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

   1 //
   2 // System.Data.Common.DataTableMapping.cs
   3 //
   4 // Authors:
   5 //   Rodrigo Moya (rodrigo@ximian.com)
   6 //   Tim Coleman (tim@timcoleman.com)
   7 //
   8 // (C) Ximian, Inc
   9 // Copyright (C) Tim Coleman, 2002-2003
  10 //
  11
  12 //
  13 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  14 //
  15 // Permission is hereby granted, free of charge, to any person obtaining
  16 // a copy of this software and associated documentation files (the
  17 // "Software"), to deal in the Software without restriction, including
  18 // without limitation the rights to use, copy, modify, merge, publish,
  19 // distribute, sublicense, and/or sell copies of the Software, and to
  20 // permit persons to whom the Software is furnished to do so, subject to
  21 // the following conditions:
  22 //
  23 // The above copyright notice and this permission notice shall be
  24 // included in all copies or substantial portions of the Software.
  25 //
  26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  33 //
  34
  35 using System.ComponentModel;
  36 using System.Data;
  37
  38 namespace System.Data.Common {
  39         [TypeConverterAttribute (typeof (DataTableMappingConverter))]
  40         public sealed class DataTableMapping : MarshalByRefObject, ITableMapping, ICloneable
  41         {
  42                 #region Fields
  43
  44                 string sourceTable;
  45                 string dataSetTable;
  46                 DataColumnMappingCollection columnMappings;
  47
  48                 #endregion // Fields
  49
  50                 #region Constructors
  51
  52                 public DataTableMapping ()
  53                 {
  54                         dataSetTable = String.Empty;
  55                         sourceTable = String.Empty;
  56                         columnMappings = new DataColumnMappingCollection ();
  57                 }
  58
  59                 public DataTableMapping (string sourceTable, string dataSetTable)
  60                         : this ()
  61                 {
  62                         this.sourceTable = sourceTable;
  63                         this.dataSetTable = dataSetTable;
  64                 }
  65
  66                 public DataTableMapping (string sourceTable, string dataSetTable, DataColumnMapping[] columnMappings)
  67                         : this (sourceTable, dataSetTable)
  68                 {
  69                         this.columnMappings.AddRange (columnMappings);
  70                 }
  71
  72                 #endregion // Constructors
  73
  74                 #region Properties
  75
  76                 [DataSysDescription ("Individual columns mappings when this table mapping is matched.")]
  77                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Content)]
  78                 public DataColumnMappingCollection ColumnMappings {
  79                         get { return columnMappings; }
  80                 }
  81
  82                 [DataSysDescription ("DataTable.TableName")]
  83                 [DefaultValue ("")]
  84                 public string DataSetTable {
  85                         get { return dataSetTable; }
  86                         set { dataSetTable = value; }
  87                 }
  88
  89                 IColumnMappingCollection ITableMapping.ColumnMappings {
  90                         get { return ColumnMappings; }
  91                 }
  92
  93                 [DataSysDescription ("The DataTableMapping source table name. This name is case sensitive.")]
  94                 [DefaultValue ("")]
  95                 public string SourceTable {
  96                         get { return sourceTable; }
  97                         set { sourceTable = value; }
  98                 }
  99
 100                 #endregion // Properties
 101
 102                 #region Methods
 103
 104                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 105                 public DataColumnMapping GetColumnMappingBySchemaAction (string sourceColumn, MissingMappingAction mappingAction)
 106                 {
 107                         return DataColumnMappingCollection.GetColumnMappingBySchemaAction (columnMappings, sourceColumn, mappingAction);
 108                 }
 109
 110 #if NET_2_0
 111                 [MonoTODO]
 112                 public DataColumn GetDataColumn (string sourceColumn, Type dataType, DataTable dataTable, MissingMappingAction mappingAction, MissingSchemaAction schemaAction)
 113                 {
 114                         throw new NotImplementedException ();
 115                 }
 116 #endif
 117
 118                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 119                 public DataTable GetDataTableBySchemaAction (DataSet dataSet, MissingSchemaAction schemaAction)
 120                 {
 121                         if (dataSet.Tables.Contains (DataSetTable))
 122                                 return dataSet.Tables [DataSetTable];
 123                         if (schemaAction == MissingSchemaAction.Ignore)
 124                                 return null;
 125                         if (schemaAction == MissingSchemaAction.Error)
 126                                 throw new InvalidOperationException (String.Format ("Missing the '{0} DataTable for the '{1}' SourceTable", DataSetTable, SourceTable));
 127                         return new DataTable (DataSetTable);
 128                 }
 129
 130                 object ICloneable.Clone ()
 131                 {
 132                         DataColumnMapping [] arr = new DataColumnMapping [columnMappings.Count];
 133                         columnMappings.CopyTo (arr, 0);
 134                         return new DataTableMapping (SourceTable, DataSetTable, arr);
 135                 }
 136
 137                 public override string ToString ()
 138                 {
 139                         return SourceTable;
 140                 }
 141
 142                 #endregion // Methods
 143         }
 144 }