//
// System.Xml.Schema.XmlSchemaGroupBase.cs
//
// Author:
// Dwivedi, Ajay kumar Adwiv@Yahoo.com
// Atsushi Enomoto ginga@kit.hi-ho.ne.jp
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.Xml;
using System.Xml.Serialization;
namespace System.Xml.Schema{
/// <summary>
/// Summary description for XmlSchemaGroupRef.
/// </summary>
public class XmlSchemaGroupRef : XmlSchemaParticle
{
private XmlSchema schema;
private XmlQualifiedName refName;
const string xmlname = "group";
private XmlSchemaGroup referencedGroup;
public XmlSchemaGroupRef()
{
refName = XmlQualifiedName.Empty;
}
// Attribute
[System.Xml.Serialization.XmlAttribute("ref")]
public XmlQualifiedName RefName
{
get{ return refName; }
set{ refName = value; }
}
// Post Compilation Schema Information
[XmlIgnore]
public XmlSchemaGroupBase Particle
{
get{
if (TargetGroup != null)
return TargetGroup.Particle;
else
return null;
}
}
internal XmlSchemaGroup TargetGroup
{
get {
if (referencedGroup != null && referencedGroup.IsCircularDefinition)
return null;
else
return referencedGroup;
}
}
/// <remarks>
/// 1. RefName must be present
/// </remarks>
internal override int Compile(ValidationEventHandler h, XmlSchema schema)
{
// If this is already compiled this time, simply skip.
if (CompilationId == schema.CompilationId)
return 0;
this.schema = schema;
XmlSchemaUtil.CompileID(Id,this,schema.IDCollection,h);
CompileOccurence (h, schema);
if(refName == null || refName.IsEmpty)
{
error(h,"ref must be present");
}
else if(!XmlSchemaUtil.CheckQName(RefName))
error(h, "RefName must be a valid XmlQualifiedName");
this.CompilationId = schema.CompilationId;
return errorCount;
}
internal override int Validate(ValidationEventHandler h, XmlSchema schema)
{
if (IsValidated (schema.ValidationId))
return errorCount;
referencedGroup = schema.Groups [RefName] as XmlSchemaGroup;
// it might be missing sub components.
if (referencedGroup == null) {
if (!schema.IsNamespaceAbsent (RefName.Namespace))
error (h, "Referenced group " + RefName + " was not found in the corresponding schema.");
}
// See Errata E1-26: minOccurs=0 is now allowed.
else if (referencedGroup.Particle is XmlSchemaAll && ValidatedMaxOccurs != 1)
error (h, "Group reference to -all- particle must have schema component {maxOccurs}=1.");
if (TargetGroup != null)
TargetGroup.Validate (h, schema);
ValidationId = schema.ValidationId;
return errorCount;
}
bool busy; // only for avoiding infinite loop on illegal recursion cases.
internal override XmlSchemaParticle GetOptimizedParticle (bool isTop)
{
if (busy)
return XmlSchemaParticle.Empty;
if (OptimizedParticle != null)
return OptimizedParticle;
busy = true;
XmlSchemaGroup g = referencedGroup != null ? referencedGroup : schema.Groups [RefName] as XmlSchemaGroup;
if (g != null && g.Particle != null) {
OptimizedParticle = g.Particle;
OptimizedParticle = OptimizedParticle.GetOptimizedParticle (isTop);
if (OptimizedParticle != XmlSchemaParticle.Empty && (ValidatedMinOccurs != 1 || ValidatedMaxOccurs != 1)) {
OptimizedParticle = OptimizedParticle.GetShallowClone ();
OptimizedParticle.OptimizedParticle = null;
OptimizedParticle.MinOccurs = this.MinOccurs;
OptimizedParticle.MaxOccurs = this.MaxOccurs;
OptimizedParticle.CompileOccurence (null, null);
}
}
else
OptimizedParticle = XmlSchemaParticle.Empty;
busy = false;
return OptimizedParticle;
}
internal override bool ParticleEquals (XmlSchemaParticle other)
{
return this.GetOptimizedParticle (true).ParticleEquals (other);
}
internal override bool ValidateDerivationByRestriction (XmlSchemaParticle baseParticle,
ValidationEventHandler h, XmlSchema schema, bool raiseError)
{
if (TargetGroup != null)
return TargetGroup.Particle.ValidateDerivationByRestriction (baseParticle, h, schema, raiseError);
else
return false; // should not occur
}
internal override void CheckRecursion (int depth, ValidationEventHandler h, XmlSchema schema)
{
if (TargetGroup == null)
return;
if (this.recursionDepth == -1) {
recursionDepth = depth;
TargetGroup.Particle.CheckRecursion (depth, h, schema);
recursionDepth = -2;
} else if (depth == recursionDepth)
throw new XmlSchemaException ("Circular group reference was found.", this, null);
}
internal override void ValidateUniqueParticleAttribution (XmlSchemaObjectTable qnames, ArrayList nsNames,
ValidationEventHandler h, XmlSchema schema)
{
if (TargetGroup != null)
TargetGroup.Particle.ValidateUniqueParticleAttribution (qnames, nsNames, h, schema);
}
internal override void ValidateUniqueTypeAttribution (XmlSchemaObjectTable labels,
ValidationEventHandler h, XmlSchema schema)
{
if (TargetGroup != null)
TargetGroup.Particle.ValidateUniqueTypeAttribution (labels, h, schema);
}
#region Read
// <group
// id = ID
// ref = QName
// minOccurs = ? : 1
// maxOccurs = ? : 1>
// Content: (annotation?)
// </group>
internal static XmlSchemaGroupRef Read(XmlSchemaReader reader, ValidationEventHandler h)
{
XmlSchemaGroupRef groupref = new XmlSchemaGroupRef();
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;
}
groupref.LineNumber = reader.LineNumber;
groupref.LinePosition = reader.LinePosition;
groupref.SourceUri = reader.BaseURI;
while(reader.MoveToNextAttribute())
{
if(reader.Name == "id")
{
groupref.Id = reader.Value;
}
else if(reader.Name == "ref")
{
Exception innerex;
groupref.refName = XmlSchemaUtil.ReadQNameAttribute(reader,out innerex);
if(innerex != null)
error(h, reader.Value + " is not a valid value for ref attribute",innerex);
}
else if(reader.Name == "maxOccurs")
{
try
{
groupref.MaxOccursString = reader.Value;
}
catch(Exception e)
{
error(h,reader.Value + " is an invalid value for maxOccurs",e);
}
}
else if(reader.Name == "minOccurs")
{
try
{
groupref.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 group",null);
}
else
{
XmlSchemaUtil.ReadUnhandledAttribute(reader,groupref);
}
}
reader.MoveToElement();
if(reader.IsEmptyElement)
return groupref;
// Content: (annotation?)
int level = 1;
while(reader.ReadNextElement())
{
if(reader.NodeType == XmlNodeType.EndElement)
{
if(reader.LocalName != xmlname)
error(h,"Should not happen :2: XmlSchemaGroupRef.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)
groupref.Annotation = annotation;
continue;
}
reader.RaiseInvalidElementError();
}
return groupref;
}
#endregion
}
}
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