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                 }
  57
  58                 internal XmlSchemaCollection (XmlSchemaSet schemaSet)
  59                 {
  60                         this.schemaSet = schemaSet;
  61                 }
  62
  63                 //properties
  64                 internal XmlSchemaSet SchemaSet {
  65                         get { return schemaSet; }
  66                 }
  67
  68                 public int Count {
  69                         get { return schemaSet.Count; }
  70                 }
  71
  72                 public XmlNameTable NameTable {
  73                         get { return schemaSet.NameTable; }
  74                 }
  75
  76                 public XmlSchema this [ string ns ] {
  77                         get {
  78                                 ICollection col = schemaSet.Schemas (ns);
  79                                 if (col == null)
  80                                         return null;
  81                                 IEnumerator e = col.GetEnumerator ();
  82                                 if (e.MoveNext ())
  83                                         return (XmlSchema) e.Current;
  84                                 else
  85                                         return null;
  86                         }
  87                 }
  88
  89                 // Events
  90                 public event ValidationEventHandler ValidationEventHandler;
  91
  92                 // Methods
  93                 public XmlSchema Add (string ns, XmlReader reader)
  94                 {
  95                         return Add (ns, reader, new XmlUrlResolver ());
  96                 }
  97
  98 #if NET_1_1
  99                 public XmlSchema Add (string ns, XmlReader reader, XmlResolver resolver)
 100 #else
 101                 internal XmlSchema Add (string ns, XmlReader reader, XmlResolver resolver)
 102 #endif
 103                 {
 104                         XmlSchema schema = XmlSchema.Read (reader, ValidationEventHandler);
 105                         schema.Compile (ValidationEventHandler, schemaSet, resolver);
 106                         lock (schemaSet) {
 107                                 return schemaSet.Add (schema);
 108                         }
 109                 }
 110
 111                 public XmlSchema Add (string ns, string uri)
 112                 {
 113                         lock (schemaSet) {
 114                                 return schemaSet.Add (ns, uri);
 115                         }
 116                 }
 117
 118                 public XmlSchema Add (XmlSchema schema)
 119                 {
 120                         return Add (schema, new XmlUrlResolver ());
 121                 }
 122
 123                 public XmlSchema Add (XmlSchema schema, XmlResolver resolver)
 124                 {
 125                         if (schema == null)
 126                                 throw new ArgumentNullException ("schema");
 127
 128                         // XmlSchemaCollection.Add() compiles, while XmlSchemaSet.Add() does not
 129                         if (!schema.IsCompiled)
 130                                 schema.Compile (ValidationEventHandler, schemaSet, resolver);
 131                         // compilation error -> returns null (and don't add to the collection).
 132                         if (!schema.IsCompiled)
 133                                 return null;
 134
 135                         string ns = GetSafeNs (schema.TargetNamespace);
 136                         lock (schemaSet) {
 137                                 // consider imported schemas.
 138                                 schemaSet.Add (schema.Schemas);
 139                                 return schema;
 140                         }
 141                 }
 142
 143                 private string GetSafeNs (string ns)
 144                 {
 145                         return ns != null ? ns : String.Empty;
 146                 }
 147
 148                 public void Add (XmlSchemaCollection schema)
 149                 {
 150                         if (schema == null)
 151                                 throw new ArgumentNullException ("schema");
 152
 153                         lock (schemaSet) {
 154                                 schemaSet.Add (schema.schemaSet);
 155                         }
 156                 }
 157
 158                 public bool Contains (string ns)
 159                 {
 160                         lock (schemaSet) {
 161                                 return schemaSet.Contains (ns);
 162                         }
 163                 }
 164
 165                 public bool Contains (XmlSchema schema)
 166                 {
 167                         lock (schemaSet) {
 168                                 return schemaSet.Contains (schema);
 169                         }
 170                 }
 171
 172                 public void CopyTo (XmlSchema[] array, int index)
 173                 {
 174                         lock (schemaSet) {
 175                                 schemaSet.CopyTo (array, index);
 176                         }
 177                 }
 178
 179                 public XmlSchemaCollectionEnumerator GetEnumerator ()
 180                 {
 181                         return new XmlSchemaCollectionEnumerator (this);
 182                 }
 183
 184                 // interface Methods
 185                 void ICollection.CopyTo (Array array, int index)
 186                 {
 187                         lock (schemaSet) {
 188                                 schemaSet.CopyTo (array, index);
 189                         }
 190                 }
 191
 192                 bool ICollection.IsSynchronized
 193                 {
 194                         get { return true; } // always
 195                 }
 196
 197                 IEnumerator IEnumerable.GetEnumerator ()
 198                 {
 199                         return this.GetEnumerator ();
 200                 }
 201
 202                 Object ICollection.SyncRoot
 203                 {
 204                         get { return this; }
 205                 }
 206
 207                 internal void OnValidationError (object o, ValidationEventArgs e)
 208                 {
 209                         if (ValidationEventHandler != null)
 210                                 ValidationEventHandler (o, e);
 211                         else if (e.Severity == XmlSeverityType.Error)
 212                                 throw e.Exception;
 213                 }
 214
 215         }
 216 }