// ----------------------------------------------------------------------------------------
/// <!-- _CreateNodes -->
/// <summary>
/// Inserts a fragment to fullfill nodes specified by an xpath
/// </summary>
/// <remarks>
/// To insert a node based on an xpath I could...
/// a. use the XML generator to build 'complete templates' (somewhat attractive option (see 'e' below))
/// b. create this as an implementation of the XML generator (much much too closely coupled)
/// c. * iterate through the insert node locations until the xml validates (terribly ineficient but fairly simple)
/// d. dig into the schema and do analysis (very very complicated)
/// e. use the xpath as an input to the generator to make sure the required node is there (attractive option)
/// f. just do it wrong (won't validate)
/// g. make sure that xmls always have the needed nodes (don't control the xmls)
/// h. suck out all the data and build a new xml with it (huge pretty big project, unreliable, very slow) - use approach h as the general approach to what I am doing
/// i. keep track of positions in some array somewhere (too compolicated - like 'd')
/// j. convert to a more explicit xpath (is there a more explicit xpath?)
/// k. use LINQ (need to upgrade to vs 2008 - and learn LINQ)
/// * I picked c
///
/// Warning:
/// Validity may require data
/// </remarks>
/// <param name="xdoc"></param>
/// <returns></returns>
public XmlNode _CreateNodes(PathSlicer xpath, string value)
{
string original = _doc.OuterXml;
Validator val = new Validator();
XmlNode fragment;
XmlNode sibling;
XmlNode parent;
int level;
// ----------------------------------------------------------------------
// This won't work properly without a schema
// ----------------------------------------------------------------------
if (_doc.Schemas == null || _doc.Schemas.Count == 0)
{
throw new XmlSchemaException("CreateNodes error -"
+ " document needs an included schema set"
+ " for PathBuilder.CreateNodes to work properly");
}
// ----------------------------------------------------------------------
// It should blow up if it's not valid to start with
// ----------------------------------------------------------------------
if (!val.IsValid(_doc))
{
throw new XmlException("CreateNodes error -"
+ " xml document is not valid to start with"
+ " according to schema " + _SchemaSetName(_doc));
}
// ----------------------------------------------------------------------
// It should blow up if the xpath root does nto match the xml root
// ----------------------------------------------------------------------
level = this._BreakLevel(xpath, "ns0");
if (level == 0)
{
throw new Exception("CreateNodes error -"
+ " may not use an xpath to change an xml document"
+ " if the root nodes are not the same");
}
// ----------------------------------------------------------------------
// Insert a fragment to complete the xpath
// 1. Get level in xpaths telescope at which node does not exist
// 2. Create a fragment to match the missing xpath
// 3. Identify where to insert it (parent)
// 4. Insert it as the first child
// ----------------------------------------------------------------------
fragment = _CreateNodes(xpath, level, value);
if (level > 0)
{
parent = _GetNode("ns0", xpath.SubPaths[level - 1]);
parent.InsertBefore(fragment, parent.FirstChild);
// ------------------------------------------------------------------
// Move the new fragment along until the document validates
// ------------------------------------------------------------------
sibling = fragment.NextSibling;
while (sibling != null && !val.IsValid(_doc))
{
sibling = fragment.NextSibling;
parent.RemoveChild(fragment);
parent.InsertAfter(fragment, sibling);
}
}
else
{
parent = null;
}
// ----------------------------------------------------------------------
// Restore original document if it didn't work
// ----------------------------------------------------------------------
if (!val.IsValid(_doc))
{
_doc.LoadXml(original);
}
return(_GetNode("ns0", xpath.Path));
}
// ----------------------------------------------------------------------------------------
/// <!-- _RecordImport -->
/// <summary>
/// Adds an import file to the _imports dictionary
/// </summary>
/// <param name="nameSpace"></param>
/// <param name="fileName"></param>
public void _RecordImport(string nameSpace, string fileName)
{
_imports[nameSpace] = new PathSlicer(fileName, ".");
}
// ----------------------------------------------------------------------------------------
// Custom Methods
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
/// <!-- _Bool -->
/// <summary>
///
/// </summary>
/// <param name="xdoc"></param>
/// <param name="namespacePrefix"></param>
/// <param name="defaultValue"></param>
/// <returns></returns>
public bool _Bool(PathSlicer xpath, string namespacePrefix, bool defaultValue)
{
return(TreatAs.BoolValue(_Str(xpath, namespacePrefix, ""), defaultValue));
}
// ----------------------------------------------------------------------------------------
/// <!-- _Load_simple -->
/// <summary>
/// A load that tries a few places to load an xml schema from
/// </summary>
/// <param name="newXml"></param>
/// <param name="schemaLocation"></param>
/// <returns></returns>
public string _Load_simple(string schemaLocation, string hint1, string hint2, string hint3)
{
if (Regex.IsMatch(schemaLocation, ":"))
{
throw new FormatException("There should not be a : in the path " + schemaLocation);
}
string whereFound = "";
PathSet paths = new PathSet();
string tryHere = PathSlicer.FindPath(schemaLocation, hint1, hint2);
try { whereFound = _Load(_baseLocation, schemaLocation); SetBaseLocation = whereFound; } catch {
try { whereFound = _Load(tryHere); SetBaseLocation = whereFound; } catch {
try { whereFound = _Load("", schemaLocation); SetBaseLocation = whereFound; } catch {
}
}
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, "");
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint1);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint1 + "\\" + hint2);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint2);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint2 + "\\" + hint1);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint1 + "\\" + hint2 + "\\" + hint3);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint2 + "\\" + hint3);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint3);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint1 + "\\" + hint3);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint3 + "\\" + hint1);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint3 + "\\" + hint2);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint1 + "\\" + hint3 + "\\" + hint2);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint2 + "\\" + hint1 + "\\" + hint3);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint2 + "\\" + hint3 + "\\" + hint1);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint3 + "\\" + hint1 + "\\" + hint2);
}
if (string.IsNullOrEmpty(whereFound))
{
whereFound = TryLoad(schemaLocation, hint3 + "\\" + hint2 + "\\" + hint1);
}
return(whereFound);
}
