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