[fdo-users] How to retrieve the Oracle Spatial Data

[Donald Cameron]

Try setting a filter, for example, "sel.Filter = filter;" where filter is something like "Filter.Parse("FeatId >= 0")"

From: fdo-users-bounces at lists.osgeo.org [mailto:fdo-users-bounces at lists.osgeo.org] On Behalf Of Shaik Esu
Sent: Friday, October 31, 2008 8:55 AM
To: 'FDO Users Mail List'
Subject: RE: [fdo-users] How to retrieve the Oracle Spatial Data

"IFeatureReader FDOReader" is returning null value...







Regards,
Shaik Esu,
Sr Software Engineer,
Infotech Enterprises Ltd,
Extn: 740.
Mobile +91 9849538712.
________________________________
From: fdo-users-bounces at lists.osgeo.org [mailto:fdo-users-bounces at lists.osgeo.org] On Behalf Of Donald Cameron
Sent: Friday, October 31, 2008 6:03 PM
To: 'FDO Users Mail List'
Subject: RE: [fdo-users] How to retrieve the Oracle Spatial Data

What is the error message?

From: fdo-users-bounces at lists.osgeo.org [mailto:fdo-users-bounces at lists.osgeo.org] On Behalf Of Shaik Esu
Sent: Friday, October 31, 2008 12:04 AM
To: 'FDO Users Mail List'
Subject: [fdo-users] How to retrieve the Oracle Spatial Data

Hi All,

I want to retrieve the Geometry stored in oracle spatial.

I have written the below code

        private IProviderRegistry FDORegistry = FeatureAccessManager.GetProviderRegistry();
        private IConnectionManager FDOManager = FeatureAccessManager.GetConnectionManager();
        private IConnection FDOConnection = FeatureAccessManager.GetConnectionManager().CreateConnection("OSGeo.KingOracle.3.3");
        public ConnectionState Constate;
        string featureclsname;

        public FDOKingOracleClass(string username,string password,string servicename,string featureclassname)
        {

            FDOConnection.ConnectionInfo.ConnectionProperties.SetProperty("Username", username);
            FDOConnection.ConnectionInfo.ConnectionProperties.SetProperty("Password", password);
            FDOConnection.ConnectionInfo.ConnectionProperties.SetProperty("Service", servicename);
            FDOConnection.ConnectionInfo.ConnectionProperties.SetProperty("OracleSchema", servicename);
            FDOConnection.ConnectionInfo.ConnectionProperties.SetProperty("KingFdoClass", featureclassname);
            featureclsname = featureclassname;

           Constate =  FDOConnection.Open();
        }


I am able to open the connection without any error... but I could not able to retrieve the geometry collection.

I am getting the error in below code....


      public GeometryCollection SelectAllQuery()
        {
            GeometryCollection Geo_Collection = new GeometryCollection();
            try
            {
                ISelect sel = (ISelect)FDOConnection.CreateCommand(OSGeo.FDO.Commands.CommandType.CommandType_Select);
                sel.SetFeatureClassName(featureclsname);
                //  sel.LockType = OSGeo.FDO.Commands.Locking.LockType.LockType_Unsupported;


                IFeatureReader FDOReader = sel.Execute();
                 FgfGeometryFactory gFac = new FgfGeometryFactory();
                while (FDOReader.ReadNext())
                {
                    Byte[] Tmppts = FDOReader.GetGeometry("Geometry");
                    Geo_Collection.Add(gFac.CreateGeometryFromFgf(Tmppts));
                }


            }
            catch(OSGeo.FDO.Common.Exception ex)
            {
                MessageBox.Show(ex.Message.ToString());

            }
            return Geo_Collection;
        }




If anybody has the code to retrieve the spatial data, please help me.

 Thank You,



Regards,
Shaik Esu,
Sr Software Engineer,
Infotech Enterprises Ltd,
Extn: 740.
Mobile +91 9849538712.

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