacheProps = new Properties();
    
	/**
	 * <p>First time requires initialization overhead.</p>
	 */
	private static boolean firstTime = true;
    
    /**
     * Default columns per line.
     */
    private static final int DEFAULT_LINE_LENGTH = 80;
    
    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>Conditional debug printing.</p>
     * 
     * @param msg to print
     */
    private static void debugPrintln(String msg) {
        if (debug) {
            System.err.println("JAXP: " + msg);
        }
    }
    
    /**
     * <p><code>ClassLoader</code> to use to find <code>SchemaFactory</code>.</p>
     */
    private final ClassLoader classLoader;
    
    /**
     * <p>Constructor that specifies <code>ClassLoader</code> to use
     * to find <code>SchemaFactory</code>.</p>
     * 
     * @param loader
     *      to be used to load resource, {@link SchemaFactory}, and
     *      {@link SchemaFactoryLoader} implementations during
     *      the resolution process.
     *      If this parameter is null, the default system class loader
     *      will be used.
     */
    public SchemaFactoryFinder(ClassLoader loader) {
        this.classLoader = loader;
        if( debug ) {
            debugDisplayClassLoader();
        }
    }
    
    private void debugDisplayClassLoader() {
        try {
            if( classLoader == SecuritySupport.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");
    }
    
    /**
     * <p>Creates a new {@link SchemaFactory} object for the specified
     * schema language.</p>
     * 
     * @param schemaLanguage
     *      See {@link SchemaFactory Schema Language} table in <code>SchemaFactory</code>
     *      for the list of available schema languages.
     * 
     * @return <code>null</code> if the callee fails to create one.
     * 
     * @throws NullPointerException
     *      If the <tt>schemaLanguage</tt> parameter is null.
     */
    public SchemaFactory newFactory(String schemaLanguage) {
        if(schemaLanguage==null)        throw new NullPointerException();
        SchemaFactory f = _newFactory(schemaLanguage);
        if (debug) {
            if (f != null) {
                debugPrintln("factory '" + f.getClass().getName() + "' was found for " + schemaLanguage);
            } else {
                debugPrintln("unable to find a factory for " + schemaLanguage);
            }
        }
        return f;
    }
    
    /**
     * <p>Lookup a <code>SchemaFactory</code> for the given <code>schemaLanguage</code>.</p>
     * 
     * @param schemaLanguage Schema language to lookup <code>SchemaFactory</code> for.
     *  
     * @return <code>SchemaFactory</code> for the given <code>schemaLanguage</code>.
     */
    private SchemaFactory _newFactory(String schemaLanguage) {
        SchemaFactory sf;
        String propertyName = SERVICE_CLASS.getName() + ":" + schemaLanguage;
        
        try {
            // If we are deployed into an OSGi environment, leverage it
            Class spiClass = org.apache.servicemix.specs.locator.OsgiLocator.locate(SERVICE_CLASS);
            if (spiClass != null) {
                return (SchemaFactory) spiClass.newInstance();
            }
        } catch (Throwable e) {
        }

        // system property look up
        try {
            if (debug) debugPrintln("Looking up system property '"+propertyName+"'" );
            String r = SecuritySupport.getSystemProperty(propertyName);
            if (r != null) {
                if (debug) debugPrintln("The value is '"+r+"'");
                sf = createInstance(r);
                if(sf!=null)    return sf;
            } 
            else if (debug) {
                debugPrintln("The property is undefined.");
            }
        } 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) {
                sf = createInstance(factoryClassName);
                if(sf != null){
                    return sf;
                }
            }
        } catch (Exception ex) {
            if (debug) {
                ex.printStackTrace();
            } 
        }

        /**
        // try to read from $java.home/lib/jaxp.properties
        try {
            String javah = ss.getSystemProperty( "java.home" );
            String configFile = javah + File.separator +
            "lib" + File.separator + "jaxp.properties";
            File f = new File( configFile );
            if( ss.doesFileExist(f)) {
                sf = loadFromProperty(
                        propertyName,f.getAbsolutePath(), new FileInputStream(f));
                if(sf!=null)    return sf;
            } else {
                debugPrintln("Tried to read "+ f.getAbsolutePath()+", but it doesn't exist.");
            }
        } catch(Throwable e) {
            if( debug ) {
                debugPrintln("failed to read $java.home/lib/jaxp.properties");
                e.printStackTrace();
            }
        }
         */
        
        // try META-INF/services files
        Iterator sitr = createServiceFileIterator();
        while(sitr.hasNext()) {
            URL resource = (URL)sitr.next();
            if (debug) debugPrintln("looking into " + resource);
            try {
                sf = loadFromServicesFile(schemaLanguage,resource.toExternalForm(),SecuritySupport.getURLInputStream(resource));
                if(sf!=null)    return sf;
            } catch(IOException e) {
                if( debug ) {
                    debugPrintln("failed to read "+resource);
                    e.printStackTrace();
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