com.sun.org.apache.xalan.internal.utils.ObjectFactory Java Examples

/**
 * Retrieve a propery bundle from a specified file
 *
 * @param file The string name of the property file.  The name
 * should already be fully qualified as path/filename
 * @param target The target property bag the file will be placed into.
 */
public void loadPropertyFile(String file, Properties target)
{
  try
  {
    // Use SecuritySupport class to provide priveleged access to property file
    InputStream is = SecuritySupport.getResourceAsStream(ObjectFactory.findClassLoader(),
                                            file);

    // get a buffered version
    BufferedInputStream bis = new BufferedInputStream(is);

    target.load(bis);  // and load up the property bag from this
    bis.close();  // close out after reading
  }
  catch (Exception ex)
  {
    // ex.printStackTrace();
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(ex);
  }
}
 

/**
 * Report product version information from Ant.
 *
 * @param h Map to put information in
 */
protected void checkAntVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  try
  {
    final String ANT_VERSION_CLASS = "org.apache.tools.ant.Main";
    final String ANT_VERSION_METHOD = "getAntVersion"; // noArgs
    final Class noArgs[] = new Class[0];

    Class clazz = ObjectFactory.findProviderClass(ANT_VERSION_CLASS, true);

    Method method = clazz.getMethod(ANT_VERSION_METHOD, noArgs);
    Object returnValue = method.invoke(null, new Object[0]);

    h.put(VERSION + "ant", (String)returnValue);
  }
  catch (Exception e)
  {
    h.put(VERSION + "ant", CLASS_NOTPRESENT);
  }
}
 

/**
 * Report product version information from Ant.
 *
 * @param h Map to put information in
 */
protected void checkAntVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  try
  {
    final String ANT_VERSION_CLASS = "org.apache.tools.ant.Main";
    final String ANT_VERSION_METHOD = "getAntVersion"; // noArgs
    final Class noArgs[] = new Class[0];

    Class clazz = ObjectFactory.findProviderClass(ANT_VERSION_CLASS, true);

    Method method = clazz.getMethod(ANT_VERSION_METHOD, noArgs);
    Object returnValue = method.invoke(null, new Object[0]);

    h.put(VERSION + "ant", (String)returnValue);
  }
  catch (Exception e)
  {
    h.put(VERSION + "ant", CLASS_NOTPRESENT);
  }
}
 

/**
 * Report version information about JAXP interfaces.
 *
 * Currently distinguishes between JAXP 1.0.1 and JAXP 1.1,
 * and not found; only tests the interfaces, and does not
 * check for reference implementation versions.
 *
 * @param h Map to put information in
 */
protected void checkJAXPVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  Class clazz = null;

  try
  {
    final String JAXP1_CLASS = "javax.xml.stream.XMLStreamConstants";

    clazz = ObjectFactory.findProviderClass(JAXP1_CLASS, true);

    // If we succeeded, we have JAXP 1.4 available
    h.put(VERSION + "JAXP", "1.4");
  }
  catch (Exception e)
  {
      h.put(ERROR + VERSION + "JAXP", "1.3");
      h.put(ERROR, ERROR_FOUND);
    }
    }
 

/**
 * Report version information about JAXP interfaces.
 *
 * Currently distinguishes between JAXP 1.0.1 and JAXP 1.1,
 * and not found; only tests the interfaces, and does not
 * check for reference implementation versions.
 *
 * @param h Map to put information in
 */
protected void checkJAXPVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  Class clazz = null;

  try
  {
    final String JAXP1_CLASS = "javax.xml.stream.XMLStreamConstants";

    clazz = ObjectFactory.findProviderClass(JAXP1_CLASS, true);

    // If we succeeded, we have JAXP 1.4 available
    h.put(VERSION + "JAXP", "1.4");
  }
  catch (Exception e)
  {
      h.put(ERROR + VERSION + "JAXP", "1.3");
      h.put(ERROR, ERROR_FOUND);
    }
    }
 

