Accessing an Table in Java

Question

Hi,
I'm getting an error
"java.sql.SQLException: Invalid name pattern: SCOTT.Point"
when I try to access the values of an table with user defined types in a Java stored procedure with getArray().
Here's a more detailed description:
I have defined two "SQL types of language java".
The definition in SQL is:
TYPE Point AS OBJECT EXTERNAL NAME
objects.Point' LANGUAGE JAVA USING SQLDATA (
x FLOAT EXTERNAL NAME 'x',
y FLOAT EXTERNAL NAME 'y',
z FLOAT EXTERNAL NAME 'z');
TYPE Triangle AS OBJECT EXTERNAL NAME
'objects.Triangle' LANGUAGE JAVA USING SQLDATA (
A POINT EXTERNAL NAME 'a',
B POINT EXTERNAL NAME 'b',
C POINT EXTERNAL NAME 'c');
The equivalent java class for Point and Triangle can be found at the end of the posting.
After that I wanted to add a static java function to another class TEST. This function should have an array of triangles as input and should be able to access all the triangles.
Therefor I defined a SQL type for a table of triangles
TYPE mylist AS TABLE OF Triangle;
and a SQL type with the static function that corresponds to the java class TEST:
TYPE test AS OBJECT EXTERNAL NAME
'objects.Test' LANGUAGE JAVA USING SQLDATA (
STATIC FUNCTION testfunction(tri mylist) RETURN NUMBER
EXTERNAL NAME 'testfunction(oracle.sql.ARRAY) return int');
Now the most important - and probably wrong - code:
In the equivalent java class TEST I tried to access the array/table with the following function:
public static int testfunction(oracle.sql.ARRAY trilist) throws SQLException
int n = trilist.length(); // this works !!!!
ARRAY obs = trilist.getArray(); // this doesn't work !!!
Object[] obs = (Object[]) trilist.getArray(); // this doesn't work either
return n;
When I try to use this function in SQLplus, I get this error: "java.sql.SQLException: Invalid name pattern: SCOTT.Point" although I imported the java classes objects.Point and objects.Triangle.
It looks like that there is no problem with the class Triangle, but only with the class Point?!
I really tried a lot and search a lot in forums. But there are hardly any postings to this "server-side" problem, especially with tables of user-defined types. Most of the questions concern accessing data from client-side e.g. create a connection in the java programm and so on...
I would be very thankful to a small example how to be able to access the values of the triangle table or to get a good advice how to solve my problem.
Thanks to you all!
Java classes Point and Triangle:
package objects;
import java.sql.*;
public class Point implements java.sql.SQLData {
public double x;
public double y;
public double z;
public void readSQL(SQLInput in, String type) throws SQLException {
x = in.readDouble();
y = in.readDouble();
z = in.readDouble();
public void writeSQL(SQLOutput out) throws SQLException {
out.writeDouble(x);
out.writeDouble(y);
out.writeDouble(z);
public String getSQLTypeName() throws SQLException {
return "SCOTT.Point";
public Point(){ }
public Point(double x, double y, double z){
this.x = x;
this.y = y;
this.z = z;
package objects;
import java.sql.*;
import objects.*;
public class Triangle implements java.sql.SQLData {
public Point a;
public Point b;
public Point c;
public Vector normal;
public void readSQL(SQLInput in, String type) throws SQLException {
a = (Point) in.readObject();
b = (Point) in.readObject();
c = (Point) in.readObject();
public void writeSQL(SQLOutput out) throws SQLException {
out.writeObject(a);
out.writeObject(b);
out.writeObject(c);
public String getSQLTypeName() throws SQLException {
return "SCOTT.Triangle";
public Triangle(){ }
public Triangle(Point a, Point b, PointD c, Vector normal)
this.a = a;
this.b = b;
this.c = c;
this.normal = normal;
}

Answer 1

Hi Avi,
first of all many thanks to you!
Why did I start this thread here? Well, first of all, the problem described in this second posting is a little bit different, at least its context. So I chose another "subforum" than in the first posting. Additionally, as you see, there are different readers in the forums. I'm not sure whether I would have got this hint in Database/JVM, too.
But now to the main subject:
Your idea helped me indeed a little bit. I changed "SCOTT.Point" to "SCOTT.POINT" and "SCOTT.Triangle" to "SCOTT.TRIANGLE". Your proposition "SCOTT"."Point" didn't work since Ihave to return one single string.
The error montioned above in my first posting disappeared now, but I get the next error: java.lang.ClassCastException.
I tried all possible kinds of type cast:
public static int testfunction(oracle.sql.ARRAY trilist) throws SQLException
int n = trilist.length(); // this works !!!!
ARRAY obs = (ARRAY) trilist.getArray(); // this doesn't work !!!
Object[] obs = (Object[]) trilist.getArray(); // this doesn't work either
Triangle[] obs = (Triangle[]) trilist.getArray(); // this doesn't work either
return n;
Using "java.sql.Array" as input type and the method "java.sql.Array.getArray" leads to the same problems.
In many books expressions like in the code above are used for given resultSets. There, it works! :-(
Any ideas what could still be wrong?