[fdo-dev] ConnectionString property
Romica.Dascalescu at autodesk.com
Fri Dec 15 21:06:17 EST 2006
Each rdbms provider must implement GetConnectionProperties which returns
Inside of this function you must define which properties are recognized
by the provider. In case user passing an invalid parameter
FdoRdbmsConnection::Open will throw an exception.
FdoRdbmsConnection::Open() checks in a general way the parameters passed
by the user using the FdoIConnectionPropertyDictionary returned by
DbiConnection::Open() is an internal class/function which is the same
for all providers but is not checking for the connections parameters.
You can allow a parameter by adding the property to the connection
Even in DbiConnection::Open() we checking for connection string if
connection string was not allowed in the GetConnectionProperties you
will get an exception.
DbiConnection::Open() is not validating the connection string,
FdoRdbmsConnection::Open() will validate it.
From: Mateusz Loskot [mailto:mateusz at loskot.net]
Sent: Friday, December 15, 2006 7:34 PM
To: dev at fdo.osgeo.org
Subject: Re: [fdo-dev] ConnectionString property
Mateusz Loskot wrote:
> I'm testing the PostGIS provider with both approaches and the latter
> works, but the former doesn't for me. What's interesting, MySQL
> provider also doesn't work with the ConnectionString property.
> Here is my full string I use to connect to a particular database:
> ConnectionString=fdo_test at localhost;username=mloskot;password=pantera;
One additional note.
Currently, I use simple hack to pass database name together with
hostname but without using ConnectionString property:
service=fdo_test at localhost;username=mloskot;password=pantera;
a) the FdoRdbmsConnection::Open() doesn't refuse the parameters set as
including invalid property.
b) value of service= parameter is passed to rdbi_connect as DataSource
instead of as ConnectionString, but it doesn't matter, because I still
can decode the value and retrieve all components I need.
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