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<title>OTL 4.0, Example 491 (UTF8, VARCHAR2 and otl_refcur_stream)</title>
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<h1>OTL 4.0, Example 491 (UTF8, VARCHAR2, and otl_refcur_stream)</h1>
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<h2>Source Code</h2>
<pre>#include <iostream><br>using namespace std;<br><br>#include <stdio.h></pre>
<pre>#define OTL_ORA9I // Compile OTL 4.0/OCI9i<br>#define <a
href="otl3_compile.htm#OTL_ORA_UTF8">OTL_ORA_UTF8</a> // Enable UTF8 OTL for OCI9i<br>#include <otlv4.h> // include the OTL 4.0 header file<br><br>// Sample UTF8 based string<br>unsigned char utf8_sample[]=<br>{0x61,0x62,0x63,0xd0,0x9e,0xd0,0x9b,0xd0,<br> 0xac,0xd0,0x93,0xd0,0x90,0x0};<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> unsigned char tmp[31];<br><br> for(int i=1;i<=100;++i){<br> strcpy(reinterpret_cast<char*>(tmp),reinterpret_cast<const char*>(utf8_sample));<br> o<<i;<br> o<<tmp; <br> }<br><br>}<br><br>void select()<br>{ <br> <a
href="otl3_stream_class.htm">otl_stream</a> i(1, // buffer size<br> "begin "<br> " open <b>:cur<refcur,out[50]> </b>for "<br> // :cur is a bind variable name, refcur -- its type, <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> " select * "<br> " from test_tab "<br> " where f1>=:f<int,in> and f1<=:f*2; "<br> "end;", // PL/SQL block returns a referenced cursor<br> db // connect object<br> ); <br> // create select stream with referenced cursor<br><br> i.set_commit(0); // set stream "auto-commit" to OFF.<br> <br> int f1;<br> unsigned char f2[31];<br><br> <a
href="otl4_refcur_stream.htm">otl_refcur_stream</a> s; // reference cursor stream for reading rows.<br><br> i<<8; // assigning :f = 8<br> i<a
href="otl3_stream_class.htm#stream_read_refcur">>></a>s; // initializing the refrence cursor stream with the output <br> // reference cursor.<br><br> while(!s.eof()){ // while not end-of-data<br> s>>f1;<br> s>>f2;<br> cout<<"f1="<<f1<<", f2=";<br> for(int j=0;f2[j]!=0;++j)<br> printf("%2x ", f2[j]);<br> cout<<endl;<br> }<br><br> s.close(); // closing the reference cursor<br><br> i<<4; // assigning :f = 4<br> i>>s;<br><br> while(!s.eof()){ // while not end-of-data<br> s>>f1;<br> s>>f2;<br> cout<<"f1="<<f1<<", f2=";<br> for(int j=0;f2[j]!=0;++j)<br> printf("%2x ", f2[j]);<br> cout<<endl;<br> }<br> // there is no need to explicitly calls s.close() since s's destructor <br> // will take care of closing the stream<br>}<br><br>int main()<br>{<br> putenv(const_cast<char*>("NLS_LANG=.AL32UTF8")); // set your Oracle Client NLS_LANG <br> // if its default was set to something else<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> 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>f1=8, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=9, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=10, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=11, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=12, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=13, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=14, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=15, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=16, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=4, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=5, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=6, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=7, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br>f1=8, f2=61 62 63 d0 9e d0 9b d0 ac d0 93 d0 90<br><br><hr
width="100%"></pre>
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