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

   1 //
   2 // System.Data.Common.DataColumnMappingCollection
   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;
  36 using System.Collections;
  37 using System.ComponentModel;
  38 using System.Data;
  39
  40 namespace System.Data.Common {
  41         public sealed class DataColumnMappingCollection : MarshalByRefObject, IColumnMappingCollection , IList, ICollection, IEnumerable
  42         {
  43                 #region Fields
  44
  45                 ArrayList list;
  46                 Hashtable sourceColumns;
  47                 Hashtable dataSetColumns;
  48
  49                 #endregion // Fields
  50
  51                 #region Constructors
  52
  53                 public DataColumnMappingCollection ()
  54                 {
  55                         list = new ArrayList ();
  56                         sourceColumns = new Hashtable ();
  57                         dataSetColumns = new Hashtable ();
  58                 }
  59
  60                 #endregion // Constructors
  61
  62                 #region Properties
  63
  64                 [Browsable (false)]
  65                 [DataSysDescription ("The number of items in the collection")]
  66                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  67                 public int Count {
  68                         get { return list.Count; }
  69                 }
  70
  71                 [Browsable (false)]
  72                 [DataSysDescription ("The specified DataColumnMapping object.")]
  73                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  74                 public DataColumnMapping this [int index] {
  75                         get { return (DataColumnMapping)(list[index]); }
  76                         set {
  77                                 DataColumnMapping mapping = (DataColumnMapping)(list[index]);
  78                                 sourceColumns[mapping] = value;
  79                                 dataSetColumns[mapping] = value;
  80                                 list[index] = value;
  81                         }
  82                 }
  83
  84                 [Browsable (false)]
  85                 [DataSysDescription ("DataTableMappings_Item")]
  86                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  87                 public DataColumnMapping this [string sourceColumn] {
  88                         get {
  89                                 if (!Contains(sourceColumn)) {
  90                                         throw new IndexOutOfRangeException("DataColumnMappingCollection doesn't contain DataColumnMapping with SourceColumn '" + sourceColumn + "'.");
  91                                 }
  92                                 return (DataColumnMapping) sourceColumns[sourceColumn]; }
  93                         set { this [list.IndexOf (sourceColumns[sourceColumn])] = value; }
  94                 }
  95
  96                 object ICollection.SyncRoot {
  97                         get { return list.SyncRoot; }
  98                 }
  99
 100                 bool ICollection.IsSynchronized {
 101                         get { return list.IsSynchronized; }
 102                 }
 103
 104                 object IColumnMappingCollection.this [string sourceColumn] {
 105                         get { return this [sourceColumn]; }
 106                         set {
 107                                 if (!(value is DataColumnMapping))
 108                                         throw new ArgumentException ();
 109                                 this [sourceColumn] = (DataColumnMapping) value;
 110                         }
 111                 }
 112
 113                 object IList.this [int index] {
 114                         get { return this[index]; }
 115                         set {
 116                                 if (!(value is DataColumnMapping))
 117                                         throw new ArgumentException ();
 118                                 this [index] = (DataColumnMapping) value;
 119                          }
 120                 }
 121
 122                 bool IList.IsReadOnly {
 123                         get { return false; }
 124                 }
 125
 126                 bool IList.IsFixedSize {
 127                         get { return false; }
 128                 }
 129
 130                 #endregion // Properties
 131
 132                 #region Methods
 133
 134                 public int Add (object value)
 135                 {
 136                         if (!(value is DataColumnMapping))
 137                                 throw new InvalidCastException ();
 138
 139                         list.Add (value);
 140                         sourceColumns[((DataColumnMapping)value).SourceColumn] = value;
 141                         dataSetColumns[((DataColumnMapping)value).DataSetColumn] = value;
 142                         return list.IndexOf (value);
 143                 }
 144
 145                 public DataColumnMapping Add (string sourceColumn, string dataSetColumn)
 146                 {
 147                         DataColumnMapping mapping = new DataColumnMapping (sourceColumn, dataSetColumn);
 148                         Add (mapping);
 149                         return mapping;
 150                 }
 151
 152 #if NET_2_0
 153                 [MonoTODO]
 154                 public void AddRange (Array values)
 155                 {
 156                         throw new NotImplementedException ();
 157                 }
 158 #endif
 159
 160                 public void AddRange (DataColumnMapping[] values)
 161                 {
 162                         foreach (DataColumnMapping mapping in values)
 163                                 Add (mapping);
 164                 }
 165
 166                 public void Clear ()
 167                 {
 168                         list.Clear ();
 169                 }
 170
 171                 public bool Contains (object value)
 172                 {
 173                         if  (!(value is DataColumnMapping))
 174                                 throw new InvalidCastException("Object is not of type DataColumnMapping");
 175                         return (list.Contains (value));
 176                 }
 177
 178                 public bool Contains (string value)
 179                 {
 180                         return (sourceColumns.Contains (value));
 181                 }
 182
 183                 public void CopyTo (Array array, int index)
 184                 {
 185                         (list.ToArray()).CopyTo(array,index);
 186                 }
 187
 188                 public DataColumnMapping GetByDataSetColumn (string value)
 189                 {
 190                         // this should work case-insenstive.
