#include <iostream.h> #include <stdio.h>
#define OTL_ORA8 // Compile OTL 4.0/OCI8
//#define OTL_ORA8I // Compile OTL 4.0/OCI8i
//#define OTL_ORA9I // Compile OTL 4.0/OCI9i
#include <otlv4.h> // include the OTL 4.0 header file
otl_connect db; // connect object
void insert()
// insert rows into table
{
otl_stream o(50, // buffer size
"insert into test_tab values(:f1<int>,:f2<char[31]>)",
// SQL statement
db // connect object
);
char tmp[32];
for(int i=1;i<=100;++i){
sprintf(tmp,"Name%d",i);
o<<i<<tmp;
}
}
void select()
{
otl_stream i(1, // buffer size
"begin "
" my_pkg.my_proc(:f1<int,in>,:f2<int,in>, "
" :str1<char[100],out[200]>, "
// :str1 is an output PL/SQL table of strings parameter
" :cur1<refcur,out[50]>, "
" :cur2<refcur,out[50]>); "
// :cur1, :cur2 are a bind variable names, refcur -- their types,
// out -- output parameter, 50 -- the buffer size when this
// reference cursor will be attached to otl_refcur_stream
"end;", // PL/SQL block that calls a stored procedure
db // connect object
);
i.set_commit(0); // set stream "auto-commit" to OFF.
otl_cstr_tab<200,101> str1; // PL/SQL table of char[200][101]
float f1;
char f2[31];
otl_refcur_stream s1, s2; // reference cursor streams for reading rows.
i<<8<<4; // assigning :f1 = 8, :f2 = 4
i>>str1; // reading :str1 from the stream
i>>s1; // initializing the refeence cursor stream with the output
// reference cursor :cur1
i>>s2; // initializing the refeence cursor stream with the output
// reference cursor :cur2
cout<<"STR1_Len="<<str1.len()<<endl;
for(int j=0;j<str1.len();++j)
if(str1.is_null(j))
cout<<"STR1["<<j<<"]=NULL"<<endl;
else
cout<<"STR1["<<j<<"]="<<str1.v[j]<<endl;
cout<<"=====> Reading :cur1..."<<endl;
while(!s1.eof()){ // while not end-of-data
s1>>f1>>f2;
cout<<"f1="<<f1<<", f2="<<f2<<endl;
}
cout<<"=====> Reading :cur2..."<<endl;
while(!s2.eof()){ // while not end-of-data
s2>>f1>>f2;
cout<<"f1="<<f1<<", f2="<<f2<<endl;
}
s1.close(); // closing the reference cursor
s2.close(); // closing the reference cursor
}
int main()
{
otl_connect::otl_initialize(); // initialize OCI environment
try{
db.rlogon("scott/tiger"); // connect to Oracle
otl_cursor::direct_exec
(
db,
"drop table test_tab",
otl_exception::disabled // disable OTL exceptions
); // drop table
otl_cursor::direct_exec
(
db,
"create table test_tab(f1 number, f2 varchar2(30))"
); // create table
// create a PL/SQL package
otl_cursor::direct_exec
(db,
"CREATE OR REPLACE PACKAGE my_pkg IS "
" "
" TYPE my_cursor IS REF CURSOR; "
" TYPE my_tab IS TABLE OF VARCHAR2(100) "
" INDEX BY BINARY_INTEGER; "
" "
" PROCEDURE my_proc "
" (f1_in IN NUMBER, "
" f2_in IN NUMBER, "
" str1 OUT my_tab, "
" cur1 OUT my_cursor, "
" cur2 OUT my_cursor); "
" "
"END; "
);
otl_cursor::direct_exec
(db,
"CREATE OR REPLACE PACKAGE BODY my_pkg IS "
" "
" PROCEDURE my_proc "
" (f1_in IN NUMBER, "
" f2_in IN NUMBER, "
" str1 OUT my_tab, "
" cur1 OUT my_cursor, "
" cur2 OUT my_cursor) "
" IS "
" lv_cur1 my_cursor; "
" lv_cur2 my_cursor; "
" BEGIN "
" FOR i IN 1..4 LOOP "
" str1(i) := 'Line'||i; "
" END LOOP; "
" str1(5) := NULL; "
" OPEN lv_cur1 FOR "
" SELECT * FROM test_tab "
" WHERE f1>=f1_in "
" AND f1<=f1_in*2; "
" OPEN lv_cur2 FOR "
" SELECT * FROM test_tab "
" WHERE f1>=f2_in "
" AND f1<=f2_in*2; "
" cur1 := lv_cur1; "
" cur2 := lv_cur2; "
" END; "
" "
"END; "
);
insert(); // insert records into table
select(); // select records from table
}
catch(otl_exception& p){ // intercept OTL exceptions
cerr<<p.msg<<endl; // print out error message
cerr<<p.stm_text<<endl; // print out SQL that caused the error
cerr<<p.var_info<<endl; // print out the variable that caused the error
}
db.logoff(); // disconnect from Oracle
return 0;
}
STR1_Len=5 STR1[0]=Line1 STR1[1]=Line2 STR1[2]=Line3 STR1[3]=Line4 STR1[4]=NULL =====> Reading :cur1... f1=8, f2=Name8 f1=9, f2=Name9 f1=10, f2=Name10 f1=11, f2=Name11 f1=12, f2=Name12 f1=13, f2=Name13 f1=14, f2=Name14 f1=15, f2=Name15 f1=16, f2=Name16 =====> Reading :cur2... f1=4, f2=Name4 f1=5, f2=Name5 f1=6, f2=Name6 f1=7, f2=Name7 f1=8, f2=Name8
Copyright © 1996, 2001, Sergei Kuchin, email: [email protected], [email protected] .
Permission to use, copy, modify and redistribute this document for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies.