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<title>OTL 4.0, Example 149 (otl_refcur_stream, stored procedure)</title>
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<h1>OTL 4.0, Example 149 (otl_refcur_stream, stored procedure)</h1>
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<h1>
Example 149 (otl_refcur_stream, stored procedure)</h1>
This example demonstrates a stored procedure, which has two input
parameters,
and on the output returns a string and a couple of reference cursors.
<h2>Source Code</h2>
<pre>#include <iostream><br>using namespace std;<br><br>#include <stdio.h></pre>
<pre>#define OTL_ORA8 // Compile OTL 4.0/OCI8<br>//#define OTL_ORA8I // Compile OTL 4.0/OCI8i<br>//#define OTL_ORA9I // Compile OTL 4.0/OCI9i<br>#include <otlv4.h> // include the OTL 4.0 header file<br><br><a
href="otl3_connect_class.htm">otl_connect</a> db; // connect object<br><br>void insert()<br>// insert rows into table<br>{ <br> <a
href="otl3_stream_class.htm">otl_stream</a> o(50, // buffer size<br> "insert into test_tab values(:f1<int>,:f2<char[31]>)", <br> // SQL statement<br> db // connect object<br> );<br> char tmp[32];<br><br> for(int i=1;i<=100;++i){<br> sprintf(tmp,"Name%d",i);<br> o<<i<<tmp;<br> }<br>}<br><br>void select()<br>{ <br> <a
href="otl3_stream_class.htm">otl_stream</a> i(1, // buffer size<br> "begin "<br> " my_pkg.my_proc(:f1<int,in>,:f2<int,in>, "<br> " :str1<char[100],out>, "<br> // :str1 is an output string parameter<br> " :cur1<refcur,out[50]>, "<br> " :cur2<refcur,out[50]>); "<br> // :cur1, :cur2 are a bind variable names, refcur -- their types, <br> // out -- output parameter, 50 -- the buffer size when this<br> // reference cursor will be attached to <a
href="otl4_refcur_stream.htm">otl_refcur_stream<br></a> "end;", // PL/SQL block that calls a stored procedure<br> db // connect object<br> ); <br><br> i.set_commit(0); // set stream "auto-commit" to OFF.</pre>
<pre> char str1[101]; <br> float f1;<br> char f2[31];<br> <a
href="otl4_refcur_stream.htm">otl_refcur_stream</a> s1, s2; // reference cursor streams for reading rows.<br><br> i<<8<<4; // assigning :f1 = 8, :f2 = 4<br> i>>str1; // reading :str1 from the stream<br> i<a
href="otl3_stream_class.htm#stream_read_refcur">>></a>s1; // initializing the refeence cursor stream with the output <br> // reference cursor :cur1<br> i<a
href="otl3_stream_class.htm#stream_read_refcur">>></a>s2; // initializing the refeence cursor stream with the output <br> // reference cursor :cur2<br><br> cout<<"STR1="<<str1<<endl;<br> cout<<"=====> Reading :cur1..."<<endl;<br> while(!s1.eof()){ // while not end-of-data<br> s1>>f1>>f2;<br> cout<<"f1="<<f1<<", f2="<<f2<<endl;<br> }<br><br> cout<<"=====> Reading :cur2..."<<endl;<br> while(!s2.eof()){ // while not end-of-data<br> s2>>f1>>f2;<br> cout<<"f1="<<f1<<", f2="<<f2<<endl;<br> }<br><br> s1.close(); // closing the reference cursor<br> s2.close(); // closing the reference cursor<br><br>}<br><br>int main()<br>{<br> <a
href="otl3_connect_class.htm">otl_connect::otl_initialize</a>(); // initialize OCI environment<br> try{<br><br> db.rlogon("scott/tiger"); // connect to Oracle<br><br> <a
href="otl3_const_sql.htm">otl_cursor::direct_exec<br></a> (<br> db,<br> "drop table test_tab",<br> otl_exception::disabled // disable OTL exceptions<br> ); // drop table<br><br> <a
href="otl3_const_sql.htm">otl_cursor::direct_exec<br></a> (<br> db,<br> "create table test_tab(f1 number, f2 varchar2(30))"<br> ); // create table<br><br> // create a PL/SQL package<br> <a
href="otl3_const_sql.htm">otl_cursor::direct_exec<br></a> (db,<br> "CREATE OR REPLACE PACKAGE my_pkg IS "<br> " "<br> " TYPE my_cursor IS REF CURSOR; "<br> " "<br> " PROCEDURE my_proc "<br> " (f1_in IN NUMBER, "<br> " f2_in IN NUMBER, "<br> " str1 OUT VARCHAR2, "<br> " cur1 OUT my_cursor, "<br> " cur2 OUT my_cursor); "<br> " "<br> "END; "<br> );<br><br> <a
href="otl3_const_sql.htm">otl_cursor::direct_exec<br></a> (db,<br> "CREATE OR REPLACE PACKAGE BODY my_pkg IS "<br> " "<br> " PROCEDURE my_proc "<br> " (f1_in IN NUMBER, "<br> " f2_in IN NUMBER, "<br> " str1 OUT VARCHAR2, "<br> " cur1 OUT my_cursor, "<br> " cur2 OUT my_cursor) "<br> " IS "<br> " lv_cur1 my_cursor; "<br> " lv_cur2 my_cursor; "<br> " BEGIN "<br> " OPEN lv_cur1 FOR "<br> " SELECT * FROM test_tab "<br> " WHERE f1>=f1_in "<br> " AND f1<=f1_in*2; "<br> " OPEN lv_cur2 FOR "<br> " SELECT * FROM test_tab "<br> " WHERE f1>=f2_in "<br> " AND f1<=f2_in*2; "<br> " str1 := 'Hello, world'; "<br> " cur1 := lv_cur1; "<br> " cur2 := lv_cur2; "<br> " END; "<br> " "<br> "END; "<br> );<br><br> insert(); // insert records into table<br> select(); // select records from table<br><br> }<br><br> catch(<a
href="otl3_exception_class.htm">otl_exception</a>& p){ // intercept OTL exceptions<br> cerr<<p.msg<<endl; // print out error message<br> cerr<<p.stm_text<<endl; // print out SQL that caused the error<br> cerr<<p.var_info<<endl; // print out the variable that caused the error<br> }<br><br> db.logoff(); // disconnect from Oracle<br><br> return 0;<br><br>}</pre>
<h2>
Output</h2>
<pre>STR1=Hello, world<br>=====> Reading :cur1...<br>f1=8, f2=Name8<br>f1=9, f2=Name9<br>f1=10, f2=Name10<br>f1=11, f2=Name11<br>f1=12, f2=Name12<br>f1=13, f2=Name13<br>f1=14, f2=Name14<br>f1=15, f2=Name15<br>f1=16, f2=Name16<br>=====> Reading :cur2...<br>f1=4, f2=Name4<br>f1=5, f2=Name5<br>f1=6, f2=Name6<br>f1=7, f2=Name7<br>f1=8, f2=Name8<br><br><br><hr
width="100%"></pre>
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