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// Author: Dwivedi, Ajay kumar
// Adwiv@Yahoo.com
//
// 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;
using Mono.Xml.Schema;
namespace System.Xml.Schema
{
/// <summary>
/// Summary description for XmlSchemaIdentityConstraint.
/// </summary>
public class XmlSchemaIdentityConstraint : XmlSchemaAnnotated
{
private XmlSchemaObjectCollection fields;
private string name;
private XmlQualifiedName qName;
private XmlSchemaXPath selector;
private XsdIdentitySelector compiledSelector;
// ArrayList compiledFields;
public XmlSchemaIdentityConstraint()
{
fields = new XmlSchemaObjectCollection();
qName = XmlQualifiedName.Empty;
}
[System.Xml.Serialization.XmlAttribute("name")]
public string Name
{
get{ return name; }
set{ name = value; }
}
[XmlElement("selector",typeof(XmlSchemaXPath))]
public XmlSchemaXPath Selector
{
get{ return selector; }
set{ selector = value; }
}
[XmlElement("field",typeof(XmlSchemaXPath))]
public XmlSchemaObjectCollection Fields
{
get{ return fields; }
}
[XmlIgnore]
public XmlQualifiedName QualifiedName
{
get{ return qName; }
}
internal XsdIdentitySelector CompiledSelector {
get { return compiledSelector; }
}
internal override void SetParent (XmlSchemaObject parent)
{
base.SetParent (parent);
if (Selector != null)
Selector.SetParent (this);
foreach (XmlSchemaObject obj in Fields)
obj.SetParent (this);
}
/// <remarks>
/// 1. name must be present
/// 2. selector and field 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;
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 {
this.qName = new XmlQualifiedName(Name, AncestorSchema.TargetNamespace);
if (schema.NamedIdentities.Contains (qName)) {
XmlSchemaIdentityConstraint existing =
schema.NamedIdentities [qName] as XmlSchemaIdentityConstraint;
error(h, String.Format ("There is already same named identity constraint in this namespace. Existing item is at {0}({1},{2})", existing.SourceUri, existing.LineNumber, existing.LinePosition));
}
else
schema.NamedIdentities.Add (qName, this);
}
if(Selector == null)
error(h,"selector must be present");
else
{
Selector.isSelector = true;
errorCount += Selector.Compile(h,schema);
if (selector.errorCount == 0)
compiledSelector = new XsdIdentitySelector (Selector);
}
if (errorCount > 0)
return errorCount; // fatal
if(Fields.Count == 0)
error(h,"atleast one field value must be present");
else
{
for (int i = 0; i < Fields.Count; i++)
{
XmlSchemaXPath field = Fields [i] as XmlSchemaXPath;
if(field != null)
{
errorCount += field.Compile(h,schema);
if (field.errorCount == 0)
this.compiledSelector.AddField (new XsdIdentityField (field, i));
}
else
error (h, "Object of type " + Fields [i].GetType() + " is invalid in the Fields Collection");
}
}
XmlSchemaUtil.CompileID(Id,this,schema.IDCollection,h);
this.CompilationId = schema.CompilationId;
return errorCount;
}
}
}
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