/**
 * Get a Function instance that this instance is liaisoning for.
 *
 * @return non-null reference to Function derivative.
 *
 * @throws javax.xml.transform.TransformerException if ClassNotFoundException,
 *    IllegalAccessException, or InstantiationException is thrown.
 */
Function getFunction() throws TransformerException
{
  try
  {
    String className = m_funcName;
    if (className.indexOf(".") < 0) {
      className = "com.sun.org.apache.xpath.internal.functions." + className;
    }
    //hack for loading only built-in function classes.
    String subString = className.substring(0,className.lastIndexOf('.'));
    if(!(subString.equals ("com.sun.org.apache.xalan.internal.templates") ||
         subString.equals ("com.sun.org.apache.xpath.internal.functions"))) {
          throw new TransformerException("Application can't install his own xpath function.");
    }

    return (Function) ObjectFactory.newInstance(className, true);

  }
  catch (ConfigurationError e)
  {
    throw new TransformerException(e.getException());
  }
}
 

/**
 * Retrieve a propery bundle from a specified file
 *
 * @param file The string name of the property file.  The name
 * should already be fully qualified as path/filename
 * @param target The target property bag the file will be placed into.
 */
public void loadPropertyFile(String file, Properties target)
{
  try
  {
    // Use SecuritySupport class to provide priveleged access to property file
    InputStream is = SecuritySupport.getResourceAsStream(ObjectFactory.findClassLoader(),
                                            file);

    // get a buffered version
    BufferedInputStream bis = new BufferedInputStream(is);

    target.load(bis);  // and load up the property bag from this
    bis.close();  // close out after reading
  }
  catch (Exception ex)
  {
    // ex.printStackTrace();
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(ex);
  }
}
 

/**
 * Get a Function instance that this instance is liaisoning for.
 *
 * @return non-null reference to Function derivative.
 *
 * @throws javax.xml.transform.TransformerException if ClassNotFoundException,
 *    IllegalAccessException, or InstantiationException is thrown.
 */
Function getFunction() throws TransformerException
{
  try
  {
    String className = m_funcName;
    if (className.indexOf(".") < 0) {
      className = "com.sun.org.apache.xpath.internal.functions." + className;
    }
    //hack for loading only built-in function classes.
    String subString = className.substring(0,className.lastIndexOf('.'));
    if(!(subString.equals ("com.sun.org.apache.xalan.internal.templates") ||
         subString.equals ("com.sun.org.apache.xpath.internal.functions"))) {
          throw new TransformerException("Application can't install his own xpath function.");
    }

    return (Function) ObjectFactory.newInstance(className, true);

  }
  catch (ConfigurationError e)
  {
    throw new TransformerException(e.getException());
  }
}
 

/**
 * Retrieve a propery bundle from a specified file
 *
 * @param file The string name of the property file.  The name
 * should already be fully qualified as path/filename
 * @param target The target property bag the file will be placed into.
 */
public void loadPropertyFile(String file, Properties target)
{
  try
  {
    // Use SecuritySupport class to provide priveleged access to property file
    InputStream is = SecuritySupport.getResourceAsStream(ObjectFactory.findClassLoader(),
                                            file);

    // get a buffered version
    BufferedInputStream bis = new BufferedInputStream(is);

    target.load(bis);  // and load up the property bag from this
    bis.close();  // close out after reading
  }
  catch (Exception ex)
  {
    // ex.printStackTrace();
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(ex);
  }
}
 

/**
 * Get a Function instance that this instance is liaisoning for.
 *
 * @return non-null reference to Function derivative.
 *
 * @throws javax.xml.transform.TransformerException if ClassNotFoundException,
 *    IllegalAccessException, or InstantiationException is thrown.
 */
Function getFunction() throws TransformerException
{
  try
  {
    String className = m_funcName;
    if (className.indexOf(".") < 0) {
      className = "com.sun.org.apache.xpath.internal.functions." + className;
    }
    //hack for loading only built-in function classes.
    String subString = className.substring(0,className.lastIndexOf('.'));
    if(!(subString.equals ("com.sun.org.apache.xalan.internal.templates") ||
         subString.equals ("com.sun.org.apache.xpath.internal.functions"))) {
          throw new TransformerException("Application can't install his own xpath function.");
    }

    return (Function) ObjectFactory.newInstance(className, true);

