12 <concept id="GUID-5012D63B-4353-5616-BBFB-DB04DAF71679" xml:lang="en"><title>XmlExample:

    12 <concept id="GUID-5012D63B-4353-5616-BBFB-DB04DAF71679" xml:lang="en"><title>XmlExample: Using the XML framework to parse an XML file</title><prolog><metadata><keywords/></metadata></prolog><conbody>

    13 Using the XML framework to parse an XML file</title><prolog><metadata><keywords/></metadata></prolog><conbody>

    13 <section id="GUID-7860D226-83AD-501E-9431-6A61A9AC2996"><title>Download</title> <p>Click on the following link to download the example: <xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/zips/guid-3eef58b5-bcd4-4f1e-a864-71273651c3bb.zip" scope="external">XmlExample.zip</xref></p><p>Click:<xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/guid-3eef58b5-bcd4-4f1e-a864-71273651c3bb.html" scope="peer">browse</xref> to view the example code. </p> </section>

    14 <section id="GUID-7860D226-83AD-501E-9431-6A61A9AC2996"><title>Download</title> <p>Click

    14 <section id="GUID-8E9C9A4C-288F-4B0B-B880-853895EA252A"><title>Introduction</title> <p>This example application demonstrates

    15 on the following link to download the example: <xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/zips/guid-3eef58b5-bcd4-4f1e-a864-71273651c3bb.zip" scope="external">XmlExample.zip</xref></p><p>Click:<xref href="guid-6013a680-57f9-415b-8851-c4fa63356636/guid-3eef58b5-bcd4-4f1e-a864-71273651c3bb.html" scope="peer">browse</xref> to view the example code. </p> </section>

    15 the usage of the <xref href="GUID-5748D958-9480-3358-A399-6B92293B86D9.dita"><apiname>XML</apiname></xref> framework API to parse XML

    16 <section><title>Introduction</title> <p>This example application demonstrates

    16 and WBXML files. </p> <p>The overview contains the following sections: </p> <ul>

    17 the usage of the <xref href="GUID-5748D958-9480-3358-A399-6B92293B86D9.dita"><apiname>XML</apiname></xref> framework API to parse XML and WBXML

    18 files. </p> <p>The overview contains the following sections: </p> <ul>

    23 <section id="GUID-3A5027A1-BEE9-5EB4-8670-7E729CF9260F"><title>Description</title> <p>The

    21 <section id="GUID-3A5027A1-BEE9-5EB4-8670-7E729CF9260F"><title>Description</title> <p>The example application demonstrates, how to use the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita"><apiname>Xml</apiname></xref> framework to parse XML and WBXML files. It takes a

    24 example application demonstrates, how to use the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita"><apiname>Xml</apiname></xref> framework

    22 valid XML file with a DTD (Document Type Declaration) definining its

    25 to parse XML and WBXML files. It takes a valid XML file with a DTD (Document

    23 structure, and a WBXML (WAP Binary XML format) file as input. You

    26 Type Declaration) definining its structure, and a WBXML (WAP Binary XML format)

    24 can generate a WBXML file from an XML file using any freeware converters.

    27 file as input. You can generate a WBXML file from an XML file using any freeware

    25 The application's <filepath>bld.inf</filepath> file specifies the

    28 converters. The application's <filepath>bld.inf</filepath> file specifies

    26 target path to which all the three files (XML, DTD, WBXML) need to

    29 the target path to which all the three files (XML, DTD, WBXML) need to be

    27 be exported. </p> <p>The application implements all the pure virtual

    30 exported. </p> <p>The application implements all the pure virtual functions

    28 functions of the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-25E466A4-0578-3BED-A56D-4E0906313788"><apiname>Xml::MContentHandler</apiname></xref> class, which

    31 of the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-25E466A4-0578-3BED-A56D-4E0906313788"><apiname>Xml::MContentHandler</apiname></xref> class, which is a client interface

    29 is a client interface to the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita"><apiname>Xml</apiname></xref> framework. These

    32 to the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita"><apiname>Xml</apiname></xref> framework. These functions inform the client

    30 functions inform the client application about the XML element being

    33 application about the XML element being parsed, its content, parser errors

    31 parsed, its content, parser errors if any and so on. </p> <p>The XML

    34 if any and so on. </p> <p>The XML and WBXML files are parsed using an object

    32 and WBXML files are parsed using an object of the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE"><apiname>Xml::CParser</apiname></xref> class. The parser object is configured to report namespace mappings

    35 of the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE"><apiname>Xml::CParser</apiname></xref> class. The parser object is configured

    33 to the client application, using the function <xref href="GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE.dita#GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE/GUID-5F2688CC-16B3-3F0D-B6CA-CE59FE7939BD"><apiname>Xml::CParser::EnableFeature()</apiname></xref>. </p> <p>The application first opens a file session using <xref href="GUID-E263C747-946F-35AA-9F1D-41833BD350FC.dita"><apiname>RFs</apiname></xref> to read the XML and WBXML files. Then, the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-CC810749-2F0D-3CC0-911D-EE12BB934867"><apiname>Xml::ParseL()</apiname></xref> function is called to start parsing the files.

