schemavalidator.hpp

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

/*
 * $Id: SchemaValidator.hpp 568078 2007-08-21 11:43:25Z amassari $
 */



#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);

    // -----------------------------------------------------------------------
    //  Particle Derivation Checking methods
    // -----------------------------------------------------------------------
    void checkParticleDerivation(SchemaGrammar* const currentGrammar,
                                 const ComplexTypeInfo* const typeInfo);
    void checkParticleDerivationOk(SchemaGrammar* const currentGrammar,
                                   ContentSpecNode* const curNode,
                                   const int derivedScope,
                                   ContentSpecNode* const baseNode,
                                   const int baseScope,
                                   const ComplexTypeInfo* const baseInfo = 0,
                                   const bool toCheckOccurrence = true);
    ContentSpecNode* checkForPointlessOccurrences(ContentSpecNode* const specNode,
                                                  const ContentSpecNode::NodeTypes nodeType,
                                                  ValueVectorOf<ContentSpecNode*>* const nodes);
    void gatherChildren(const ContentSpecNode::NodeTypes parentNodeType,
                        ContentSpecNode* const specNode,
                        ValueVectorOf<ContentSpecNode*>* const nodes);
    bool isOccurrenceRangeOK(const int min1, const int max1, const int min2, const int max2);
    void checkNSCompat(const ContentSpecNode* const derivedSpecNode,
                       const ContentSpecNode* const baseSpecNode,
                       const bool toCheckOccurence);
    bool wildcardEltAllowsNamespace(const ContentSpecNode* const baseSpecNode,
                                    const unsigned int derivedURI);
    void checkNameAndTypeOK(SchemaGrammar* const currentGrammar,
                            const ContentSpecNode* const derivedSpecNode,
                            const int derivedScope,
                            const ContentSpecNode* const baseSpecNode,
                            const int baseScope,
                            const ComplexTypeInfo* const baseInfo = 0);
    SchemaElementDecl* findElement(const int scope,
                                   const unsigned int uriIndex,
                                   const XMLCh* const name,
                                   SchemaGrammar* const grammar,
                                   const ComplexTypeInfo* const typeInfo = 0);
    void checkICRestriction(const SchemaElementDecl* const derivedElemDecl,
                            const SchemaElementDecl* const baseElemDecl,
                            const XMLCh* const derivedElemName,
                            const XMLCh* const baseElemName);
    void checkTypesOK(const SchemaElementDecl* const derivedElemDecl,
                      const SchemaElementDecl* const baseElemDecl,
                      const XMLCh* const derivedElemName);
    void checkRecurseAsIfGroup(SchemaGrammar* const currentGrammar,
                               ContentSpecNode* const derivedSpecNode,
                               const int derivedScope,
                               const ContentSpecNode* const baseSpecNode,
                               const int baseScope,
                               ValueVectorOf<ContentSpecNode*>* const nodes,
                               const ComplexTypeInfo* const baseInfo);
    void checkRecurse(SchemaGrammar* const currentGrammar,
                      const ContentSpecNode* const derivedSpecNode,
                      const int derivedScope,
                      ValueVectorOf<ContentSpecNode*>* const derivedNodes,
                      const ContentSpecNode* const baseSpecNode,
                      const int baseScope,
                      ValueVectorOf<ContentSpecNode*>* const baseNodes,
                      const ComplexTypeInfo* const baseInfo,
                      const bool toLax = false);