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

   1 //\r
   2 // System.Xml.Schema.XmlSchemaGroup.cs\r
   3 //\r
   4 // Author:\r
   5 //      Dwivedi, Ajay kumar  Adwiv@Yahoo.com\r
   6 //      Atsushi Enomoto  ginga@kit.hi-ho.ne.jp\r
   7 //\r
   8 using System;\r
   9 using System.Collections;\r
  10 using System.Xml.Serialization;\r
  11 using System.Xml;\r
  12 \r
  13 namespace System.Xml.Schema\r
  14 {\r
  15         /// <summary>\r
  16         /// refers to the named group\r
  17         /// </summary>\r
  18         public class XmlSchemaGroup : XmlSchemaAnnotated\r
  19         {\r
  20                 private string name;\r
  21                 private XmlSchemaGroupBase particle;\r
  22                 private XmlQualifiedName qualifiedName;\r
  23                 private bool isCircularDefinition;\r
  24                 \r
  25                 private static string xmlname = "group";\r
  26 \r
  27                 public XmlSchemaGroup()\r
  28                 {\r
  29                 }\r
  30 \r
  31                 [System.Xml.Serialization.XmlAttribute("name")]\r
  32                 public string Name \r
  33                 {\r
  34                         get{ return  name; } \r
  35                         set{ name = value; }\r
  36                 }\r
  37 \r
  38                 [XmlElement("all",typeof(XmlSchemaAll),Namespace=XmlSchema.Namespace)]\r
  39                 [XmlElement("choice",typeof(XmlSchemaChoice),Namespace=XmlSchema.Namespace)]\r
  40                 [XmlElement("sequence",typeof(XmlSchemaSequence),Namespace=XmlSchema.Namespace)]\r
  41                 public XmlSchemaGroupBase Particle\r
  42                 {\r
  43                         get{ return  particle; }\r
  44                         set{ particle = value; }\r
  45                 }\r
  46 \r
  47                 [XmlIgnore]\r
  48                 internal XmlQualifiedName QualifiedName \r
  49                 {\r
  50                         get{ return qualifiedName;}\r
  51                 }\r
  52 \r
  53                 internal bool IsCircularDefinition\r
  54                 {\r
  55                         get { return isCircularDefinition; }\r
  56                 }\r
  57 \r
  58                 // 1. name must be present\r
  59                 // 2. MinOccurs & MaxOccurs of the Particle must be absent\r
  60                 [MonoTODO]\r
  61                 internal override int Compile(ValidationEventHandler h, XmlSchema schema)\r
  62                 {\r
  63                         // If this is already compiled this time, simply skip.\r
  64                         if (this.IsComplied (schema.CompilationId))\r
  65                                 return 0;\r
  66 \r
  67                         if(Name == null)\r
  68                                 error(h,"Required attribute name must be present");\r
  69                         else if(!XmlSchemaUtil.CheckNCName(this.name)) \r
  70                                 error(h,"attribute name must be NCName");\r
  71                         else\r
  72                                 qualifiedName = new XmlQualifiedName(Name,schema.TargetNamespace);\r
  73 \r
  74                         if(Particle == null)\r
  75                         {\r
  76                                 error(h,"Particle is required");\r
  77                         }\r
  78                         else \r
  79                         {\r
  80                                 if(Particle.MaxOccursString != null)\r
  81                                         Particle.error(h,"MaxOccurs must not be present when the Particle is a child of Group");\r
  82                                 if(Particle.MinOccursString != null)\r
  83                                         Particle.error(h,"MinOccurs must not be present when the Particle is a child of Group");\r
  84                         \r
  85                                 if(Particle is XmlSchemaChoice)\r
  86                                 {\r
  87                                         errorCount += ((XmlSchemaChoice)Particle).Compile(h,schema);\r
  88                                 }\r
  89                                 else if(Particle is XmlSchemaSequence)\r
  90                                 {\r
  91                                         errorCount += ((XmlSchemaSequence)Particle).Compile(h,schema);\r
  92                                 }\r
  93                                 else if(Particle is XmlSchemaAll)\r
  94                                 {\r
  95                                         errorCount += ((XmlSchemaAll)Particle).Compile(h,schema);\r
  96                                 }\r
  97                                 else\r
  98                                 {\r
  99                                         error(h,"only all,choice or sequence are allowed");\r
 100                                 }\r
 101                         }\r
 102                         \r
 103                         XmlSchemaUtil.CompileID(Id,this,schema.IDCollection,h);\r
 104 \r
 105                         this.CompilationId = schema.CompilationId;\r
 106                         return errorCount;\r
 107                 }\r
 108                 \r
 109                 [MonoTODO]\r
 110                 internal override int Validate(ValidationEventHandler h, XmlSchema schema)\r
 111                 {\r
 112                         if (this.IsValidated (schema.ValidationId))\r
 113                                 return errorCount;\r
 114 \r
 115                         // 3.8.6 Model Group Correct :: 2. Circular group disallowed.\r
 116                         if (Particle != null) { // in case of invalid schema.\r
 117                                 Particle.parentIsGroupDefinition = true;\r
 118 \r
 119                                 try {\r
 120                                         Particle.CheckRecursion (0, h, schema);\r
 121                                 } catch (XmlSchemaException ex) {\r
 122                                         error (h, ex.Message, ex);\r
 123                                         this.isCircularDefinition = true;\r
 124                                         return errorCount;\r
 125                                 }\r
 126                                 errorCount += Particle.Validate (h,schema);\r
 127 \r
