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doc/Using_OO_API.html
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@ -22,7 +22,7 @@
on use of interfaces. That interfaces, though looking in some aspects
like OLE2 interfaces (some of them have addRef() and release()
methods) are non standard and have features, missing in ither widely
used types of interfaces. First of all firebird interfaces are
used types of interfaces. First of all Firebird interfaces are
</FONT><FONT SIZE=4><B>language independent</B></FONT><FONT SIZE=4> –
that means that to define/use them one need not use language specific
constructions like </FONT><FONT SIZE=4><I>class</I></FONT><FONT SIZE=4>
@ -38,7 +38,7 @@ language-specific wrappers should better be designed for different
languages making use of API easier. Currently we have wrappers for
C++ and Pascal, Java is coming soon. From end-user POV calls from C++
and Pascal have absolutely no difference, though some additional
language-specific features present in C++ (like manual status check
language-specific features present in C++ (like automatic status check
after API calls) are missing in Pascal.</SPAN></FONT></STRONG></P>
<P STYLE="margin-bottom: 0in; font-weight: normal"><BR>
</P>
@ -46,7 +46,7 @@ after API calls) are missing in Pascal.</SPAN></FONT></STRONG></P>
database API is used to access data stored in database. Firebird OO
API certainly performs this task but in addition it supports writing
your own </FONT><FONT SIZE=4><B>plugins</B></FONT><FONT SIZE=4> –
modules, making it possible to enhance firebird capabilities
modules, making it possible to enhance Firebird capabilities
according to your needs. Therefore this document contains 2 big parts
– accessing databases and writing plugins. Certainly some
interfaces (like status vector) are used in both parts of API, they
@ -62,8 +62,8 @@ installation package contains a number of live samples of use of OO
API – they are in examples/interfaces (database access) and
examples/dbcrypt (plugin performing </SPAN></FONT><FONT SIZE=4><SPAN LANG="en">fictitious
database encryption</SPAN></FONT><FONT SIZE=4><SPAN STYLE="font-weight: normal">)
directories. It's supposed that the reader is familiar wit ISC API
used in firebird since interbase times.</SPAN></FONT></P>
directories. It's supposed that the reader is familiar with ISC API
used in Firebird since interbase times.</SPAN></FONT></P>
<P STYLE="margin-bottom: 0in; font-weight: normal"><BR>
</P>
<P STYLE="margin-top: 0.17in; margin-bottom: 0.2in; page-break-after: avoid">
@ -72,12 +72,12 @@ databases.</FONT></FONT></FONT></P>
<H1><FONT SIZE=4>Creating database and attaching to existing
database.</FONT></H1>
<P STYLE="margin-bottom: 0in"><FONT SIZE=4>First of all we need to
get access to <B>IMaster</B> interface. IMaster is primary firebird
get access to <B>IMaster</B> interface. IMaster is primary Firebird
interface, required to access all the rest of interfaces. Therefore
there is a special way of accessing it – the only one needed to use
OO API plain function called fb_get_master_interface(). This function
has no parameters and always succeeds. There is one and only one
instance of IMaster per firebird client library, therefore one need
instance of IMaster per Firebird client library, therefore one need
not care about releasing memory, used by master interface. A simplest
way to access it from your program is to have appropriate global or
static variable:</FONT></P>
@ -86,9 +86,9 @@ master = fb_get_master_interface();</FONT></P>
<P STYLE="margin-bottom: 0in"><BR>
</P>
<P STYLE="margin-bottom: 0in"><FONT SIZE=4>For a lot of methods, used
in firebird API, first parameter is <B>IStatus</B> interface. It's a
in Firebird API, first parameter is <B>IStatus</B> interface. It's a
logical replacement of ISC_STATUS_ARRAY, but works separately with
errors and warnings (not mising them in same array), can contain
errors and warnings (not mixing them in same array), can contain
unlimited number of errors inside and (this will be important if you
plan to implement IStatus yourself) always keeps strings, referenced
by it, inside interface. Typically you need at least one instance of
@ -105,7 +105,7 @@ IStatus here.</FONT></P>
with first interface, directly related to database calls. This is
<A HREF="#Provider">IProvider</A> – interface called this way cause
it's exactly that interface that must be implemented by any provider
in firebird. Firebird client library also has it's own implementation
in Firebird. Firebird client library also has it's own implementation
of IProvider, which must be used to start any database activity. To
obtain it we call IMaster's method:</FONT></P>
<P STYLE="margin-bottom: 0in"> <FONT SIZE=4>IProvider* prov =