OracleLoaderColumn Class

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Represents the attributes for column loading.

Syntax

Visual Basic
C#


'Declaration Public Class OracleLoaderColumn Inherits Devart.Common.DbLoaderColumn


public class OracleLoaderColumn : Devart.Common.DbLoaderColumn

Remarks

Each OracleLoader uses a Columns to maintain a collection of OracleLoaderColumn objects. The OracleLoaderColumn object represents the attributes for column loading. Every OracleLoaderColumn object corresponds to one of the table fields with the same name as its Name property.

You can manually make changes to the Columns collection to exclude some columns from INSERT statement generated by OracleLoader object.

Note: This class is available with dotConnect for Oracle Professional edition only.

Example

This sample shows how to perform loading of data into a table with the last column set to default value.

csharp


public void LoadData(OracleConnection myConnection) { myConnection.Open(); OracleLoader loader = new OracleLoader(); loader.Connection = myConnection; loader.TableName = "load_table"; try { loader.CreateColumns(); //Do not insert data in the last column loader.Columns.RemoveAt(loader.Columns.Count-1); loader.Open(); for (int i = 1; i <= 100; i++) { loader.SetValue("id", i); loader.SetValue(1, "test string"); loader.SetValue("date_field", DateTime.Now); loader.NextRow(); } loader.Close(); } finally { myConnection.Close(); } }

public void LoadData(OracleConnection myConnection)
{
  myConnection.Open();
  OracleLoader loader = new OracleLoader();
  loader.Connection = myConnection;
  loader.TableName = "load_table";
  try
  {
    loader.CreateColumns();
    //Do not insert data in the last column
    loader.Columns.RemoveAt(loader.Columns.Count-1);
    loader.Open();
    for (int i = 1; i <= 100; i++)
    {
      loader.SetValue("id", i);
      loader.SetValue(1, "test string");
      loader.SetValue("date_field", DateTime.Now);
      loader.NextRow();
    }
    loader.Close();
  }
  finally
  {
    myConnection.Close();
  }
}

Visual Basic


Public Sub LoadData(ByVal myConnection As OracleConnection) myConnection.Open() Dim loader As OracleLoader loader = New OracleLoader loader.Connection = myConnection loader.TableName = "load_table" Try loader.CreateColumns() ' Do not insert data in the last column loader.Columns.RemoveAt(loader.Columns.Count - 1) loader.Open() Dim i As Integer For i = 1 To 100 loader.SetValue("id", i) loader.SetValue(1, "test string") loader.SetValue("date_field", DateTime.Now) loader.NextRow() Next i loader.Close() Finally myConnection.Close() End Try End Sub

Public Sub LoadData(ByVal myConnection As OracleConnection)
  myConnection.Open()
  Dim loader As OracleLoader
  loader = New OracleLoader
  loader.Connection = myConnection
  loader.TableName = "load_table"
  Try
    loader.CreateColumns()
    ' Do not insert data in the last column
    loader.Columns.RemoveAt(loader.Columns.Count - 1)
    loader.Open()
    Dim i As Integer
    For i = 1 To 100
      loader.SetValue("id", i)
      loader.SetValue(1, "test string")
      loader.SetValue("date_field", DateTime.Now)
      loader.NextRow()
    Next i
    loader.Close()
  Finally
    myConnection.Close()
  End Try
End Sub

Inheritance Hierarchy

System.Object
   System.MarshalByRefObject
      Devart.Common.DbLoaderColumn
         Devart.Data.Oracle.OracleLoaderColumn

Reference

OracleLoaderColumn Members
Devart.Data.Oracle Namespace

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