mcs/class/System.XML/Mono.Xml.Schema/XsdKeyTable.cs

   1 //
   2 // Mono.Xml.Schema.XsdKeyTable.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto (ginga@kit.hi-ho.ne.jp)
   6 //
   7 //      (C)2003 Atsushi Enomoto
   8 //
   9 using System;\r
  10 using System.Collections;\r
  11 using System.Collections.Specialized;\r
  12 using System.Xml;\r
  13 using System.Xml.Schema;\r
  14 \r
  15 namespace Mono.Xml.Schema\r
  16 {\r
  17         // Created per constraining element.\r
  18         public class XsdKeyTable\r
  19         {\r
  20                 private XsdIdentitySelector selector;\r
  21                 private XmlSchemaIdentityConstraint source;\r
  22                 private XmlQualifiedName qname;\r
  23                 private XmlQualifiedName refKeyName;\r
  24 \r
  25                 public ArrayList Entries = new ArrayList ();\r
  26                 public ArrayList FinishedEntries = new ArrayList ();\r
  27 \r
  28                 public int StartDepth;\r
  29                 public XsdKeyTable ReferencedKey;\r
  30 \r
  31                 public XsdKeyTable (XmlSchemaIdentityConstraint source, XmlReader reader)\r
  32                 {\r
  33                         Reset (source, reader);\r
  34                 }\r
  35 \r
  36                 public XmlQualifiedName QualifiedName {\r
  37                         get { return qname; }\r
  38                 }\r
  39 \r
  40                 public XmlQualifiedName RefKeyName {\r
  41                         get { return refKeyName; }\r
  42                 }\r
  43 \r
  44                 public XmlSchemaIdentityConstraint SourceSchemaIdentity {\r
  45                         get { return source; }\r
  46                 }\r
  47 \r
  48                 public XsdIdentitySelector Selector {\r
  49                         get { return selector; }\r
  50                 }\r
  51 \r
  52                 public void Reset (XmlSchemaIdentityConstraint source, XmlReader reader)\r
  53                 {\r
  54                         this.source = source;\r
  55                         this.selector = source.CompiledSelector;\r
  56                         this.qname = source.QualifiedName;\r
  57                         XmlSchemaKeyref kr = source as XmlSchemaKeyref;\r
  58                         if (kr != null)\r
  59                                 this.refKeyName = kr.Refer;\r
  60                         StartDepth = 0;\r
  61                 }\r
  62 \r
  63                 // In this method, attributes are ignored.\r
  64                 public XsdIdentityPath SelectorMatches (ArrayList qnameStack, XmlReader reader)\r
  65                 {\r
  66                         foreach (XsdIdentityPath path in Selector.Paths) {\r
  67                                 // Only "." hits.\r
  68                                 if (reader.Depth == this.StartDepth) {\r
  69                                         if (path.OrderedSteps.Length == 0)\r
  70                                                 return path;\r
  71                                         else\r
  72                                                 continue;\r
  73                                 }\r
  74                                 // It does not hit as yet (too shallow to hit).\r
  75                                 if (reader.Depth - this.StartDepth < path.OrderedSteps.Length - 1)\r
  76                                         continue;\r
  77 \r
  78                                 int iter = path.OrderedSteps.Length;\r
  79                                 if (path.OrderedSteps [iter-1].IsAttribute)\r
  80                                         iter--;\r
  81 \r
  82                                 if (path.Descendants && reader.Depth < this.StartDepth + iter)\r
  83                                         continue;\r
  84                                 else if (!path.Descendants && reader.Depth != this.StartDepth + iter)\r
  85                                         continue;\r
  86 \r
  87                                 iter--;\r
  88 \r
  89                                 XsdIdentityStep step;\r
  90                                 for (int x = 0; x <= iter; x++, iter--) {\r
  91                                         step = path.OrderedSteps [iter - x];\r
  92                                         if (step.IsAnyName)\r
  93                                                 continue;\r
  94                                         XmlQualifiedName qname = (XmlQualifiedName) qnameStack [qnameStack.Count - x - 1];\r
  95                                         if (step.NsName != null && qname.Namespace == step.NsName)\r
  96                                                 continue;\r
  97                                         if (step.Name == qname.Name && step.Namespace == qname.Namespace)\r
  98                                                 continue;\r
  99                                         else\r
 100                                                 break;\r
 101                                 }\r
 102                                 if (iter >= 0)  // i.e. did not match against the path.\r
 103                                         continue;\r
 104                                 return path;\r
 105                         }\r
 106                         return null;\r
 107                 }\r
 108         }\r
 109 }\r