//
// System.Xml.Schema.XmlSchemaSequence.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.Serialization;
using System.Xml;
namespace System.Xml.Schema{
/// <summary>
/// Summary description for XmlSchemaSequence.
/// </summary>
public class XmlSchemaSequence : XmlSchemaGroupBase
{
private XmlSchemaObjectCollection items;
const string xmlname = "sequence";
public XmlSchemaSequence()
{
items = new XmlSchemaObjectCollection();
}
[XmlElement("element",typeof(XmlSchemaElement))]
[XmlElement("group",typeof(XmlSchemaGroupRef))]
[XmlElement("choice",typeof(XmlSchemaChoice))]
[XmlElement("sequence",typeof(XmlSchemaSequence))]
[XmlElement("any",typeof(XmlSchemaAny))]
public override XmlSchemaObjectCollection Items
{
get{ return items; }
}
internal override void SetParent (XmlSchemaObject parent)
{
base.SetParent (parent);
foreach (XmlSchemaObject obj in Items)
obj.SetParent (this);
}
internal override int Compile(ValidationEventHandler h, XmlSchema schema)
{
// If this is already compiled this time, simply skip.
if (CompilationId == schema.CompilationId)
return 0;
XmlSchemaUtil.CompileID(Id, this, schema.IDCollection, h);
CompileOccurence (h, schema);
foreach(XmlSchemaObject obj in Items)
{
if(obj is XmlSchemaElement ||
obj is XmlSchemaGroupRef ||
obj is XmlSchemaChoice ||
obj is XmlSchemaSequence ||
obj is XmlSchemaAny)
{
errorCount += obj.Compile(h,schema);
}
else
error(h, "Invalid schema object was specified in the particles of the sequence model group.");
}
this.CompilationId = schema.CompilationId;
return errorCount;
}
internal override XmlSchemaParticle GetOptimizedParticle (bool isTop)
{
if (OptimizedParticle != null)
return OptimizedParticle;
if (Items.Count == 0 || ValidatedMaxOccurs == 0) {
OptimizedParticle = XmlSchemaParticle.Empty;
return OptimizedParticle;
}
if (!isTop && ValidatedMinOccurs == 1 && ValidatedMaxOccurs == 1) {
if (Items.Count == 1)
return ((XmlSchemaParticle) Items [0]).GetOptimizedParticle (false);
}
XmlSchemaSequence seq = new XmlSchemaSequence ();
CopyInfo (seq);
for (int i = 0; i < Items.Count; i++) {
XmlSchemaParticle p = Items [i] as XmlSchemaParticle;
p = p.GetOptimizedParticle (false);
if (p == XmlSchemaParticle.Empty)
continue;
else if (p is XmlSchemaSequence && p.ValidatedMinOccurs == 1 && p.ValidatedMaxOccurs == 1) {
XmlSchemaSequence ps = p as XmlSchemaSequence;
for (int pi = 0; pi < ps.Items.Count; pi++) {
seq.Items.Add (ps.Items [pi]);
seq.CompiledItems.Add (ps.Items [pi]);
}
}
else {
seq.Items.Add (p);
seq.CompiledItems.Add (p);
}
}
if (seq.Items.Count == 0)
OptimizedParticle = XmlSchemaParticle.Empty;
else
OptimizedParticle = seq;
return OptimizedParticle;
}
internal override int Validate (ValidationEventHandler h, XmlSchema schema)
{
if (IsValidated (schema.CompilationId))
return errorCount;
CompiledItems.Clear ();
foreach (XmlSchemaParticle p in Items) {
errorCount += p.Validate (h, schema); // This is basically extraneous for pointless item, but needed to check validation error.
