- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 1999 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xalan" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation and was
- * originally based on software copyright (c) 1999, Lotus
- * Development Corporation., http://www.lotus.com. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- package org.apache.xpath.compiler;
-
- import java.lang.Class;
-
- import org.apache.xpath.res.XPATHErrorResources;
-
- import org.w3c.dom.Node;
-
- import java.util.Vector;
-
- import org.apache.xpath.XPathContext;
- import org.apache.xpath.XPath;
- import org.apache.xpath.objects.XObject;
- import org.apache.xpath.functions.Function;
-
- /**
- * <meta name="usage" content="advanced"/>
- * Lazy load of functions into the function table as needed, so we don't
- * have to load all the functions allowed in XPath and XSLT on startup.
- */
- public class FuncLoader
- {
-
- /** The function ID, which may correspond to one of the FUNC_XXX values
- * found in {@link org.apache.xpath.compiler.FunctionTable}, but may
- * be a value installed by an external module. */
- private int m_funcID;
-
- /** The class name of the function. Must not be null. */
- private String m_funcName;
-
- /**
- * Get the local class name of the function class. If function name does
- * not have a '.' in it, it is assumed to be relative to
- * 'org.apache.xpath.functions'.
- *
- * @return The class name of the {org.apache.xpath.functions.Function} class.
- */
- public String getName()
- {
- return m_funcName;
- }
-
- /**
- * Construct a function loader
- *
- * @param funcName The class name of the {org.apache.xpath.functions.Function}
- * class, which, if it does not have a '.' in it, is assumed to
- * be relative to 'org.apache.xpath.functions'.
- * @param funcID The function ID, which may correspond to one of the FUNC_XXX
- * values found in {@link org.apache.xpath.compiler.FunctionTable}, but may
- * be a value installed by an external module.
- */
- public FuncLoader(String funcName, int funcID)
- {
-
- super();
-
- m_funcID = funcID;
- m_funcName = funcName;
- }
-
- /**
- * 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.
- */
- public Function getFunction() throws javax.xml.transform.TransformerException
- {
-
- try
- {
- Class function;
-
- // first get package name if necessary
- if (m_funcName.indexOf(".") < 0)
- {
-
- // String thisName = this.getClass().getName();
- // int lastdot = thisName.lastIndexOf(".");
- // String classname = thisName.substring(0,lastdot+1) + m_funcName;
- String classname = "org.apache.xpath.functions." + m_funcName;
-
- function = Class.forName(classname);
- }
- else
- function = Class.forName(m_funcName);
-
- Function func = (Function) function.newInstance();
-
- return func;
- }
- catch (ClassNotFoundException e)
- {
- throw new javax.xml.transform.TransformerException(e);
- }
- catch (IllegalAccessException e)
- {
- throw new javax.xml.transform.TransformerException(e);
- }
- catch (InstantiationException e)
- {
- throw new javax.xml.transform.TransformerException(e);
- }
- }
- }