Interstage Shunsaku Data Manager Application Development Guide - Microsoft(R) Windows(R) 2000/ Microsoft(R) Windows Server(TM) 2003 - - UNIX -

12.6.3 Creation of XMLGenerator to Acquisition of XML Documents

The following example shows how the APIs are used, from the creation of XMLGenerator through to acquisition of XML documents.

• String
• Stream
• File
• DOM Tree
• SAX

String

The following example extracts and outputs XML documents in String format, after XMLGenerator has performed a conversion based on a ResultSet object that has been obtained from data stored in either a database or CSV file.

    XMLGenerator gen = null;
    GeneratorMap map = null;
    DocumentFountain df = null;
    try
    {
      gen = new XMLGenerator();
      map = new GeneratorMap("map01.xml");
      df = gen.createDocumentFountain( DocumentFountain.TYPE_STRING ,rs, map );
      df.setCode("SJIS");
    }
    catch(Exception e)
    {
      e.printStackTrace();
      return;
    }
    String ResultStr = null;
    try
    {
      while(df.hasXMLDocument())
      {
        ResultStr = (String)df.getXMLDocument();
        System.out.println("Result:"+ResultStr);
      }
      rs.close(); // If the input is from a database, connection release is also required.
    }
    catch(Exception e)
    {
      e.printStackTrace();
      return;
    }
}
}

Stream

The following example extracts and outputs XML documents in Stream format, after XMLGenerator has performed a conversion based on a ResultSet object that has been obtained from data stored in either a database or CSV file.

import java.io.File;
import java.io.FileOutputStream;
           :
    XMLGenerator gen = null;
    GeneratorMap map = null;
    DocumentFountain df = null;
    try
    {
      gen = new XMLGenerator();
      map = new GeneratorMap("map01.xml");
      df = gen.createDocumentFountain( DocumentFountain.TYPE_STREAM, rs, map );
      df.setCode("SJIS");
    }
    catch(Exception e)
    {
      e.printStackTrace();
      return;
    }
    FileOutputStream ResultStream = null;
    try
    {
      ResultStream = new FileOutputStream(new File("filename"));
      df.setDestination(ResultStream);
      while(df.hasXMLDocument())
      {
        df.getXMLDocument();
      }
      ResultStream.close();
      rs.close(); // If the input is from a database, connection release is also required.
    }
    catch(Exception e)
    {
      e.printStackTrace();
      return;
    }
  }
}

File

The following example extracts and outputs XML documents as a file after XMLGenerator has performed a conversion based on a ResultSet object that has been obtained from data stored in either a database or CSV file. One record is output to one file. Therefore, the name of the file for the output destination must be changed every time a new file is generated.

    XMLGenerator gen = null;
    GeneratorMap map = null;
    DocumentFountain df = null;
    try
    {
      gen = new XMLGenerator();
      map = new GeneratorMap("map01.xml");
      df = gen.createDocumentFountain( DocumentFountain.TYPE_FILE, rs, map );
      df.setCode("SJIS");
    }
    catch(Exception e)
    {
      e.printStackTrace();
      return;
    }
    try
    {
     int i = 1;
     while(df.hasXMLDocument())
     {
       df.setDestination("result" + i + ".xml");
       df.getXMLDocument();
       i++;
     }
     rs.close(); // If the input is from a database, connection release is also required.
    }
    catch(Exception e)
    {
      e.printStackTrace();
      return;
    }
  }
}

DOM Tree

The following example extracts XML documents as a DOM tree for use in an application, after XMLGenerator has performed a conversion based on a ResultSet object that has been obtained from data stored in either a database or CSV file.

import org.w3c.dom.Document;
           :
    XMLGenerator gen = null;
    GeneratorMap map = null;
    DocumentFountain df = null;
    try
    {
      gen = new XMLGenerator();
      map = new GeneratorMap("map01.xml");
      df = gen.createDocumentFountain( DocumentFountain.TYPE_DOM, rs, map );
      df.setCode("SJIS");
    }
    catch(Exception e)
    {
      e.printStackTrace();
      return;
    }
    Document docRoot = null;
    try
    {
      while(df.hasXMLDocument())
      {
        docRoot = (Document)df.getXMLDocument();
       // 
       // This section specifies application processing that uses docRoot received as a DOM tree.
      }
      rs.close(); // If the input is from a database, connection release is also required.
    }
    catch(Exception e)
    {
      e.printStackTrace();
      return;
    }
  }
}

SAX

The following example extracts XML documents as SAX for use in an application, after XMLGenerator has performed a conversion based on a ResultSet object that has been obtained from data stored in either a database or CSV file.

The user should set an instance of a class that implements the org.xml.sax.ContentHandler interface as the argument of the setDestination() method. In the following example, the SAXhandler class implements the org.xml.sax.ContentHandler interface separately.

import org.xml.sax.helpers.DefaultHandler;
           :
    XMLGenerator gen = null;
    GeneratorMap map = null;
    DocumentFountain df = null;
    try
    {
      gen = new XMLGenerator();
      map = new GeneratorMap("map01.xml");
      df = gen.createDocumentFountain( DocumentFountain.TYPE_SAX,rs, map );
      df.setCode("SJIS");
    }
    catch(Exception e)
    {
      e.printStackTrace();
      return;
    }
    try
    {
      while(df.hasXMLDocument())
      {
       // 
       // This section specifies application processing received as a SAX event.
        SAXhandler sh = new SAXhandler();
        df.setDestination(sh);
        df.getXMLDocument();
      }
      rs.close(); // If the input is from a database, connection release is also required.
    }
    catch(Exception e)
    {
      e.printStackTrace();
      return;
    }
  }
}

class SAXhandler extends DefaultHandler
{
   :
}