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 #if !NET_2_0
  66                 [DataSysDescription ("The number of items in the collection")]
  67 #endif
  68                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  69                 public int Count {
  70                         get { return list.Count; }
  71                 }
  72
  73                 [Browsable (false)]
  74 #if !NET_2_0
  75                 [DataSysDescription ("The specified DataColumnMapping object.")]
  76 #endif
  77                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  78                 public DataColumnMapping this [int index] {
  79                         get { return (DataColumnMapping)(list[index]); }
  80                         set {
  81                                 DataColumnMapping mapping = (DataColumnMapping)(list[index]);
  82                                 sourceColumns[mapping] = value;
  83                                 dataSetColumns[mapping] = value;
  84                                 list[index] = value;
  85                         }
  86                 }
  87
  88                 [Browsable (false)]
  89 #if !NET_2_0
  90                 [DataSysDescription ("The specified DataColumnMapping object.")]
  91 #endif
  92                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  93                 public DataColumnMapping this [string sourceColumn] {
  94                         get {
  95                                 if (!Contains(sourceColumn)) {
  96                                         throw new IndexOutOfRangeException("DataColumnMappingCollection doesn't contain DataColumnMapping with SourceColumn '" + sourceColumn + "'.");
  97                                 }
  98                                 return (DataColumnMapping) sourceColumns[sourceColumn]; }
  99                         set { this [list.IndexOf (sourceColumns[sourceColumn])] = value; }
 100                 }
 101
 102                 object ICollection.SyncRoot {
 103                         get { return list.SyncRoot; }
 104                 }
 105
 106                 bool ICollection.IsSynchronized {
 107                         get { return list.IsSynchronized; }
 108                 }
 109
 110                 object IColumnMappingCollection.this [string sourceColumn] {
 111                         get { return this [sourceColumn]; }
 112                         set {
 113                                 if (!(value is DataColumnMapping))
 114                                         throw new ArgumentException ();
 115                                 this [sourceColumn] = (DataColumnMapping) value;
 116                         }
 117                 }
 118
 119                 object IList.this [int index] {
 120                         get { return this[index]; }
 121                         set {
 122                                 if (!(value is DataColumnMapping))
 123                                         throw new ArgumentException ();
 124                                 this [index] = (DataColumnMapping) value;
 125                          }
 126                 }
 127
 128                 bool IList.IsReadOnly {
 129                         get { return false; }
 130                 }
 131
 132                 bool IList.IsFixedSize {
 133                         get { return false; }
 134                 }
 135
 136                 #endregion // Properties
 137
 138                 #region Methods
 139
 140                 public int Add (object value)
 141                 {
 142                         if (!(value is DataColumnMapping))
 143                                 throw new InvalidCastException ();
 144
 145                         list.Add (value);
 146                         sourceColumns[((DataColumnMapping)value).SourceColumn] = value;
 147                         dataSetColumns[((DataColumnMapping)value).DataSetColumn] = value;
 148                         return list.IndexOf (value);
 149                 }
 150
 151                 public DataColumnMapping Add (string sourceColumn, string dataSetColumn)
 152                 {
 153                         DataColumnMapping mapping = new DataColumnMapping (sourceColumn, dataSetColumn);
 154                         Add (mapping);
 155                         return mapping;
 156                 }
 157
 158 #if NET_2_0
 159                 [MonoTODO]
 160                 public void AddRange (Array values)
 161                 {
 162                         throw new NotImplementedException ();
 163                 }
 164 #endif
 165
 166                 public void AddRange (DataColumnMapping[] values)
 167                 {
 168                         foreach (DataColumnMapping mapping in values)
 169                                 Add (mapping);
 170                 }
 171
 172                 public void Clear ()
 173                 {
 174                         list.Clear ();
 175                 }
 176
 177                 public bool Contains (object value)
 178                 {
 179                         if  (!(value is DataColumnMapping))
 180                                 throw new InvalidCastException("Object is not of type DataColumnMapping");
 181                         return (list.Contains (value));
 182                 }
 183
 184                 public bool Contains (string value)
 185                 {
 186                         return (sourceColumns.Contains (value));
 187                 }
 188
 189                 public void CopyTo (Array array, int index)
 190                 {
 191                         (list.ToArray()).CopyTo(array,index);
 192                 }
 193
 194                 public DataColumnMapping GetByDataSetColumn (string value)
 195                 {
 196                         // this should work case-insenstive.
