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

   1 // Author: Dwivedi, Ajay kumar\r
   2 //            Adwiv@Yahoo.com\r
   3 using System;\r
   4 using System.Xml;\r
   5 using System.Xml.Serialization;\r
   6 \r
   7 namespace System.Xml.Schema\r
   8 {\r
   9         /// <summary>\r
  10         /// Summary description for XmlSchemaKeyref.\r
  11         /// </summary>\r
  12         public class XmlSchemaKeyref : XmlSchemaIdentityConstraint\r
  13         {\r
  14                 private XmlQualifiedName refer;\r
  15                 private static string xmlname = "keyref";\r
  16 \r
  17                 public XmlSchemaKeyref()\r
  18                 {\r
  19                         refer = XmlQualifiedName.Empty;\r
  20                 }\r
  21 \r
  22                 [System.Xml.Serialization.XmlAttribute("refer")]\r
  23                 public XmlQualifiedName Refer\r
  24                 {\r
  25                         get{ return  refer; } \r
  26                         set{ refer = value; }\r
  27                 }\r
  28                 /// <remarks>\r
  29                 /// 1. name must be present\r
  30                 /// 2. selector and field must be present\r
  31                 /// 3. refer must be present\r
  32                 /// </remarks>\r
  33                 [MonoTODO]\r
  34                 internal new int Compile(ValidationEventHandler h, XmlSchemaInfo info)\r
  35                 {\r
  36                         errorCount += base.Compile(h,info);\r
  37                         if(refer == null || refer.IsEmpty)\r
  38                                 error(h,"refer must be present");\r
  39                         else if(!XmlSchemaUtil.CheckQName(refer))\r
  40                                 error(h,"Refer is not a valid XmlQualifiedName");\r
  41 \r
  42                         return errorCount;\r
  43                 }\r
  44                 \r
  45                 [MonoTODO]\r
  46                 internal int Validate(ValidationEventHandler h)\r
  47                 {\r
  48                         return errorCount;\r
  49                 }\r
  50 \r
  51                 internal new void error(ValidationEventHandler handle, string message)\r
  52                 {\r
  53                         errorCount++;\r
  54                         ValidationHandler.RaiseValidationError(handle, this, message);\r
  55                 }\r
  56                 //<key \r
  57                 //  id = ID \r
  58                 //  name = NCName \r
  59                 //  refer = QName \r
  60                 //  {any attributes with non-schema namespace . . .}>\r
  61                 //  Content: (annotation?, (selector, field+))\r
  62                 //</key>\r
  63                 internal static XmlSchemaKeyref Read(XmlSchemaReader reader, ValidationEventHandler h)\r
  64                 {\r
  65                         XmlSchemaKeyref keyref = new XmlSchemaKeyref();\r
  66                         reader.MoveToElement();\r
  67 \r
  68                         if(reader.NamespaceURI != XmlSchema.Namespace || reader.LocalName != xmlname)\r
  69                         {\r
  70                                 error(h,"Should not happen :1: XmlSchemaKeyref.Read, name="+reader.Name,null);\r
  71                                 reader.Skip();\r
  72                                 return null;\r
  73                         }\r
  74 \r
  75                         keyref.LineNumber = reader.LineNumber;\r
  76                         keyref.LinePosition = reader.LinePosition;\r
  77                         keyref.SourceUri = reader.BaseURI;\r
  78 \r
  79                         while(reader.MoveToNextAttribute())\r
  80                         {\r
  81                                 if(reader.Name == "id")\r
  82                                 {\r
  83                                         keyref.Id = reader.Value;\r
  84                                 }\r
  85                                 else if(reader.Name == "name")\r
  86                                 {\r
  87                                         keyref.Name = reader.Value;\r
  88                                 }\r
  89                                 else if(reader.Name == "refer")\r
  90                                 {\r
  91                                         Exception innerex;\r
  92                                         keyref.refer = XmlSchemaUtil.ReadQNameAttribute(reader,out innerex);\r
  93                                         if(innerex != null)\r
  94                                                 error(h, reader.Value + " is not a valid value for refer attribute",innerex);\r
  95                                 }\r
  96                                 else if((reader.NamespaceURI == "" && reader.Name != "xmlns") || reader.NamespaceURI == XmlSchema.Namespace)\r
  97                                 {\r
  98                                         error(h,reader.Name + " is not a valid attribute for keyref",null);\r
  99                                 }\r
 100                                 else\r
 101                                 {\r
 102                                         XmlSchemaUtil.ReadUnhandledAttribute(reader,keyref);\r
 103                                 }\r
 104                         }\r
 105                         \r
 106                         reader.MoveToElement();\r
 107                         if(reader.IsEmptyElement)\r
 108                                 return keyref;\r
 109 \r
 110                         //  Content: annotation?, selector, field+\r
 111                         int level = 1;\r
 112                         while(reader.ReadNextElement())\r
 113                         {\r
 114                                 if(reader.NodeType == XmlNodeType.EndElement)\r
 115                                 {\r
 116                                         if(reader.LocalName != xmlname)\r
 117                                                 error(h,"Should not happen :2: XmlSchemaKeyref.Read, name="+reader.Name,null);\r
 118                                         break;\r
 119                                 }\r
 120                                 if(level <= 1 && reader.LocalName == "annotation")\r
 121                                 {\r
 122                                         level = 2; //Only one annotation\r
 123                                         XmlSchemaAnnotation annotation = XmlSchemaAnnotation.Read(reader,h);\r
 124                                         if(annotation != null)\r
 125                                                 keyref.Annotation = annotation;\r
 126                                         continue;\r
 127                                 }\r
 128                                 if(level <= 2 && reader.LocalName == "selector")\r
 129                                 {\r
 130                                         level = 3;\r
 131                                         XmlSchemaXPath selector = XmlSchemaXPath.Read(reader,h,"selector");\r
 132                                         if(selector != null)\r
 133                                                 keyref.Selector = selector;\r
 134                                         continue;\r
 135                                 }\r
 136                                 if(level <= 3 && reader.LocalName == "field")\r
 137                                 {\r
 138                                         level = 3;\r
 139                                         if(keyref.Selector == null)\r
 140                                                 error(h,"selector must be defined before field declarations",null);\r
 141                                         XmlSchemaXPath field = XmlSchemaXPath.Read(reader,h,"field");\r
 142                                         if(field != null)\r
 143                                                 keyref.Fields.Add(field);\r
 144                                         continue;\r
 145                                 }\r
 146                                 reader.RaiseInvalidElementError();\r
 147                         }\r
 148                         return keyref;\r
 149                 }\r
 150         }\r
 151 }\r