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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html>
<head>
<link href="doxygen.css" rel="stylesheet" type="text/css">
<title>User Defined Fields</title>
</head>
<body>
<div class='header'>
<div class='headertitle'>
User Defined Fields
</div>
</div>
<div class='contents'>
<p>FIX allows users to define fields not defined in the
specifications. How can QuickFIX be used to set and get user
defined fields? Well one answer would be to use the non-type
safe set and get fields like so:</p>See this code in <a href=
"python/user_defined_1.html">PYTHON</a>, <a href=
"ruby/user_defined_1.html">RUBY</a>
<pre class='fragment'>
message.setField(6123, "value");
message.getField(6123);
</pre>
<p>QuickFIX also provides supplies macros for creating typesafe
field objects.</p>See this code in <a href=
"python/user_defined_2.html">PYTHON</a>, <a href=
"ruby/user_defined_2.html">RUBY</a>
<pre class='fragment'>
#include "quickfix/Field.h"
namespace FIX
{
USER_DEFINE_STRING(MyStringField, 6123);
USER_DEFINE_PRICE(MyPriceField, 8756);
}
</pre>
<p>User defined fields must be declared within the <b>FIX</b>
namespace. Now, elsewhere in your application, you can write
code like this:</p>See this code in <a href=
"python/user_defined_3.html">PYTHON</a>, <a href=
"ruby/user_defined_3.html">RUBY</a>
<pre class='fragment'>
MyStringField stringField("string");
MyPriceField priceField(14.54);
message.setField(stringField);
message.setField(priceField);
message.getField(stringField);
message.getField(priceField);
</pre>
<p>These macros allow you to define fields of all supported FIX
types. Keep in mind you can write fields of any type types as
long as you supply a new macro and convertor that can convert
your type to and from a string.</p>
<pre class='fragment'>
USER_DEFINE_STRING( NAME, NUM )
USER_DEFINE_CHAR( NAME, NUM )
USER_DEFINE_PRICE( NAME, NUM )
USER_DEFINE_INT( NAME, NUM )
USER_DEFINE_AMT( NAME, NUM )
USER_DEFINE_QTY( NAME, NUM )
USER_DEFINE_CURRENCY( NAME, NUM )
USER_DEFINE_MULTIPLEVALUESTRING( NAME, NUM )
USER_DEFINE_EXCHANGE( NAME, NUM )
USER_DEFINE_UTCTIMESTAMP( NAME, NUM )
USER_DEFINE_BOOLEAN( NAME, NUM )
USER_DEFINE_LOCALMKTDATE( NAME, NUM )
USER_DEFINE_DATA( NAME, NUM )
USER_DEFINE_FLOAT( NAME, NUM )
USER_DEFINE_PRICEOFFSET( NAME, NUM )
USER_DEFINE_MONTHYEAR( NAME, NUM )
USER_DEFINE_DAYOFMONTH( NAME, NUM )
USER_DEFINE_UTCDATE( NAME, NUM )
USER_DEFINE_UTCTIMEONLY( NAME, NUM )
USER_DEFINE_NUMINGROUP( NAME, NUM )
USER_DEFINE_SEQNUM( NAME, NUM )
USER_DEFINE_LENGTH( NAME, NUM )
USER_DEFINE_PERCENTAGE( NAME, NUM )
USER_DEFINE_COUNTRY( NAME, NUM )
</pre>
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</body>
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