86 lines
2.5 KiB
C#
86 lines
2.5 KiB
C#
//
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// System.Web.UI.WebControls.XmlDataSourceView
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//
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// Authors:
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// Ben Maurer (bmaurer@users.sourceforge.net)
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//
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// (C) 2003 Ben Maurer
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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.Collections;
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using System.Collections.Specialized;
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using System.Text;
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using System.Xml;
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namespace System.Web.UI.WebControls
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{
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public sealed class XmlDataSourceView : DataSourceView
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{
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ArrayList nodes;
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XmlDataSource owner;
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public XmlDataSourceView (XmlDataSource owner, string name)
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: base (owner, name)
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{
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this.owner = owner;
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}
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public IEnumerable Select (DataSourceSelectArguments arguments)
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{
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return ExecuteSelect (arguments);
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}
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void DoXPathSelect ()
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{
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XmlNodeList selected_nodes = owner.GetXmlDocument ().SelectNodes (owner.XPath != "" ? owner.XPath : "/*/*");
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nodes = new ArrayList (selected_nodes.Count);
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foreach (XmlNode node in selected_nodes) {
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if (node.NodeType == XmlNodeType.Element)
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nodes.Add (node);
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}
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}
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protected internal override IEnumerable ExecuteSelect (DataSourceSelectArguments arguments)
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{
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if (nodes == null)
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DoXPathSelect();
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ArrayList list = new ArrayList ();
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int max = arguments.StartRowIndex + (arguments.MaximumRows > 0 ? arguments.MaximumRows : nodes.Count);
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if (max > nodes.Count) max = nodes.Count;
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for (int n = arguments.StartRowIndex; n < max; n++)
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list.Add (new XmlDataSourceNodeDescriptor ((XmlElement) nodes [n]));
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if (arguments.RetrieveTotalRowCount)
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arguments.TotalRowCount = nodes.Count;
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return list;
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}
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}
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}
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