uniondatatypevalidator.cpp

来自「IBM的解析xml的工具Xerces的源代码」· C++ 代码 · 共 475 行 · 第 1/2 页

        XMLCh* key;
        XMLCh* value;
        RefHashTableOfEnumerator<KVStringPair> e(facets, false, manager);

        while (e.hasMoreElements())
        {
            KVStringPair pair = e.nextElement();
            key = pair.getKey();
            value = pair.getValue();

            if (XMLString::equals(key, SchemaSymbols::fgELT_PATTERN))
            {
                setPattern(value);
                if (getPattern())
                    setFacetsDefined(DatatypeValidator::FACET_PATTERN);
                // do not construct regex until needed
            }
            else
            {
                 ThrowXMLwithMemMgr1(InvalidDatatypeFacetException
                         , XMLExcepts::FACET_Invalid_Tag
                         , key
                         , manager);
            }
        }//while

        /***
           Schema constraint: Part I -- self checking
        ***/
        // Nil

        /***
           Schema constraint: Part II base vs derived checking
        ***/
        // check 4.3.5.c0 must: enumeration values from the value space of base
        if ( ((getFacetsDefined() & DatatypeValidator::FACET_ENUMERATION) != 0) &&
            (getEnumeration() !=0))
        {
            int i = 0;
            int enumLength = getEnumeration()->size();
            try
            {
                for ( ; i < enumLength; i++)
                {
                    // ask parent do a complete check
                    //
                    // enum need NOT be passed this->checkContent()
                    // since there are no other facets for Union, parent
                    // checking is good enough.
                    //
                    baseValidator->validate(getEnumeration()->elementAt(i), (ValidationContext*)0, manager);

                }
            }

            catch ( XMLException& )
            {
                ThrowXMLwithMemMgr1(InvalidDatatypeFacetException
                            , XMLExcepts::FACET_enum_base
                            , getEnumeration()->elementAt(i)
                            , manager);
            }
        }

    }// End of Facet setting

    /***
        Inherit facets from base.facets

        The reason of this inheriting (or copying values) is to ease
        schema constraint checking, so that we need NOT trace back to our
        very first base validator in the hierachy. Instead, we are pretty
        sure checking against immediate base validator is enough.
    ***/

    UnionDatatypeValidator *pBaseValidator = (UnionDatatypeValidator*) baseValidator;

    // inherit enumeration
    if (((pBaseValidator->getFacetsDefined() & DatatypeValidator::FACET_ENUMERATION) !=0) &&
        ((getFacetsDefined() & DatatypeValidator::FACET_ENUMERATION) == 0))
    {
        setEnumeration(pBaseValidator->getEnumeration(), true);
    }

}

//
// 1) the bottom level UnionDTV would check against
//        pattern and enumeration as well
// 2) each UnionDTV(s) above the bottom level UnionDTV and
//        below the native UnionDTV (the top level DTV)
//        would check against pattern only.
// 3) the natvie Union DTV (the top level DTV) would invoke
//        memberTypeValidator to validate
//
void UnionDatatypeValidator::checkContent(const XMLCh*             const content
                                        ,       ValidationContext* const context
                                        ,       bool                     asBase
                                        ,       MemoryManager*     const manager)
{

    DatatypeValidator* bv = getBaseValidator();
    if (bv)
        ((UnionDatatypeValidator*)bv)->checkContent(content, context, true, manager);
    else
    {   // 3) native union type
        // check content against each member type validator in Union
        // report an error only in case content is not valid against all member datatypes.
        //
        bool memTypeValid = false;
        for ( unsigned int i = 0; i < fMemberTypeValidators->size(); ++i )
        {
            if ( memTypeValid )
                break;

            try
            {
                fMemberTypeValidators->elementAt(i)->validate(content, context, manager);
                memTypeValid = true;
                
                //set the validator of the type actually used to validate the content
                DatatypeValidator *dtv = fMemberTypeValidators->elementAt(i);
                fValidatedDatatype = dtv;
                // context will be null during schema construction
                if(context)
                    context->setValidatingMemberType(dtv);
            }
            catch (XMLException&)
            {
                //absorbed
            }
        } // for

        if ( !memTypeValid )
        {
            ThrowXMLwithMemMgr1(InvalidDatatypeValueException
                    , XMLExcepts::VALUE_no_match_memberType
                    , content
                    , manager);
            //( "Content '"+content+"' does not match any union types" );
        }
    }

    // 1) and 2). we check pattern first
    if ( (getFacetsDefined() & DatatypeValidator::FACET_PATTERN ) != 0 )
    {
        // lazy construction
        if (getRegex() == 0)
        {
            try {
                setRegex(new (fMemoryManager) RegularExpression(getPattern(), SchemaSymbols::fgRegEx_XOption, fMemoryManager));            	
            }
            catch (XMLException &e)
            {
                ThrowXMLwithMemMgr1(InvalidDatatypeValueException, XMLExcepts::RethrowError, e.getMessage(), manager);
            }
        }

        if (getRegex()->matches(content, manager) == false)
        {
            ThrowXMLwithMemMgr2(InvalidDatatypeValueException
                    , XMLExcepts::VALUE_NotMatch_Pattern
                    , content
                    , getPattern()
                    , manager);
        }
    }

    // if this is a base validator, we only need to check pattern facet
    // all other facet were inherited by the derived type
    if (asBase)
        return;

    if ((getFacetsDefined() & DatatypeValidator::FACET_ENUMERATION) != 0 &&
        (getEnumeration() != 0))
    {

        // If the content match (compare equal) any enumeration with
        // any of the member types, it is considerd valid.
        //
        RefVectorOf<DatatypeValidator>* memberDTV = getMemberTypeValidators();
        RefArrayVectorOf<XMLCh>* tmpEnum = getEnumeration();
        unsigned int memberTypeNumber = memberDTV->size();
        unsigned int enumLength = tmpEnum->size();

        for ( unsigned int memberIndex = 0; memberIndex < memberTypeNumber; ++memberIndex)
        {
            for ( unsigned int enumIndex = 0; enumIndex < enumLength; ++enumIndex)
            {
                try
                {
                    if (memberDTV->elementAt(memberIndex)->compare(content, tmpEnum->elementAt(enumIndex), manager) == 0)
                        return;
                }
                catch (XMLException&)
                {
                    //absorbed
                }
            } // for enumIndex
        } // for memberIndex

        ThrowXMLwithMemMgr1(InvalidDatatypeValueException, XMLExcepts::VALUE_NotIn_Enumeration, content, manager);

    } // enumeration

}

//
//
//
int UnionDatatypeValidator::compare(const XMLCh* const lValue
                                  , const XMLCh* const rValue
                                  , MemoryManager* const manager)
{
    RefVectorOf<DatatypeValidator>* memberDTV = getMemberTypeValidators();
    unsigned int memberTypeNumber = memberDTV->size();

    for ( unsigned int memberIndex = 0; memberIndex < memberTypeNumber; ++memberIndex)
    {
        if (memberDTV->elementAt(memberIndex)->compare(lValue, rValue, manager) ==0)
            return  0;
    }

    //REVISIT: what does it mean for UNION1 to be <less than> or <greater than> UNION2 ?
    // As long as -1 or +1 indicates an unequality, return either of them is ok.
    return -1;
}

const RefArrayVectorOf<XMLCh>* UnionDatatypeValidator::getEnumString() const
{
	return getEnumeration();
}

/***
 * 2.5.1.3 Union datatypes
 *
 * The canonical-lexical-representation for a 穟nion