00001 /* 00002 * The Apache Software License, Version 1.1 00003 * 00004 * 00005 * Copyright (c) 1999 The Apache Software Foundation. All rights 00006 * reserved. 00007 * 00008 * Redistribution and use in source and binary forms, with or without 00009 * modification, are permitted provided that the following conditions 00010 * are met: 00011 * 00012 * 1. Redistributions of source code must retain the above copyright 00013 * notice, this list of conditions and the following disclaimer. 00014 * 00015 * 2. Redistributions in binary form must reproduce the above copyright 00016 * notice, this list of conditions and the following disclaimer in 00017 * the documentation and/or other materials provided with the 00018 * distribution. 00019 * 00020 * 3. The end-user documentation included with the redistribution, 00021 * if any, must include the following acknowledgment: 00022 * "This product includes software developed by the 00023 * Apache Software Foundation (http://www.apache.org/)." 00024 * Alternately, this acknowledgment may appear in the software itself, 00025 * if and wherever such third-party acknowledgments normally appear. 00026 * 00027 * 4. The names "Xalan" and "Apache Software Foundation" must 00028 * not be used to endorse or promote products derived from this 00029 * software without prior written permission. For written 00030 * permission, please contact apache@apache.org. 00031 * 00032 * 5. Products derived from this software may not be called "Apache", 00033 * nor may "Apache" appear in their name, without prior written 00034 * permission of the Apache Software Foundation. 00035 * 00036 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 00037 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00038 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00039 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 00040 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00041 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00042 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 00043 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 00044 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00045 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 00046 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00047 * SUCH DAMAGE. 00048 * ==================================================================== 00049 * 00050 * This software consists of voluntary contributions made by many 00051 * individuals on behalf of the Apache Software Foundation and was 00052 * originally based on software copyright (c) 1999, International 00053 * Business Machines, Inc., http://www.ibm.com. For more 00054 * information on the Apache Software Foundation, please see 00055 * <http://www.apache.org/>. 00056 */ 00057 #if !defined(XOBJECT_HEADER_GUARD_1357924680) 00058 #define XOBJECT_HEADER_GUARD_1357924680 00059 00060 00061 00062 // Base include file. Must be first. 00063 #include <XPath/XPathDefinitions.hpp> 00064 00065 00066 00067 #include <XalanDOM/XalanDOMString.hpp> 00068 00069 00070 00071 #include <XPath/XPathException.hpp> 00072 00073 00074 00075 class MutableNodeRefList; 00076 class NodeRefListBase; 00077 class ResultTreeFragBase; 00078 class XObjectTypeCallback; 00079 class XPathExecutionContext; 00080 00081 00082 00086 class XALAN_XPATH_EXPORT XObject 00087 { 00088 public: 00089 00093 enum eObjectType { eTypeNull = 0, 00094 eTypeUnknown = 1, 00095 eTypeBoolean = 2, 00096 eTypeNumber = 3, 00097 eTypeString = 4, 00098 eTypeNodeSet = 5, 00099 eTypeResultTreeFrag = 6, 00100 eTypeUserDefined = 7, 00101 eUnknown 00102 }; 00103 00109 XObject(eObjectType theObjectType); 00110 00111 XObject(const XObject& source); 00112 00119 virtual XObject* 00120 clone(void* theAddress = 0) const = 0; 00121 00128 virtual XalanDOMString 00129 getTypeString() const = 0; 00130 00136 virtual double 00137 num() const; 00138 00144 virtual bool 00145 boolean() const; 00146 00152 virtual const XalanDOMString& 00153 str() const; 00154 00161 virtual const ResultTreeFragBase& 00162 rtree(XPathExecutionContext& executionContext) const; 00163 00169 virtual const NodeRefListBase& 00170 nodeset() const; 00171 00177 virtual void 00178 ProcessXObjectTypeCallback(XObjectTypeCallback& theCallbackObject) = 0; 00179 00185 virtual void 00186 ProcessXObjectTypeCallback(XObjectTypeCallback& theCallbackObject) const = 0; 00187 00195 bool 00196 equals(const XObject& theRHS) const; 00197 00205 bool 00206 notEquals(const XObject& theRHS) const; 00207 00214 bool 00215 lessThan(const XObject& theRHS) const; 00216 00224 bool 00225 lessThanOrEqual(const XObject& theRHS) const; 00226 00233 bool 00234 greaterThan(const XObject& theRHS) const; 00235 00243 bool 00244 greaterThanOrEqual(const XObject& theRHS) const; 00245 00251 eObjectType 00252 getType() const 00253 { 00254 return m_objectType; 00255 } 00256 00257 // All XObject instances are controlled by an instance of an XObjectFactory. 00258 friend class XObjectFactory; 00259 00260 // Base class for all XObject exceptions... 00261 class XObjectException : public XPathException 00262 { 00263 public: 00264 00265 explicit 00266 XObjectException( 00267 const XalanDOMString& message = XalanDOMString(), 00268 const XalanNode* styleNode = 0); 00269 00270 virtual 00271 ~XObjectException(); 00272 }; 00273 00274 class XObjectInvalidCastException : public XObjectException 00275 { 00276 public: 00277 00278 explicit 00279 XObjectInvalidCastException( 00280 const XalanDOMString& fromType, 00281 const XalanDOMString& toType); 00282 00283 virtual 00284 ~XObjectInvalidCastException(); 00285 00286 const XalanDOMString& 00287 getFromType() const 00288 { 00289 return m_fromType; 00290 } 00291 00292 const XalanDOMString& 00293 getToType() const 00294 { 00295 return m_toType; 00296 } 00297 00298 private: 00299 00300 static const XalanDOMString 00301 formatErrorString( 00302 const XalanDOMString& fromType, 00303 const XalanDOMString& toType); 00304 00305 const XalanDOMString m_fromType; 00306 00307 const XalanDOMString m_toType; 00308 }; 00309 00310 protected: 00311 00312 virtual 00313 ~XObject(); 00314 00315 static const XalanDOMString s_nullString; 00316 00317 private: 00318 00319 // Not implemented... 00320 XObject& 00321 operator=(const XObject&); 00322 00323 const eObjectType m_objectType; 00324 }; 00325 00326 00327 00328 inline bool 00329 operator==( 00330 const XObject& theLHS, 00331 const XObject& theRHS) 00332 { 00333 return theLHS.equals(theRHS); 00334 } 00335 00336 00337 00338 inline bool 00339 operator!=( 00340 const XObject& theLHS, 00341 const XObject& theRHS) 00342 { 00343 return theLHS.notEquals(theRHS); 00344 } 00345 00346 00347 00348 inline bool 00349 operator<( 00350 const XObject& theLHS, 00351 const XObject& theRHS) 00352 { 00353 return theLHS.lessThan(theRHS); 00354 } 00355 00356 00357 00358 inline bool 00359 operator<=( 00360 const XObject& theLHS, 00361 const XObject& theRHS) 00362 { 00363 return theLHS.lessThanOrEqual(theRHS); 00364 } 00365 00366 00367 00368 inline bool 00369 operator>( 00370 const XObject& theLHS, 00371 const XObject& theRHS) 00372 { 00373 return theLHS.greaterThan(theRHS); 00374 } 00375 00376 00377 00378 inline bool 00379 operator>=( 00380 const XObject& theLHS, 00381 const XObject& theRHS) 00382 { 00383 return theLHS.greaterThanOrEqual(theRHS); 00384 } 00385 00386 00387 00388 #endif // XOBJECT_HEADER_GUARD_1357924680
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