144 lines
4.1 KiB
C#
144 lines
4.1 KiB
C#
// Author: Dwivedi, Ajay kumar
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// Adwiv@Yahoo.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Xml;
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namespace System.Xml.Schema
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{
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/// <summary>
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/// Summary description for XmlSchemaKey.
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/// </summary>
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public class XmlSchemaKey : XmlSchemaIdentityConstraint
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{
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const string xmlname = "key";
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public XmlSchemaKey()
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{
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}
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/// <remarks>
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/// 1. name must be present
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/// 2. selector and field must be present
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/// </remarks>
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internal override int Compile(ValidationEventHandler h, XmlSchema schema)
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{
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return base.Compile(h, schema);
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}
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/*
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internal new void error(ValidationEventHandler handle, string message)
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{
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errorCount++;
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ValidationHandler.RaiseValidationError(handle, this, message);
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}
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*/
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//<key
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// id = ID
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// name = NCName
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// {any attributes with non-schema namespace . . .}>
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// Content: (annotation?, (selector, field+))
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//</key>
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internal static XmlSchemaKey Read(XmlSchemaReader reader, ValidationEventHandler h)
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{
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XmlSchemaKey key = new XmlSchemaKey();
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reader.MoveToElement();
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if(reader.NamespaceURI != XmlSchema.Namespace || reader.LocalName != xmlname)
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{
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error(h,"Should not happen :1: XmlSchemaKey.Read, name="+reader.Name,null);
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reader.Skip();
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return null;
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}
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key.LineNumber = reader.LineNumber;
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key.LinePosition = reader.LinePosition;
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key.SourceUri = reader.BaseURI;
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while(reader.MoveToNextAttribute())
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{
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if(reader.Name == "id")
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{
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key.Id = reader.Value;
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}
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else if(reader.Name == "name")
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{
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key.Name = reader.Value;
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}
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else if((reader.NamespaceURI == "" && reader.Name != "xmlns") || reader.NamespaceURI == XmlSchema.Namespace)
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{
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error(h,reader.Name + " is not a valid attribute for key",null);
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}
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else
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{
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XmlSchemaUtil.ReadUnhandledAttribute(reader,key);
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}
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}
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reader.MoveToElement();
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if(reader.IsEmptyElement)
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return key;
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// Content: annotation?, selector, field+
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int level = 1;
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while(reader.ReadNextElement())
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{
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if(reader.NodeType == XmlNodeType.EndElement)
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{
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if(reader.LocalName != xmlname)
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error(h,"Should not happen :2: XmlSchemaKey.Read, name="+reader.Name,null);
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break;
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}
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if(level <= 1 && reader.LocalName == "annotation")
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{
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level = 2; //Only one annotation
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XmlSchemaAnnotation annotation = XmlSchemaAnnotation.Read(reader,h);
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if(annotation != null)
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key.Annotation = annotation;
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continue;
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}
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if(level <= 2 && reader.LocalName == "selector")
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{
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level = 3;
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XmlSchemaXPath selector = XmlSchemaXPath.Read(reader,h,"selector");
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if(selector != null)
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key.Selector = selector;
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continue;
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}
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if(level <= 3 && reader.LocalName == "field")
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{
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level = 3;
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if(key.Selector == null)
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error(h,"selector must be defined before field declarations",null);
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XmlSchemaXPath field = XmlSchemaXPath.Read(reader,h,"field");
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if(field != null)
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key.Fields.Add(field);
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continue;
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}
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reader.RaiseInvalidElementError();
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}
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return key;
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}
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}
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}
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