mcs/class/System.XML/Mono.Xml.XPath/KeyPattern.cs

   1 //
   2 // Mono.Xml.XPath.KeyPattern
   3 //
   4 // Author:
   5 //      Ben Maurer (bmaurer@users.sourceforge.net)
   6 //
   7 // (C) 2003 Ben Maurer
   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
  31 using System;
  32 using System.Collections;
  33 using System.IO;
  34 using System.Xml;
  35 using System.Xml.Schema;
  36 using System.Xml.XPath;
  37 using System.Xml.Xsl;
  38 using Mono.Xml.Xsl;
  39
  40 namespace Mono.Xml.XPath
  41 {
  42         internal class KeyPattern : LocationPathPattern
  43         {
  44                 XmlQualifiedName keyName;
  45                 string arg0, arg1;
  46                 XsltKey key;
  47
  48                 public KeyPattern (XsltKey key)
  49                         : base ((NodeTest) null)
  50                 {
  51                         this.key = key;
  52                         ExprLiteral keyName = key.KeyName as ExprLiteral;
  53                         ExprLiteral field = key.Field as ExprLiteral;
  54                         this.arg0 = keyName.Value;
  55                         this.arg1 = field.Value;
  56                         this.keyName = XslNameUtil.FromString (arg0, key.NamespaceManager);
  57                 }
  58
  59                 public override bool Matches (XPathNavigator node, XsltContext ctx)
  60                 {
  61                         XsltCompiledContext xctx = ctx as XsltCompiledContext;
  62                         XslKey xslkey = xctx.Processor.CompiledStyle.Keys [keyName] as XslKey;
  63                         XPathNodeIterator iter = key.EvaluateNodeSet (new SelfIterator (node, ctx));
  64                         while (iter.MoveNext ())
  65                                 if (iter.Current.IsSamePosition (node))
  66                                         return true;
  67                         return false;
  68                 }
  69
  70                 public override double DefaultPriority { get { return 0.5; } }
  71         }
  72 }