// XmlSchemaParticle particleInPoint = p.GetParticleWithoutPointless ();
// if (particleInPoint != XmlSchemaParticle.Empty)
// CompiledItems.Add (particleInPoint);
CompiledItems.Add (p);
}
ValidationId = schema.ValidationId;
return errorCount;
}
internal override bool ValidateDerivationByRestriction (XmlSchemaParticle baseParticle,
ValidationEventHandler h, XmlSchema schema, bool raiseError)
{
if (this == baseParticle) // quick check
return true;
XmlSchemaElement el = baseParticle as XmlSchemaElement;
if (el != null) {
// Forbidden
if (raiseError)
error (h, "Invalid sequence paricle derivation.");
return false;
}
XmlSchemaSequence seq = baseParticle as XmlSchemaSequence;
if (seq != null) {
// Recurse
if (!ValidateOccurenceRangeOK (seq, h, schema, raiseError))
return false;
// If it is totally optional, then ignore their contents.
if (seq.ValidatedMinOccurs == 0 && seq.ValidatedMaxOccurs == 0 &&
this.ValidatedMinOccurs == 0 && this.ValidatedMaxOccurs == 0)
return true;
return ValidateRecurse (seq, h, schema, raiseError);
}
XmlSchemaAll all = baseParticle as XmlSchemaAll;
if (all != null) {
// RecurseUnordered
XmlSchemaObjectCollection already = new XmlSchemaObjectCollection ();
for (int i = 0; i < this.Items.Count; i++) {
XmlSchemaElement de = this.Items [i] as XmlSchemaElement;
if (de == null) {
if (raiseError)
error (h, "Invalid sequence particle derivation by restriction from all.");
return false;
}
foreach (XmlSchemaElement e in all.Items) {
if (e.QualifiedName == de.QualifiedName) {
if (already.Contains (e)) {
if (raiseError)
error (h, "Base element particle is mapped to the derived element particle in a sequence two or more times.");
return false;
} else {
already.Add (e);
if (!de.ValidateDerivationByRestriction (e, h, schema, raiseError))
return false;
}
}
}
}
foreach (XmlSchemaElement e in all.Items)
if (!already.Contains (e))
if (!e.ValidateIsEmptiable ()) {
if (raiseError)
error (h, "In base -all- particle, mapping-skipped base element which is not emptiable was found.");
return false;
}
return true;
}
XmlSchemaAny any = baseParticle as XmlSchemaAny;
if (any != null) {
// NSRecurseCheckCardinality
return ValidateNSRecurseCheckCardinality (any, h, schema, raiseError);
}
XmlSchemaChoice choice = baseParticle as XmlSchemaChoice;
if (choice != null) {
// MapAndSum
// In fact it is not Recurse, but it looks almost common.
return ValidateSeqRecurseMapSumCommon (choice, h, schema, false, true, raiseError);
}
return true;
}
internal override decimal GetMinEffectiveTotalRange ()
{
return GetMinEffectiveTotalRangeAllAndSequence ();
}
internal override void ValidateUniqueParticleAttribution (XmlSchemaObjectTable qnames, ArrayList nsNames,
ValidationEventHandler h, XmlSchema schema)
{
ValidateUPAOnHeadingOptionalComponents (qnames, nsNames, h, schema);
ValidateUPAOnItems (qnames, nsNames, h, schema);
}
void ValidateUPAOnHeadingOptionalComponents (XmlSchemaObjectTable qnames, ArrayList nsNames,
ValidationEventHandler h, XmlSchema schema)
{
// heading optional components
foreach (XmlSchemaParticle p in this.Items) {
p.ValidateUniqueParticleAttribution (qnames, nsNames, h, schema);
if (p.ValidatedMinOccurs != 0)
break;
}
}
void ValidateUPAOnItems (XmlSchemaObjectTable qnames, ArrayList nsNames,
ValidationEventHandler h, XmlSchema schema)
{
// non-optional components