 128                                 Particle.ValidateUniqueParticleAttribution (new XmlSchemaObjectTable (),\r
 129                                         new ArrayList (), h, schema);\r
 130                                 Particle.ValidateUniqueTypeAttribution (\r
 131                                         new XmlSchemaObjectTable (), h, schema);\r
 132                         }\r
 133 \r
 134                         this.ValidationId = schema.ValidationId;\r
 135                         return errorCount;\r
 136                 }\r
 137 \r
 138                 //From the Errata\r
 139                 //<group \r
 140                 //  id = ID\r
 141                 //  name = NCName\r
 142                 //  {any attributes with non-schema namespace . . .}>\r
 143                 //  Content: (annotation?, (all | choice | sequence)?)\r
 144                 //</group>\r
 145                 internal static XmlSchemaGroup Read(XmlSchemaReader reader, ValidationEventHandler h)\r
 146                 {\r
 147                         XmlSchemaGroup group = new XmlSchemaGroup();\r
 148                         reader.MoveToElement();\r
 149 \r
 150                         if(reader.NamespaceURI != XmlSchema.Namespace || reader.LocalName != xmlname)\r
 151                         {\r
 152                                 error(h,"Should not happen :1: XmlSchemaGroup.Read, name="+reader.Name,null);\r
 153                                 reader.Skip();\r
 154                                 return null;\r
 155                         }\r
 156 \r
 157                         group.LineNumber = reader.LineNumber;\r
 158                         group.LinePosition = reader.LinePosition;\r
 159                         group.SourceUri = reader.BaseURI;\r
 160 \r
 161                         while(reader.MoveToNextAttribute())\r
 162                         {\r
 163                                 if(reader.Name == "id")\r
 164                                 {\r
 165                                         group.Id = reader.Value;\r
 166                                 }\r
 167                                 else if(reader.Name == "name")\r
 168                                 {\r
 169                                         group.name = reader.Value;\r
 170                                 }\r
 171                                 else if((reader.NamespaceURI == "" && reader.Name != "xmlns") || reader.NamespaceURI == XmlSchema.Namespace)\r
 172                                 {\r
 173                                         error(h,reader.Name + " is not a valid attribute for group",null);\r
 174                                 }\r
 175                                 else\r
 176                                 {\r
 177                                         XmlSchemaUtil.ReadUnhandledAttribute(reader,group);\r
 178                                 }\r
 179                         }\r
 180                         \r
 181                         reader.MoveToElement();\r
 182                         if(reader.IsEmptyElement)\r
 183                                 return group;\r
 184 \r
 185 //                       Content: (annotation?, (all | choice | sequence)?)\r
 186                         int level = 1;\r
 187                         while(reader.ReadNextElement())\r
 188                         {\r
 189                                 if(reader.NodeType == XmlNodeType.EndElement)\r
 190                                 {\r
 191                                         if(reader.LocalName != xmlname)\r
 192                                                 error(h,"Should not happen :2: XmlSchemaGroup.Read, name="+reader.Name,null);\r
 193                                         break;\r
 194                                 }\r
 195                                 if(level <= 1 && reader.LocalName == "annotation")\r
 196                                 {\r
 197                                         level = 2; //Only one annotation\r
 198                                         XmlSchemaAnnotation annotation = XmlSchemaAnnotation.Read(reader,h);\r
 199                                         if(annotation != null)\r
 200                                                 group.Annotation = annotation;\r
 201                                         continue;\r
 202                                 }\r
 203                                 if(level <= 2)\r
 204                                 {\r
 205                                         if(reader.LocalName == "all")\r
 206                                         {\r
 207                                                 level = 3;\r
 208                                                 XmlSchemaAll all = XmlSchemaAll.Read(reader,h);\r
 209                                                 if(all != null)\r
 210                                                         group.Particle = all;\r
 211                                                 continue;\r
 212                                         }\r
 213                                         if(reader.LocalName == "choice")\r
 214                                         {\r
 215                                                 level = 3;\r
 216                                                 XmlSchemaChoice choice = XmlSchemaChoice.Read(reader,h);\r
 217                                                 if(choice != null)\r
 218                                                         group.Particle = choice;\r
 219                                                 continue;\r
 220                                         }\r
 221                                         if(reader.LocalName == "sequence")\r
 222                                         {\r
 223                                                 level = 3;\r
 224                                                 XmlSchemaSequence sequence = XmlSchemaSequence.Read(reader,h);\r
 225                                                 if(sequence != null)\r
 226                                                         group.Particle = sequence;\r
 227                                                 continue;\r
 228                                         }\r
 229                                 }\r
 230                                 reader.RaiseInvalidElementError();\r
 231                         }\r
 232                         return group;\r
 233                 }\r
 234         }\r
 235 }\r