この例では、DataControl と DataSpace オブジェクトにある InternetTimeout プロパティの機能を示します。ここでは、DataControl オブジェクトの InternetTimeout プロパティを使って、タイムアウトを 20 秒に設定します。
// The WFC class includes the ADO objects.
import com.ms.wfc.data.*;
import com.ms.wfc.data.rds.*;
import java.io.* ;
public class InternetTimeoutX
{
// The main entry point for the application.
public static void main (String[] args)
{
InternetTimeoutX();
System.exit(0);
}
// InternetTimeoutX function
static void InternetTimeoutX()
{
// Define ADO Objects.
Recordset rstAuthors = null;
// Declarations.
BufferedReader in =
new BufferedReader (new InputStreamReader(System.in));
int intCount = 0;
int intDisplaysize = 15;
try
{
IBindMgr dc = (IBindMgr) new DataControl();
dc.setServer("http://tcsp636");
dc.setConnect("DSN=Pubs;UID=sa;PWD=;");
dc.setSQL("SELECT * FROM Authors");
dc.setInternetTimeout(20000); // Wait at least 20 seconds.
dc.Refresh();
rstAuthors = (Recordset)dc.getRecordset();
while(!rstAuthors.getEOF())
{
System.out.println(rstAuthors.getField
("au_fname").getString() + " " +
rstAuthors.getField("au_lname").getString());
intCount++;
if(intCount % intDisplaysize == 0)
{
System.out.println("\nPress <Enter> to continue..");
in.readLine();
intCount = 0;
}
rstAuthors.moveNext();
}
// Cleanup objects before exit.
rstAuthors.close();
System.out.println("\nPress <Enter> to continue..");
in.readLine();
}
catch( AdoException ae )
{
// Notify user of any errors that result from ADO.
// As passing a Recordset, check for null pointer first.
if (rstAuthors != null)
{
PrintProviderError(rstAuthors.getActiveConnection());
}
else
{
System.out.println("Exception: " + ae.getMessage());
}
}
// System read requires this catch.
catch( java.io.IOException je)
{
PrintIOError(je);
}
catch(java.lang.UnsatisfiedLinkError e)
{
System.out.println("Exception: " + e.getMessage());
}
catch(java.lang.NullPointerException ne)
{
System.out.println(
"Exception: Attempt to use null where an object is required.");
}
}
// PrintProviderError Function
static void PrintProviderError( Connection Cnn1 )
{
// Print Provider errors from Connection object.
// ErrItem is an item object in the Connection’s Errors collection.
com.ms.wfc.data.Error ErrItem = null;
long nCount = 0;
int i = 0;
nCount = Cnn1.getErrors().getCount();
// If there are any errors in the collection, print them.
if( nCount > 0);
{
// Collection ranges from 0 to nCount - 1
for (i = 0; i< nCount; i++)
{
ErrItem = Cnn1.getErrors().getItem(i);
System.out.println("\t Error number: " + ErrItem.getNumber()
+ "\t" + ErrItem.getDescription() );
}
}
}
// PrintIOError Function
static void PrintIOError( java.io.IOException je)
{
System.out.println("Error \n");
System.out.println("\tSource = " + je.getClass() + "\n");
System.out.println("\tDescription = " + je.getMessage() + "\n");
}
}