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Technosoftware/DaAeHdaClient/Hda/IBrowser.cs

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+#region Copyright (c) 2011-2023 Technosoftware GmbH. All rights reserved
+//-----------------------------------------------------------------------------
+// Copyright (c) 2011-2023 Technosoftware GmbH. All rights reserved
+// Web: https://www.technosoftware.com 
+// 
+// The source code in this file is covered under a dual-license scenario:
+//   - Owner of a purchased license: SCLA 1.0
+//   - GPL V3: everybody else
+//
+// SCLA license terms accompanied with this source code.
+// See SCLA 1.0: https://technosoftware.com/license/Source_Code_License_Agreement.pdf
+//
+// GNU General Public License as published by the Free Software Foundation;
+// version 3 of the License are accompanied with this source code.
+// See https://technosoftware.com/license/GPLv3License.txt
+//
+// This source code is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+// or FITNESS FOR A PARTICULAR PURPOSE.
+//-----------------------------------------------------------------------------
+#endregion Copyright (c) 2011-2023 Technosoftware GmbH. All rights reserved
+
+#region Using Directives
+using System;
+#endregion
+
+namespace Technosoftware.DaAeHdaClient.Hda
+{
+    /// <summary>
+    /// Defines functionality that is common to all OPC Data Access servers.
+    /// </summary>
+    public interface ITsCHdaBrowser : IDisposable
+    {
+        /// <summary>
+        /// Returns the set of attribute filters used by the browser. 
+        /// </summary>
+        TsCHdaBrowseFilterCollection Filters { get; }
+
+        /// <summary>
+        /// Browses the server's address space at the specified branch.
+        /// </summary>
+        /// <param name="itemId">The item id of the branch to search.</param>
+        /// <returns>The set of elements that meet the filter criteria.</returns>
+        TsCHdaBrowseElement[] Browse(OpcItem itemId);
+
+        /// <summary>
+        /// Begins a browsing the server's address space at the specified branch.
+        /// </summary>
+        /// <param name="itemId">The item id of the branch to search.</param>
+        /// <param name="maxElements">The maximum number of elements to return.</param>
+        /// <param name="position">The position object used to continue a browse operation.</param>
+        /// <returns>The set of elements that meet the filter criteria.</returns>
+        TsCHdaBrowseElement[] Browse(OpcItem itemId, int maxElements, out IOpcBrowsePosition position);
+
+        /// <summary>
+        /// Continues browsing the server's address space at the specified position.
+        /// </summary>
+        /// <param name="maxElements">The maximum number of elements to return.</param>
+        /// <param name="position">The position object used to continue a browse operation.</param>
+        /// <returns>The set of elements that meet the filter criteria.</returns>
+        TsCHdaBrowseElement[] BrowseNext(int maxElements, ref IOpcBrowsePosition position);
+    }
+}