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<title>OTL 4.0, Example 367 (Unicode CLOB Insert/Select and #define
OTL_UNICODE_STRING_TYPE)</title>
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<h1>OTL 4.0, Example 367 (Unicode CLOB Insert/Select and #define
OTL_UNICODE_STRING_TYPE)</h1>
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<h2>Source Code</h2>
<pre>#include <iostream><br>#include <string><br>using namespace std;<br><br>#include <stdio.h></pre>
<pre>#define OTL_DB2_CLI // Compile OTL 4.0/DB2-CLI<br>#define <a
href="otl3_compile.htm#OTL_UNICODE">OTL_UNICODE</a> // Enable Unicode OTL <br><br>#if defined(__GNUC__)<br><br>namespace std{<br> typedef unsigned short unicode_char;<br> typedef basic_string<unicode_char> unicode_string;<br>}<br><br>#define <a
href="otl3_compile.htm#OTL_UNICODE_CHAR_TYPE">OTL_UNICODE_CHAR_TYPE</a> unicode_char<br>#define <a
href="otl3_compile.htm#OTL_UNICODE_STRING_TYPE">OTL_UNICODE_STRING_TYPE</a> unicode_string<br><br>#else<br><br>#define <a
href="file:///D%7C/oscl/vc/doc/otl4/otl3_compile.htm#OTL_UNICODE_CHAR_TYPE">OTL_UNICODE_CHAR_TYPE</a> wchar_t<br>#define <a
href="otl3_compile.htm#OTL_UNICODE_STRING_TYPE">OTL_UNICODE_STRING_TYPE</a> wstring<br>#endif<br><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> db.<a
href="otl3_connect_class.htm#set_max_long_size">set_max_long_size</a>(5); // max size + 1 Unicode character for traling NULL<br> <a
href="otl3_stream_class.htm">otl_stream</a> o(1, // buffer size should be set to 1<br> "insert into test_tab values(:f1<int>,:f2<varchar_long>)",<br> db // connect object<br> );<br><br> OTL_UNICODE_CHAR_TYPE tmp[5];<br> OTL_UNICODE_STRING_TYPE tmp2;<br><br> for(int i=1;i<=100;++i){<br> o<<i;<br> tmp[0]=1111; // Unicode character (decimal code of 1111)<br> tmp[1]=2222; // Unicode character (decimal code of 2222)<br> tmp[2]=3333; // Unicode chracater (decimal code of 3333)<br> tmp[3]=4444; // Unicode chracater (decimal code of 4444)<br> tmp[4]=0; // Unicode null terminator <br> tmp2=tmp;<br> o<a
href="otl3_stream_class.htm#unicode_string_ll"><<</a>tmp2; <br> }<br><br>}<br><br>void select()<br>{ <br> db.<a
href="file:///D%7C/oscl/vc/doc/otl4/otl3_connect_class.htm#set_max_long_size">set_max_long_size</a>(5); // max size + 1 Unicode character for traling NULL<br> <a
href="otl3_stream_class.htm">otl_stream</a> i(50, // buffer size can be > 1<br> "select * from test_tab "<br> "where f1>=:f11<int> "<br> " and f1<=:f12<int>*2",<br> // SELECT statement<br> db // connect object<br> ); <br> // create select stream<br> <br> int f1;<br> OTL_UNICODE_STRING_TYPE f2;<br><br> i<<8<<8; // assigning :f11 = 8, f12 = 8<br> // SELECT automatically executes when all input variables are<br> // assigned. First portion of output rows is fetched to the buffer<br><br> while(!i.eof()){ // while not end-of-data<br> i>>f1;<br> i<a
href="otl3_stream_class.htm#unicode_string_gg">>></a>f2;<br> cout<<"f1="<<f1<<", f2=";<br> for(size_t j=0;j<f2.length();++j)<br> cout<<" "<<f2[j];<br> cout<<endl;<br> }<br><br> i<<4<<4; // assigning :f11 = 4, :f12 = 4<br> // SELECT automatically executes when all input variables are<br> // assigned. First portion of output rows is fetched to the buffer<br><br> while(!i.eof()){ // while not end-of-data<br> i>>f1>>f2;<br> cout<<"f1="<<f1<<", f2=";<br> for(size_t j=0;j<f2.length();++j)<br> cout<<" "<<f2[j];<br> cout<<endl;<br> }<br><br>}<br><br>int main()<br>{<br> <a
href="otl3_connect_class.htm">otl_connect::otl_initialize</a>(); // initialize the database API environment<br> try{<br><br> db.rlogon("scott/tiger@db2sql2"); // connect to the database<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> db.commit();<br> <a
href="otl3_const_sql.htm">otl_cursor::direct_exec<br></a> (<br> db,<br> "create table test_tab(f1 int, f2 clob(1000))"<br> ); // create table<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 the database<br><br> return 0;<br><br>}</pre>
<h2>
Output</h2>
<pre>f1=8, f2= 1111 2222 3333 4444<br>f1=9, f2= 1111 2222 3333 4444<br>f1=10, f2= 1111 2222 3333 4444<br>f1=11, f2= 1111 2222 3333 4444<br>f1=12, f2= 1111 2222 3333 4444<br>f1=13, f2= 1111 2222 3333 4444<br>f1=14, f2= 1111 2222 3333 4444<br>f1=15, f2= 1111 2222 3333 4444<br>f1=16, f2= 1111 2222 3333 4444<br>f1=4, f2= 1111 2222 3333 4444<br>f1=5, f2= 1111 2222 3333 4444<br>f1=6, f2= 1111 2222 3333 4444<br>f1=7, f2= 1111 2222 3333 4444<br>f1=8, f2= 1111 2222 3333 4444<br><br><hr
width="100%"></pre>
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