 197                         if (!(dataSetColumns[value] == null))
 198                                 return (DataColumnMapping)(dataSetColumns[value]);
 199                         else {
 200                                 string lowcasevalue = value.ToLower();
 201                                 object [] keyarray = new object[dataSetColumns.Count];
 202                                 dataSetColumns.Keys.CopyTo(keyarray,0);
 203                                 for (int i=0; i<keyarray.Length; i++) {
 204                                         string temp = (string) keyarray[i];
 205                                         if (lowcasevalue.Equals(temp.ToLower()))
 206                                                 return (DataColumnMapping)(dataSetColumns[keyarray[i]]);
 207                                 }
 208                                 return null;
 209
 210                         }
 211                 }
 212
 213                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 214                 public static DataColumnMapping GetColumnMappingBySchemaAction (DataColumnMappingCollection columnMappings, string sourceColumn, MissingMappingAction mappingAction)
 215                 {
 216                         if (columnMappings.Contains (sourceColumn))
 217                                 return columnMappings[sourceColumn];
 218                         if (mappingAction == MissingMappingAction.Ignore)
 219                                 return null;
 220                         if (mappingAction == MissingMappingAction.Error)
 221                                 throw new InvalidOperationException (String.Format ("Missing SourceColumn mapping for '{0}'", sourceColumn));
 222                         return new DataColumnMapping (sourceColumn, sourceColumn);
 223                 }
 224
 225 #if NET_2_0
 226                 [MonoTODO]
 227                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 228                 public static DataColumn GetDataColumn (DataColumnMappingCollection columnMappings, string sourceColumn, Type dataType, DataTable dataTable, MissingMappingAction mappingAction, MissingSchemaAction schemaAction)
 229                 {
 230                         throw new NotImplementedException ();
 231                 }
 232 #endif
 233
 234                 public IEnumerator GetEnumerator ()
 235                 {
 236                         return list.GetEnumerator ();
 237                 }
 238
 239                 IColumnMapping IColumnMappingCollection.Add (string sourceColumnName, string dataSetColumnName)
 240                 {
 241                         return Add (sourceColumnName, dataSetColumnName);
 242                 }
 243
 244                 IColumnMapping IColumnMappingCollection.GetByDataSetColumn (string dataSetColumnName)
 245                 {
 246                         return GetByDataSetColumn (dataSetColumnName);
 247                 }
 248
 249                 public int IndexOf (object value)
 250                 {
 251                         return list.IndexOf (value);
 252                 }
 253
 254                 public int IndexOf (string sourceColumn)
 255                 {
 256                         return list.IndexOf (sourceColumns[sourceColumn]);
 257                 }
 258
 259                 public int IndexOfDataSetColumn (string value)
 260                 {
 261                         // this should work case-insensitive
 262
 263                          if (!(dataSetColumns[value] == null))
 264                                 return list.IndexOf (dataSetColumns[value]);
 265                         else {
 266                                 string lowcasevalue = value.ToLower();
 267                                 object [] keyarray = new object[dataSetColumns.Count];
 268                                 dataSetColumns.Keys.CopyTo(keyarray,0);
 269                                 for (int i=0; i<keyarray.Length; i++) {
 270                                         string temp = (string) keyarray[i];
 271                                         if (lowcasevalue.Equals(temp.ToLower()))
 272                                                 return list.IndexOf (dataSetColumns[keyarray[i]]);
 273
 274                                 }
 275                                 return -1;
 276
 277                         }
 278
 279                 }
 280
 281                 public void Insert (int index, object value)
 282                 {
 283                         list.Insert (index, value);
 284                         sourceColumns[((DataColumnMapping)value).SourceColumn] = value;
 285                         dataSetColumns[((DataColumnMapping)value).DataSetColumn] = value;
 286                 }
 287
 288                 public void Remove (object value)
 289                 {
 290                         int index = list.IndexOf (value);
 291                         sourceColumns.Remove(((DataColumnMapping)value).SourceColumn);
 292                         dataSetColumns.Remove(((DataColumnMapping)value).DataSetColumn);
 293                         if (( index < 0 ) || (index >=list.Count))
 294                                     throw new ArgumentException("There is no such element in collection.");
 295
 296                         list.Remove (value);
 297                 }
 298
 299                 public void RemoveAt (int index)
 300                 {
 301                         if (( index < 0 ) || (index >=list.Count))
 302                                     throw new IndexOutOfRangeException("There is no element in collection.");
 303
 304                         Remove (list[index]);
 305                 }
 306
 307                 public void RemoveAt (string sourceColumn)
 308                 {
 309                         RemoveAt (list.IndexOf (sourceColumns[sourceColumn]));
 310                 }
 311
 312                 #endregion // Methods
 313         }
 314 }