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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>
/// refers to the named group
/// </summary>
public class XmlSchemaGroup : XmlSchemaAnnotated
{
private string name;
private XmlSchemaGroupBase particle;
private XmlQualifiedName qualifiedName;
private static string xmlname = "group";
public XmlSchemaGroup()
{
}
[System.Xml.Serialization.XmlAttribute("name")]
public string Name
{
get{ return name; }
set{ name = value; }
}
[XmlElement("all",typeof(XmlSchemaAll),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")]
public XmlSchemaGroupBase Particle
{
get{ return particle; }
set{ particle = value; }
}
[XmlIgnore]
internal XmlQualifiedName QualifiedName
{
get{ return qualifiedName;}
}
// 1. name must be present
// 2. MinOccurs & MaxOccurs of the Particle must be absent
[MonoTODO]
internal int Compile(ValidationEventHandler h, XmlSchemaInfo info)
{
if(Name == null)
error(h,"Required attribute name must be present");
else if(!XmlSchemaUtil.CheckNCName(this.name))
error(h,"attribute name must be NCName");
else
qualifiedName = new XmlQualifiedName(Name,info.TargetNamespace);
if(Particle == null)
{
error(h,"Particle is required");
}
else
{
if(Particle.MaxOccursString != null)
Particle.error(h,"MaxOccurs must not be present when the Particle is a child of Group");
if(Particle.MinOccursString != null)
Particle.error(h,"MinOccurs must not be present when the Particle is a child of Group");
if(Particle is XmlSchemaChoice)
{
errorCount += ((XmlSchemaChoice)Particle).Compile(h,info);
}
else if(Particle is XmlSchemaSequence)
{
errorCount += ((XmlSchemaSequence)Particle).Compile(h,info);
}
else if(Particle is XmlSchemaAll)
{
errorCount += ((XmlSchemaAll)Particle).Compile(h,info);
}
else
{
error(h,"only all,choice or sequence are allowed");
}
}
XmlSchemaUtil.CompileID(Id,this,info.IDCollection,h);
return errorCount;
}
[MonoTODO]
internal int Validate(ValidationEventHandler h)
{
return errorCount;
}
//From the Errata
//<group
// id = ID
// name = NCName
// {any attributes with non-schema namespace . . .}>
// Content: (annotation?, (all | choice | sequence)?)
//</group>
internal static XmlSchemaGroup Read(XmlSchemaReader reader, ValidationEventHandler h)
{
XmlSchemaGroup group = new XmlSchemaGroup();
reader.MoveToElement();
if(reader.NamespaceURI != XmlSchema.Namespace || reader.LocalName != xmlname)
{
error(h,"Should not happen :1: XmlSchemaGroup.Read, name="+reader.Name,null);
reader.Skip();
return null;
}
group.LineNumber = reader.LineNumber;
group.LinePosition = reader.LinePosition;
group.SourceUri = reader.BaseURI;
while(reader.MoveToNextAttribute())
{
if(reader.Name == "id")
{
group.Id = reader.Value;
}
else if(reader.Name == "name")
{
group.name = reader.Value;
}
else if((reader.NamespaceURI == "" && reader.Name != "xmlns") || reader.NamespaceURI == XmlSchema.Namespace)
{
error(h,reader.Name + " is not a valid attribute for group",null);
}
else
{
XmlSchemaUtil.ReadUnhandledAttribute(reader,group);
}
}
reader.MoveToElement();
if(reader.IsEmptyElement)
return group;
// Content: (annotation?, (all | choice | sequence)?)
int level = 1;
while(reader.ReadNextElement())
{
if(reader.NodeType == XmlNodeType.EndElement)
{
if(reader.LocalName != xmlname)
error(h,"Should not happen :2: XmlSchemaGroup.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)
group.Annotation = annotation;
continue;
}
if(level <= 2)
{
if(reader.LocalName == "all")
{
level = 3;
XmlSchemaAll all = XmlSchemaAll.Read(reader,h);
if(all != null)
group.Particle = all;
continue;
}
if(reader.LocalName == "choice")
{
level = 3;
XmlSchemaChoice choice = XmlSchemaChoice.Read(reader,h);
if(choice != null)
group.Particle = choice;
continue;
}
if(reader.LocalName == "sequence")
{
level = 3;
XmlSchemaSequence sequence = XmlSchemaSequence.Read(reader,h);
if(sequence != null)
group.Particle = sequence;
continue;
}
}
reader.RaiseInvalidElementError();
}
return group;
}
}
}
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