mcs/class/System.XML/System.Xml.Schema/XmlSchemaCollection.cs

   1 //
   2 // System.Xml.Schema.XmlSchemaCollection.cs
   3 //
   4 // Authors:
   5 //      Dwivedi, Ajay kumar  Adwiv@Yahoo.com
   6 //      Atsushi Enomoto      ginga@kit.hi-ho.ne.jp
   7 //
   8
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29 using System;
  30 using System.Collections;
  31 using System.Xml;
  32
  33
  34 namespace System.Xml.Schema
  35 {
  36         /// <summary>
  37         /// Summary description for XmlSchemaCollection.
  38         ///
  39         /// It is just a wrapper for XmlSchemaSet (unlike MS.NET, our
  40         /// XmlSchemaCollection is originally designed to be conformant to
  41         /// W3C specification).
  42         /// </summary>
  43 #if NET_2_0
  44         [Obsolete ("Use XmlSchemaSet.")]
  45 #endif
  46         public sealed class XmlSchemaCollection : ICollection, IEnumerable
  47         {
  48                 //private fields
  49                 private XmlSchemaSet schemaSet;
  50
  51                 public XmlSchemaCollection ()
  52                         : this (new NameTable ())
  53                 {
  54                 }
  55
  56                 public XmlSchemaCollection (XmlNameTable nametable)
  57                         : this (new XmlSchemaSet (nametable))
  58                 {
  59                         schemaSet.ValidationEventHandler += new ValidationEventHandler (OnValidationError);
  60                 }
  61
  62                 internal XmlSchemaCollection (XmlSchemaSet schemaSet)
  63                 {
  64                         this.schemaSet = schemaSet;
  65                 }
  66
  67                 //properties
  68                 internal XmlSchemaSet SchemaSet {
  69                         get { return schemaSet; }
  70                 }
  71
  72                 public int Count {
  73                         get { return schemaSet.Count; }
  74                 }
  75
  76                 public XmlNameTable NameTable {
  77                         get { return schemaSet.NameTable; }
  78                 }
  79
  80                 public XmlSchema this [ string ns ] {
  81                         get {
  82                                 ICollection col = schemaSet.Schemas (ns);
  83                                 if (col == null)
  84                                         return null;
  85                                 IEnumerator e = col.GetEnumerator ();
  86                                 if (e.MoveNext ())
  87                                         return (XmlSchema) e.Current;
  88                                 else
  89                                         return null;
  90                         }
  91                 }
  92
  93                 // Events
  94                 public event ValidationEventHandler ValidationEventHandler;
  95
  96                 // Methods
  97                 public XmlSchema Add (string ns, XmlReader reader)
  98                 {
  99                         return Add (ns, reader, new XmlUrlResolver ());
 100                 }
 101
 102                 public XmlSchema Add (string ns, XmlReader reader, XmlResolver resolver)
 103                 {
 104                         XmlSchema schema = XmlSchema.Read (reader, ValidationEventHandler);
 105                         if (schema.TargetNamespace == null)
 106                                 schema.TargetNamespace = ns;
 107                         else if (ns != null && schema.TargetNamespace != ns)
 108                                 throw new XmlSchemaException ("The actual targetNamespace in the schema does not match the parameter.");
 109
 110                         return Add (schema);
 111                 }
 112
 113                 public XmlSchema Add (string ns, string uri)
 114                 {
 115                         XmlReader reader = new XmlTextReader (uri);
 116                         try {
 117                                 return Add (ns, reader);
 118                         } finally {
 119                                 reader.Close ();
 120                         }
 121                 }
 122
 123                 public XmlSchema Add (XmlSchema schema)
 124                 {
 125                         return Add (schema, new XmlUrlResolver ());
 126                 }
 127
 128                 public XmlSchema Add (XmlSchema schema, XmlResolver resolver)
 129                 {
 130                         if (schema == null)
 131                                 throw new ArgumentNullException ("schema");
 132
 133                         XmlSchemaSet xss = new XmlSchemaSet (schemaSet.NameTable);
 134                         xss.Add (schemaSet);
 135
 136                         // FIXME: maybe it requires Reprocess()
 137                         xss.Add (schema);
 138                         xss.ValidationEventHandler += ValidationEventHandler;
 139                         xss.XmlResolver = resolver;
 140                         xss.Compile ();
 141                         if (!xss.IsCompiled)
 142                                 return null;
 143                         // It is set only when the compilation was successful.
 144                         schemaSet = xss;
 145                         return schema;
 146                 }
 147
 148                 public void Add (XmlSchemaCollection schema)
 149                 {
 150                         if (schema == null)
 151                                 throw new ArgumentNullException ("schema");
 152
 153                         XmlSchemaSet xss = new XmlSchemaSet (schemaSet.NameTable);
 154                         xss.Add (schemaSet);
 155
 156                         // FIXME: maybe it requires Reprocess()
 157                         xss.Add (schema.schemaSet);
 158                         xss.ValidationEventHandler += ValidationEventHandler;
 159                         xss.XmlResolver = schemaSet.XmlResolver;
 160                         xss.Compile ();
 161                         if (!xss.IsCompiled)
 162                                 return;
 163                         // It is set only when the compilation was successful.
 164                         schemaSet = xss;
 165                 }
 166
 167                 public bool Contains (string ns)
 168                 {
 169                         lock (schemaSet) {
 170                                 return schemaSet.Contains (ns);
 171                         }
 172                 }
 173
 174                 public bool Contains (XmlSchema schema)
 175                 {
 176                         lock (schemaSet) {
 177                                 return schemaSet.Contains (schema);
 178                         }
 179                 }
 180
 181                 public void CopyTo (XmlSchema[] array, int index)
 182                 {
 183                         lock (schemaSet) {
 184                                 schemaSet.CopyTo (array, index);
 185                         }
 186                 }
 187
 188                 public XmlSchemaCollectionEnumerator GetEnumerator ()
 189                 {
 190                         // The actual collection is schemaSet.Schemas()
 191                         return new XmlSchemaCollectionEnumerator(schemaSet.Schemas());
 192                 }
 193
 194                 int ICollection.Count {
 195                         get { return Count; }
 196                 }
 197
 198                 // interface Methods
 199                 void ICollection.CopyTo (Array array, int index)
 200                 {
 201                         lock (schemaSet) {
 202                                 schemaSet.CopyTo (array, index);
 203                         }
 204                 }
 205
 206                 bool ICollection.IsSynchronized
 207                 {
 208                         get { return true; } // always
 209                 }
 210
 211                 IEnumerator IEnumerable.GetEnumerator ()
 212                 {
 213                         return this.GetEnumerator ();
 214                 }
 215
 216                 Object ICollection.SyncRoot
 217                 {
 218                         get { return this; }
 219                 }
 220
 221                 void OnValidationError (object o, ValidationEventArgs e)
 222                 {
 223                         if (ValidationEventHandler != null)
 224                                 ValidationEventHandler (o, e);
 225                         else if (e.Severity == XmlSeverityType.Error)
 226                                 throw e.Exception;
 227                 }
 228
 229         }
 230 }