} // end ctr
//-
#endregion
#region // Public Methods
//------------------------
/// <summary>
/// Adds a namespace element as child to a namespace element
/// </summary>
/// <param name="aChild">Child to be added</param>
/// <returns>
/// true - Child successfully added
/// false - Child was not added
/// </returns>
/// <include
/// file='TBNS.doc.xml'
/// path='//class[@name="AeAddressSpaceElement"]/
/// method[@name="AddChild"]/doc/*'
/// />
public override bool AddChild(AddressSpaceElement aChild)
{
if (!HasChildren)
{
Application.Instance.Trace(
EnumTraceLevel.WRN, EnumTraceGroup.OPCSERVER,
"AeAddressSpaceElement.AddChild", "this element does not allow childred");
return false;
} // end if
AeAddressSpaceElement child = aChild as AeAddressSpaceElement;
if (child == null)
{
Application.Instance.Trace(
EnumTraceLevel.WRN, EnumTraceGroup.OPCSERVER,
"AeAddressSpaceElement.AddChild", "Invalid child provided");
return false;
} // end if
// only add the child if no handle assigned
if (child.ObjectHandle == 0)
{
// Prepare for the add addressSpace element call
OTSAddressSpaceElementData data = new OTSAddressSpaceElementData();
data.m_name = Marshal.StringToCoTaskMemUni(child.Name);
data.m_itemID = Marshal.StringToCoTaskMemUni(
Name + Application.Instance.AddressSpaceDelimiter + child.Name);
data.m_hasChildren = Convert.ToByte(child.HasChildren);
data.m_isBrowsable = Convert.ToByte(child.IsBrowsable);
data.m_elementType = (byte) EnumAddressSpaceElementType.AE;
data.m_userData = child.UserData;
Application.Instance.AeAddressSpaceRoot.AddElementToArray(child);
int result = OTBFunctions.OTSAddAddressSpaceElement(m_objectHandle, data, out child.m_objectHandle);
Marshal.FreeCoTaskMem(data.m_name);
Marshal.FreeCoTaskMem(data.m_itemID);
if (!ResultCode.SUCCEEDED(result))
{
result = Application.Instance.AeAddressSpaceRoot.RemoveElementFromArray(child);
System.Diagnostics.Debug.Assert(ResultCode.SUCCEEDED(result),
"RemoveElementFromArray has failed");
return false;
} // end if
}
else
{
Application.Instance.AeAddressSpaceRoot.AddElementToArray(child);
} // end if ... else
return base.AddChild(aChild);
} // end AddChild
} // end QueryAddressSpaceElementChildren
/// <summary>
/// retireves the conditions strings for a specified <see cref="AeAddressSpaceElement"/>
/// </summary>
/// <include
/// file='TBNS.doc.xml'
/// path='//class[@name="AeAddressSpaceRoot"]/
/// method[@name="QueryConditions"]/doc/*'
/// />
public virtual int QueryConditions(
uint anUserData,
string aSourcePath,
out string[] aConditionNames)
{
AeAddressSpaceElement element = (AeAddressSpaceElement) GetElementFromArray(anUserData);
if (element != null)
{
return element.QueryConditions(aSourcePath, out aConditionNames);
}
else
{
aConditionNames = null;
return (int) EnumResultCode.S_FALSE;
} // end if ... else
} // end QueryConditions
} // end AddChild
/// <summary>
/// Removes Child and its children if there are some
/// </summary>
/// <param name="aChild">AddressSpaceElement to be removed</param>
/// <returns>
/// true - Child removed
/// false - Child was not removed
/// </returns>
/// <include
/// file='TBNS.doc.xml'
/// path='//class[@name="AeAddressSpaceElement"]/
/// method[@name="RemoveChild"]/doc/*'
/// />
public override bool RemoveChild(AddressSpaceElement aChild)
{
AeAddressSpaceElement child = aChild as AeAddressSpaceElement;
if (child == null)
{
Application.Instance.Trace(EnumTraceLevel.WRN, EnumTraceGroup.OPCSERVER,
"AeAddressSpaceElement.RemoveChild", "Invalid child provided");
return false;
} // end if
if (child.HasChildren)
{
// Remove the clildren of the child
ArrayList otherChildren = child.GetChildren();
foreach (AddressSpaceElement element in otherChildren)
{
child.RemoveChild(element);
} // end for
} // end if
int result = OTBFunctions.OTSRemoveAddressSpaceElement(child.ObjectHandle);
if (!ResultCode.SUCCEEDED(result))
{
Application.Instance.Trace(EnumTraceLevel.WRN, EnumTraceGroup.OPCSERVER,
"AeAddressSpaceElement.RemoveChild",
"OTSRemoveAddressSpaceElement has failed with code" + result.ToString());
return false;
} // end if
result = Application.Instance.AeAddressSpaceRoot.RemoveElementFromArray(child);
if (!ResultCode.SUCCEEDED(result))
{
Application.Instance.Trace(EnumTraceLevel.WRN, EnumTraceGroup.OPCSERVER,
"AeAddressSpaceElement.RemoveChild",
"OTSRemoveAddressSpaceElement has failed with code" + result.ToString());
return false;
} // end if
return base.RemoveChild(aChild);
} // end RemoveChild
