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// Author: Dwivedi, Ajay kumar
// Adwiv@Yahoo.com
using System;
using System.Xml;
using System.Xml.Serialization;
namespace System.Xml.Schema
{
/// <summary>
/// Summary description for XmlSchemaSimpleTypeUnion.
/// </summary>
public class XmlSchemaSimpleTypeUnion : XmlSchemaSimpleTypeContent
{
private XmlSchemaObjectCollection baseTypes;
private XmlQualifiedName[] memberTypes;
private static string xmlname = "union";
public XmlSchemaSimpleTypeUnion()
{
baseTypes = new XmlSchemaObjectCollection();
}
[XmlElement("simpleType",typeof(XmlSchemaSimpleType),Namespace="http://www.w3.org/2001/XMLSchema")]
public XmlSchemaObjectCollection BaseTypes
{
get{ return baseTypes; }
}
[System.Xml.Serialization.XmlAttribute("memberTypes")]
public XmlQualifiedName[] MemberTypes
{
get{ return memberTypes; }
set{ memberTypes = value; }
}
/// <remarks>
/// 1. Circular union type definition is disallowed. (WTH is this?)
/// 2. id must be a valid ID
/// </remarks>
[MonoTODO]
internal int Compile(ValidationEventHandler h, XmlSchemaInfo info)
{
errorCount = 0;
int count = BaseTypes.Count;
foreach(XmlSchemaObject obj in baseTypes)
{
if(obj != null && obj is XmlSchemaSimpleType)
{
XmlSchemaSimpleType stype = (XmlSchemaSimpleType) obj;
errorCount += stype.Compile(h,info);
}
else
{
error(h, "baseTypes can't have objects other than a simpletype");
}
}
if(memberTypes!=null)
{
for(int i=0; i< memberTypes.Length; i++)
{
if(memberTypes[i] == null || !XmlSchemaUtil.CheckQName(MemberTypes[i]))
{
warn(h,"Invalid membertype");
memberTypes[i] = XmlQualifiedName.Empty;
}
else
{
count += MemberTypes.Length;
}
}
}
if(count == 0)
error(h, "Atleast one simpletype or membertype must be present");
XmlSchemaUtil.CompileID(Id,this,info.IDCollection,h);
return errorCount;
}
[MonoTODO]
internal int Validate(ValidationEventHandler h)
{
return errorCount;
}
//<union
// id = ID
// memberTypes = List of QName
// {any attributes with non-schema namespace . . .}>
// Content: (annotation?, (simpleType*))
//</union>
internal static XmlSchemaSimpleTypeUnion Read(XmlSchemaReader reader, ValidationEventHandler h)
{
XmlSchemaSimpleTypeUnion union = new XmlSchemaSimpleTypeUnion();
reader.MoveToElement();
if(reader.NamespaceURI != XmlSchema.Namespace || reader.LocalName != xmlname)
{
error(h,"Should not happen :1: XmlSchemaSimpleTypeUnion.Read, name="+reader.Name,null);
reader.Skip();
return null;
}
union.LineNumber = reader.LineNumber;
union.LinePosition = reader.LinePosition;
union.SourceUri = reader.BaseURI;
//Read Attributes
while(reader.MoveToNextAttribute())
{
if(reader.Name == "id")
{
union.Id = reader.Value;
}
else if(reader.Name == "memberTypes")
{
Exception innerEx;
string[] names = XmlSchemaUtil.SplitList(reader.Value);
union.memberTypes = new XmlQualifiedName[names.Length];
for(int i=0;i<names.Length;i++)
{
union.memberTypes[i] = XmlSchemaUtil.ToQName(reader,names[i],out innerEx);
if(innerEx != null)
error(h,"'"+names[i] + "' is not a valid memberType",innerEx);
}
}
else if((reader.NamespaceURI == "" && reader.Name != "xmlns") || reader.NamespaceURI == XmlSchema.Namespace)
{
error(h,reader.Name + " is not a valid attribute for union",null);
}
else
{
XmlSchemaUtil.ReadUnhandledAttribute(reader,union);
}
}
reader.MoveToElement();
if(reader.IsEmptyElement)
return union;
// Content: annotation?, simpleType*
int level = 1;
while(reader.ReadNextElement())
{
if(reader.NodeType == XmlNodeType.EndElement)
{
if(reader.LocalName != xmlname)
error(h,"Should not happen :2: XmlSchemaSimpleTypeUnion.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)
union.Annotation = annotation;
continue;
}
if(level <=2 && reader.LocalName == "simpleType")
{
level = 2;
XmlSchemaSimpleType stype = XmlSchemaSimpleType.Read(reader,h);
if(stype != null)
union.baseTypes.Add(stype);
continue;
}
reader.RaiseInvalidElementError();
}
return union;
}
}
}
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