Re: [castor-user] Castor - CDATA tags in Mapping XML

Chandrasekharan, Sarita Fri, 07 Jan 2005 07:38:38 -0800

Title: Message

Hi,

For the code below has anyone tried to replace the DocumentHandler (which has been deprecated) with ContentHandler? I get a SAX.Parser Error as mentioned below.

DocumentBuilderFactory mDocFact = DocumentBuilderFactory.newInstance();

DocumentBuilder mDocBuilder = mDocFact.newDocumentBuilder();

Document mDocument = mDocBuilder.newDocument();

// Load the Mapping XML

Mapping mMap = new Mapping();

mMap.loadMapping("ChartDataMapping.xml");

// Create output format

OutputFormat format = new OutputFormat(mDocument,"UTF-8", true);

// Define the names of the XML elements to put

String[] mCData = {"data"};

format.setCDataElements(mCData);

format.setNonEscapingElements(mCData);

// Create the serializer

Writer mWriter = new StringWriter();

XMLSerializer serializer = new XMLSerializer(mWriter, format);

ContentHandler handler = serializer.asContentHandler();

// Create the marshaller

Marshaller mMarshaller = new Marshaller(handler);

mMarshaller.setMapping(mMap);

mMarshaller.setSuppressXSIType(true);

mMarshaller.marshal(mChartDataInfo);

When I use ContentHandler, I get the following error:

#endElement: class

#endElement: mapping

org.xml.sax.SAXException: System property org.xml.sax.parser not specified

at org.xml.sax.helpers.ParserAdapter.<init>(Unknown Source)

at org.exolab.castor.xml.Marshaller.<init>(Marshaller.java:334)

at ChartDataXML.main(ChartDataXML.java:92)

I have read that it can be done by setting JAVA_OPTS in the system properties. But, is there a way to fix it through code?

Thanks,

Sarita

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Tuesday, January 04, 2005 10:43 AM
To: Chandrasekharan, Sarita
Cc: [email protected]
Subject: RE: [castor-user] Castor - CDATA tags in Mapping XML

Hi Sarita,

You can try this out....

// Get mapping
            Mapping mapping = new Mapping();

         // The file containing the mapping here ex. test
            mapping.loadMapping(test);

         // Create output format
            OutputFormat format = new OutputFormat(Method.XML, "UTF-8", true);

         // Define the names of the XML elements to put

            String[] cdata = {"fragment"};
            format.setCDataElements(cdata);
            format.setNonEscapingElements(cdata);

         // Create the serializer
            XMLSerializer serializer = new XMLSerializer(writer, format);

         // Create the document handler
            DocumentHandler handler = serializer.asDocumentHandler();

         // Create the marshaller
            Marshaller marshaller = new Marshaller(handler);
            marshaller.setMapping(mapping);

         // Do it!
            marshaller.marshal(object); // The object you wanna marshal

Here you need to modify the mapping file also it would be like...

<bind-xml name="fragment" node="element" location="chart/chart_html_fragments"/>

</field>

<bind-xml name="appearance_name" node="attribute" location="chart/chart_html_fragments/fragment"/>

</field>

<bind-xml name="is_currently_selected" node="attribute" location="chart/chart_html_fragments/fragment"/>

</field>

<bind-xml name="link_name" node="attribute" location="chart/chart_html_fragments/fragment"/>

</field>

Thanks,

Snehal

-----Original Message-----
From: Chandrasekharan, Sarita [mailto:[EMAIL PROTECTED]
Sent: Tuesday, January 04, 2005 8:13 PM
To: [email protected]
Subject: [castor-user] Castor - CDATA tags in Mapping XML

Hi,

I have a class which has four attributes in it as follows. I want the last attribute cData which is a string to be embedded within CDATA tags . How do I do this in the Mapping XML which the Marshall process uses? I have sent the java class which is the object, the class which sets the value for the object, the mapping XML and the output expected. In my example I get the cData attribute wrapped around element CDATA, but I want it the actual CDATA tags around the string . Any help is appreciated.

public class ChartDataInfo

{

    //attributes

    protected String appearanceName;

    protected String linkName;

    protected boolean isCurrentlySelected;

    protected String cData;

     /** Creates a new instance of ChartDataInfo */

    public ChartDataInfo() {

    }

    public String getAppearanceName() { return appearanceName; }

    public String getLinkName() { return linkName; }

    public boolean getIsCurrentlySelected() { return isCurrentlySelected; }

    public String getCData() { return cData; }

    public void setAppearanceName(String pValue) { appearanceName = pValue; }

    public void setLinkName(String pValue) { linkName = pValue; }

    public void setIsCurrentlySelected(boolean pValue) { isCurrentlySelected = pValue; }

    public void setCData(String pValue) { cData = pValue; }



}

        CLASS which sets the value for ChartDataInfo class

public class ChartDataXML

{

    public static void main(String[] argv) {



        // Create a new MetaDataInfo



        ChartDataInfo mChartDataInfo = new ChartDataInfo();

        mChartDataInfo.setAppearanceName("TFLINBAR");

        mChartDataInfo.setLinkName("Line-BAR");

        mChartDataInfo.setIsCurrentlySelected(true);

        mChartDataInfo.setCData("charthtml");



                     // write it out as XML

                String encoding = "ISO-8859-1";



            String mMapping = "ChartDataMapping.xml";



                StringBuffer mStrBuf = MarshalBean.generateBOXML(mMapping, mChartDataInfo);



            System.out.println(mStrBuf);

    }

}

Mapping FILE

<!DOCTYPE databases PUBLIC

"-//EXOLAB/Castor Mapping DTD Version 1.0//EN"

"http://castor.exolab.org/mapping.dtd">

<mapping>

<description>ChartData Mapping</description>

<class name="ChartDataInfo">

    <map-to xml="charts"/>

    <field name="appearanceName" >

      <bind-xml name="appearance_name" node="attribute" location="chart/chart_html_fragments/fragment"/>

    </field>

    <field name="isCurrentlySelected">

      <bind-xml name="is_currently_selected" node="attribute" location="chart/chart_html_fragments/fragment"/>

    </field>

    <field name="linkName">

      <bind-xml name="link_name" node="attribute" location="chart/chart_html_fragments/fragment"/>

    </field>

    <field name="cData">

      <bind-xml name="CData" node="element" location="chart/chart_html_fragments/fragment"/>

    </field>

</class>

</mapping>

        Expected output

<?xml version="1.0" encoding="UTF-8" ?>

- <charts>

- <chart>

- <chart_html_fragments>

- <fragment appearance_name="TFLINBAR" is_currently_selected="true" link_name="Line-BAR">

<![CDATA[charthtml]]>

</fragment>

</chart_html_fragments>

</chart>

</charts>

Thanks,

Sarita

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