| ADO 2.5 Samples |  |
| ADO 2.5 Samples | |
This example demonstrates the Type property. It is a model of a utility for listing the names and types of a collection, like Properties, Fields, etc.
We do not need to open the Recordset to access its Properties collection; they come into existence when the Recordset object is instantiated. However, setting the CursorLocation property to adUseClient adds several dynamic properties to the Recordset object's Properties collection, making the example a little more interesting. For sake of illustration, we explicitly use the Item property to access each Property object.
// BegintTypePropertyJ
import com.ms.wfc.data.*;
import java.io.* ;
public class TypePropertyX
{
// The main entry point for the application.
public static void main (String[] args)
{
TypePropertyX();
System.exit(0);
}
// TypePropertyX function
static void TypePropertyX()
{
// Define ADO Objects.
Recordset rst = null;
AdoProperty prop = null;
// Declarations.
BufferedReader in =
new BufferedReader (new InputStreamReader(System.in));
String strCnn = "DSN='Pubs';Provider='MSDASQL';Integrated Security='SSPI';";
String strMsg;
int intIndex;
int intDisplaysize = 15;
try
{
rst = new Recordset();
rst.setCursorLocation(AdoEnums.CursorLocation.CLIENT);
for(intIndex = 0;
intIndex <= rst.getProperties().getCount() - 1;intIndex++)
{
prop = rst.getProperties().getItem(intIndex);
switch(prop.getType())
{
case AdoEnums.DataType.BIGINT :
strMsg = "adBigInt";
break;
case AdoEnums.DataType.BINARY :
strMsg = "adBinary";
break;
case AdoEnums.DataType.BOOLEAN :
strMsg = "adBoolean";
break;
case AdoEnums.DataType.BSTR :
strMsg = "adBSTR";
break;
case AdoEnums.DataType.CHAPTER :
strMsg = "adChapter";
break;
case AdoEnums.DataType.CHAR :
strMsg = "adChar";
break;
case AdoEnums.DataType.CURRENCY :
strMsg = "adCurrency";
break;
case AdoEnums.DataType.DATE :
strMsg = "adDate";
break;
case AdoEnums.DataType.DBDATE :
strMsg = "adDBDate";
break;
case AdoEnums.DataType.DBTIME :
strMsg = "adDBTime";
break;
case AdoEnums.DataType.DBTIMESTAMP :
strMsg = "adDBTimeStamp";
break;
case AdoEnums.DataType.DECIMAL :
strMsg = "adDecimal";
break;
case AdoEnums.DataType.DOUBLE :
strMsg = "adDouble";
break;
case AdoEnums.DataType.EMPTY :
strMsg = "adEmpty";
break;
case AdoEnums.DataType.ERROR :
strMsg = "adError";
break;
case AdoEnums.DataType.FILETIME :
strMsg = "adFileTime";
break;
case AdoEnums.DataType.GUID :
strMsg = "adGUID";
break;
case AdoEnums.DataType.IDISPATCH :
strMsg = "adIDispatch";
break;
case AdoEnums.DataType.INTEGER :
strMsg = "adInteger";
break;
case AdoEnums.DataType.IUNKNOWN :
strMsg = "adIUnknown";
break;
case AdoEnums.DataType.LONGVARBINARY :
strMsg = "adLongVarBinary";
break;
case AdoEnums.DataType.LONGVARCHAR :
strMsg = "adLongVarChar";
break;
case AdoEnums.DataType.LONGVARWCHAR :
strMsg = "adLongVarWChar";
break;
case AdoEnums.DataType.NUMERIC :
strMsg = "adNumeric";
break;
case AdoEnums.DataType.PROPVARIANT :
strMsg = "adPropVariant";
break;
case AdoEnums.DataType.SINGLE :
strMsg = "adSingle";
break;
case AdoEnums.DataType.SMALLINT :
strMsg = "adSmallInt";
break;
case AdoEnums.DataType.TINYINT :
strMsg = "adTinyInt";
break;
case AdoEnums.DataType.UNSIGNEDBIGINT :
strMsg = "adUnsignedBigInt";
break;
case AdoEnums.DataType.UNSIGNEDINT :
strMsg = "adUnsignedInt";
break;
case AdoEnums.DataType.UNSIGNEDSMALLINT :
strMsg = "adUnsignedSmallInt";
break;
case AdoEnums.DataType.UNSIGNEDTINYINT :
strMsg = "adUnsignedTinyInt";
break;
case AdoEnums.DataType.USERDEFINED :
strMsg = "adUserDefined";
break;
case AdoEnums.DataType.VARBINARY :
strMsg = "adVarBinary";
break;
case AdoEnums.DataType.VARCHAR :
strMsg = "adVarChar";
break;
case AdoEnums.DataType.VARIANT :
strMsg = "adVariant";
break;
case AdoEnums.DataType.VARNUMERIC :
strMsg = "adVarNumeric";
break;
case AdoEnums.DataType.VARWCHAR :
strMsg = "adVarWChar";
break;
case AdoEnums.DataType.WCHAR :
strMsg = "adWChar";
break;
default:
strMsg = "*UNKNOWN*";
break;
}
System.out.println("Property " +
Integer.toString(intIndex) +
" : " +
prop.getName() +
", Type = " +
strMsg);
if(intIndex % intDisplaysize == 0 && intIndex != 0)
{
System.out.println("\nPress <Enter> to continue..");
in.readLine();
}
}
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 (rst != null)
{
PrintProviderError(rst.getActiveConnection());
}
else
{
System.out.println("Exception: " + ae.getMessage());
}
}
// System read requires this catch.
catch( java.io.IOException je)
{
PrintIOError(je);
}
finally
{
// Cleanup objects before exit.
if (rst != null)
if (rst.getState() == 1)
rst.close();
}
}
// PrintProviderError Function
static void PrintProviderError(Connection cnn1)
{
// Print Provider Errors from Connection Object.
// ErrItem is an item object in the Connections 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("\t Source: " + je.getClass() + "\n");
System.out.println("\t Description: "+ je.getMessage() + "\n");
}
}
// EndTypePropertyJ
Property Object | Type Property