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