Putting It All Together
Example 15-1 puts all the concepts and short examples
we’ve seen in this chapter into one cohesive example.
Here’s the big picture: the TestStruct
program starts by cleaning up any rows left over from a prior
execution. Then it adds a person
and a
location
and ties them together with a
person_location
entry so that there are foreign
key constraints on the person
and
location
objects. Next, the program modifies the
person
object using both the
PreparedStatement
object’s
setObject( )
method and the
oracle.sql.REF
object’s setValue( )
method. Finally, the program selects the
person
object and displays its contents. Since the
person
object has a collection for identifiers,
the example exercises not only oracle.sql.STRUCT
,
but also oracle.sql.ARRAY
. Let’s continue by
examining the TestStruct
program in detail.
Example 15-1. Testing weakly typed JDBC object types
import java.io.*; import java.math.*; import java.sql.*; import java.text.*; public class TestStruct { Connection conn; public TestStruct( ) { try { DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver( )); conn = DriverManager.getConnection( "jdbc:oracle:thin:@dssw2k01:1521:orcl", "scott", "tiger"); } catch (SQLException e) { System.err.println(e.getMessage( )); e.printStackTrace( ); } } public static void main(String[] args) throws Exception { new TestStruct().process( ); } public void process( ) throws SQLException { // PERSON_TYP attributes final int PT_PERSON_ID = 0; final int PT_LAST_NAME ...
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