This question is related to my original issue How to return an array from Java to PL/SQL ?, but is a more specific.
I have been reading Oracle Database JDBC Developer's Guide and
but I still fail to write a minimum code where I can create ARRAY using
ARRAY array = oracle.jdbc.OracleConnection.createARRAY(sql_type_name, elements);
as instructed in Creating ARRAY objects.
I'm using Oracle Database JVM.
I have tried following:
Example 1
create or replace type widgets_t is table of varchar2(32767);
/
create or replace and compile java source named "so20j1" as
public class so20j1 {
public void f1() {
String[] elements = new String[]{"foo", "bar", "zoo"};
oracle.sql.ARRAY widgets =
oracle.jdbc.OracleConnection.createARRAY("widgets_t", elements);
}
};
/
show errors java source "so20j1"
Fails with:
Errors for JAVA SOURCE "so20j1":
LINE/COL ERROR
-------- -----------------------------------------------------------------
0/0 so20j1:4: non-static method
createARRAY(java.lang.String,java.lang.Object) cannot be
referenced from a static context
0/0 1 error
0/0 ^
0/0 oracle.sql.ARRAY widgets =
oracle.jdbc.OracleConnection.createARRAY("widgets_t", elements);
Example 2
create or replace type widgets_t is table of varchar2(32767);
/
create or replace and compile java source named "so20j2" as
public class so20j2 {
public void f1() {
String[] elements = new String[]{"foo", "bar", "zoo"};
oracle.jdbc.OracleDriver ora = new oracle.jdbc.OracleDriver();
java.sql.Connection conn = ora.defaultConnection();
oracle.sql.ARRAY widgets = conn.createARRAY("widgets_t", elements);
}
};
/
show errors java source "so20j2"
Fails with:
Errors for JAVA SOURCE "so20j2":
LINE/COL ERROR
-------- -----------------------------------------------------------------
0/0 so20j2:6: cannot find symbol
0/0 symbol : method createARRAY(java.lang.String,java.lang.String[])
0/0 1 error
0/0 oracle.sql.ARRAY widgets = conn.createARRAY("widgets_t",
elements);
0/0 ^
0/0 location: interface java.sql.Connection
Disclaimer: I'm not a Java programmer (yet).
You're on the right track with #2, but you can't create an oracle Array from a connection of type java.sql.Connection. It has to be an OracleConnection to be able to use those methods.
oracle.jdbc.OracleDriver ora = new oracle.jdbc.OracleDriver();
java.sql.Connection conn = ora.defaultConnection();
OracleConnection oraConn = conn.unwrap(OracleConnection.class);
oracle.sql.ARRAY widgets = oraConn.createARRAY("widgets_t", elements);