| /* |
| * 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.types; |
| |
| import org.apache.xml.dtm.XType; |
| import org.apache.xpath.objects.XObject; |
| import org.apache.xpath.objects.XSequence; |
| |
| /** |
| * Singleton class that handles automization. |
| * |
| * Created Jul 30, 2002 |
| * @author sboag |
| */ |
| public class Atomizer |
| { |
| public static XObject makeAtom(XObject xobj) |
| { |
| if(XSequence.EMPTY == xobj) |
| return xobj; |
| else if(xobj.isSingletonOrEmpty()) |
| { |
| return xobj; |
| } |
| else |
| { |
| XSequence xseq = xobj.xseq(); |
| XObject first = xseq.next(); |
| if(null == first) |
| return XSequence.EMPTY; |
| XObject second = xseq.next(); |
| if(second != null) |
| return xobj; |
| // For now, could be node or atom. Don't do any |
| // type checks here. |
| return first; |
| } |
| } |
| |
| |
| public static XObject makeFallbackAtom(XObject xobj, int requiredType) |
| { |
| switch (requiredType) |
| { |
| case XType.ANYTYPE : |
| case XType.BOOLEAN : |
| case XType.DOUBLE : |
| case XType.STRING : |
| case XType.NODE : |
| case XType.RTREEFRAG : |
| |
| // Callers should expect the actual values of these constants to |
| // changed... i.e. they should not rely on the value itself. |
| case XType.BASE64BINARY : |
| case XType.HEXBINARY : |
| case XType.FLOAT : |
| case XType.DECIMAL : |
| case XType.INTEGER : |
| case XType.ANYURI : |
| case XType.QNAME : |
| case XType.NOTATION : |
| case XType.DURATION : |
| case XType.DATETIME : |
| case XType.TIME : |
| case XType.DATE : |
| case XType.GYEARMONTH : |
| case XType.GYEAR : |
| case XType.GMONTHDAY : |
| case XType.GDAY : |
| case XType.GMONTH : |
| |
| case XType.YEARMONTHDURATION : |
| case XType.DAYTIMEDURATION : |
| |
| case XType.ANYSIMPLETYPE : |
| case XType.EMPTYSEQ : |
| |
| // Answer for a sequence when it hasn't iterated. -sb |
| case XType.SEQ : |
| break; |
| default : |
| } |
| return null; |
| } |
| } |