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<TD>CLob (Character Large object)</TD>
<TD>SA_dtCLob</TD>
</TR></TABLE></P>
<P>The table below shows how SQLAPI++ data
types correspond with servers original data types:</P>
<P><EM>SA_dtLongBinary</EM> <= > LONG VARGRAPHIC<BR><EM>SA_dtLongChar</EM>
<= > LONG VARCHAR<BR
><EM>SA_dtBLob</EM> = >
BLOB<BR><EM>SA_dtCLob
</EM>=> CLOB, DBCLOB</EM></P>
<P>
For more details see <A href="../HowTo/blobs.html">How To - Working with Long or Lob(CLob, BLob) data</A></P>
<P> </P>
<H3><A
name="Returning output parameters">Returning output
parameters</A> </H3>
<P>
In <STRONG>DB2</STRONG>
output parameters are
available immediately after calling
<A
href="../OnLineDoc/Command_Execute.html">SACommand::Execute</A>
.</P>
<P>SQLAPI++ Library automatically creates
<A href="../OnLineDoc/Param.html" >SAParam</A>
object to represent function
return value. You can refer to this
<A href="../OnLineDoc/Param.html" >
SAParam</A>
object using SQLAPI++ predefined
name
<STRONG> "RETURN_VALUE"</STRONG>.</P>
<P>For more details see <A
href="../OnLineDoc/Command_Execute.html" >SACommand::Execute</A>,
<A href="../OnLineDoc/Param_Usage.html" >SAParam
object</A>, <A
href="../HowTo/return_param.html" >How To - Returning Output Parameters</A>.</P>
<P> </P>
<H3><A name="Cancelling queries">Cancelling
queries</A> </H3>
<P>Using <A href="../OnLineDoc/Command_Cancel.html" >SACommand::Cancel</A> method you
can cancel the following types of processing on a statement:</P>
<UL type=disc>
<LI>A function running asynchronously on
the statement.<BR>
<LI>A function running on the statement on
another thread. </LI></UL>
<p>SQLAPI++ calls <STRONG>SQLCancel</STRONG> function to cancel a query. To get more
details see <STRONG>SQLCancel</STRONG> function
description in <STRONG>DB2</STRONG>
documentation.</p>
<P>For more details see <A href="../OnLineDoc/Command_Cancel.html" >SACommand::Cancel</A>.</P>
<P> </P>
<H3><A
name="Connection and command options">Connection and command
options</A> </H3>
<P> There are no server specific
options for <STRONG>DB2</STRONG>
server. </P>
<P> </P>
<H3><A name="Getting native DB2 API">Getting
native DB2 API</A> </H3>
<P>You can call client specific API functions
which are not directly supported by SQLAPI++ Library. <A
href="../OnLineDoc/Connection_NativeAPI.html">SAConnection::NativeAPI</A>
method returns a pointer to the set of native API functions
available for <STRONG>DB2</STRONG>
. To use the database API directly you have to downcast
this <STRONG>saAPI</STRONG> pointer to the appropriate type and use its
implementation-specific members. The following table shows what type
cast you have to make and what additional header file you have to
include to work with <STRONG>DB2</STRONG>
API. </P>
<P>
<TABLE border=1 cellPadding=5 width=100%>
<TR bgColor=#000094>
<TD style="WIDTH: 300px" width=300>
<P><STRONG><FONT color=white face="">Type casting</FONT>
</STRONG></P></TD>
<TD>
<P><STRONG><FONT color=white face="">Additional
<BR>include
file</FONT> </STRONG></P></TD></TR>
<TR>
<TD>
<P>Cast the result to <STRONG
>class db2API</STRONG>:</P>
<P><FONT face=System>saAPI *pResult = con.NativeAPI();<BR>db2API *p_db2API = (db2API *)pResult;</FONT></P></TD>
<TD><STRONG>
<P><STRONG>#include
<db2API.h></STRONG></P> </STRONG></TD></TR>
</TABLE> </P>
<P>To get more information about DBMS API
functions see this DBMS specific documentation. </P>
<P>For more details see <A
href="../OnLineDoc/Connection_NativeAPI.html">SAConnection::NativeAPI</A>.</P>
<P> </P>
<H3><A
name="Getting native DB2 connection related handles">Getting native
DB2 connection related handles</A> </H3>
<P>You have to use native API handles when you
want to call specific <STRONG>DB2</STRONG>
API functions which are not directly
supported by the Library. API functions usually need to receive one
or more active handles as a parameter(s). <A
href="../OnLineDoc/Connection_NativeHandles.html">SAConnection::NativeHandles</A> method returns a pointer to
the set of native API <STRONG>connection
related</STRONG> handles. To use API handles directly you have to
downcast <STRONG>saConnectionHandles</STRONG> pointer to the appropriate type
and use its implementation-specific members. The following table
shows what type cast you have to make and what additional header
file you have to include to work with specific <STRONG>DB2</STRONG>
API. </P>
<p>
<table border=1 cellPadding=5 width=100%>
<TBODY>
<tr bgColor=#000094>
<td >
<P><STRONG><FONT color=white face="">Type casting</FONT> </STRONG></P></td>
</tr>
<TR>
<td>
<P><STRONG><FONT color=maroon
face="">Cast the result</FONT></STRONG> to <STRONG
>class
db2ConnectionHandles</STRONG>:</P><FONT face=System><FONT face=System>
<P><STRONG><FONT color=maroon face="">#include
<db2API.h></FONT> </STRONG></P>
<P>saConnectionHandles *pResult =
con.NativeHandles</FONT>();<BR>db2ConnectionHandles *p_db2CH
=<BR>
(db2ConnectionHandles *)pResult;</p>
<P><FONT
face="Times New Roman"><STRONG><FONT color=maroon
face="">Available handles:</FONT></STRONG></FONT>
</P>
<UL>
<LI><FONT face="Times New Roman">SQLHENV
m_hevn;</FONT>
<LI><FONT face="Times New Roman">SQLHDBC
m_hdbc;</FONT></LI></UL></FONT></td>
</tr>
</table></P>
<P>To get more information about DBMS API
functions and handles see this DBMS specific documentation.