  }
  catch (ConfigurationError e)
  {
    throw new TransformerException(e.getException());
  }
}
 

/**
 * Report version information about JAXP interfaces.
 *
 * Currently distinguishes between JAXP 1.0.1 and JAXP 1.1,
 * and not found; only tests the interfaces, and does not
 * check for reference implementation versions.
 *
 * @param h Map to put information in
 */
protected void checkJAXPVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  Class clazz = null;

  try
  {
    final String JAXP1_CLASS = "javax.xml.stream.XMLStreamConstants";

    clazz = ObjectFactory.findProviderClass(JAXP1_CLASS, true);

    // If we succeeded, we have JAXP 1.4 available
    h.put(VERSION + "JAXP", "1.4");
  }
  catch (Exception e)
  {
      h.put(ERROR + VERSION + "JAXP", "1.3");
      h.put(ERROR, ERROR_FOUND);
    }
    }
 

/**
 * Report product version information from Ant.
 *
 * @param h Map to put information in
 */
protected void checkAntVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  try
  {
    final String ANT_VERSION_CLASS = "org.apache.tools.ant.Main";
    final String ANT_VERSION_METHOD = "getAntVersion"; // noArgs
    final Class noArgs[] = new Class[0];

    Class clazz = ObjectFactory.findProviderClass(ANT_VERSION_CLASS, true);

    Method method = clazz.getMethod(ANT_VERSION_METHOD, noArgs);
    Object returnValue = method.invoke(null, new Object[0]);

    h.put(VERSION + "ant", (String)returnValue);
  }
  catch (Exception e)
  {
    h.put(VERSION + "ant", CLASS_NOTPRESENT);
  }
}
 

/**
 * Report version info from DOM interfaces.
 *
 * @param h Map to put information in
 */
protected boolean checkDOML3(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  final String DOM_CLASS = "org.w3c.dom.Document";
  final String DOM_LEVEL3_METHOD = "getDoctype";  // no parameter

  try
  {
    Class clazz = ObjectFactory.findProviderClass(DOM_CLASS, true);

    Method method = clazz.getMethod(DOM_LEVEL3_METHOD, (Class<?>[])null);

    // If we succeeded, we have loaded interfaces from a
    //  level 3 DOM somewhere
    h.put(VERSION + "DOM", "3.0");
    return true;
  }
  catch (Exception e)
  {
    return false;
  }
}
 

/**
 * Retrieve a propery bundle from a specified file
 *
 * @param file The string name of the property file.  The name
 * should already be fully qualified as path/filename
 * @param target The target property bag the file will be placed into.
 */
public void loadPropertyFile(String file, Properties target)
{
  try
  {
    // Use SecuritySupport class to provide priveleged access to property file
    InputStream is = SecuritySupport.getResourceAsStream(ObjectFactory.findClassLoader(),
                                            file);

    // get a buffered version
    BufferedInputStream bis = new BufferedInputStream(is);

    target.load(bis);  // and load up the property bag from this
    bis.close();  // close out after reading
  }
  catch (Exception ex)
  {
    // ex.printStackTrace();
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(ex);
  }
}
 

/**
 * Report version information about JAXP interfaces.
 *
 * Currently distinguishes between JAXP 1.0.1 and JAXP 1.1,
 * and not found; only tests the interfaces, and does not
 * check for reference implementation versions.
 *
 * @param h Map to put information in
 */
protected void checkJAXPVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  Class clazz = null;

  try
  {
    final String JAXP1_CLASS = "javax.xml.stream.XMLStreamConstants";

    clazz = ObjectFactory.findProviderClass(JAXP1_CLASS, true);

    // If we succeeded, we have JAXP 1.4 available
    h.put(VERSION + "JAXP", "1.4");
  }
  catch (Exception e)
  {
      h.put(ERROR + VERSION + "JAXP", "1.3");
      h.put(ERROR, ERROR_FOUND);
    }
    }
 

/**
 * Report product version information from Ant.
 *
 * @param h Map to put information in
 */
protected void checkAntVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  try
  {
    final String ANT_VERSION_CLASS = "org.apache.tools.ant.Main";
    final String ANT_VERSION_METHOD = "getAntVersion"; // noArgs
    final Class noArgs[] = new Class[0];

