/// <summary>
/// Add a dotted named variable to the pool to be retrieved by calling getDotted.
/// If it exists but the new value is null or empty, then the dotted variable
/// is removed.
/// </summary>
/// <param name="name">The id of the variable.</param>
/// <param name="value">The variable called by name.</param>
public void add(string name, string dotted, string value)
{
if (name == null || name == "")
{
return;
}
EmptyElement ee = (EmptyElement)m_vars[name];
if (ee != null)
{ // the variable is defined
if (dotted != null && dotted != "")
{
if (value != null && value != "")
{
ee.addAttribute(dotted, value);
}
else // remove the dotted value
{
ee.removeAttribute(dotted);
}
}
}
else if (dotted != null && dotted != "" && value != null && value != "")
{ // the dotted variable is NOT defined
ee = new EmptyElement(name);
ee.addAttribute(dotted, value);
m_vars.Add(name, ee);
}
}
public static EmptyElement readXml(XmlNode emptyElt)
{
EmptyElement ee = null;
if (emptyElt == null)
{
return(ee);
}
if (emptyElt.HasChildNodes)
{ // this is not empty!
Log log = Log.getOnly();
log.writeElt("fail");
log.writeAttr("node", emptyElt.Name);
log.writeAttr("expected", "empty");
log.endElt();
}
else // this is a truly empty node
{
ee = new EmptyElement(emptyElt.Name);
XmlAttributeCollection attrs = emptyElt.Attributes;
for (int a = 0; a < attrs.Count; a++)
{ // read all attributes
XmlNode attr = attrs.Item(a);
ee.addAttribute(attr.Name, attr.Value);
}
}
return(ee);
}
/// <summary>
/// Add a named variable to the pool to be retrieved by calling get.
/// </summary>
/// <param name="name">The id of the variable.</param>
/// <param name="value">The variable called by name.</param>
public void add(string name, string value)
{
EmptyElement ee = new EmptyElement(name);
ee.addAttribute(name, value);
m_vars.Add(name, ee);
}
/**
* Makes a deep copy of an empty element.
* Contents are not copied.
* @return A copy.
*/
public EmptyElement copy()
{
EmptyElement ee = new EmptyElement(m_name);
foreach (Attribute a in m_attributes)
{
ee.addAttribute(a.name, a.value);
}
return(ee);
}
/// <summary>
/// Substitutes the matching formal attribute values of the element
/// with the values in the substitute attributes.
/// </summary>
/// <param name="substitutes">The list of substitute attribute/value pairs</param>
/// <returns>A deep copy of the empty element with values substituted</returns>
public EmptyElement SubstituteCopy(ArrayList substitutes)
{
EmptyElement xerox = copy();
// null valued subs remove attrs from the list, so itterate in reverse
for (int a = xerox.countAttributes() - 1; a > -1; a--)
{ // if formal values are found, substitute
String value = xerox.getAttributeValue(a);
foreach (Substitute sub in substitutes)
{
if (sub.formal.Equals(value))
{
xerox.addAttribute(xerox.getAttributeName(a), sub.value);
}
}
}
return(xerox);
}
/// <summary>
/// Add a dotted named variable to the pool to be retrieved by calling getDotted.
/// If it exists but the new value is null or empty, then the dotted variable
/// is removed.
/// </summary>
/// <param name="name">The id of the variable.</param>
/// <param name="value">The variable called by name.</param>
public void add(string name, string dotted, string value)
{
if (name == null || name == "") return;
EmptyElement ee = (EmptyElement)m_vars[name];
if (ee != null)
{ // the variable is defined
if (dotted != null && dotted != "")
{
if (value != null && value != "")
ee.addAttribute(dotted, value);
else // remove the dotted value
ee.removeAttribute(dotted);
}
}
else if (dotted != null && dotted != "" && value != null && value != "")
{ // the dotted variable is NOT defined
ee = new EmptyElement(name);
ee.addAttribute(dotted, value);
m_vars.Add(name, ee);
}
}
public static EmptyElement readXml(XmlNode emptyElt)
{
EmptyElement ee = null;
if (emptyElt == null) return ee;
if (emptyElt.HasChildNodes)
{ // this is not empty!
Log log = Log.getOnly();
log.writeElt("fail");
log.writeAttr("node", emptyElt.Name);
log.writeAttr("expected", "empty");
log.endElt();
}
else // this is a truly empty node
{
ee = new EmptyElement(emptyElt.Name);
XmlAttributeCollection attrs = emptyElt.Attributes;
for (int a = 0; a < attrs.Count; a++)
{ // read all attributes
XmlNode attr = attrs.Item(a);
ee.addAttribute(attr.Name, attr.Value);
}
}
return ee;
}
/** Creates a parameter known by the application.
* @param name designation of the parameter.
*/
public void addParameter(string name)
{
m_params.addAttribute(name, NoValue);
}
/// <summary>
/// Add a named variable to the pool to be retrieved by calling get.
/// </summary>
/// <param name="name">The id of the variable.</param>
/// <param name="value">The variable called by name.</param>
public void add(string name, string value)
{
EmptyElement ee = new EmptyElement(name);
ee.addAttribute(name, value);
m_vars.Add(name, ee);
}
/**
* Makes a deep copy of an empty element.
* Contents are not copied.
* @return A copy.
*/
public EmptyElement copy()
{
EmptyElement ee = new EmptyElement(m_name);
foreach (Attribute a in m_attributes)
{
ee.addAttribute(a.name, a.value);
}
return ee;
}
