00001 /* 00002 * The Apache Software License, Version 1.1 00003 * 00004 * 00005 * Copyright (c) 1999-2002 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 <PlatformSupport/FormatterListener.hpp> 00072 #include <PlatformSupport/XalanReferenceCountedObject.hpp> 00073 00074 00075 00076 #include <XPath/XalanXPathException.hpp> 00077 00078 00079 00080 class MutableNodeRefList; 00081 class NodeRefListBase; 00082 class ResultTreeFragBase; 00083 class XObjectFactory; 00084 class XObjectTypeCallback; 00085 class XPathExecutionContext; 00086 00087 00088 00092 class XALAN_XPATH_EXPORT XObject : protected XalanReferenceCountedObject 00093 { 00094 public: 00095 00096 friend class XObjectPtr; 00097 00101 enum eObjectType { eTypeNull = 0, 00102 eTypeUnknown = 1, 00103 eTypeBoolean = 2, 00104 eTypeNumber = 3, 00105 eTypeString = 4, 00106 eTypeNodeSet = 5, 00107 eTypeResultTreeFrag = 6, 00108 eTypeUserDefined = 7, 00109 // These next types are implementation-specific, and 00110 // are never returned by getType(). 00111 eTypeStringReference = 8, 00112 eTypeStringAdapter = 9, 00113 eTypeStringCached = 10, 00114 eTypeXTokenNumberAdapter = 11, 00115 eTypeXTokenStringAdapter = 12, 00116 eUnknown 00117 }; 00118 00124 XObject(eObjectType theObjectType); 00125 00126 XObject(const XObject& source); 00127 00134 virtual XObject* 00135 clone(void* theAddress = 0) const = 0; 00136 00143 virtual XalanDOMString 00144 getTypeString() const = 0; 00145 00151 virtual double 00152 num() const; 00153 00159 virtual bool 00160 boolean() const; 00161 00167 virtual const XalanDOMString& 00168 str() const; 00169 00170 typedef void (FormatterListener::*MemberFunctionPtr)(const XMLCh* const, const unsigned int); 00171 00179 virtual void 00180 str( 00181 FormatterListener& formatterListener, 00182 MemberFunctionPtr function) const = 0; 00183 00189 virtual void 00190 str(XalanDOMString& theBuffer) const; 00191 00197 virtual const ResultTreeFragBase& 00198 rtree() const; 00199 00205 virtual const NodeRefListBase& 00206 nodeset() const; 00207 00213 virtual void 00214 ProcessXObjectTypeCallback(XObjectTypeCallback& theCallbackObject) = 0; 00215 00221 virtual void 00222 ProcessXObjectTypeCallback(XObjectTypeCallback& theCallbackObject) const = 0; 00223 00231 bool 00232 equals( 00233 const XObject& theRHS, 00234 XPathExecutionContext& executionContext) const; 00235 00243 bool 00244 notEquals( 00245 const XObject& theRHS, 00246 XPathExecutionContext& executionContext) const; 00247 00254 bool 00255 lessThan( 00256 const XObject& theRHS, 00257 XPathExecutionContext& executionContext) const; 00258 00266 bool 00267 lessThanOrEquals( 00268 const XObject& theRHS, 00269 XPathExecutionContext& executionContext) const; 00270 00277 bool 00278 greaterThan( 00279 const XObject& theRHS, 00280 XPathExecutionContext& executionContext) const; 00281 00289 bool 00290 greaterThanOrEquals( 00291 const XObject& theRHS, 00292 XPathExecutionContext& executionContext) const; 00293 00299 eObjectType 00300 getType() const 00301 { 00302 return m_objectType; 00303 } 00304 00305 // All XObject instances are controlled by an instance of an XObjectFactory. 00306 friend class XObjectFactory; 00307 00308 void 00309 setFactory(XObjectFactory* theFactory) 00310 { 00311 m_factory = theFactory; 00312 } 00313 00314 // Base class for all XObject exceptions... 