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                 }
  60
  61                 internal XmlSchemaCollection (XmlSchemaSet schemaSet)
  62                 {
  63                         this.schemaSet = schemaSet;
  64                 }
  65
  66                 //properties
  67                 internal XmlSchemaSet SchemaSet {
  68                         get { return schemaSet; }
  69                 }
  70
  71                 public int Count {
  72                         get { return schemaSet.Count; }
  73                 }
  74
  75                 public XmlNameTable NameTable {
  76                         get { return schemaSet.NameTable; }
  77                 }
  78
  79                 public XmlSchema this [ string ns ] {
  80                         get {
  81                                 ICollection col = schemaSet.Schemas (ns);
  82                                 if (col == null)
  83                                         return null;
  84                                 IEnumerator e = col.GetEnumerator ();
  85                                 if (e.MoveNext ())
  86                                         return (XmlSchema) e.Current;
  87                                 else
  88                                         return null;
  89                         }
  90                 }
  91
  92                 // Events
  93                 public event ValidationEventHandler ValidationEventHandler;
  94
  95                 // Methods
  96                 public XmlSchema Add (string ns, XmlReader reader)
  97                 {
  98                         return Add (ns, reader, new XmlUrlResolver ());
  99                 }
 100
 101 #if NET_1_1
 102                 public XmlSchema Add (string ns, XmlReader reader, XmlResolver resolver)
 103 #else
 104                 internal XmlSchema Add (string ns, XmlReader reader, XmlResolver resolver)
 105 #endif
 106                 {
 107                         XmlSchema schema = XmlSchema.Read (reader, ValidationEventHandler);
 108                         schema.Compile (ValidationEventHandler, schemaSet, resolver);
 109                         lock (schemaSet) {
 110                                 return schemaSet.Add (schema);
 111                         }
 112                 }
 113
 114                 public XmlSchema Add (string ns, string uri)
 115                 {
 116                         lock (schemaSet) {
 117                                 return schemaSet.Add (ns, uri);
 118                         }
 119                 }
 120
 121                 public XmlSchema Add (XmlSchema schema)
 122                 {
 123                         return Add (schema, new XmlUrlResolver ());
 124                 }
 125
 126                 public XmlSchema Add (XmlSchema schema, XmlResolver resolver)
 127                 {
 128                         if (schema == null)
 129                                 throw new ArgumentNullException ("schema");
 130
 131                         // XmlSchemaCollection.Add() compiles, while XmlSchemaSet.Add() does not
 132                         if (!schema.IsCompiled)
 133                                 schema.Compile (ValidationEventHandler, schemaSet, resolver);
 134                         // compilation error -> returns null (and don't add to the collection).
 135                         if (!schema.IsCompiled)
 136                                 return null;
 137
 138                         lock (schemaSet) {
 139                                 // consider imported schemas.
 140                                 schemaSet.Add (schema.Schemas);
 141                                 return schema;
 142                         }
 143                 }
 144
 145                 public void Add (XmlSchemaCollection schema)
 146                 {
 147                         if (schema == null)
 148                                 throw new ArgumentNullException ("schema");
 149
 150                         lock (schemaSet) {
 151                                 schemaSet.Add (schema.schemaSet);
 152                         }
 153                 }
 154
 155                 public bool Contains (string ns)
 156                 {
 157                         lock (schemaSet) {
 158                                 return schemaSet.Contains (ns);
 159                         }
 160                 }
 161
 162                 public bool Contains (XmlSchema schema)
 163                 {
 164                         lock (schemaSet) {
 165                                 return schemaSet.Contains (schema);
 166                         }
 167                 }
 168
 169                 public void CopyTo (XmlSchema[] array, int index)
 170                 {
 171                         lock (schemaSet) {
 172                                 schemaSet.CopyTo (array, index);
 173                         }
 174                 }
 175
 176                 public XmlSchemaCollectionEnumerator GetEnumerator ()
 177                 {
 178                         return new XmlSchemaCollectionEnumerator (this);
 179                 }
 180
 181                 // interface Methods
 182                 void ICollection.CopyTo (Array array, int index)
 183                 {
 184                         lock (schemaSet) {
 185                                 schemaSet.CopyTo (array, index);
 186                         }
 187                 }
 188
 189                 bool ICollection.IsSynchronized
 190                 {
 191                         get { return true; } // always
 192                 }
 193
 194                 IEnumerator IEnumerable.GetEnumerator ()
 195                 {
 196                         return this.GetEnumerator ();
 197                 }
 198
 199                 Object ICollection.SyncRoot
 200                 {
 201                         get { return this; }
 202                 }
 203
 204                 internal void OnValidationError (object o, ValidationEventArgs e)
 205                 {
 206                         if (ValidationEventHandler != null)
 207                                 ValidationEventHandler (o, e);
 208                         else if (e.Severity == XmlSeverityType.Error)
 209                                 throw e.Exception;
 210                 }
 211
 212         }
 213 }