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problem with Oracle object type [message #399597] Thu, 23 April 2009 02:09
maciego
Messages: 11
Registered: January 2009
Junior Member
Hi,

I want to pass Java object into Oracle object type. Problem is with String attributes. They are set to null values on Oracle database with iso-8859-2 encoding (with WE8MSWIN1252 encoding everything works ok).

My sample code:

public class Person implements SQLData, Serializable
{
private String name;
private String street;
private BigDecimal no;
private String sql_type;

public String getSQLTypeName() throws SQLException
{
return getSql_type();
}

public void readSQL( SQLInput stream, String typeName ) throws SQLException
{
setSql_type( typeName );

this.setName( stream.readString() );
this.setStreet( stream.readString() );
this.setNo( stream.readBigDecimal() );
}

public void writeSQL( SQLOutput stream ) throws SQLException
{
stream.writeString( getName() );
stream.writeString( getStreet());
stream.writeBigDecimal( getNo());
}

//getters and setters
}

public class Main
{
public static void main( String args[] ) throws Exception
{
DriverManager.registerDriver( new oracle.jdbc.driver.OracleDriver() );

Connection conn = DriverManager.getConnection( url + login + password);

Statement stmt = conn.createStatement();

try
{
stmt.execute( "drop table people" );
stmt.execute( "drop type PERSON FORCE" );
}
catch( SQLException e )
{
}

stmt.execute( "create type PERSON as object (name VARCHAR (30), street VARCHAR (30), num NUMBER)" );
stmt.execute( "create table people (empno NUMBER, empid PERSON)" );

ResultSet rs = stmt.executeQuery( "select * from people" );
rs.close();

Hashtable map = new Hashtable();

try
{
map.put( "PERSON", Class.forName( "objecttype.Person" ) );
}
catch( ClassNotFoundException ex )
{
}
conn.setTypeMap( map );

Person new_person = new Person();
new_person.setName( "name" );
new_person.setStreet( "street" );
new_person.setNo( new BigDecimal( 5 ) );
new_person.setSql_type( "PERSON" );

PreparedStatement ps = conn.prepareStatement( "insert into people values (?,?)" );
ps.setInt( 1, 102 );
ps.setObject( 2, new_person );

ps.execute();
ps.close();

rs = stmt.executeQuery( "select * from people" );
System.out.println();
System.out.println( " a new row has been added to the people table" );
System.out.println();

rs.close();
stmt.close();
conn.close();
}

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