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

I.2.3 Updating Data

The following example shows how the C++ .NET are used to update data.

Search Conditions

'Of the hotels in Sydney that have a vacancy on 2006/07/18, I want to update the information relating to Hotel 1.'

Perform a search using the date (2006/07/18) as the search condition, then update data whose name matches "Hotel 1".

An Example of Using the APIs

The following is a sample program using the C++ .NET.

#using <mscorlib.dll>
#using <system.dll>
#using <Fujitsu.Shunsaku.dll>

using namespace System;
using namespace Fujitsu::Shunsaku;

class SampleUpdate {
public:
  static void Main( String *args __gc[] ) {
    ShunService *service = 0;

    try {
      // Create ShunService
      service = new ShunService();

      // Connect Shunsaku by specifying the host name and port number
      service->Host = "DirSvr1";
      service->Port = 33101;
      service->Connect();

      // Create ShunSearchRequirement
      ShunSearchRequirement *req = new ShunSearchRequirement();

      // Set each type of search conditions
      req->QueryExpression = "/document/base/name == 'Hotel 1'";
      req->ReturnExpression = "/document/base/name/text()";
      req->ReplyNumber = 1;
      req->RequestCount = 30;

      // Specify the search condition and execute the search
      ShunResultSet *rs = service->Search( req );

      // Create ShunRecordCollection for updating data
      ShunRecordCollection *updateRecords = new ShunRecordCollection();

      // Obtain the records that correspond to the search conditions
      ShunRecordEnumerator *enumerator = rs->Records->GetEnumerator();
      while ( enumerator->MoveNext() ) {
        ShunRecord *record = enumerator->Current;
        if ( record->Data->Equals( "Hotel 1" ) ) {
          // Set the record ID and data to update for Hotel 1 information
          record->Data = String::Concat(
            S"<document>",
            S"    <base>",
            S"        <name>Hotel 1</name>",
            S"        <city>Sydney</city>",
            S"        <address>Bondi Beach</address>",
            S"        <detail>http://xxxxx.com.au</detail>",
            S"        <price>300</price>",
            S"    </base>",
            S"    <information>",
            S"        <date>2006/07/18</date>",
            S"    </information>",
            S"    <note>En-suite bathroom and toilet, two minutes' walk to train station XX</note>",
            S"</document>" );
          updateRecords->Add( record );
        }
      }

      // Update the data if the data was set successfully
      if ( updateRecords->Count > 0 ) {
        service->Update( updateRecords );
        Console::WriteLine( "Update complete" );
      }

      // Close the connection to Shunsaku
      service->Disconnect();

    }
    catch ( ShunContinuousException *e ) {
      // Processing to perform if ShunContinuousException occurs
      try {
        if( service != 0 && service->State == ShunConnectionState::Open ) {
          service->Disconnect();
        }
      }
      catch ( ShunException *ex ) {
        Console::WriteLine( "Error message : {0}", ex->Message );
      }
      Console::WriteLine( "Error message : {0}", e->Message );
    }
    catch ( ShunConnectionTerminatedException *e ) {
      // Processing to perform if ShunConnectionTerminatedException occurs
      Console::WriteLine( "Error message : {0}", e->Message );
    }
  }
};

int main() {
  return SampleUpdate::Main( Environment::GetCommandLineArgs() );
}

Execution Results

Update complete