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         public sealed class XmlSchemaCollection : ICollection, IEnumerable
  44         {
  45                 //private fields
  46                 private XmlSchemaSet schemaSet;
  47
  48                 public XmlSchemaCollection ()
  49                         : this (new NameTable ())
  50                 {
  51                 }
  52
  53                 public XmlSchemaCollection (XmlNameTable nameTable)
  54                         : this (new XmlSchemaSet (nameTable))
  55                 {
  56                         this.schemaSet.SchemaCollection = this;
  57                 }
  58
  59                 internal XmlSchemaCollection (XmlSchemaSet schemaSet)
  60                 {
  61                         this.schemaSet = schemaSet;
  62                 }
  63
  64                 //properties
  65                 internal XmlSchemaSet SchemaSet {
  66                         get { return schemaSet; }
  67                 }
  68
  69                 public int Count {
  70                         get { return schemaSet.Count; }
  71                 }
  72
  73                 public XmlNameTable NameTable {
  74                         get { return schemaSet.NameTable; }
  75                 }
  76
  77                 public XmlSchema this [ string ns ] {
  78                         get { return schemaSet.Get (ns); }
  79                 }
  80
  81                 // Events
  82                 public event ValidationEventHandler ValidationEventHandler;
  83
  84                 // Methods
  85                 public XmlSchema Add (string ns, XmlReader reader)
  86                 {
  87                         return Add (ns, reader, new XmlUrlResolver ());
  88                 }
  89
  90 #if NET_1_0
  91                 internal XmlSchema Add (string ns, XmlReader reader, XmlResolver resolver)
  92 #else
  93                 public XmlSchema Add (string ns, XmlReader reader, XmlResolver resolver)
  94 #endif
  95                 {
  96                         XmlSchema schema = XmlSchema.Read (reader, ValidationEventHandler);
  97                         schema.Compile (ValidationEventHandler, this, resolver);
  98                         lock (schemaSet) {
  99                                 return schemaSet.Add (schema);
 100                         }
 101                 }
 102
 103                 public XmlSchema Add (string ns, string uri)
 104                 {
 105                         lock (schemaSet) {
 106                                 return schemaSet.Add (ns, uri);
 107                         }
 108                 }
 109
 110                 public XmlSchema Add (XmlSchema schema)
 111                 {
 112                         return Add (schema, new XmlUrlResolver ());
 113                 }
 114
 115                 public XmlSchema Add (XmlSchema schema, XmlResolver resolver)
 116                 {
 117                         if (schema == null)
 118                                 throw new ArgumentNullException ("schema");
 119
 120                         // XmlSchemaCollection.Add() compiles, while XmlSchemaSet.Add() does not
 121                         if (!schema.IsCompiled)
 122                                 schema.Compile (ValidationEventHandler, this, resolver);
 123
 124                         string ns = GetSafeNs (schema.TargetNamespace);
 125                         lock (schemaSet) {
 126                                 if (schemaSet.Contains (ns))
 127                                         schemaSet.Remove (schemaSet.Get (ns));
 128                                 return schemaSet.Add (schema);
 129                         }
 130                 }
 131
 132                 private string GetSafeNs (string ns)
 133                 {
 134                         return ns != null ? ns : String.Empty;
 135                 }
 136
 137                 public void Add (XmlSchemaCollection schema)
 138                 {
 139                         if (schema == null)
 140                                 throw new ArgumentNullException ("schema");
 141
 142                         /*
 143                         foreach (XmlSchema s in schema) {
 144                                 string ns = GetSafeNs (s.TargetNamespace);
 145                                 lock (schemaSet) {
 146                                         if (schemaSet.Contains (ns))
 147                                                 schemaSet.Remove (schemaSet.Get (ns));
 148                                         schemaSet.Add (s);
 149                                 }
 150                         }
 151                         */
 152                         lock (schemaSet) {
 153                                 schemaSet.Add (schema.schemaSet);
 154                         }
 155                 }
 156
 157                 public bool Contains (string ns)
 158                 {
 159                         lock (schemaSet) {
 160                                 return schemaSet.Contains (ns);
 161                         }
 162                 }
 163
 164                 public bool Contains (XmlSchema schema)
 165                 {
 166                         lock (schemaSet) {
 167                                 return schemaSet.Contains (schema);
 168                         }
 169                 }
 170
 171                 public void CopyTo (XmlSchema[] array, int index)
 172                 {
 173                         lock (schemaSet) {
 174                                 schemaSet.CopyTo (array, index);
 175                         }
 176                 }
 177
 178                 public XmlSchemaCollectionEnumerator GetEnumerator ()
 179                 {
 180                         return new XmlSchemaCollectionEnumerator (this);
 181                 }
 182
 183                 // interface Methods
 184                 void ICollection.CopyTo (Array array, int index)
 185                 {
 186                         lock (schemaSet) {
 187                                 schemaSet.CopyTo (array, index);
 188                         }
 189                 }
 190
 191                 bool ICollection.IsSynchronized
 192                 {
 193                         get { return true; } // always
 194                 }
 195
 196                 IEnumerator IEnumerable.GetEnumerator ()
 197                 {
 198                         return schemaSet.GetEnumerator ();
 199                 }
 200
 201                 Object ICollection.SyncRoot
 202                 {
 203                         get { return this; }
 204                 }
 205
 206                 // Internal Methods
 207                 internal XmlSchemaAttribute FindAttribute (XmlQualifiedName qname)
 208                 {
 209                         return (XmlSchemaAttribute) schemaSet.GlobalAttributes [qname];
 210                 }
 211
 212                 internal XmlSchemaElement FindElement (XmlQualifiedName qname)
 213                 {
 214                         return (XmlSchemaElement) schemaSet.GlobalElements [qname];
 215                 }
 216
 217                 internal object FindSchemaType (XmlQualifiedName qname)
 218                 {
 219                         return schemaSet.GlobalTypes [qname];
 220                 }
 221
 222                 internal void OnValidationError (object o, ValidationEventArgs e)
 223                 {
 224                         if (ValidationEventHandler != null)
 225                                 ValidationEventHandler (o, e);
 226                         else if (e.Severity == XmlSeverityType.Error)
 227                                 throw e.Exception;
 228                 }
 229
 230         }
 231 }