00315 class XObjectException : public XalanXPathException 00316 { 00317 public: 00318 00319 explicit 00320 XObjectException( 00321 const XalanDOMString& message = XalanDOMString(), 00322 const XalanNode* styleNode = 0, 00323 const XalanDOMString& theType = XalanDOMString(XALAN_STATIC_UCODE_STRING("XObjectException"))); 00324 00325 virtual 00326 ~XObjectException(); 00327 }; 00328 00329 class XObjectInvalidConversionException : public XObjectException 00330 { 00331 public: 00332 00333 XObjectInvalidConversionException( 00334 const XalanDOMString& fromType, 00335 const XalanDOMString& toType); 00336 00337 virtual 00338 ~XObjectInvalidConversionException(); 00339 00340 const XalanDOMString& 00341 getFromType() const 00342 { 00343 return m_fromType; 00344 } 00345 00346 const XalanDOMString& 00347 getToType() const 00348 { 00349 return m_toType; 00350 } 00351 00352 private: 00353 00354 static const XalanDOMString 00355 formatErrorString( 00356 const XalanDOMString& fromType, 00357 const XalanDOMString& toType); 00358 00359 const XalanDOMString m_fromType; 00360 00361 const XalanDOMString m_toType; 00362 }; 00363 00364 protected: 00365 00371 virtual eObjectType 00372 getRealType() const; 00373 00374 virtual void 00375 referenced(); 00376 00377 virtual void 00378 dereferenced(); 00379 00380 virtual 00381 ~XObject(); 00382 00383 static const XalanDOMString s_nullString; 00384 00385 private: 00386 00387 // Not implemented... 00388 XObject& 00389 operator=(const XObject&); 00390 00391 const eObjectType m_objectType; 00392 00393 XObjectFactory* m_factory; 00394 }; 00395 00396 00397 00401 class XALAN_XPATH_EXPORT XObjectPtr 00402 { 00403 public: 00404 00405 friend bool operator==(const XObjectPtr&, const XObjectPtr&); 00406 friend bool operator<(const XObjectPtr&, const XObjectPtr&); 00407 00411 explicit 00412 XObjectPtr(XObject* theXObject = 0) : 00413 m_xobjectPtr(theXObject) 00414 { 00415 XalanReferenceCountedObject::addReference(theXObject); 00416 } 00417 00418 XObjectPtr(const XObjectPtr& theSource) : 00419 m_xobjectPtr(theSource.m_xobjectPtr) 00420 { 00421 XalanReferenceCountedObject::addReference(m_xobjectPtr); 00422 }; 00423 00424 XObjectPtr& 00425 operator=(const XObjectPtr& theRHS) 00426 { 00427 if (m_xobjectPtr != theRHS.m_xobjectPtr) 00428 { 00429 XalanReferenceCountedObject::removeReference(m_xobjectPtr); 00430 00431 m_xobjectPtr = theRHS.m_xobjectPtr; 00432 00433 XalanReferenceCountedObject::addReference(m_xobjectPtr); 00434 } 00435 00436 return *this; 00437 } 00438 00439 ~XObjectPtr() 00440 { 00441 XalanReferenceCountedObject::removeReference(m_xobjectPtr); 00442 }; 00443 00444 bool 00445 null() const 00446 { 00447 return m_xobjectPtr == 0 ? true : false; 00448 } 00449 00450 const XObject& 00451 operator*() const 00452 { 00453 return *m_xobjectPtr; 00454 }; 00455 00456 XObject& 00457 operator*() 00458 { 00459 return *m_xobjectPtr; 00460 }; 00461 00462 const XObject* 00463 operator->() const 00464 { 00465 return m_xobjectPtr; 00466 }; 00467 00468 XObject* 00469 operator->() 00470 { 00471 return m_xobjectPtr; 00472 }; 00473 00474 const XObject* 00475 get() const 00476 { 00477 return m_xobjectPtr; 00478 }; 00479 00480 XObject* 00481 get() 00482 { 00483 return m_xobjectPtr; 00484 }; 00485 00486 private: 00487 00488 XObject* m_xobjectPtr; 00489 }; 00490 00491 00492 00493 inline bool 00494 operator==( 00495 const XObjectPtr& theLHS, 00496 const XObjectPtr& theRHS) 00497 { 00498 return theLHS.m_xobjectPtr == theRHS.m_xobjectPtr; 00499 } 00500 00501 00502 00503 inline bool 00504 operator!=( 00505 const XObjectPtr& theLHS, 00506 const XObjectPtr& theRHS) 00507 { 00508 return !(theLHS == theRHS); 00509 } 00510 00511 00512 00513 inline bool 00514 operator<( 00515 const XObjectPtr& theLHS, 00516 const XObjectPtr& theRHS) 00517 { 00518 return theLHS.m_xobjectPtr < theRHS.m_xobjectPtr; 00519 } 00520 00521 00522 00523 #endif // XOBJECT_HEADER_GUARD_1357924680
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