    Class clazz = ObjectFactory.findProviderClass(ANT_VERSION_CLASS, true);

    Method method = clazz.getMethod(ANT_VERSION_METHOD, noArgs);
    Object returnValue = method.invoke(null, new Object[0]);

    h.put(VERSION + "ant", (String)returnValue);
  }
  catch (Exception e)
  {
    h.put(VERSION + "ant", CLASS_NOTPRESENT);
  }
}
 

/**
 * Report version info from DOM interfaces.
 *
 * @param h Map to put information in
 */
protected boolean checkDOML3(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  final String DOM_CLASS = "org.w3c.dom.Document";
  final String DOM_LEVEL3_METHOD = "getDoctype";  // no parameter

  try
  {
    Class clazz = ObjectFactory.findProviderClass(DOM_CLASS, true);

    Method method = clazz.getMethod(DOM_LEVEL3_METHOD, (Class<?>[])null);

    // If we succeeded, we have loaded interfaces from a
    //  level 3 DOM somewhere
    h.put(VERSION + "DOM", "3.0");
    return true;
  }
  catch (Exception e)
  {
    return false;
  }
}
 

/**
 * Retrieve a propery bundle from a specified file
 *
 * @param file The string name of the property file.  The name
 * should already be fully qualified as path/filename
 * @param target The target property bag the file will be placed into.
 */
public void loadPropertyFile(String file, Properties target)
{
  try
  {
    // Use SecuritySupport class to provide priveleged access to property file
    InputStream is = SecuritySupport.getResourceAsStream(ObjectFactory.findClassLoader(),
                                            file);

    // get a buffered version
    BufferedInputStream bis = new BufferedInputStream(is);

    target.load(bis);  // and load up the property bag from this
    bis.close();  // close out after reading
  }
  catch (Exception ex)
  {
    // ex.printStackTrace();
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(ex);
  }
}
 

/**
 * Get a Function instance that this instance is liaisoning for.
 *
 * @return non-null reference to Function derivative.
 *
 * @throws javax.xml.transform.TransformerException if ClassNotFoundException,
 *    IllegalAccessException, or InstantiationException is thrown.
 */
Function getFunction() throws TransformerException
{
  try
  {
    String className = m_funcName;
    if (className.indexOf(".") < 0) {
      className = "com.sun.org.apache.xpath.internal.functions." + className;
    }
    //hack for loading only built-in function classes.
    String subString = className.substring(0,className.lastIndexOf('.'));
    if(!(subString.equals ("com.sun.org.apache.xalan.internal.templates") ||
         subString.equals ("com.sun.org.apache.xpath.internal.functions"))) {
          throw new TransformerException("Application can't install his own xpath function.");
    }

    return (Function) ObjectFactory.newInstance(className, true);

  }
  catch (ConfigurationError e)
  {
    throw new TransformerException(e.getException());
  }
}
 

/**
 * Report version information about JAXP interfaces.
 *
 * Currently distinguishes between JAXP 1.0.1 and JAXP 1.1,
 * and not found; only tests the interfaces, and does not
 * check for reference implementation versions.
 *
 * @param h Map to put information in
 */
protected void checkJAXPVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  Class clazz = null;

  try
  {
    final String JAXP1_CLASS = "javax.xml.stream.XMLStreamConstants";

    clazz = ObjectFactory.findProviderClass(JAXP1_CLASS, true);

    // If we succeeded, we have JAXP 1.4 available
    h.put(VERSION + "JAXP", "1.4");
  }
  catch (Exception e)
  {
      h.put(ERROR + VERSION + "JAXP", "1.3");
      h.put(ERROR, ERROR_FOUND);
    }
    }
 

/**
 * Report product version information from Ant.
 *
 * @param h Map to put information in
 */
protected void checkAntVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  try
  {
    final String ANT_VERSION_CLASS = "org.apache.tools.ant.Main";
    final String ANT_VERSION_METHOD = "getAntVersion"; // noArgs
    final Class noArgs[] = new Class[0];

