External Procedure Call: Temporary Blob Array out.

Question

Hello,
I am having difficulty getting out an array of blob from the external procedure call interface. I am trying to create an array of blob initialized with temporary blobs. I was successfully able to create single blob parameter out but no success with the array type.
I am including the code for PLSQL wrapper, test code, and the main C code.
I appreciate your help.
The error message of the test run:
0
10
DECLARE
ERROR at line 1:
ORA-22275: invalid LOB locator specified
ORA-06512: at "SYS.DBMS_LOB", line 554
ORA-06512: at line 7
CREATE OR REPLACE PROCEDURE blob_coll (
cintarray IN OUT VDC_BLOB_ARRAY ) IS
LANGUAGE C
NAME "blob_coll"
LIBRARY sjc_lib WITH CONTEXT
PARAMETERS (
context,
cintarray OCIColl);
DECLARE
BLOBARRAY VDC_BLOB_ARRAY:= VDC_BLOB_ARRAY();
BEGIN
dbms_output.put_line( BLOBARRAY.count);
SCOTT.BLOB_COLL ( BLOBARRAY );
dbms_output.put_line( BLOBARRAY.count);
dbms_output.put_line( dbms_lob.getlength( BLOBARRAY(1)));
END;
void blob_coll( OCIExtProcContext *ctx,
OCIColl **cintarray )
sword status;
int i;
OCILobLocator *lobp[10];
status = OCIExtProcGetEnv( (OCIExtProcContext *)ctx, (OCIEnv **)&envhp,
(OCISvcCtx **)&svchp, (OCIError **)&errhp );
for (i=0; i < 10; i++)
status=OCIDescriptorAlloc( (dvoid *)envhp, (dvoid **) &lobp,
(ub4)OCI_DTYPE_LOB, (size_t)0, (dvoid**)0);
status=OCILobCreateTemporary((dvoid *)svchp,
(dvoid *)envhp,
lobp[i], (ub2)0, SQLCS_IMPLICIT,
OCI_TEMP_BLOB, OCI_ATTR_CACHE,
OCI_DURATION_SESSION);
status = OCICollAppend( (OCIEnv *)envhp,(OCIError *)errhp,
(CONST dvoid*) lobp[i],
(CONST dvoid*)0,
(OCIColl *)*cintarray);

Answer 1

The "X" in the second registerOutParameter is the type name which
you have created in oracle DB.
eg. if you have created a nested table
create Type integer_table is table of number(10);
then "X" = "INTEGER_TABLE" and it has to be in caps
and other thing to keep in mind is that it only works with nested
table or varray and not with pl/sql table.
Al Pivonka (guest) wrote:
: How can I pass pl/sql record in and out
: and pl/sql tables in out thru a pl/sql procedure using jdbc
with
: the zip file of 816classes12.zip...
: I have tried everything I know...
: I know the procedure is working, others are using it with in
: Oracle...
: I need to use the information it generates.
: here is what I have so far...
: try
: Class.forName ("oracle.jdbc.driver.OracleDriver");
: DriverManager.registerDriver (new
: oracle.jdbc.driver.OracleDriver());
: oracle.jdbc.driver.OracleConnection conn =
: (oracle.jdbc.driver.OracleConnection
: DriverManager.getConnection
("jdbc:oracle:thin:@--","NA","NA");
: // SQL92 SyntaxCallableStatement
: oracle.jdbc.driver.OracleCallableStatement cstmt =
: (oracle.jdbc.driver.OracleCallableStatement)conn.prepareCall
: ("{call cbmd_proposal_PKG.DefaultTerms (?,?,?,?)}" ) ;
: cstmt.setString(1,"5118");
: cstmt.setString(2,"3");
: cstmt.registerOutParameter
: (2,oracle.jdbc.driver.OracleTypes.NUMBER);
: cstmt.registerOutParameter
(1,oracle.jdbc.driver.OracleTypes.ARRAY,"X");
: cstmt.execute();
: catch(Exception e)
: System.err.println(e.toString());
: e.printStackTrace();
: The "X" in the second registerOutParameter is still unknown to
: me.
: The JavaDoc for the
OracleCallableStatement.registerOutParameter
: is not clear.
: Can any One help simplify this...
: Thanks
null