mcs/class/System.Data/System.Data.Common/DataAdapter.cs

   1 //
   2 // System.Data.Common.DataAdapter
   3 //
   4 // Author:
   5 //   Rodrigo Moya (rodrigo@ximian.com)
   6 //
   7 // (C) Ximian, Inc
   8 //
   9
  10 using System.ComponentModel;
  11 using System.Data;
  12
  13 namespace System.Data.Common
  14 {
  15         /// <summary>
  16         /// Represents a set of data commands and a database connection that are used to fill the DataSet and update the data source.
  17         /// </summary>
  18         public abstract class DataAdapter : Component, IDataAdapter
  19         {
  20                 private bool acceptChangesDuringFill;
  21                 private bool continueUpdateOnError;
  22                 private MissingMappingAction missingMappingAction;
  23                 private MissingSchemaAction missingSchemaAction;
  24                 private DataTableMappingCollection tableMappings;
  25
  26                 protected DataAdapter () {
  27                         acceptChangesDuringFill = false;
  28                         continueUpdateOnError = false;
  29                         missingMappingAction = MissingMappingAction.Error;
  30                         missingSchemaAction = MissingSchemaAction.Error;
  31                         tableMappings = null;
  32                 }
  33
  34                 public abstract int Fill (DataSet dataSet);
  35
  36                 public abstract DataTable[] FillSchema (DataSet dataSet,
  37                                                         SchemaType schemaType);
  38
  39                 public abstract IDataParameter[] GetFillParameters ();
  40
  41                 public abstract int Update (DataSet dataSet);
  42
  43                 protected virtual DataAdapter CloneInternals () {
  44                 }
  45
  46                 protected virtual DataTableMappingCollection CreateTableMappings () {
  47                 }
  48
  49                 protected virtual bool ShouldSerializeTableMappings () {
  50                 }
  51
  52                 public bool AcceptChangesDuringFill {
  53                         get {
  54                                 return acceptChangesDuringFill;
  55                         }
  56                         set {
  57                                 acceptChangesDuringFill = value;
  58                         }
  59                 }
  60
  61                 public bool ContinueUpdateOnError {
  62                         get {
  63                                 return continueUpdateOnError;
  64                         }
  65                         set {
  66                                 continueUpdateOnError = value;
  67                         }
  68                 }
  69
  70                 public MissingMappingAction MissingMappingAction {
  71                         get {
  72                                 return missingMappingAction;
  73                         }
  74                         set {
  75                                 missingMappingAction = value;
  76                         }
  77                 }
  78
  79                 public MissingSchemaAction MissingSchemaAction {
  80                         get {
  81                                 return missingSchemaAction;
  82                         }
  83                         set {
  84                                 missingSchemaAction = value;
  85                         }
  86                 }
  87
  88                 public DataTableMappingCollection TableMappings {
  89                         get {
  90                                 if (tableMappings == null)
  91                                         tableMappings = CreateTableMappings ();
  92                                 return tableMappings;
  93                         }
  94                 }
  95         }
  96 }