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< td align = "right" valign = "center" > < img src = "logo32.png" align = "right" width = "64" height = "32" border = "0" > < / td > < / tr > < / table > < h1 align = center > TQXmlEntityResolver Class Reference< br > < small > [< a href = "xml.html" > XML module< / a > ]< / small > < / h1 >
< p > The TQXmlEntityResolver class provides an interface to
resolve external entities contained in XML data.
< a href = "#details" > More...< / a >
< p > All the functions in this class are < a href = "threads.html#reentrant" > reentrant< / a > when TQt is built with thread support.< / p >
< p > < tt > #include < < a href = "qxml-h.html" > ntqxml.h< / a > > < / tt >
< p > Inherited by < a href = "qxmldefaulthandler.html" > TQXmlDefaultHandler< / a > .
< p > < a href = "qxmlentityresolver-members.html" > List of all member functions.< / a >
< h2 > Public Members< / h2 >
< ul >
< li class = fn > virtual bool < a href = "#resolveEntity" > < b > resolveEntity< / b > < / a > ( const TQString & publicId, const TQString & systemId, TQXmlInputSource *& ret ) = 0< / li >
< li class = fn > virtual TQString < a href = "#errorString" > < b > errorString< / b > < / a > () = 0< / li >
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< hr > < a name = "details" > < / a > < h2 > Detailed Description< / h2 >
The TQXmlEntityResolver class provides an interface to
resolve external entities contained in XML data.
< p >
< p > If an application needs to implement customized handling for
external entities, it must implement this interface, i.e.
< a href = "#resolveEntity" > resolveEntity< / a > (), and register it with
< a href = "qxmlreader.html#setEntityResolver" > TQXmlReader::setEntityResolver< / a > ().
< p > See also the < a href = "xml.html#sax2Intro" > Introduction to SAX2< / a > .
< p > < p > See also < a href = "qxmldtdhandler.html" > TQXmlDTDHandler< / a > , < a href = "qxmldeclhandler.html" > TQXmlDeclHandler< / a > , < a href = "qxmlcontenthandler.html" > TQXmlContentHandler< / a > , < a href = "qxmlerrorhandler.html" > TQXmlErrorHandler< / a > , < a href = "qxmllexicalhandler.html" > TQXmlLexicalHandler< / a > , and < a href = "xml-tools.html" > XML< / a > .
< hr > < h2 > Member Function Documentation< / h2 >
< h3 class = fn > < a href = "ntqstring.html" > TQString< / a > < a name = "errorString" > < / a > TQXmlEntityResolver::errorString ()< tt > [pure virtual]< / tt >
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< p > The reader calls this function to get an error string if any of
the handler functions returns FALSE.
< h3 class = fn > bool < a name = "resolveEntity" > < / a > TQXmlEntityResolver::resolveEntity ( const < a href = "ntqstring.html" > TQString< / a > & publicId, const < a href = "ntqstring.html" > TQString< / a > & systemId, < a href = "qxmlinputsource.html" > TQXmlInputSource< / a > *& ret )< tt > [pure virtual]< / tt >
< / h3 >
< p > The reader calls this function before it opens any external
entity, except the top-level document entity. The application may
request the reader to resolve the entity itself (< em > ret< / em > is 0) or
to use an entirely different input source (< em > ret< / em > points to the
input source).
< p > The reader deletes the input source < em > ret< / em > when it no longer needs
it, so you should allocate it on the heap with < tt > new< / tt > .
< p > The argument < em > publicId< / em > is the public identifier of the external
entity, < em > systemId< / em > is the system identifier of the external
entity and < em > ret< / em > is the return value of this function. If < em > ret< / em >
is 0 the reader should resolve the entity itself, if it is
non-zero it must point to an input source which the reader uses
instead.
< p > If this function returns FALSE the reader stops parsing and
reports an error. The reader uses the function < a href = "#errorString" > errorString< / a > () to
get the error message.
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