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* This software consists of voluntary contributions made by many
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* originally based on software copyright (c) 1999, International
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This class is used along with XMLEntityResolver to resolve entities. * Instead of passing publicId and systemId on the resolveEntity call, * as is done with the SAX entity resolver, an object of type XMLResourceIdentifier * is passed. By calling the getResourceIdentifierType() method the user can * determine which data members are available for inspection:
* *ResourceIdentifierType | *Available Data Members | *
SchemaGrammar | *schemaLocation, nameSpace & baseURI (current document) | *
SchemaImport | *schemaLocation, nameSpace & baseURI (current document) | *
SchemaInclude | *schemaLocation & baseURI (current document) | *
SchemaRedefine | *schemaLocation & baseURI (current document) | *
ExternalEntity | *systemId, publicId & baseURI (some items may be NULL) | *
The following resolver would provide the application * with a special character stream for the entity with the system * identifier "http://www.myhost.com/today":
* ** #include* * @see SAXParser#setXMLEntityResolver * @see InputSource#InputSource */ class XMLUTIL_EXPORT XMLResourceIdentifier { public: enum ResourceIdentifierType { SchemaGrammar = 0, SchemaImport, SchemaInclude, SchemaRedefine , ExternalEntity, UnKnown = 255 //@{ }; /** @name Constructors and Destructor */ /** Constructor */ XMLResourceIdentifier(const ResourceIdentifierType resourceIdentitiferType , const XMLCh* const systemId , const XMLCh* const nameSpace = 0 , const XMLCh* const publicId = 0 , const XMLCh* const baseURI = 0); /** Destructor */ ~XMLResourceIdentifier() { } //@} // ----------------------------------------------------------------------- // Getter methods // ----------------------------------------------------------------------- ResourceIdentifierType getResourceIdentifierType() const; const XMLCh* getPublicId() const; const XMLCh* getSystemId() const; const XMLCh* getSchemaLocation() const; const XMLCh* getBaseURI() const; const XMLCh* getNameSpace() const; private : const ResourceIdentifierType fResourceIdentifierType; const XMLCh* fPublicId; const XMLCh* fSystemId; const XMLCh* fBaseURI; const XMLCh* fNameSpace; /* Unimplemented constructors and operators */ /* Copy constructor */ XMLResourceIdentifier(const XMLResourceIdentifier&); /* Assignment operator */ XMLResourceIdentifier& operator=(const XMLResourceIdentifier&); }; inline XMLResourceIdentifier::ResourceIdentifierType XMLResourceIdentifier::getResourceIdentifierType() const { return fResourceIdentifierType; } inline const XMLCh* XMLResourceIdentifier::getPublicId() const { return fPublicId; } inline const XMLCh* XMLResourceIdentifier::getSystemId() const { return fSystemId; } inline const XMLCh* XMLResourceIdentifier::getSchemaLocation() const { return fSystemId; } inline const XMLCh* XMLResourceIdentifier::getBaseURI() const { return fBaseURI; } inline const XMLCh* XMLResourceIdentifier::getNameSpace() const { return fNameSpace; } inline XMLResourceIdentifier::XMLResourceIdentifier(const ResourceIdentifierType resourceIdentifierType , const XMLCh* const systemId , const XMLCh* const nameSpace , const XMLCh* const publicId , const XMLCh* const baseURI ) : fResourceIdentifierType(resourceIdentifierType) , fPublicId(publicId) , fSystemId(systemId) , fBaseURI(baseURI) , fNameSpace(nameSpace) { } XERCES_CPP_NAMESPACE_END #endif* #include * * class MyResolver : public XMLEntityResolver { * public: * InputSource resolveEntity (XMLResourceIdentifier* xmlri); * ... * }; * * MyResolver::resolveEntity(XMLResourceIdentifier* xmlri) { * switch(xmlri->getResourceIdentifierType()) { * case XMLResourceIdentifier::SystemId: * if (XMLString::compareString(xmlri->getSystemId(), "http://www.myhost.com/today")) { * MyReader* reader = new MyReader(); * return new InputSource(reader); * } else { * return null; * } * break; * default: * return null; * } * }