schemavalidator.hpp

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/*
 * Copyright 2001-2004 The Apache Software Foundation.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * $Log: SchemaValidator.hpp,v $
 * Revision 1.27  2004/09/08 13:56:57  peiyongz
 * Apache License Version 2.0
 *
 * Revision 1.26  2004/03/01 21:06:38  knoaman
 * Fix for UPA checking
 *
 * Revision 1.25  2004/01/29 11:52:31  cargilld
 * Code cleanup changes to get rid of various compiler diagnostic messages.
 *
 * Revision 1.24  2003/12/03 20:00:27  neilg
 * PSVI fix:  cannot allow validator to reset its element content buffer before exposing it to the application
 *
 * Revision 1.23  2003/11/28 21:18:32  knoaman
 * Make use of canonical representation in PSVIElement
 *
 * Revision 1.22  2003/11/27 22:52:37  knoaman
 * PSVIElement implementation
 *
 * Revision 1.21  2003/11/27 06:10:31  neilg
 * PSVIAttribute implementation
 *
 * Revision 1.20  2003/11/24 05:13:20  neilg
 * expose validator that actually validated attribute.  Clean up union handling
 *
 * Revision 1.19  2003/10/05 02:09:37  neilg
 * the validator now keeps track of the current complex and simple type (including if this is an xsi:type).  This allows both the validator and the scanner to know what the current type is, without the need to modify the element declaration each time an xsi:type is seen
 *
 * Revision 1.18  2003/08/14 03:01:04  knoaman
 * Code refactoring to improve performance of validation.
 *
 * Revision 1.17  2003/05/18 14:02:08  knoaman
 * Memory manager implementation: pass per instance manager.
 *
 * Revision 1.16  2003/05/16 21:43:21  knoaman
 * Memory manager implementation: Modify constructors to pass in the memory manager.
 *
 * Revision 1.15  2003/05/16 03:15:51  knoaman
 * Partial implementation of the configurable memory manager.
 *
 * Revision 1.14  2003/05/15 18:57:27  knoaman
 * Partial implementation of the configurable memory manager.
 *
 * Revision 1.13  2003/01/20 19:04:48  knoaman
 * Fix for particle derivation checking.
 *
 * Revision 1.12  2003/01/13 20:16:51  knoaman
 * [Bug 16024] SchemaSymbols.hpp conflicts C++ Builder 6 dir.h
 *
 * Revision 1.11  2003/01/09 22:34:54  tng
 * [Bug 14955] error validating parser.
 *
 * Revision 1.10  2002/11/07 21:57:37  tng
 * Fix the following Schema Test Failures:
 * 1. Typo when comparing miscFlags with FIXED
 * 2. If xsi:type is specified, need to validate using that xsitype validator even if the type was any
 * 3. Need to check ID/IDREFs for element value
 * 4. Need to duplicate attribute id for wildcard scenario.
 *
 * Revision 1.9  2002/11/04 14:49:42  tng
 * C++ Namespace Support.
 *
 * Revision 1.8  2002/09/04 18:17:41  tng
 * Do not set IDREF to used during prevalidation.
 *
 * Revision 1.7  2002/07/11 18:55:45  knoaman
 * Add a flag to the preContentValidation method to indicate whether to validate
 * default/fixed attributes or not.
 *
 * Revision 1.6  2002/06/17 18:09:29  tng
 * DOM L3: support "datatype-normalization"
 *
 * Revision 1.5  2002/05/22 20:54:14  knoaman
 * Prepare for DOM L3 :
 * - Make use of the XMLEntityHandler/XMLErrorReporter interfaces, instead of using
 * EntityHandler/ErrorHandler directly.
 * - Add 'AbstractDOMParser' class to provide common functionality for XercesDOMParser
 * and DOMBuilder.
 *
 * Revision 1.4  2002/04/19 13:33:23  knoaman
 * Fix for bug 8236.
 *
 * Revision 1.3  2002/04/01 15:47:06  knoaman
 * Move Element Consistency checking (ref to global declarations) to SchemaValidator.
 *
 * Revision 1.2  2002/03/25 20:25:32  knoaman
 * Move particle derivation checking from TraverseSchema to SchemaValidator.
 *
 * Revision 1.1.1.1  2002/02/01 22:22:47  peiyongz
 * sane_include
 *
 * Revision 1.8  2001/11/13 13:25:08  tng
 * Deprecate function XMLValidator::checkRootElement.
 *
 * Revision 1.7  2001/06/05 16:51:21  knoaman
 * Add 'const' to getGrammar - submitted by Peter A. Volchek.
 *
 * Revision 1.6  2001/05/11 15:17:48  tng
 * Schema: Nillable fixes.
 *
 * Revision 1.5  2001/05/11 13:27:37  tng
 * Copyright update.
 *
 * Revision 1.4  2001/05/03 20:34:45  tng
 * Schema: SchemaValidator update
 *
 * Revision 1.3  2001/04/19 18:17:40  tng
 * Schema: SchemaValidator update, and use QName in Content Model
 *
 * Revision 1.2  2001/03/30 16:35:20  tng
 * Schema: Whitespace normalization.
 *
 * Revision 1.1  2001/03/21 21:56:33  tng
 * Schema: Add Schema Grammar, Schema Validator, and split the DTDValidator into DTDValidator, DTDScanner, and DTDGrammar.
 *
 */



