Peer Graph - Search Criteria Helper

using System;
using System.Xml;
using System.Reflection;
using System.Xml.Schema;

namespace Peer.Graph
{
	public class PeerSearch
	{
		private static XmlSchema schema;
		static PeerSearch()
		{
			schema = XmlSchema.Read(Assembly.GetExecutingAssembly().GetManifestResourceStream("Graph.SearchCriteria.xsd"), null);
			schema.Compile(null);
		}

		private PeerGraph graph;
		private string xml;

		public PeerSearch(PeerGraph Graph)
		{
			graph = Graph;
		}

		public PeerGraph Graph
		{
			get { return graph; }
		}

		public string Xml
		{
			get
			{
				return xml;
			}
			set
			{
				xml = value;
			}
		}

		public virtual PeerRecordCollection Search()
		{
			return Graph.Search(xml);
		}

		public override string ToString()
		{
			return Xml;
		}

		public bool Validate()
		{
			XmlValidatingReader vr = new XmlValidatingReader(Xml, XmlNodeType.Element, null);
			vr.Schemas.Add(schema,null);
			bool valid;
			try
			{
				while (vr.Read()) { }
				valid = true;
			}
			catch (XmlSchemaException ex)
			{
				valid = false;
			}
			catch (XmlException ex)
			{
				valid = false;
			}
			return valid;
		}
	}
}