122 lines
3.4 KiB
C#
122 lines
3.4 KiB
C#
/*
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* DataSet.cs
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*
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* Copyright 2014 Michael Zillgith
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*
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* This file is part of libIEC61850.
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*
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* libIEC61850 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* libIEC61850 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with libIEC61850. If not, see <http://www.gnu.org/licenses/>.
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*
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* See COPYING file for the complete license text.
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*/
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using System;
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using System.Runtime.InteropServices;
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using IEC61850.Common;
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namespace IEC61850
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{
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namespace Client
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{
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/// <summary>
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/// This class is used to represent a data set. It is used to store the values
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/// of a data set.
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/// </summary>
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public class DataSet
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{
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[DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
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static extern void ClientDataSet_destroy (IntPtr self);
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[DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr ClientDataSet_getValues (IntPtr self);
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[DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
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static extern IntPtr ClientDataSet_getReference (IntPtr self);
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[DllImport("iec61850", CallingConvention = CallingConvention.Cdecl)]
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static extern int ClientDataSet_getDataSetSize (IntPtr self);
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private IntPtr nativeObject;
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private MmsValue values = null;
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private string reference = null;
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internal DataSet (IntPtr nativeObject)
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{
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this.nativeObject = nativeObject;
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}
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/// <summary>
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/// Gets the object reference of the data set
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/// </summary>
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/// <returns>
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/// object reference.
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/// </returns>
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public string GetReference ()
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{
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if (reference == null) {
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IntPtr nativeString = ClientDataSet_getReference (nativeObject);
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reference = Marshal.PtrToStringAnsi (nativeString);
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}
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return reference;
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}
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/// <summary>
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/// Gets the values associated with the data set object
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/// </summary>
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/// <description>This function will return the locally stored values associated with the data set.
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/// These are the values received by the last request to the server. A call to this method doesn't
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/// invoke a request to the server! </description>
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/// <returns>
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/// The locally stored values of the data set (as MmsValue instance of type MMS_ARRAY)
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/// </returns>
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public MmsValue GetValues ()
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{
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if (values == null) {
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IntPtr nativeValues = ClientDataSet_getValues (nativeObject);
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values = new MmsValue (nativeValues, false);
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}
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return values;
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}
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/// <summary>
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/// Gets the number of elements of the data set
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/// </summary>
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/// <returns>
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/// the number of elementes (data set members)
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/// </returns>
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public int GetSize ()
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{
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return ClientDataSet_getDataSetSize (nativeObject);
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}
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~DataSet ()
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{
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ClientDataSet_destroy (nativeObject);
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}
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internal IntPtr getNativeInstance ()
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{
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return nativeObject;
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}
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}
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}
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}
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