    Class clazz = ObjectFactory.findProviderClass(ANT_VERSION_CLASS, true);

    Method method = clazz.getMethod(ANT_VERSION_METHOD, noArgs);
    Object returnValue = method.invoke(null, new Object[0]);

    h.put(VERSION + "ant", (String)returnValue);
  }
  catch (Exception e)
  {
    h.put(VERSION + "ant", CLASS_NOTPRESENT);
  }
}
 

/**
 * Report version info from DOM interfaces.
 *
 * @param h Map to put information in
 */
protected boolean checkDOML3(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  final String DOM_CLASS = "org.w3c.dom.Document";
  final String DOM_LEVEL3_METHOD = "getDoctype";  // no parameter

  try
  {
    Class clazz = ObjectFactory.findProviderClass(DOM_CLASS, true);

    Method method = clazz.getMethod(DOM_LEVEL3_METHOD, (Class<?>[])null);

    // If we succeeded, we have loaded interfaces from a
    //  level 3 DOM somewhere
    h.put(VERSION + "DOM", "3.0");
    return true;
  }
  catch (Exception e)
  {
    return false;
  }
}
 

/**
 * Retrieve a propery bundle from a specified file
 *
 * @param file The string name of the property file.  The name
 * should already be fully qualified as path/filename
 * @param target The target property bag the file will be placed into.
 */
public void loadPropertyFile(String file, Properties target)
{
  try
  {
    // Use SecuritySupport class to provide priveleged access to property file
    InputStream is = SecuritySupport.getResourceAsStream(ObjectFactory.findClassLoader(),
                                            file);

    // get a buffered version
    BufferedInputStream bis = new BufferedInputStream(is);

    target.load(bis);  // and load up the property bag from this
    bis.close();  // close out after reading
  }
  catch (Exception ex)
  {
    // ex.printStackTrace();
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(ex);
  }
}
 

/**
 * Get a Function instance that this instance is liaisoning for.
 *
 * @return non-null reference to Function derivative.
 *
 * @throws javax.xml.transform.TransformerException if ClassNotFoundException,
 *    IllegalAccessException, or InstantiationException is thrown.
 */
Function getFunction() throws TransformerException
{
  try
  {
    String className = m_funcName;
    if (className.indexOf(".") < 0) {
      className = "com.sun.org.apache.xpath.internal.functions." + className;
    }
    //hack for loading only built-in function classes.
    String subString = className.substring(0,className.lastIndexOf('.'));
    if(!(subString.equals ("com.sun.org.apache.xalan.internal.templates") ||
         subString.equals ("com.sun.org.apache.xpath.internal.functions"))) {
          throw new TransformerException("Application can't install his own xpath function.");
    }

    return (Function) ObjectFactory.newInstance(className, true);

  }
  catch (ConfigurationError e)
  {
    throw new TransformerException(e.getException());
  }
}
 

/**
 * Get a Function instance that this instance is liaisoning for.
 *
 * @return non-null reference to Function derivative.
 *
 * @throws javax.xml.transform.TransformerException if ClassNotFoundException,
 *    IllegalAccessException, or InstantiationException is thrown.
 */
Function getFunction() throws TransformerException
{
  try
  {
    String className = m_funcName;
    if (className.indexOf(".") < 0) {
      className = "com.sun.org.apache.xpath.internal.functions." + className;
    }
    //hack for loading only built-in function classes.
    String subString = className.substring(0,className.lastIndexOf('.'));
    if(!(subString.equals ("com.sun.org.apache.xalan.internal.templates") ||
         subString.equals ("com.sun.org.apache.xpath.internal.functions"))) {
          throw new TransformerException("Application can't install his own xpath function.");
    }

    return (Function) ObjectFactory.newInstance(className, true);

  }
  catch (ConfigurationError e)
  {
    throw new TransformerException(e.getException());
  }
}
 