 191                         if (!(dataSetColumns[value] == null))
 192                                 return (DataColumnMapping)(dataSetColumns[value]);
 193                         else {
 194                                 string lowcasevalue = value.ToLower();
 195                                 object [] keyarray = new object[dataSetColumns.Count];
 196                                 dataSetColumns.Keys.CopyTo(keyarray,0);
 197                                 for (int i=0; i<keyarray.Length; i++) {
 198                                         string temp = (string) keyarray[i];
 199                                         if (lowcasevalue.Equals(temp.ToLower()))
 200                                                 return (DataColumnMapping)(dataSetColumns[keyarray[i]]);
 201                                 }
 202                                 return null;
 203
 204                         }
 205                 }
 206
 207                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 208                 public static DataColumnMapping GetColumnMappingBySchemaAction (DataColumnMappingCollection columnMappings, string sourceColumn, MissingMappingAction mappingAction)
 209                 {
 210                         if (columnMappings.Contains (sourceColumn))
 211                                 return columnMappings[sourceColumn];
 212                         if (mappingAction == MissingMappingAction.Ignore)
 213                                 return null;
 214                         if (mappingAction == MissingMappingAction.Error)
 215                                 throw new InvalidOperationException (String.Format ("Missing SourceColumn mapping for '{0}'", sourceColumn));
 216                         return new DataColumnMapping (sourceColumn, sourceColumn);
 217                 }
 218
 219 #if NET_2_0
 220                 [MonoTODO]
 221                 public static DataColumn GetDataColumn (DataColumnMappingCollection columnMappings, string sourceColumn, Type dataType, DataTable dataTable, MissingMappingAction mappingAction, MissingSchemaAction schemaAction)
 222                 {
 223                         throw new NotImplementedException ();
 224                 }
 225 #endif
 226
 227                 public IEnumerator GetEnumerator ()
 228                 {
 229                         return list.GetEnumerator ();
 230                 }
 231
 232                 IColumnMapping IColumnMappingCollection.Add (string sourceColumnName, string dataSetColumnName)
 233                 {
 234                         return Add (sourceColumnName, dataSetColumnName);
 235                 }
 236
 237                 IColumnMapping IColumnMappingCollection.GetByDataSetColumn (string dataSetColumnName)
 238                 {
 239                         return GetByDataSetColumn (dataSetColumnName);
 240                 }
 241
 242                 public int IndexOf (object value)
 243                 {
 244                         return list.IndexOf (value);
 245                 }
 246
 247                 public int IndexOf (string sourceColumn)
 248                 {
 249                         return list.IndexOf (sourceColumns[sourceColumn]);
 250                 }
 251
 252                 public int IndexOfDataSetColumn (string value)
 253                 {
 254                         // this should work case-insensitive
 255
 256                          if (!(dataSetColumns[value] == null))
 257                                 return list.IndexOf (dataSetColumns[value]);
 258                         else {
 259                                 string lowcasevalue = value.ToLower();
 260                                 object [] keyarray = new object[dataSetColumns.Count];
 261                                 dataSetColumns.Keys.CopyTo(keyarray,0);
 262                                 for (int i=0; i<keyarray.Length; i++) {
 263                                         string temp = (string) keyarray[i];
 264                                         if (lowcasevalue.Equals(temp.ToLower()))
 265                                                 return list.IndexOf (dataSetColumns[keyarray[i]]);
 266
 267                                 }
 268                                 return -1;
 269
 270                         }
 271
 272                 }
 273
 274                 public void Insert (int index, object value)
 275                 {
 276                         list.Insert (index, value);
 277                         sourceColumns[((DataColumnMapping)value).SourceColumn] = value;
 278                         dataSetColumns[((DataColumnMapping)value).DataSetColumn] = value;
 279                 }
 280
 281                 public void Remove (object value)
 282                 {
 283                         int index = list.IndexOf (value);
 284                         sourceColumns.Remove(((DataColumnMapping)value).SourceColumn);
 285                         dataSetColumns.Remove(((DataColumnMapping)value).DataSetColumn);
 286                         if (( index < 0 ) || (index >=list.Count))
 287                                     throw new ArgumentException("There is no such element in collection.");
 288
 289                         list.Remove (value);
 290                 }
 291
 292                 public void RemoveAt (int index)
 293                 {
 294                         if (( index < 0 ) || (index >=list.Count))
 295                                     throw new IndexOutOfRangeException("There is no element in collection.");
 296
 297                         Remove (list[index]);
 298                 }
 299
 300                 public void RemoveAt (string sourceColumn)
 301                 {
 302                         RemoveAt (list.IndexOf (sourceColumns[sourceColumn]));
 303                 }
 304
 305                 #endregion // Methods
 306         }
 307 }