</P>
<P>For more details see <A
href="../OnLineDoc/Connection_NativeHandles.html">SAConnection::NativeHandles</A>.</P>
<P> </P>
<H3><A
name="Getting native DB2 command related handles">Getting native DB2
command related handles</A> </H3>
<P>You have to use native API handles when you
want to call specific <STRONG>DB2</STRONG>
API functions which are not directly
supported by the Library. API functions usually need to receive one
or more active handles as a parameter(s). <A
href="../OnLineDoc/Command_NativeHandles.html">SACommand::NativeHandles</A> method returns a pointer to the
set of native API <STRONG>command
related</STRONG> handles. To use API handles directly you have to
downcast <STRONG>saCommandHandles</STRONG> pointer to the appropriate type and
use its implementation-specific members. The following table shows
what type cast you have to make and what additional header file you
have to include to work with specific <STRONG>DB2</STRONG>
API. </P>
<p>
<table border=1 cellPadding=5 width=100%>
<TBODY>
<tr bgColor=#000094>
<td >
<P><STRONG><FONT color=white face="">Type casting</FONT> </STRONG></P></td>
</tr>
<TR>
<td>
<P><STRONG><FONT color=maroon
face="">Cast the result</FONT></STRONG> to <STRONG
>class
db2CommandHandles</STRONG>:</P><FONT face=System><FONT face=System>
<P><STRONG><FONT color=maroon face="">#include
<db2API.h></FONT> </STRONG></P>
<P>saCommandHandles *pResult =
cmd.NativeHandles</FONT>();<BR>db2CommandHandles *p_db2CH
=<BR>
(db2CommandHandles *)pResult;</p>
<P><FONT
face="Times New Roman"><STRONG><FONT color=maroon
face="">Available handles:</FONT></STRONG></FONT>
</P>
<UL>
<LI><FONT face="Times New Roman"> SQLHSTMT
m_hstmt;</FONT></LI></UL></FONT></TD></TR></TBODY></TABLE></P>
<P>To get more information about DBMS API
functions and handles see this DBMS specific documentation.
</P>
<P>For more details see <A
href="../OnLineDoc/Command_NativeHandles.html">SACommand::NativeHandles</A>.</P>
<P> </P>
<H3><A name="Error handling">Error handling</H3></A>
<P>When an error occurs inside SQLAPI++ Library
it throws an exception of type <A href="../OnLineDoc/Exception.html" >SAException</A>. <A
href="../OnLineDoc/Exception_ErrPos.html">SAException::ErrPos</A>
method gets an error position in SQL statement. In
<STRONG>DB2</STRONG>
server <A
href="../OnLineDoc/Exception_ErrPos.html">SAException::ErrPos</A> method
returns -1 because <STRONG>DB2</STRONG>
does not support this function.</P>
<P>For more details see <A
href="../HowTo/errors.html">How To - Error handling</A>, <A
href="../OnLineDoc/Exception_Usage.html">SAException object</A>.</P>
<P> </P>
<H3><A
name="Special header files - Compile time">Special header files -
Compile time</A> </H3>
<P>The header files are in the <STRONG>include</STRONG> subdirectory of SQLAPI++
distributions:<BR><STRONG>#include <SQLAPI.h>
</STRONG>- main header, should be
used whenever SQLAPI++ is used.<BR><STRONG> #include <db2API.h>
</STRONG>-
<STRONG>DB2</STRONG> API, should be included if direct DB2 CLI calls are
required.</P>
<P>For more details see <A
href="../OnLineDoc/index.html#Instructions for Compiling and Linking Applications with SQLAPI++">Online Documentation - Instructions for
Compiling and Linking Applications with SQLAPI++</A> </P>
<P>
<BR></P>
<h3>Problems and Questions</h3>
<p>If you don't find the answer to you
questions or have some problems on using the Library, please, send
e-mail to <A href="mailto:howto@sqlapi.com">howto@sqlapi.com</A>. </p></TD>
<tr></tr></TBODY></TABLE></FONT>
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