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
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30 using System;\r
  31 using System.Collections;\r
  32 using System.Collections.Specialized;\r
  33 using System.Xml;\r
  34 using System.Xml.Schema;\r
  35 \r
  36 namespace Mono.Xml.Schema\r
  37 {\r
  38         internal class XsdKeyEntryCollection : CollectionBase\r
  39         {\r
  40                 public void Add (XsdKeyEntry entry)\r
  41                 {\r
  42                         List.Add (entry);\r
  43                 }\r
  44 \r
  45                 public XsdKeyEntry this [int i] {\r
  46                         get { return (XsdKeyEntry) List [i]; }\r
  47                         set { List [i] = value; }\r
  48                 }\r
  49         }\r
  50 \r
  51         // Created per constraining element.\r
  52         internal class XsdKeyTable\r
  53         {\r
  54                 // FIXME: no need after #70419\r
  55                 public readonly bool alwaysTrue = true;\r
  56 \r
  57                 private XsdIdentitySelector selector;\r
  58                 private XmlSchemaIdentityConstraint source;\r
  59                 private XmlQualifiedName qname;\r
  60                 private XmlQualifiedName refKeyName;\r
  61 \r
  62                 public XsdKeyEntryCollection Entries =\r
  63                         new XsdKeyEntryCollection ();\r
  64                 public XsdKeyEntryCollection FinishedEntries =\r
  65                         new XsdKeyEntryCollection ();\r
  66 \r
  67                 public int StartDepth;\r
  68                 public XsdKeyTable ReferencedKey;\r
  69 \r
  70                 public XsdKeyTable (XmlSchemaIdentityConstraint source, XmlReader reader)\r
  71                 {\r
  72                         Reset (source, reader);\r
  73                 }\r
  74 \r
  75                 public XmlQualifiedName QualifiedName {\r
  76                         get { return qname; }\r
  77                 }\r
  78 \r
  79                 public XmlQualifiedName RefKeyName {\r
  80                         get { return refKeyName; }\r
  81                 }\r
  82 \r
  83                 public XmlSchemaIdentityConstraint SourceSchemaIdentity {\r
  84                         get { return source; }\r
  85                 }\r
  86 \r
  87                 public XsdIdentitySelector Selector {\r
  88                         get { return selector; }\r
  89                 }\r
  90 \r
  91                 public void Reset (XmlSchemaIdentityConstraint source, XmlReader reader)\r
  92                 {\r
  93                         this.source = source;\r
  94                         this.selector = source.CompiledSelector;\r
  95                         this.qname = source.QualifiedName;\r
  96                         XmlSchemaKeyref kr = source as XmlSchemaKeyref;\r
  97                         if (kr != null)\r
  98                                 this.refKeyName = kr.Refer;\r
  99                         StartDepth = 0;\r
 100                 }\r
 101 \r
 102                 // In this method, attributes are ignored.\r
 103                 public XsdIdentityPath SelectorMatches (ArrayList qnameStack, XmlReader reader)\r
 104                 {\r
 105                         for (int i = 0; i < Selector.Paths.Length; i++) {\r
 106                                 XsdIdentityPath path = Selector.Paths [i];\r
 107                                 // Only "." hits.\r
 108                                 if (reader.Depth == this.StartDepth) {\r
 109                                         if (path.OrderedSteps.Length == 0)\r
 110                                                 return path;\r
 111                                         else\r
 112                                                 continue;\r
 113                                 }\r
 114                                 // It does not hit as yet (too shallow to hit).\r
 115                                 if (reader.Depth - this.StartDepth < path.OrderedSteps.Length - 1)\r
 116                                         continue;\r
 117 \r
 118                                 int iter = path.OrderedSteps.Length;\r
 119                                 if (path.OrderedSteps [iter-1].IsAttribute)\r
 120                                         iter--;\r
 121 \r
 122                                 if (path.Descendants && reader.Depth < this.StartDepth + iter)\r
 123                                         continue;\r
 124                                 else if (!path.Descendants && reader.Depth != this.StartDepth + iter)\r
 125                                         continue;\r
 126 \r
 127                                 iter--;\r
 128 \r
 129                                 XsdIdentityStep step;\r
 130                                 for (int x = 0; 0 <= iter; x++, iter--) {\r
 131                                         step = path.OrderedSteps [iter];\r
 132                                         if (step.IsAnyName)\r
 133                                                 continue;\r
 134                                         XmlQualifiedName qname = (XmlQualifiedName) qnameStack [qnameStack.Count - x - 1];\r
 135                                         if (step.NsName != null && qname.Namespace == step.NsName)\r
 136                                                 continue;\r
 137                                         if (step.Name == qname.Name && step.Namespace == qname.Namespace)\r
 138                                                 continue;\r
 139                                         if (alwaysTrue)\r
 140                                                 break;\r
 141                                 }\r
 142                                 if (iter >= 0)  // i.e. did not match against the path.\r
 143                                         continue;\r
 144                                 return path;\r
 145                         }\r
 146                         return null;\r
 147                 }\r
 148         }\r
 149 }\r