XmlSchemaObjectTable elems = new XmlSchemaObjectTable ();
ArrayList wildcards = new ArrayList ();
XmlSchemaObjectTable tmpElems = new XmlSchemaObjectTable ();
ArrayList tmpWildcards = new ArrayList ();
for (int i=0; i<Items.Count; i++) {
XmlSchemaParticle p1 = Items [i] as XmlSchemaParticle;
p1.ValidateUniqueParticleAttribution (elems, wildcards, h, schema);
if (p1.ValidatedMinOccurs == p1.ValidatedMaxOccurs) {
elems.Clear ();
wildcards.Clear ();
}
else {
if (p1.ValidatedMinOccurs != 0) {
foreach (XmlQualifiedName n in tmpElems.Names)
elems.Set (n, null); // remove
foreach (object o in tmpWildcards)
wildcards.Remove (o);
}
foreach (XmlQualifiedName n in elems.Names)
tmpElems.Set (n, elems [n]);
tmpWildcards.Clear ();
tmpWildcards.AddRange (wildcards);
}
}
}
internal override void ValidateUniqueTypeAttribution (XmlSchemaObjectTable labels,
ValidationEventHandler h, XmlSchema schema)
{
foreach (XmlSchemaParticle p in this.Items)
p.ValidateUniqueTypeAttribution (labels, h, schema);
}
//<sequence
// id = ID
// maxOccurs = (nonNegativeInteger | unbounded) : 1
// minOccurs = nonNegativeInteger : 1
// {any attributes with non-schema namespace . . .}>
// Content: (annotation?, (element | group | choice | sequence | any)*)
//</sequence>
internal static XmlSchemaSequence Read(XmlSchemaReader reader, ValidationEventHandler h)
{
XmlSchemaSequence sequence = new XmlSchemaSequence();
reader.MoveToElement();
if(reader.NamespaceURI != XmlSchema.Namespace || reader.LocalName != xmlname)
{
error(h,"Should not happen :1: XmlSchemaSequence.Read, name="+reader.Name,null);
reader.Skip();
return null;
}
sequence.LineNumber = reader.LineNumber;
sequence.LinePosition = reader.LinePosition;
sequence.SourceUri = reader.BaseURI;
while(reader.MoveToNextAttribute())
{
if(reader.Name == "id")
{
sequence.Id = reader.Value;
}
else if(reader.Name == "maxOccurs")
{
try
{
sequence.MaxOccursString = reader.Value;
}
catch(Exception e)
{
error(h,reader.Value + " is an invalid value for maxOccurs",e);
}
}
else if(reader.Name == "minOccurs")
{
try
{
sequence.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 sequence",null);
}
else
{
XmlSchemaUtil.ReadUnhandledAttribute(reader,sequence);
}
}
reader.MoveToElement();
if(reader.IsEmptyElement)
return sequence;
// 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: XmlSchemaSequence.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)
sequence.Annotation = annotation;
continue;
}
if(level <=2)
{
if(reader.LocalName == "element")
{
level = 2;
XmlSchemaElement element = XmlSchemaElement.Read(reader,h);
if(element != null)
sequence.items.Add(element);
continue;
}
if(reader.LocalName == "group")
{
level = 2;
XmlSchemaGroupRef group = XmlSchemaGroupRef.Read(reader,h);
if(group != null)
sequence.items.Add(group);
continue;
}
if(reader.LocalName == "choice")
{
level = 2;
XmlSchemaChoice choice = XmlSchemaChoice.Read(reader,h);
if(choice != null)
sequence.items.Add(choice);
continue;
}
if(reader.LocalName == "sequence")
{
level = 2;
XmlSchemaSequence seq = XmlSchemaSequence.Read(reader,h);
if(seq != null)
sequence.items.Add(seq);
continue;
}
if(reader.LocalName == "any")
{
level = 2;
XmlSchemaAny any = XmlSchemaAny.Read(reader,h);
if(any != null)
sequence.items.Add(any);
continue;
}
}
reader.RaiseInvalidElementError();
}
return sequence;
}
}
}
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