    36 to report namespace mappings to the client application, using the function <xref href="GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE.dita#GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE/GUID-5F2688CC-16B3-3F0D-B6CA-CE59FE7939BD"><apiname>Xml::CParser::EnableFeature()</apiname></xref>. </p> <p>The

    34 The application parses the XML file followed by the WBXML file. While

    37 application first opens a file session using <xref href="GUID-E263C747-946F-35AA-9F1D-41833BD350FC.dita"><apiname>RFs</apiname></xref> to read

    35 these files are being parsed, status messages are printed to the console

    38 the XML and WBXML files. Then, the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-CC810749-2F0D-3CC0-911D-EE12BB934867"><apiname>Xml::ParseL()</apiname></xref> function

    36 by the callback functions as and when they are invoked. </p> <p>For

    39 is called to start parsing the files. The application parses the XML file

    37 demonstration purposes, the XML file is parsed twice, once by the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE"><apiname>Xml::CParser</apiname></xref> object created using the MIME type and again

    40 followed by the WBXML file. While these files are being parsed, status messages

    38 by the <codeph>CParser</codeph> object created using match data criteria.

    41 are printed to the console by the callback functions as and when they are

    39 The match data criteria are specified using an object of the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-AEFF2DB4-FBC2-36EE-A4CE-7EBBD4AF004E"><apiname>Xml::CMatchData</apiname></xref> class, which is passed to the <xref href="GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE.dita#GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE/GUID-9E9D8DBA-A396-3F62-8B59-C4556FD5A80E"><apiname>Xml::CParser::NewLC()</apiname></xref> function while creating the parser

    42 invoked. </p> <p>For demonstration purposes, the XML file is parsed twice,

    40 object. This will return a <codeph>CParser</codeph> object that matches

    43 once by the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE"><apiname>Xml::CParser</apiname></xref> object created using the MIME

    41 the specified MIME type, variant and so on. </p> </section>

    44 type and again by the <codeph>CParser</codeph> object created using match

    42 <section id="GUID-5DFD0234-44CF-4252-A980-5B73AAA61E35"><title>Class

    45 data criteria. The match data criteria are specified using an object of the <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-AEFF2DB4-FBC2-36EE-A4CE-7EBBD4AF004E"><apiname>Xml::CMatchData</apiname></xref> class,

    43 summary</title><p> <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-25E466A4-0578-3BED-A56D-4E0906313788"><apiname>Xml::MContentHandler </apiname></xref><xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-88087934-B84B-39DD-907F-71328D684035"><apiname>Xml::RDocumentParameters </apiname></xref><xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-A8A238B9-48A5-3729-9BAE-0287EE6295FA"><apiname>Xml::RAttributeArray </apiname></xref><xref href="GUID-DEFFFAAD-662A-34E9-8955-759F37BDC9AB.dita#GUID-DEFFFAAD-662A-34E9-8955-759F37BDC9AB/GUID-9A8E865C-FDAC-3923-83A9-5A8680AEE1EE"><apiname>Xml::CParserXml::CMatchData </apiname></xref> </p></section>

    46 which is passed to the <xref href="GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE.dita#GUID-EE37CB28-DAB4-30A9-B46E-8AE4664B28DE/GUID-9E9D8DBA-A396-3F62-8B59-C4556FD5A80E"><apiname>Xml::CParser::NewLC()</apiname></xref> function while

    44 <section id="GUID-E9F975CA-A59F-5484-83FD-7F17F0A03807"><title>Build</title> <p>The Symbian platform build process describes how to build an

    47 creating the parser object. This will return a <codeph>CParser</codeph> object

    45 application. </p> <p>The <codeph>XmlExample</codeph> builds an executable called <filepath>xmlexample.exe</filepath> in

    48 that matches the specified MIME type, variant and so on. </p> </section>

    46 the standard location (<filepath>\epoc32\release\winscw\&lt;build_variant&gt;</filepath> for CodeWarrior). After launching the executable, depending on the

    49 <section id="GUID-5DFD0234-44CF-4252-A980-5B73AAA61E35"><title>Class summary</title><p> <xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-25E466A4-0578-3BED-A56D-4E0906313788"><apiname>Xml::MContentHandler </apiname></xref><xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-88087934-B84B-39DD-907F-71328D684035"><apiname>Xml::RDocumentParameters </apiname></xref><xref href="GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473.dita#GUID-54A442BD-FCF1-31D3-BEF7-598C1820F473/GUID-A8A238B9-48A5-3729-9BAE-0287EE6295FA"><apiname>Xml::RAttributeArray </apiname></xref><xref href="GUID-DEFFFAAD-662A-34E9-8955-759F37BDC9AB.dita#GUID-DEFFFAAD-662A-34E9-8955-759F37BDC9AB/GUID-9A8E865C-FDAC-3923-83A9-5A8680AEE1EE"><apiname>Xml::CParserXml::CMatchData </apiname></xref> </p></section>

    47 emulator you are using, you may need to task away from the application

    50 <section id="GUID-E9F975CA-A59F-5484-83FD-7F17F0A03807"><title>Build</title> <p>The <xref href="GUID-3100800B-B2F7-50EF-BD4C-3C345ECCB2A5.dita">Symbian platform build process</xref> describes

    48 launcher/shell screen to view the console. </p> </section>

    51 how to build an application. </p> <p>The <codeph>XmlExample</codeph> builds

    52 an executable called <filepath>xmlexample.exe</filepath> in the standard location

    53 (<filepath>\epoc32\release\winscw\&lt;build_variant&gt;</filepath> for CodeWarrior).

    54 After launching the executable, depending on the emulator you are using, you

    55 may need to task away from the application launcher/shell screen to view the

    56 console. </p> </section>