#if !defined(SCHEMAVALIDATOR_HPP)
#define SCHEMAVALIDATOR_HPP

#include <xercesc/framework/XMLValidator.hpp>
#include <xercesc/framework/XMLBuffer.hpp>
#include <xercesc/util/ValueStackOf.hpp>
#include <xercesc/validators/common/ContentSpecNode.hpp>
#include <xercesc/validators/schema/SchemaGrammar.hpp>
#include <xercesc/validators/schema/XSDErrorReporter.hpp>

XERCES_CPP_NAMESPACE_BEGIN

class GrammarResolver;
class DatatypeValidator;
class SchemaElementDecl;

//
//  This is a derivative of the abstract validator interface. This class
//  implements a validator that supports standard XML Schema semantics.
//  This class handles scanning the of the schema, and provides
//  the standard validation services against the Schema info it found.
//
class VALIDATORS_EXPORT SchemaValidator : public XMLValidator
{
public:
    // -----------------------------------------------------------------------
    //  Constructors and Destructor
    // -----------------------------------------------------------------------
    SchemaValidator
    (
          XMLErrorReporter* const errReporter = 0
          , MemoryManager* const  manager = XMLPlatformUtils::fgMemoryManager
    );
    virtual ~SchemaValidator();

    // -----------------------------------------------------------------------
    //  Implementation of the XMLValidator interface
    // -----------------------------------------------------------------------
    virtual int checkContent
    (
        XMLElementDecl* const   elemDecl
        , QName** const         children
        , const unsigned int    childCount
    );

    virtual void faultInAttr
    (
                XMLAttr&    toFill
        , const XMLAttDef&  attDef
    )   const;

    virtual void preContentValidation(bool reuseGrammar,
                                      bool validateDefAttr = false);

    virtual void postParseValidation();

    virtual void reset();

    virtual bool requiresNamespaces() const;

    virtual void validateAttrValue
    (
        const   XMLAttDef*                  attDef
        , const XMLCh* const                attrValue
        , bool                              preValidation = false
        , const XMLElementDecl*             elemDecl = 0
    );

    virtual void validateElement
    (
        const   XMLElementDecl*             elemDef
    );

    virtual Grammar* getGrammar() const;
    virtual void setGrammar(Grammar* aGrammar);

    // -----------------------------------------------------------------------
    //  Virtual DTD handler interface.
    // -----------------------------------------------------------------------
    virtual bool handlesDTD() const;

    // -----------------------------------------------------------------------
    //  Virtual Schema handler interface. handlesSchema() always return false.
    // -----------------------------------------------------------------------
    virtual bool handlesSchema() const;

    // -----------------------------------------------------------------------
    //  Schema Validator methods
    // -----------------------------------------------------------------------
    void normalizeWhiteSpace(DatatypeValidator* dV, const XMLCh* const value, XMLBuffer& toFill);

    // -----------------------------------------------------------------------
    //  Setter methods
    // -----------------------------------------------------------------------
    void setGrammarResolver(GrammarResolver* grammarResolver);

    void setXsiType(const XMLCh* const        prefix
      , const XMLCh* const        localPart
       , const unsigned int        uriId);

    void setNillable(bool isNil);
    void setErrorReporter(XMLErrorReporter* const errorReporter);
    void setExitOnFirstFatal(const bool newValue);
    void setDatatypeBuffer(const XMLCh* const value);
    void clearDatatypeBuffer();

    // -----------------------------------------------------------------------
    //  Getter methods
    // -----------------------------------------------------------------------
    ComplexTypeInfo* getCurrentTypeInfo() const;
    DatatypeValidator *getCurrentDatatypeValidator() const;
    DatatypeValidator *getMostRecentAttrValidator() const;
    bool getErrorOccurred() const;
    bool getIsElemSpecified() const;
    const XMLCh* getNormalizedValue() const;

private:
    // -----------------------------------------------------------------------
    //  Unimplemented constructors and operators
    // -----------------------------------------------------------------------
    SchemaValidator(const SchemaValidator&);
    SchemaValidator& operator=(const SchemaValidator&);

    // -----------------------------------------------------------------------
    //  Element Consitency Checking methods
    // -----------------------------------------------------------------------
    void checkRefElementConsistency(SchemaGrammar* const currentGrammar,
                                    const ComplexTypeInfo* const curTypeInfo,
                                    const XercesGroupInfo* const curGroup = 0);

    // -----------------------------------------------------------------------