/// <exception cref="InvalidOperationException">Handler is already enabled.</exception>
public static IDisposable Enable(UpgradeHint hint)
{
if (isEnabled)
{
throw new InvalidOperationException();
}
isEnabled = true;
columnHint = hint;
return(new Disposable(_ => {
isEnabled = false;
columnHint = null;
}));
}
private void LoadLibraryMigrations(string library)
{
string fullLibraryName = library;
if (!pathManager.ResolveLibraryPath(ref fullLibraryName))
{
return;
}
string migrationsXMLFile = Path.Combine(Path.GetDirectoryName(fullLibraryName),
Path.GetFileNameWithoutExtension(fullLibraryName) + ".Migrations.xml");
if (!File.Exists(migrationsXMLFile))
{
return;
}
var foundPriorNameHints = new Dictionary <string, UpgradeHint>();
try
{
using (var reader = XmlReader.Create(migrationsXMLFile))
{
var doc = new XmlDocument();
doc.Load(reader);
XmlElement migrationsElement = doc.DocumentElement;
var names = new List <string>();
foreach (XmlNode subNode in migrationsElement.ChildNodes)
{
if (subNode.Name != "priorNameHint")
{
throw new Exception("Invalid XML");
}
names.Add(subNode.Name);
var upgradeHint = new UpgradeHint();
string oldName = null;
foreach (XmlNode hintSubNode in subNode.ChildNodes)
{
names.Add(hintSubNode.Name);
switch (hintSubNode.Name)
{
case "oldName":
oldName = hintSubNode.InnerText;
break;
case "newName":
upgradeHint.UpgradeName = hintSubNode.InnerText;
break;
case "additionalAttributes":
foreach (XmlNode attributesSubNode in hintSubNode.ChildNodes)
{
string attributeName = null;
string attributeValue = null;
switch (attributesSubNode.Name)
{
case "attribute":
foreach (XmlNode attributeSubNode in attributesSubNode.ChildNodes)
{
switch (attributeSubNode.Name)
{
case "name":
attributeName = attributeSubNode.InnerText;
break;
case "value":
attributeValue = attributeSubNode.InnerText;
break;
}
}
break;
}
upgradeHint.AdditionalAttributes[attributeName] = attributeValue;
}
break;
case "additionalElements":
foreach (XmlNode elementsSubnode in hintSubNode.ChildNodes)
{
XmlElement elem = elementsSubnode as XmlElement;
if (elem != null)
{
upgradeHint.AdditionalElements.Add(elem);
}
}
break;
}
}
foundPriorNameHints[oldName] = upgradeHint;
}
}
}
catch (Exception exception)
{
return; // if the XML file is badly formatted, return like it doesn't exist
}
// if everything parsed correctly, then add these names to the priorNameHints
foreach (string key in foundPriorNameHints.Keys)
{
priorNameHints[key] = foundPriorNameHints[key];
}
}
private static InvalidOperationException HintConflict(UpgradeHint hintOne, UpgradeHint hintTwo)
{
return(new InvalidOperationException(string.Format(Strings.ExHintXIsConflictingWithHintY, hintOne, hintTwo)));
}
///GENMHASH:D5C9144F34CDE74E76FA4B029FD4C6BF:C0C35E00AF4E17F141675A2C05C7067B
internal UpgradeHintImpl(UpgradeHint innerObject)
: base(innerObject)
{
}
