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

   1 // Author: Dwivedi, Ajay kumar\r
   2 //            Adwiv@Yahoo.com\r
   3
   4 //
   5 // Permission is hereby granted, free of charge, to any person obtaining
   6 // a copy of this software and associated documentation files (the
   7 // "Software"), to deal in the Software without restriction, including
   8 // without limitation the rights to use, copy, modify, merge, publish,
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  10 // permit persons to whom the Software is furnished to do so, subject to
  11 // the following conditions:
  12 //
  13 // The above copyright notice and this permission notice shall be
  14 // included in all copies or substantial portions of the Software.
  15 //
  16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23 //
  24 using System;\r
  25 using System.Collections;\r
  26 using System.Xml;\r
  27 using System.Xml.Serialization;\r
  28 using Mono.Xml.Schema;\r
  29 \r
  30 namespace System.Xml.Schema\r
  31 {\r
  32         /// <summary>\r
  33         /// Summary description for XmlSchemaIdentityConstraint.\r
  34         /// </summary>\r
  35         public class XmlSchemaIdentityConstraint : XmlSchemaAnnotated\r
  36         {\r
  37                 private XmlSchemaObjectCollection fields;\r
  38                 private string name;\r
  39                 private XmlQualifiedName qName;\r
  40                 private XmlSchemaXPath selector;\r
  41 \r
  42                 private XsdIdentitySelector compiledSelector;\r
  43 //              ArrayList compiledFields;\r
  44 \r
  45                 public XmlSchemaIdentityConstraint()\r
  46                 {\r
  47                         fields = new XmlSchemaObjectCollection();\r
  48                         qName = XmlQualifiedName.Empty;\r
  49                 }\r
  50                 \r
  51                 [System.Xml.Serialization.XmlAttribute("name")]\r
  52                 public string Name \r
  53                 {\r
  54                         get{ return  name; } \r
  55                         set{ name = value; }\r
  56                 }\r
  57 \r
  58                 [XmlElement("selector",typeof(XmlSchemaXPath),Namespace=XmlSchema.Namespace)]\r
  59                 public XmlSchemaXPath Selector \r
  60                 {\r
  61                         get{ return  selector; } \r
  62                         set{ selector = value; }\r
  63                 }\r
  64 \r
  65                 [XmlElement("field",typeof(XmlSchemaXPath),Namespace=XmlSchema.Namespace)]\r
  66                 public XmlSchemaObjectCollection Fields \r
  67                 {\r
  68                         get{ return fields; }\r
  69                 }\r
  70                 \r
  71                 [XmlIgnore]\r
  72                 public XmlQualifiedName QualifiedName \r
  73                 {\r
  74                         get{ return  qName; }\r
  75                 }\r
  76 \r
  77                 internal XsdIdentitySelector CompiledSelector {\r
  78                         get { return compiledSelector; }\r
  79                 }\r
  80 \r
  81                 /// <remarks>\r
  82                 /// 1. name must be present\r
  83                 /// 2. selector and field must be present\r
  84                 /// </remarks>\r
  85                 internal override int Compile(ValidationEventHandler h, XmlSchema schema)\r
  86                 {\r
  87                         // If this is already compiled this time, simply skip.\r
  88                         if (this.IsComplied (schema.CompilationId))\r
  89                                 return 0;\r
  90 \r
  91 #if NET_2_0\r
  92                         if (Selector != null)\r
  93                                 Selector.Parent = this;\r
  94                         foreach (XmlSchemaObject obj in Fields)\r
  95                                 obj.Parent = this;\r
  96 #endif\r
  97 \r
  98                         if(Name == null)\r
  99                                 error(h,"Required attribute name must be present");\r
 100                         else if(!XmlSchemaUtil.CheckNCName(this.name)) \r
 101                                 error(h,"attribute name must be NCName");\r
 102                         else {\r
 103                                 this.qName = new XmlQualifiedName(Name,schema.TargetNamespace);\r
 104                                 if (schema.NamedIdentities.Contains (qName))\r
 105                                         error(h,"There is already same named identity constraint in this namespace.");\r
 106                                 else\r
 107                                         schema.NamedIdentities.Add (qName, this);\r
 108                         }\r
 109 \r
 110                         if(Selector == null)\r
 111                                 error(h,"selector must be present");\r
 112                         else\r
 113                         {\r
 114                                 Selector.isSelector = true;\r
 115                                 errorCount += Selector.Compile(h,schema);\r
 116                                 if (selector.errorCount == 0)\r
 117                                         compiledSelector = new XsdIdentitySelector (Selector);\r
 118                         }\r
 119                         if (errorCount > 0)\r
 120                                 return errorCount; // fatal\r
 121 \r
 122                         if(Fields.Count == 0)\r
 123                                 error(h,"atleast one field value must be present");\r
 124                         else\r
 125                         {\r
 126                                 for (int i = 0; i < Fields.Count; i++)\r
 127                                 {\r
 128                                         XmlSchemaXPath field = Fields [i] as XmlSchemaXPath;\r
 129                                         if(field != null)\r
 130                                         {\r
 131                                                 errorCount += field.Compile(h,schema);\r
 132                                                 if (field.errorCount == 0)\r
 133                                                         this.compiledSelector.AddField (new XsdIdentityField (field, i));\r
 134                                         }\r
 135                                         else\r
 136                                                 error (h, "Object of type " + Fields [i].GetType() + " is invalid in the Fields Collection");\r
 137                                 }\r
 138                         }\r
 139                         XmlSchemaUtil.CompileID(Id,this,schema.IDCollection,h);\r
 140 \r
 141                         this.CompilationId = schema.CompilationId;\r
 142                         return errorCount;\r
 143                 }\r
 144         }\r
 145 }\r