/**
 * Get a Function instance that this instance is liaisoning for.
 *
 * @return non-null reference to Function derivative.
 *
 * @throws javax.xml.transform.TransformerException if ClassNotFoundException,
 *    IllegalAccessException, or InstantiationException is thrown.
 */
Function getFunction() throws TransformerException
{
  try
  {
    String className = m_funcName;
    if (className.indexOf(".") < 0) {
      className = "com.sun.org.apache.xpath.internal.functions." + className;
    }
    //hack for loading only built-in function classes.
    String subString = className.substring(0,className.lastIndexOf('.'));
    if(!(subString.equals ("com.sun.org.apache.xalan.internal.templates") ||
         subString.equals ("com.sun.org.apache.xpath.internal.functions"))) {
          throw new TransformerException("Application can't install his own xpath function.");
    }

    return (Function) ObjectFactory.newInstance(className, true);

  }
  catch (ConfigurationError e)
  {
    throw new TransformerException(e.getException());
  }
}
 

/**
 * Report version information about JAXP interfaces.
 *
 * Currently distinguishes between JAXP 1.0.1 and JAXP 1.1,
 * and not found; only tests the interfaces, and does not
 * check for reference implementation versions.
 *
 * @param h Map to put information in
 */
protected void checkJAXPVersion(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  Class clazz = null;

  try
  {
    final String JAXP1_CLASS = "javax.xml.stream.XMLStreamConstants";

    clazz = ObjectFactory.findProviderClass(JAXP1_CLASS, true);

    // If we succeeded, we have JAXP 1.4 available
    h.put(VERSION + "JAXP", "1.4");
  }
  catch (Exception e)
  {
      h.put(ERROR + VERSION + "JAXP", "1.3");
      h.put(ERROR, ERROR_FOUND);
    }
    }
 

/**
 * Report version info from DOM interfaces.
 *
 * @param h Map to put information in
 */
protected boolean checkDOML3(Map<String, Object> h)
{

  if (null == h)
    h = new HashMap<>();

  final String DOM_CLASS = "org.w3c.dom.Document";
  final String DOM_LEVEL3_METHOD = "getDoctype";  // no parameter

  try
  {
    Class clazz = ObjectFactory.findProviderClass(DOM_CLASS, true);

    Method method = clazz.getMethod(DOM_LEVEL3_METHOD, (Class<?>[])null);

    // If we succeeded, we have loaded interfaces from a
    //  level 3 DOM somewhere
    h.put(VERSION + "DOM", "3.0");
    return true;
  }
  catch (Exception e)
  {
    return false;
  }
}
 

/**
 * Retrieve a propery bundle from a specified file
 *
 * @param file The string name of the property file.  The name
 * should already be fully qualified as path/filename
 * @param target The target property bag the file will be placed into.
 */
public void loadPropertyFile(String file, Properties target)
{
  try
  {
    // Use SecuritySupport class to provide priveleged access to property file
    InputStream is = SecuritySupport.getResourceAsStream(ObjectFactory.findClassLoader(),
                                            file);

    // get a buffered version
    BufferedInputStream bis = new BufferedInputStream(is);

    target.load(bis);  // and load up the property bag from this
    bis.close();  // close out after reading
  }
  catch (Exception ex)
  {
    // ex.printStackTrace();
    throw new com.sun.org.apache.xml.internal.utils.WrappedRuntimeException(ex);
  }
}
 

/**
 * Get a Function instance that this instance is liaisoning for.
 *
 * @return non-null reference to Function derivative.
 *
 * @throws javax.xml.transform.TransformerException if ClassNotFoundException,
 *    IllegalAccessException, or InstantiationException is thrown.
 */
Function getFunction() throws TransformerException
{
  try
  {
    String className = m_funcName;
    if (className.indexOf(".") < 0) {
      className = "com.sun.org.apache.xpath.internal.functions." + className;
    }
    //hack for loading only built-in function classes.
    String subString = className.substring(0,className.lastIndexOf('.'));
    if(!(subString.equals ("com.sun.org.apache.xalan.internal.templates") ||
         subString.equals ("com.sun.org.apache.xpath.internal.functions"))) {
          throw new TransformerException("Application can't install his own xpath function.");
    }

    return (Function) ObjectFactory.newInstance(className, true);

  }
  catch (ConfigurationError e)
  {
    throw new TransformerException(e.getException());
  }
}