ADO.NET Provider for Apache HBase

Build 21.0.7930

Updating the Data

Use the adapter's Update method to update the data. This overloaded method can take a DataTable as a parameter and will commit all the changes made to the data source. The name of the data table can be passed as an argument and can also be used to update the entire dataset in a more traditional manner. When using a data table as an argument to the Update method, the adapter evaluates the changes that have been made to the data table and executes the appropriate command for each row (INSERT, UPDATE, or DELETE).

The example below updates the Name of one of the Account entries.

C#

using (ApacheHBaseConnection connection = new ApacheHBaseConnection(connectionString)) {
  ApacheHBaseDataAdapter dataAdapter = new ApacheHBaseDataAdapter(
    "SELECT Id, Name FROM Account", connection);

  dataAdapter.UpdateCommand = new ApacheHBaseCommand(
    "UPDATE Account SET Name = @Name " +
    "WHERE Id = @Id", connection);
 
  dataAdapter.UpdateCommand.Parameters.Add(new ApacheHBaseParameter("@Name", DbType.String, "Name"));
  dataAdapter.UpdateCommand.Parameters.Add(new ApacheHBaseParameter("@Id", DbType.String, "Id"));
  dataAdapter.UpdateCommand.Parameters[1].SourceVersion = DataRowVersion.Original;

  DataTable table = new DataTable();
  dataAdapter.Fill(table);

  DataRow firstrow = table.Rows[0];
  firstrow["Name"] = "Jon Doe";

  dataAdapter.Update(table);

  Console.WriteLine("Rows after update.");
  
  foreach (DataRow row in table.Rows) {
    Console.WriteLine("{0}: {1}", row["Id"], row["Name"]);
  }
}

VB.NET

Using connection As New ApacheHBaseConnection(connectionString)
  Dim dataAdapter As New ApacheHBaseDataAdapter(
    "SELECT Id, Name FROM Account", connection)
  
  dataAdapter.UpdateCommand = New ApacheHBaseCommand(
    "UPDATE Account SET Name = @Name " +
    "WHERE Id = @Id", connection)
  
  dataAdapter.UpdateCommand.Parameters.Add(new ApacheHBaseParameter("@Name", DbType.String, "Name"))
  dataAdapter.UpdateCommand.Parameters.Add(new ApacheHBaseParameter("@Id", DbType.String, "Id"))
  dataAdapter.UpdateCommand.Parameters(1).SourceVersion = DataRowVersion.Original
  
  Dim table As New DataTable()
  dataAdapter.Fill(table)
  
  Dim firstrow As DataRow = table.Rows(0)
  firstrow("Name") = "Jon Doe"
  
  dataAdapter.Update(table)
  
  Console.WriteLine("Rows after update.")
  
  For Each row As DataRow In table.Rows
    Console.WriteLine("{0}: {1}", row("Id"), row("Name"))
  Next
End Using

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Build 21.0.7930