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// Author: Dwivedi, Ajay kumar
// Adwiv@Yahoo.com
using System;
using System.Xml.Serialization;
using System.ComponentModel;
using System.Xml;
namespace System.Xml.Schema
{
/// <summary>
/// Summary description for XmlSchemaXPath.
/// </summary>
public class XmlSchemaXPath : XmlSchemaAnnotated
{
private string xpath;
public XmlSchemaXPath()
{
}
[DefaultValue(null)]
[System.Xml.Serialization.XmlAttribute("xpath")]
public string XPath
{
get{ return xpath; }
set{ xpath = value; }
}
internal int Compile(ValidationEventHandler h, XmlSchemaInfo info)
{
XmlSchemaUtil.CompileID(Id, this, info.IDCollection, h);
return errorCount;
}
//<selector
// id = ID
// xpath = a subset of XPath expression, see below
// {any attributes with non-schema namespace . . .}>
// Content: (annotation?)
//</selector>
internal static XmlSchemaXPath Read(XmlSchemaReader reader, ValidationEventHandler h,string name)
{
XmlSchemaXPath path = new XmlSchemaXPath();
reader.MoveToElement();
if(reader.NamespaceURI != XmlSchema.Namespace || reader.LocalName != name)
{
error(h,"Should not happen :1: XmlSchemaComplexContentRestriction.Read, name="+reader.Name,null);
reader.Skip();
return null;
}
path.LineNumber = reader.LineNumber;
path.LinePosition = reader.LinePosition;
path.SourceUri = reader.BaseURI;
while(reader.MoveToNextAttribute())
{
if(reader.Name == "id")
{
path.Id = reader.Value;
}
else if(reader.Name == "xpath")
{
path.xpath = reader.Value;
}
else if((reader.NamespaceURI == "" && reader.Name != "xmlns") || reader.NamespaceURI == XmlSchema.Namespace)
{
error(h,reader.Name + " is not a valid attribute for "+name,null);
}
else
{
XmlSchemaUtil.ReadUnhandledAttribute(reader,path);
}
}
reader.MoveToElement();
if(reader.IsEmptyElement)
return path;
// Content: (annotation?)
int level = 1;
while(reader.ReadNextElement())
{
if(reader.NodeType == XmlNodeType.EndElement)
{
if(reader.LocalName != name)
error(h,"Should not happen :2: XmlSchemaXPath.Read, name="+reader.Name,null);
break;
}
if(level <= 1 && reader.LocalName == "annotation")
{
level = 2; //Only one annotation
XmlSchemaAnnotation annotation = XmlSchemaAnnotation.Read(reader,h);
if(annotation != null)
path.Annotation = annotation;
continue;
}
reader.RaiseInvalidElementError();
}
return path;
}
}
}
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