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XML Pull parser library developed by extreme lab
/*
* $Header: /l/extreme/cvs/codes/xpp5/xis5/infoset_xpath_jaxen/org/xmlpull/infoset/xpath/jaxen/XPathFunctionContext.java,v 1.1 2005/05/16 23:59:18 aslom Exp $
* $Revision: 1.1 $
* $Date: 2005/05/16 23:59:18 $
*
* ====================================================================
*
* Copyright (C) 2000-2002 bob mcwhirter & James Strachan.
* 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 disclaimer that follows
* these conditions in the documentation and/or other materials
* provided with the distribution.
*
* 3. The name "Jaxen" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact [email protected].
*
* 4. Products derived from this software may not be called "Jaxen", nor
* may "Jaxen" appear in their name, without prior written permission
* from the Jaxen Project Management ([email protected]).
*
* In addition, we request (but do not require) that you include in the
* end-user documentation provided with the redistribution and/or in the
* software itself an acknowledgement equivalent to the following:
* "This product includes software developed by the
* Jaxen Project (http://www.jaxen.org/)."
* Alternatively, the acknowledgment may be graphical using the logos
* available at http://www.jaxen.org/
*
* 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 Jaxen AUTHORS OR THE PROJECT
* 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 Jaxen Project and was originally
* created by bob mcwhirter and
* James Strachan . For more information on the
* Jaxen Project, please see FunctionContext implementing the core XPath
* function library, with extensions.
*
*
* The core XPath function library is provided through this
* implementation of FunctionContext. Additionally,
* extension functions have been provided, as enumerated below.
*
*
*
* This class implements a Singleton pattern (see {@link #getInstance}),
* as it is perfectly re-entrant and thread-safe. If using the
* singleton, it is inadvisable to call {@link #registerFunction}
* as that will extend the global function context, affecting other
* users of the singleton. But that's your call, really, now isn't
* it? That may be what you really want to do.
*
*
*
* Extension functions:
*
*
* - matrix-concat(..)
* - evaluate(..)
*
*
* @see FunctionContext
*
* @author bob mcwhirter
*/
public class XPathFunctionContext extends SimpleFunctionContext
{
/** Singleton implementation.
*/
private static class Singleton
{
/** Singleton instance.
*/
private static XPathFunctionContext instance = new XPathFunctionContext();
}
/** Retrieve the singleton instance.
*
* @return The singleton instance.
*/
public static FunctionContext getInstance()
{
return Singleton.instance;
}
/** Construct.
*
*
* Construct with all core XPath functions registered.
*
*/
public XPathFunctionContext()
{
registerFunction( null, // namespace URI
"boolean",
new BooleanFunction() );
registerFunction( null, // namespace URI
"ceiling",
new CeilingFunction() );
registerFunction( null, // namespace URI
"concat",
new ConcatFunction() );
registerFunction( null, // namespace URI
"contains",
new ContainsFunction() );
registerFunction( null, // namespace URI
"count",
new CountFunction() );
registerFunction( null, // namespace URI
"document",
new DocumentFunction() );
registerFunction( null, // namespace URI
"false",
new FalseFunction() );
registerFunction( null, // namespace URI
"floor",
new FloorFunction() );
registerFunction( null, // namespace URI
"id",
new IdFunction() );
registerFunction( null, // namespace URI
"last",
new LastFunction() );
registerFunction( null, // namespace URI
"local-name",
new LocalNameFunction() );
registerFunction( null, // namespace URI
"name",
new NameFunction() );
registerFunction( null, // namespace URI
"namespace-uri",
new NamespaceUriFunction() );
registerFunction( null, // namespace URI
"normalize-space",
new NormalizeSpaceFunction() );
registerFunction( null, // namespace URI
"not",
new NotFunction() );
registerFunction( null, // namespace URI
"number",
new NumberFunction() );
registerFunction( null, // namespace URI
"position",
new PositionFunction() );
registerFunction( null, // namespace URI
"round",
new RoundFunction() );
registerFunction( null, // namespace URI
"starts-with",
new StartsWithFunction() );
registerFunction( null, // namespace URI
"string",
new StringFunction() );
registerFunction( null, // namespace URI
"string-length",
new StringLengthFunction() );
registerFunction( null, // namespace URI
"substring-after",
new SubstringAfterFunction() );
registerFunction( null, // namespace URI
"substring-before",
new SubstringBeforeFunction() );
registerFunction( null, // namespace URI
"substring",
new SubstringFunction() );
registerFunction( null, // namespace URI
"sum",
new SumFunction() );
registerFunction( null, // namespace URI
"true",
new TrueFunction() );
registerFunction( null, // namespace URI
"translate",
new TranslateFunction() );
// register extension functions
// extension functions should go into a namespace, but which one?
// for now, keep them in default namespace to not to break any code
registerFunction( null, // namespace URI
"matrix-concat",
new MatrixConcatFunction() );
registerFunction( null, // namespace URI
"evaluate",
new EvaluateFunction() );
registerFunction( null, // namespace URI
"lower-case",
new LowerFunction() );
registerFunction( null, // namespace URI
"upper-case",
new UpperFunction() );
registerFunction( null, // namespace URI
"ends-with",
new EndsWithFunction() );
}
}
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