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// Author: Dwivedi, Ajay kumar
// Adwiv@Yahoo.com
using System;
using System.Xml.Serialization;
using System.Xml;
namespace System.Xml.Schema
{
/// <summary>
/// Summary description for XmlSchemaAll.
/// </summary>
public class XmlSchemaChoice : XmlSchemaGroupBase
{
private XmlSchemaObjectCollection items;
private static string xmlname = "choice";
public XmlSchemaChoice()
{
items = new XmlSchemaObjectCollection();
}
[XmlElement("element",typeof(XmlSchemaElement),Namespace="http://www.w3.org/2001/XMLSchema")]
[XmlElement("group",typeof(XmlSchemaGroupRef),Namespace="http://www.w3.org/2001/XMLSchema")]
[XmlElement("choice",typeof(XmlSchemaChoice),Namespace="http://www.w3.org/2001/XMLSchema")]
[XmlElement("sequence",typeof(XmlSchemaSequence),Namespace="http://www.w3.org/2001/XMLSchema")]
[XmlElement("any",typeof(XmlSchemaAny),Namespace="http://www.w3.org/2001/XMLSchema")]
public override XmlSchemaObjectCollection Items
{
get{ return items; }
}
[MonoTODO]
internal int Compile(ValidationEventHandler h, XmlSchemaInfo info)
{
//FIXME: Should we reset the values
if(MinOccurs > MaxOccurs)
error(h,"minOccurs must be less than or equal to maxOccurs");
XmlSchemaUtil.CompileID(Id, this, info.IDCollection, h);
foreach(XmlSchemaObject obj in Items)
{
if(obj is XmlSchemaElement)
{
errorCount += ((XmlSchemaElement)obj).Compile(h,info);
}
else if(obj is XmlSchemaGroupRef)
{
errorCount += ((XmlSchemaGroupRef)obj).Compile(h,info);
}
else if(obj is XmlSchemaChoice)
{
errorCount += ((XmlSchemaChoice)obj).Compile(h,info);
}
else if(obj is XmlSchemaSequence)
{
errorCount += ((XmlSchemaSequence)obj).Compile(h,info);
}
else if(obj is XmlSchemaAny)
{
errorCount += ((XmlSchemaAny)obj).Compile(h,info);
}
}
return errorCount;
}
[MonoTODO]
internal int Validate(ValidationEventHandler h)
{
return errorCount;
}
//<choice
// id = ID
// maxOccurs = (nonNegativeInteger | unbounded) : 1
// minOccurs = nonNegativeInteger : 1
// {any attributes with non-schema namespace . . .}>
// Content: (annotation?, (element | group | choice | sequence | any)*)
//</choice>
internal static XmlSchemaChoice Read(XmlSchemaReader reader, ValidationEventHandler h)
{
XmlSchemaChoice choice = new XmlSchemaChoice();
reader.MoveToElement();
if(reader.NamespaceURI != XmlSchema.Namespace || reader.LocalName != xmlname)
{
error(h,"Should not happen :1: XmlSchemaChoice.Read, name="+reader.Name,null);
reader.SkipToEnd();
return null;
}
choice.LineNumber = reader.LineNumber;
choice.LinePosition = reader.LinePosition;
choice.SourceUri = reader.BaseURI;
while(reader.MoveToNextAttribute())
{
if(reader.Name == "id")
{
choice.Id = reader.Value;
}
else if(reader.Name == "maxOccurs")
{
try
{
choice.MaxOccursString = reader.Value;
}
catch(Exception e)
{
error(h,reader.Value + " is an invalid value for maxOccurs",e);
}
}
else if(reader.Name == "minOccurs")
{
try
{
choice.MinOccursString = reader.Value;
}
catch(Exception e)
{
error(h,reader.Value + " is an invalid value for minOccurs",e);
}
}
else if((reader.NamespaceURI == "" && reader.Name != "xmlns") || reader.NamespaceURI == XmlSchema.Namespace)
{
error(h,reader.Name + " is not a valid attribute for choice",null);
}
else
{
XmlSchemaUtil.ReadUnhandledAttribute(reader,choice);
}
}
reader.MoveToElement();
if(reader.IsEmptyElement)
return choice;
// Content: (annotation?, (element | group | choice | sequence | any)*)
int level = 1;
while(reader.ReadNextElement())
{
if(reader.NodeType == XmlNodeType.EndElement)
{
if(reader.LocalName != xmlname)
error(h,"Should not happen :2: XmlSchemaChoice.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)
choice.Annotation = annotation;
continue;
}
if(level <=2)
{
if(reader.LocalName == "element")
{
level = 2;
XmlSchemaElement element = XmlSchemaElement.Read(reader,h);
if(element != null)
choice.items.Add(element);
continue;
}
if(reader.LocalName == "group")
{
level = 2;
XmlSchemaGroupRef group = XmlSchemaGroupRef.Read(reader,h);
if(group != null)
choice.items.Add(group);
continue;
}
if(reader.LocalName == "choice")
{
level = 2;
XmlSchemaChoice ch = XmlSchemaChoice.Read(reader,h);
if(ch != null)
choice.items.Add(ch);
continue;
}
if(reader.LocalName == "sequence")
{
level = 2;
XmlSchemaSequence sequence = XmlSchemaSequence.Read(reader,h);
if(sequence != null)
choice.items.Add(sequence);
continue;
}
if(reader.LocalName == "any")
{
level = 2;
XmlSchemaAny any = XmlSchemaAny.Read(reader,h);
if(any != null)
choice.items.Add(any);
continue;
}
}
reader.RaiseInvalidElementError();
}
return choice;
}
}
}
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