Collections in Java

Question

How to display data when the out parameter of a pl/sql program
is a collection.
This is what i am doing.
OracleCallableStatement ocstmt = (OracleCallableStatement)
conn.prepareCall("{call test1.get_data(?)}") ;
ocstmt.registerOutParameter(1,
OracleTypes.ARRAY, "CHANNELOBJ") ;
ocstmt.execute() ;
ARRAY array = ocstmt.getARRAY(1);
String str = array.getSQLTypeName();
String str1 = array.getBaseTypeName();
System.out.println(" Length of Array :"+array.length());
System.out.println(str);
System.out.println(str1);
Datum[] values = array.getOracleArray();
for (int i=0;i<values.length;i++)
ChannelObj obj = new ChannelObj();
obj.create(values, OracleTypes.ARRAY);
System.out.println(obj.channel);
System.out.println(obj.languageCode);
System.out.println(obj.profileCode);
System.out.println(obj.cssName);
System.out.println(obj.alwaysLink);
The above thing return null.
Where ChannelObj is a class and is as follows
import java.math.BigDecimal;
import java.sql.SQLException;
import oracle.jdbc.driver.OracleConnection;
import oracle.sql.*;
public class ChannelObj implements CustomDatum,
CustomDatumFactory
static final ChannelObj channelFactory = new ChannelObj(null,
null, null, null, null);
public static CustomDatumFactory getFactory()
return channelFactory;
public ChannelObj()
public ChannelObj(String channel, String languageCode, String
profileCode, String cssName, String alwaysLink)
this.channel = channel;
this.languageCode = languageCode;
this.profileCode = profileCode;
this.cssName = cssName;
this.alwaysLink = alwaysLink;
public ChannelObj(ChannelObj obj)
this.channel = obj.channel;
this.languageCode = obj.languageCode;
this.profileCode = obj.profileCode;
this.cssName = obj.cssName;
this.alwaysLink = obj.alwaysLink;
/* CustomDatum interface */
public Datum toDatum(OracleConnection c) throws SQLException
ArrayDescriptor sd =
ArrayDescriptor.createDescriptor("CHANNELOBJ", c);
Object [] attributes = { channel, languageCode, profileCode,
cssName, alwaysLink };
return new ARRAY(sd, c, attributes);
/* CustomDatumFactory interface */
public CustomDatum create(Datum d, int sqlType) throws
SQLException
if (d == null) return null;
System.out.println("3");
ChannelObj attributes = (ChannelObj)d.toJdbc();
System.out.println("4");
return attributes;
/* fields */
public String channel;
public String languageCode;
public String profileCode;
public String cssName;
public String alwaysLink;
Could anyone point out where am i going wrong or help me some
example of it.
Regards,
Mahesh.

Answer 1

Hi,
Try java.util.Vector
Evan