beagled/Mono.Data.SqliteClient/SqliteParameterCollection.cs

   1 //
   2 // Mono.Data.SqliteClient.SqliteParameterCollection.cs
   3 //
   4 // Represents a collection of parameters relevant to a SqliteCommand as well as
   5 // their respective mappings to columns in a DataSet.
   6 //
   7 // Author(s): Vladimir Vukicevic  <vladimir@pobox.com>
   8 //            Everaldo Canuto  <everaldo_canuto@yahoo.com.br>
   9 //
  10 // Copyright (C) 2002  Vladimir Vukicevic
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33 using System.Data;
  34 using System.Collections;
  35
  36 namespace Mono.Data.SqliteClient
  37 {
  38         public class SqliteParameterCollection : IDataParameterCollection, IList
  39         {
  40
  41                 #region Fields
  42
  43                 ArrayList numeric_param_list = new ArrayList();
  44                 Hashtable named_param_hash = new Hashtable();
  45
  46                 #endregion
  47
  48                 #region Private Methods
  49
  50                 private void CheckSqliteParam (object value)
  51                 {
  52                         if (!(value is SqliteParameter))
  53                                 throw new InvalidCastException("Can only use SqliteParameter objects");
  54                 }
  55
  56                 private void RecreateNamedHash ()
  57                 {
  58                         for (int i = 0; i < numeric_param_list.Count; i++) {
  59                                 named_param_hash[((SqliteParameter) numeric_param_list[i]).ParameterName] = i;
  60                         }
  61                 }
  62
  63                 #endregion
  64
  65                 #region Properties
  66
  67                 object IList.this[int index] {
  68                         get {
  69                                 return this[index];
  70                         }
  71                         set {
  72                                 CheckSqliteParam (value);
  73                                 this[index] = (SqliteParameter) value;
  74                         }
  75                 }
  76
  77                 object IDataParameterCollection.this[string parameterName] {
  78                         get {
  79                                 return this[parameterName];
  80                         }
  81                         set {
  82                                 CheckSqliteParam (value);
  83                                 this[parameterName] = (SqliteParameter) value;
  84                         }
  85                 }
  86
  87                 public SqliteParameter this[string parameterName] {
  88                         get {
  89                                 return this[(int) named_param_hash[parameterName]];
  90                         }
  91                         set {
  92                                 if (this.Contains (parameterName))
  93                                         numeric_param_list[(int) named_param_hash[parameterName]] = value;
  94                                 else          // uhm, do we add it if it doesn't exist? what does ms do?
  95                                         Add (value);
  96                         }
  97                 }
  98
  99                 public SqliteParameter this[int parameterIndex] {
 100                         get {
 101                                 return (SqliteParameter) numeric_param_list[parameterIndex];
 102                         }
 103                         set {
 104                                 numeric_param_list[parameterIndex] = value;
 105                         }
 106                 }
 107
 108                 public int Count {
 109                         get { return numeric_param_list.Count; }
 110                 }
 111
 112                 public bool IsFixedSize {
 113                         get { return false; }
 114                 }
 115
 116                 public bool IsReadOnly {
 117                         get { return false; }
 118                 }
 119
 120                 public bool IsSynchronized {
 121                         get { return false; }
 122                 }
 123
 124                 public object SyncRoot {
 125                         get { return null; }
 126                 }
 127
 128                 #endregion
 129
 130                 #region Public Methods
 131
 132                 public int Add (object value)
 133                 {
 134                         CheckSqliteParam (value);
 135                         SqliteParameter sqlp = (SqliteParameter) value;
 136                         if (named_param_hash.Contains (sqlp.ParameterName))
 137                                 throw new DuplicateNameException ("Parameter collection already contains given value.");
 138
 139                         named_param_hash[value] = numeric_param_list.Add (value);
 140
 141                         return (int) named_param_hash[value];
 142                 }
 143
 144                 public SqliteParameter Add (SqliteParameter param)
 145                 {
 146                         Add ((object)param);
 147                         return param;
 148                 }
 149
 150                 public SqliteParameter Add (string name, object value)
 151                 {
 152                         return Add (new SqliteParameter (name, value));
 153                 }
 154
 155                 public SqliteParameter Add (string name, DbType type)
 156                 {
 157                         return Add (new SqliteParameter (name, type));
 158                 }
 159
 160                 public void Clear ()
 161                 {
 162                         numeric_param_list.Clear ();
 163                         named_param_hash.Clear ();
 164                 }
 165
 166                 public void CopyTo (Array array, int index)
 167                 {
 168                         throw new NotImplementedException ();
 169                 }
 170
 171                 bool IList.Contains (object value)
 172                 {
 173                         return Contains ((SqliteParameter) value);
 174                 }
 175
 176                 public bool Contains (string parameterName)
 177                 {
 178                         return named_param_hash.Contains (parameterName);
 179                 }
 180
 181                 public bool Contains (SqliteParameter param)
 182                 {
 183                         return Contains (param.ParameterName);
 184                 }
 185
 186                 public IEnumerator GetEnumerator ()
 187                 {
 188                         throw new NotImplementedException ();
 189                 }
 190
 191                 int IList.IndexOf (object param)
 192                 {
 193                         return IndexOf ((SqliteParameter) param);
 194                 }
 195
 196                 public int IndexOf (string parameterName)
 197                 {
 198                         return (int) named_param_hash[parameterName];
 199                 }
 200
 201                 public int IndexOf (SqliteParameter param)
 202                 {
 203                         return IndexOf (param.ParameterName);
 204                 }
 205
 206                 public void Insert (int index, object value)
 207                 {
 208                         CheckSqliteParam (value);
 209                         if (numeric_param_list.Count == index) {
 210                                 Add (value);
 211                                 return;
 212                         }
 213
 214                         numeric_param_list.Insert (index, value);
 215                         RecreateNamedHash ();
 216                 }
 217
 218                 public void Remove (object value)
 219                 {
 220                         CheckSqliteParam (value);
 221                         RemoveAt ((SqliteParameter) value);
 222                 }
 223
 224                 public void RemoveAt (int index)
 225                 {
 226                         RemoveAt (((SqliteParameter) numeric_param_list[index]).ParameterName);
 227                 }
 228
 229                 public void RemoveAt (string parameterName)
 230                 {
 231                         if (!named_param_hash.Contains (parameterName))
 232                                 throw new ApplicationException ("Parameter " + parameterName + " not found");
 233
 234                         numeric_param_list.RemoveAt ((int) named_param_hash[parameterName]);
 235                         named_param_hash.Remove (parameterName);
 236
 237                         RecreateNamedHash ();
 238                 }
 239
 240                 public void RemoveAt (SqliteParameter param)
 241                 {
 242                         RemoveAt (param.ParameterName);
 243                 }
 244
 245                 #endregion
 246         }
 247 }
 248